./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/mult-comm.wvr.c --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/weaver/mult-comm.wvr.c -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 de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:36:23,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:36:23,491 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:36:23,494 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:36:23,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:36:23,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:36:23,508 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:36:23,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:36:23,509 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:36:23,509 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:36:23,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:36:23,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:36:23,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:36:23,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:36:23,509 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:36:23,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:36:23,509 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:36:23,509 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:36:23,509 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:36:23,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:36:23,509 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:36:23,509 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:36:23,509 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:36:23,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:36:23,510 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:36:23,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:36:23,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:36:23,510 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 -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 [2025-02-08 08:36:23,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:36:23,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:36:23,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:36:23,693 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:36:23,694 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:36:23,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-comm.wvr.c [2025-02-08 08:36:24,811 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/64ddb6636/76a50dec98da4d46978c2a15677d43ec/FLAG3a535faa9 [2025-02-08 08:36:25,090 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:36:25,091 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c [2025-02-08 08:36:25,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/64ddb6636/76a50dec98da4d46978c2a15677d43ec/FLAG3a535faa9 [2025-02-08 08:36:25,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/64ddb6636/76a50dec98da4d46978c2a15677d43ec [2025-02-08 08:36:25,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:36:25,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:36:25,144 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:36:25,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:36:25,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:36:25,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6bc707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25, skipping insertion in model container [2025-02-08 08:36:25,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,164 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:36:25,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:36:25,294 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:36:25,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:36:25,315 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:36:25,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25 WrapperNode [2025-02-08 08:36:25,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:36:25,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:36:25,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:36:25,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:36:25,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,334 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2025-02-08 08:36:25,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:36:25,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:36:25,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:36:25,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:36:25,339 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,346 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 08:36:25,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,349 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,351 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:36:25,352 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:36:25,352 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:36:25,352 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:36:25,352 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (1/1) ... [2025-02-08 08:36:25,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:36:25,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:25,375 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 08:36:25,377 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 08:36:25,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:36:25,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:36:25,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:36:25,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:36:25,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:36:25,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:36:25,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:36:25,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:36:25,395 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 08:36:25,449 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:36:25,450 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:36:25,582 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:36:25,582 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:36:25,647 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:36:25,647 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:36:25,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:36:25 BoogieIcfgContainer [2025-02-08 08:36:25,648 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:36:25,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:36:25,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:36:25,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:36:25,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:36:25" (1/3) ... [2025-02-08 08:36:25,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6938aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:36:25, skipping insertion in model container [2025-02-08 08:36:25,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:36:25" (2/3) ... [2025-02-08 08:36:25,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6938aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:36:25, skipping insertion in model container [2025-02-08 08:36:25,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:36:25" (3/3) ... [2025-02-08 08:36:25,654 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2025-02-08 08:36:25,664 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:36:25,665 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-comm.wvr.c that has 3 procedures, 19 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-08 08:36:25,666 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:36:25,708 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 08:36:25,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2025-02-08 08:36:25,763 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2025-02-08 08:36:25,765 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 08:36:25,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-02-08 08:36:25,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2025-02-08 08:36:25,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2025-02-08 08:36:25,780 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:36:25,789 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;@29696748, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:36:25,790 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 08:36:25,802 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:36:25,802 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-02-08 08:36:25,802 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 08:36:25,803 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:25,803 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:25,803 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:25,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:25,809 INFO L85 PathProgramCache]: Analyzing trace with hash -155929334, now seen corresponding path program 1 times [2025-02-08 08:36:25,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:25,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85905721] [2025-02-08 08:36:25,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:36:25,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:25,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:36:25,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:36:25,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:36:25,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:26,196 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 08:36:26,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:26,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85905721] [2025-02-08 08:36:26,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85905721] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:36:26,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:36:26,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:36:26,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035078827] [2025-02-08 08:36:26,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:36:26,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:36:26,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:26,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:36:26,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:36:26,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:26,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:36:26,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:26,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:26,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:26,329 INFO L124 PetriNetUnfolderBase]: 68/123 cut-off events. [2025-02-08 08:36:26,331 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-02-08 08:36:26,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 123 events. 68/123 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 317 event pairs, 22 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 220. Up to 72 conditions per place. [2025-02-08 08:36:26,336 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 21 selfloop transitions, 3 changer transitions 1/26 dead transitions. [2025-02-08 08:36:26,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 26 transitions, 123 flow [2025-02-08 08:36:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:36:26,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:36:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2025-02-08 08:36:26,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-02-08 08:36:26,347 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 39 transitions. [2025-02-08 08:36:26,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 26 transitions, 123 flow [2025-02-08 08:36:26,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 26 transitions, 109 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 08:36:26,352 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2025-02-08 08:36:26,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2025-02-08 08:36:26,357 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2025-02-08 08:36:26,357 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2025-02-08 08:36:26,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:36:26,357 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:26,357 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:26,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:36:26,357 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:26,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:26,358 INFO L85 PathProgramCache]: Analyzing trace with hash -714554257, now seen corresponding path program 1 times [2025-02-08 08:36:26,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:26,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395576989] [2025-02-08 08:36:26,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:36:26,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:26,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 08:36:26,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:36:26,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:36:26,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:26,599 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 08:36:26,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395576989] [2025-02-08 08:36:26,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395576989] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:26,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401358268] [2025-02-08 08:36:26,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:36:26,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:26,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:26,604 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 08:36:26,605 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 08:36:26,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 08:36:26,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:36:26,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:36:26,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:26,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:36:26,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:26,752 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 08:36:26,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:26,951 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 08:36:26,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401358268] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:26,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:26,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2025-02-08 08:36:26,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900705169] [2025-02-08 08:36:26,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:26,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 08:36:26,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:26,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 08:36:26,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-02-08 08:36:26,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:26,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 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 08:36:26,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:26,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:26,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:27,090 INFO L124 PetriNetUnfolderBase]: 70/131 cut-off events. [2025-02-08 08:36:27,090 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-08 08:36:27,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 131 events. 70/131 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 352 event pairs, 12 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 104. Up to 70 conditions per place. [2025-02-08 08:36:27,091 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 23 selfloop transitions, 5 changer transitions 12/41 dead transitions. [2025-02-08 08:36:27,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 41 transitions, 196 flow [2025-02-08 08:36:27,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:36:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 08:36:27,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2025-02-08 08:36:27,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-02-08 08:36:27,095 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 6 states and 65 transitions. [2025-02-08 08:36:27,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 41 transitions, 196 flow [2025-02-08 08:36:27,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 41 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:36:27,097 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow [2025-02-08 08:36:27,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2025-02-08 08:36:27,098 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2025-02-08 08:36:27,099 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow [2025-02-08 08:36:27,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 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 08:36:27,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:27,099 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:27,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 08:36:27,300 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 08:36:27,300 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:27,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:27,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1582659765, now seen corresponding path program 2 times [2025-02-08 08:36:27,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:27,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020619634] [2025-02-08 08:36:27,305 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:36:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:27,315 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-08 08:36:27,339 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:36:27,339 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:36:27,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:27,634 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 08:36:27,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020619634] [2025-02-08 08:36:27,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020619634] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861226016] [2025-02-08 08:36:27,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:36:27,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:27,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:27,637 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 08:36:27,638 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 08:36:27,669 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-08 08:36:27,683 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:36:27,683 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:36:27,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:27,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 08:36:27,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:27,810 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 08:36:27,810 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:27,922 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 08:36:27,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861226016] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:27,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:27,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 13 [2025-02-08 08:36:27,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578225974] [2025-02-08 08:36:27,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:27,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 08:36:27,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:27,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 08:36:27,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2025-02-08 08:36:27,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:27,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 78 flow. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 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 08:36:27,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:27,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:27,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:28,128 INFO L124 PetriNetUnfolderBase]: 113/210 cut-off events. [2025-02-08 08:36:28,128 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2025-02-08 08:36:28,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 210 events. 113/210 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 681 event pairs, 11 based on Foata normal form. 3/213 useless extension candidates. Maximal degree in co-relation 555. Up to 87 conditions per place. [2025-02-08 08:36:28,129 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 38 selfloop transitions, 20 changer transitions 9/68 dead transitions. [2025-02-08 08:36:28,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 68 transitions, 363 flow [2025-02-08 08:36:28,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:36:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 08:36:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2025-02-08 08:36:28,135 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5136363636363637 [2025-02-08 08:36:28,135 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 11 states and 113 transitions. [2025-02-08 08:36:28,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 68 transitions, 363 flow [2025-02-08 08:36:28,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 68 transitions, 341 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-02-08 08:36:28,137 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 201 flow [2025-02-08 08:36:28,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=201, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2025-02-08 08:36:28,138 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 16 predicate places. [2025-02-08 08:36:28,138 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 201 flow [2025-02-08 08:36:28,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 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 08:36:28,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:28,141 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:28,148 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 08:36:28,342 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 08:36:28,343 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:28,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash 336649857, now seen corresponding path program 1 times [2025-02-08 08:36:28,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:28,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420302340] [2025-02-08 08:36:28,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:36:28,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:28,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 08:36:28,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:36:28,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:36:28,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:28,555 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 08:36:28,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:28,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420302340] [2025-02-08 08:36:28,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420302340] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:28,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731453664] [2025-02-08 08:36:28,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:36:28,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:28,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:28,557 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 08:36:28,564 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 08:36:28,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 08:36:28,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:36:28,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:36:28,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:28,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:36:28,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:28,705 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 08:36:28,706 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:28,830 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 08:36:28,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731453664] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:28,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:28,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2025-02-08 08:36:28,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592899456] [2025-02-08 08:36:28,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:28,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 08:36:28,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:28,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 08:36:28,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-02-08 08:36:28,831 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:28,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 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 08:36:28,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:28,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:28,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:28,933 INFO L124 PetriNetUnfolderBase]: 117/221 cut-off events. [2025-02-08 08:36:28,933 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2025-02-08 08:36:28,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 221 events. 117/221 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 743 event pairs, 19 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 740. Up to 171 conditions per place. [2025-02-08 08:36:28,936 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 33 selfloop transitions, 6 changer transitions 12/52 dead transitions. [2025-02-08 08:36:28,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 367 flow [2025-02-08 08:36:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:36:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 08:36:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2025-02-08 08:36:28,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2025-02-08 08:36:28,937 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 201 flow. Second operand 6 states and 63 transitions. [2025-02-08 08:36:28,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 367 flow [2025-02-08 08:36:28,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 315 flow, removed 20 selfloop flow, removed 3 redundant places. [2025-02-08 08:36:28,939 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 162 flow [2025-02-08 08:36:28,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2025-02-08 08:36:28,942 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 19 predicate places. [2025-02-08 08:36:28,942 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 162 flow [2025-02-08 08:36:28,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 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 08:36:28,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:28,943 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:28,949 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 08:36:29,147 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 08:36:29,147 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:29,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:29,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1110104581, now seen corresponding path program 3 times [2025-02-08 08:36:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:29,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55493896] [2025-02-08 08:36:29,148 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:36:29,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:29,153 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-02-08 08:36:29,161 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:36:29,162 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:36:29,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:29,340 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 08:36:29,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:29,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55493896] [2025-02-08 08:36:29,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55493896] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:29,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192820546] [2025-02-08 08:36:29,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:36:29,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:29,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:29,348 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 08:36:29,355 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 08:36:29,383 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-02-08 08:36:29,396 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:36:29,397 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:36:29,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:29,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 08:36:29,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:29,522 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 08:36:29,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:29,739 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 08:36:29,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192820546] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:29,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:29,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 12 [2025-02-08 08:36:29,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47322184] [2025-02-08 08:36:29,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:29,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 08:36:29,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:29,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 08:36:29,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2025-02-08 08:36:29,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:29,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 162 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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 08:36:29,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:29,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:29,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:29,901 INFO L124 PetriNetUnfolderBase]: 120/220 cut-off events. [2025-02-08 08:36:29,901 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2025-02-08 08:36:29,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 220 events. 120/220 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 716 event pairs, 18 based on Foata normal form. 2/218 useless extension candidates. Maximal degree in co-relation 688. Up to 161 conditions per place. [2025-02-08 08:36:29,903 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 38 selfloop transitions, 17 changer transitions 6/62 dead transitions. [2025-02-08 08:36:29,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 395 flow [2025-02-08 08:36:29,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:36:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 08:36:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2025-02-08 08:36:29,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2025-02-08 08:36:29,904 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 162 flow. Second operand 9 states and 87 transitions. [2025-02-08 08:36:29,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 395 flow [2025-02-08 08:36:29,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 62 transitions, 375 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-08 08:36:29,908 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 261 flow [2025-02-08 08:36:29,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=261, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2025-02-08 08:36:29,908 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 25 predicate places. [2025-02-08 08:36:29,909 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 261 flow [2025-02-08 08:36:29,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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 08:36:29,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:29,910 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:29,920 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 08:36:30,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:30,111 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:30,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:30,111 INFO L85 PathProgramCache]: Analyzing trace with hash -887772265, now seen corresponding path program 2 times [2025-02-08 08:36:30,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:30,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058106566] [2025-02-08 08:36:30,111 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:36:30,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:30,119 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-08 08:36:30,130 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:36:30,131 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:36:30,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:30,292 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 08:36:30,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:30,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058106566] [2025-02-08 08:36:30,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058106566] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:30,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080228346] [2025-02-08 08:36:30,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:36:30,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:30,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:30,295 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 08:36:30,297 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 08:36:30,321 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-08 08:36:30,332 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:36:30,332 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:36:30,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:30,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:36:30,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:30,387 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 08:36:30,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:30,503 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 08:36:30,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080228346] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:30,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:30,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2025-02-08 08:36:30,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297954214] [2025-02-08 08:36:30,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:30,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 08:36:30,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:30,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 08:36:30,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2025-02-08 08:36:30,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:30,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 261 flow. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 08:36:30,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:30,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:30,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:30,621 INFO L124 PetriNetUnfolderBase]: 148/270 cut-off events. [2025-02-08 08:36:30,622 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2025-02-08 08:36:30,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 270 events. 148/270 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 947 event pairs, 24 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 924. Up to 211 conditions per place. [2025-02-08 08:36:30,623 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 48 selfloop transitions, 17 changer transitions 4/70 dead transitions. [2025-02-08 08:36:30,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 70 transitions, 525 flow [2025-02-08 08:36:30,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:36:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:36:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2025-02-08 08:36:30,624 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-08 08:36:30,624 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 261 flow. Second operand 8 states and 80 transitions. [2025-02-08 08:36:30,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 70 transitions, 525 flow [2025-02-08 08:36:30,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 475 flow, removed 16 selfloop flow, removed 3 redundant places. [2025-02-08 08:36:30,627 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 314 flow [2025-02-08 08:36:30,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=314, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2025-02-08 08:36:30,627 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2025-02-08 08:36:30,627 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 314 flow [2025-02-08 08:36:30,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 08:36:30,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:30,628 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:30,634 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 08:36:30,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:30,831 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:30,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:30,831 INFO L85 PathProgramCache]: Analyzing trace with hash 346717983, now seen corresponding path program 3 times [2025-02-08 08:36:30,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:30,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491731067] [2025-02-08 08:36:30,831 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:36:30,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:30,834 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-02-08 08:36:30,839 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:36:30,839 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:36:30,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:30,940 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 08:36:30,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:30,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491731067] [2025-02-08 08:36:30,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491731067] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:30,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791468909] [2025-02-08 08:36:30,941 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:36:30,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:30,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:30,943 INFO L229 MonitoredProcess]: Starting monitored process 7 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 08:36:30,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 08:36:30,971 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-02-08 08:36:30,982 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:36:30,982 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:36:30,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:30,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:36:30,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:31,025 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 08:36:31,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:31,091 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 08:36:31,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791468909] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:31,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:31,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2025-02-08 08:36:31,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593392347] [2025-02-08 08:36:31,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:31,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 08:36:31,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:31,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 08:36:31,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-08 08:36:31,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:31,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 314 flow. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 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 08:36:31,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:31,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:31,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:31,238 INFO L124 PetriNetUnfolderBase]: 186/341 cut-off events. [2025-02-08 08:36:31,238 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2025-02-08 08:36:31,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 341 events. 186/341 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1304 event pairs, 36 based on Foata normal form. 3/340 useless extension candidates. Maximal degree in co-relation 1215. Up to 240 conditions per place. [2025-02-08 08:36:31,241 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 55 selfloop transitions, 22 changer transitions 7/85 dead transitions. [2025-02-08 08:36:31,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 653 flow [2025-02-08 08:36:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:36:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 08:36:31,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2025-02-08 08:36:31,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.485 [2025-02-08 08:36:31,242 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 314 flow. Second operand 10 states and 97 transitions. [2025-02-08 08:36:31,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 653 flow [2025-02-08 08:36:31,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 85 transitions, 601 flow, removed 17 selfloop flow, removed 3 redundant places. [2025-02-08 08:36:31,246 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 404 flow [2025-02-08 08:36:31,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=404, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2025-02-08 08:36:31,247 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 40 predicate places. [2025-02-08 08:36:31,247 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 404 flow [2025-02-08 08:36:31,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 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 08:36:31,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:31,247 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:31,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 08:36:31,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-08 08:36:31,451 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:31,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1840028788, now seen corresponding path program 1 times [2025-02-08 08:36:31,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:31,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321253115] [2025-02-08 08:36:31,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:36:31,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:31,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:36:31,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:31,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:36:31,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:31,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:31,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321253115] [2025-02-08 08:36:31,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321253115] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:31,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203070287] [2025-02-08 08:36:31,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:36:31,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:31,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:31,780 INFO L229 MonitoredProcess]: Starting monitored process 8 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 08:36:31,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 08:36:31,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:36:31,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:31,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:36:31,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:31,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:36:31,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:32,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:32,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203070287] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:32,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:32,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 08:36:32,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535277059] [2025-02-08 08:36:32,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:32,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:36:32,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:32,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:36:32,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:36:32,356 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:32,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 404 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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 08:36:32,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:32,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:32,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:35,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:36:39,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:36:39,568 INFO L124 PetriNetUnfolderBase]: 256/488 cut-off events. [2025-02-08 08:36:39,568 INFO L125 PetriNetUnfolderBase]: For 962/962 co-relation queries the response was YES. [2025-02-08 08:36:39,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 488 events. 256/488 cut-off events. For 962/962 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2225 event pairs, 23 based on Foata normal form. 3/487 useless extension candidates. Maximal degree in co-relation 1724. Up to 237 conditions per place. [2025-02-08 08:36:39,572 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 83 selfloop transitions, 52 changer transitions 30/166 dead transitions. [2025-02-08 08:36:39,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 166 transitions, 1195 flow [2025-02-08 08:36:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 08:36:39,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-08 08:36:39,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 223 transitions. [2025-02-08 08:36:39,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46458333333333335 [2025-02-08 08:36:39,576 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 404 flow. Second operand 24 states and 223 transitions. [2025-02-08 08:36:39,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 166 transitions, 1195 flow [2025-02-08 08:36:39,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 166 transitions, 1129 flow, removed 27 selfloop flow, removed 3 redundant places. [2025-02-08 08:36:39,583 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 658 flow [2025-02-08 08:36:39,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=658, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2025-02-08 08:36:39,585 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 70 predicate places. [2025-02-08 08:36:39,585 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 658 flow [2025-02-08 08:36:39,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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 08:36:39,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:39,586 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:39,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 08:36:39,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:39,788 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:39,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:39,788 INFO L85 PathProgramCache]: Analyzing trace with hash 11349870, now seen corresponding path program 2 times [2025-02-08 08:36:39,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:39,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763910202] [2025-02-08 08:36:39,789 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:36:39,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:39,793 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:39,803 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:39,803 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:36:39,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:40,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:40,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763910202] [2025-02-08 08:36:40,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763910202] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:40,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640089506] [2025-02-08 08:36:40,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:36:40,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:40,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:40,095 INFO L229 MonitoredProcess]: Starting monitored process 9 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 08:36:40,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 08:36:40,118 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:40,131 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:40,131 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:36:40,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:40,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:36:40,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:40,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:40,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640089506] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:40,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:40,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2025-02-08 08:36:40,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562182913] [2025-02-08 08:36:40,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:40,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 08:36:40,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:40,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 08:36:40,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2025-02-08 08:36:40,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:40,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 658 flow. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 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 08:36:40,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:40,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:40,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:42,137 INFO L124 PetriNetUnfolderBase]: 290/562 cut-off events. [2025-02-08 08:36:42,137 INFO L125 PetriNetUnfolderBase]: For 2921/2921 co-relation queries the response was YES. [2025-02-08 08:36:42,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 562 events. 290/562 cut-off events. For 2921/2921 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2702 event pairs, 20 based on Foata normal form. 3/561 useless extension candidates. Maximal degree in co-relation 2540. Up to 246 conditions per place. [2025-02-08 08:36:42,148 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 89 selfloop transitions, 79 changer transitions 16/185 dead transitions. [2025-02-08 08:36:42,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 185 transitions, 1688 flow [2025-02-08 08:36:42,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 08:36:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-08 08:36:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 246 transitions. [2025-02-08 08:36:42,151 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2025-02-08 08:36:42,151 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 658 flow. Second operand 27 states and 246 transitions. [2025-02-08 08:36:42,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 185 transitions, 1688 flow [2025-02-08 08:36:42,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 185 transitions, 1487 flow, removed 80 selfloop flow, removed 12 redundant places. [2025-02-08 08:36:42,162 INFO L231 Difference]: Finished difference. Result has 109 places, 119 transitions, 1131 flow [2025-02-08 08:36:42,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1131, PETRI_PLACES=109, PETRI_TRANSITIONS=119} [2025-02-08 08:36:42,164 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 87 predicate places. [2025-02-08 08:36:42,164 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 119 transitions, 1131 flow [2025-02-08 08:36:42,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 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 08:36:42,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:42,164 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:42,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 08:36:42,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:42,369 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:42,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash -37805280, now seen corresponding path program 3 times [2025-02-08 08:36:42,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:42,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682010162] [2025-02-08 08:36:42,370 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:36:42,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:42,376 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:42,391 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:42,391 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:36:42,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:42,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:42,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682010162] [2025-02-08 08:36:42,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682010162] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:42,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49733378] [2025-02-08 08:36:42,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:36:42,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:42,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:42,724 INFO L229 MonitoredProcess]: Starting monitored process 10 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 08:36:42,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 08:36:42,751 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:42,778 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:42,778 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:36:42,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:42,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:36:42,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:42,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:43,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:43,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49733378] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:43,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:43,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2025-02-08 08:36:43,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309089331] [2025-02-08 08:36:43,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:43,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 08:36:43,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:43,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 08:36:43,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2025-02-08 08:36:43,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:43,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 119 transitions, 1131 flow. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 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 08:36:43,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:43,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:43,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:44,171 INFO L124 PetriNetUnfolderBase]: 289/559 cut-off events. [2025-02-08 08:36:44,171 INFO L125 PetriNetUnfolderBase]: For 3264/3264 co-relation queries the response was YES. [2025-02-08 08:36:44,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2896 conditions, 559 events. 289/559 cut-off events. For 3264/3264 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2679 event pairs, 20 based on Foata normal form. 3/556 useless extension candidates. Maximal degree in co-relation 2746. Up to 252 conditions per place. [2025-02-08 08:36:44,175 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 85 selfloop transitions, 81 changer transitions 14/181 dead transitions. [2025-02-08 08:36:44,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 181 transitions, 1824 flow [2025-02-08 08:36:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 08:36:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-08 08:36:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 216 transitions. [2025-02-08 08:36:44,177 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46956521739130436 [2025-02-08 08:36:44,177 INFO L175 Difference]: Start difference. First operand has 109 places, 119 transitions, 1131 flow. Second operand 23 states and 216 transitions. [2025-02-08 08:36:44,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 181 transitions, 1824 flow [2025-02-08 08:36:44,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 181 transitions, 1440 flow, removed 168 selfloop flow, removed 10 redundant places. [2025-02-08 08:36:44,192 INFO L231 Difference]: Finished difference. Result has 121 places, 124 transitions, 1071 flow [2025-02-08 08:36:44,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1071, PETRI_PLACES=121, PETRI_TRANSITIONS=124} [2025-02-08 08:36:44,193 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 99 predicate places. [2025-02-08 08:36:44,193 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 124 transitions, 1071 flow [2025-02-08 08:36:44,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 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 08:36:44,195 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:44,195 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:44,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 08:36:44,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:44,399 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:44,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:44,399 INFO L85 PathProgramCache]: Analyzing trace with hash -958790094, now seen corresponding path program 4 times [2025-02-08 08:36:44,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:44,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480384649] [2025-02-08 08:36:44,399 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:36:44,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:44,402 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:44,409 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:44,410 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:36:44,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:44,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:44,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480384649] [2025-02-08 08:36:44,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480384649] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:44,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402776313] [2025-02-08 08:36:44,627 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:36:44,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:44,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:44,632 INFO L229 MonitoredProcess]: Starting monitored process 11 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 08:36:44,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 08:36:44,670 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:44,721 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:44,721 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:36:44,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:44,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:36:44,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:44,873 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:45,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402776313] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:45,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:45,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 08:36:45,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66904243] [2025-02-08 08:36:45,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:45,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:36:45,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:45,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:36:45,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:36:45,641 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:45,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 124 transitions, 1071 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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 08:36:45,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:45,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:45,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:46,122 INFO L124 PetriNetUnfolderBase]: 327/630 cut-off events. [2025-02-08 08:36:46,122 INFO L125 PetriNetUnfolderBase]: For 2059/2059 co-relation queries the response was YES. [2025-02-08 08:36:46,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3008 conditions, 630 events. 327/630 cut-off events. For 2059/2059 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3108 event pairs, 37 based on Foata normal form. 3/619 useless extension candidates. Maximal degree in co-relation 2963. Up to 504 conditions per place. [2025-02-08 08:36:46,127 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 132 selfloop transitions, 37 changer transitions 14/184 dead transitions. [2025-02-08 08:36:46,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 184 transitions, 1803 flow [2025-02-08 08:36:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 08:36:46,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 08:36:46,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 147 transitions. [2025-02-08 08:36:46,128 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.459375 [2025-02-08 08:36:46,128 INFO L175 Difference]: Start difference. First operand has 121 places, 124 transitions, 1071 flow. Second operand 16 states and 147 transitions. [2025-02-08 08:36:46,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 184 transitions, 1803 flow [2025-02-08 08:36:46,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 184 transitions, 1626 flow, removed 42 selfloop flow, removed 17 redundant places. [2025-02-08 08:36:46,142 INFO L231 Difference]: Finished difference. Result has 127 places, 145 transitions, 1279 flow [2025-02-08 08:36:46,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1279, PETRI_PLACES=127, PETRI_TRANSITIONS=145} [2025-02-08 08:36:46,143 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 105 predicate places. [2025-02-08 08:36:46,143 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 145 transitions, 1279 flow [2025-02-08 08:36:46,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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 08:36:46,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:46,143 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:46,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 08:36:46,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:46,344 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:46,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:46,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1500754866, now seen corresponding path program 5 times [2025-02-08 08:36:46,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:46,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627100421] [2025-02-08 08:36:46,345 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:36:46,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:46,349 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:46,358 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:46,358 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:36:46,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:46,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:46,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627100421] [2025-02-08 08:36:46,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627100421] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:46,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424435518] [2025-02-08 08:36:46,633 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:36:46,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:46,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:46,635 INFO L229 MonitoredProcess]: Starting monitored process 12 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 08:36:46,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 08:36:46,661 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:46,686 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:46,687 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:36:46,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:46,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:36:46,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:46,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:46,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:48,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424435518] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:48,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:48,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 08:36:48,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596952498] [2025-02-08 08:36:48,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:48,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:36:48,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:48,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:36:48,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:36:48,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:48,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 145 transitions, 1279 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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 08:36:48,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:48,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:48,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:51,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:36:51,841 INFO L124 PetriNetUnfolderBase]: 343/671 cut-off events. [2025-02-08 08:36:51,842 INFO L125 PetriNetUnfolderBase]: For 2323/2323 co-relation queries the response was YES. [2025-02-08 08:36:51,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3375 conditions, 671 events. 343/671 cut-off events. For 2323/2323 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3410 event pairs, 40 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 3294. Up to 510 conditions per place. [2025-02-08 08:36:51,846 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 131 selfloop transitions, 51 changer transitions 11/194 dead transitions. [2025-02-08 08:36:51,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 194 transitions, 1978 flow [2025-02-08 08:36:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 08:36:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-08 08:36:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 160 transitions. [2025-02-08 08:36:51,846 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-02-08 08:36:51,847 INFO L175 Difference]: Start difference. First operand has 127 places, 145 transitions, 1279 flow. Second operand 18 states and 160 transitions. [2025-02-08 08:36:51,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 194 transitions, 1978 flow [2025-02-08 08:36:51,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 194 transitions, 1881 flow, removed 43 selfloop flow, removed 3 redundant places. [2025-02-08 08:36:51,858 INFO L231 Difference]: Finished difference. Result has 143 places, 156 transitions, 1494 flow [2025-02-08 08:36:51,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1494, PETRI_PLACES=143, PETRI_TRANSITIONS=156} [2025-02-08 08:36:51,859 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 121 predicate places. [2025-02-08 08:36:51,859 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 156 transitions, 1494 flow [2025-02-08 08:36:51,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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 08:36:51,859 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:51,859 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:51,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-08 08:36:52,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 08:36:52,063 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:52,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:52,063 INFO L85 PathProgramCache]: Analyzing trace with hash 527363732, now seen corresponding path program 4 times [2025-02-08 08:36:52,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:52,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563621717] [2025-02-08 08:36:52,064 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:36:52,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:52,066 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:52,080 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:52,080 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:36:52,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:52,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:52,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563621717] [2025-02-08 08:36:52,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563621717] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:52,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521365332] [2025-02-08 08:36:52,199 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:36:52,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:52,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:52,201 INFO L229 MonitoredProcess]: Starting monitored process 13 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 08:36:52,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 08:36:52,232 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:52,246 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:52,247 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:36:52,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:52,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 08:36:52,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:52,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:52,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521365332] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:52,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:52,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 18 [2025-02-08 08:36:52,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225067764] [2025-02-08 08:36:52,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:52,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:36:52,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:52,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:36:52,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2025-02-08 08:36:52,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:52,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 156 transitions, 1494 flow. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 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 08:36:52,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:52,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:52,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:52,950 INFO L124 PetriNetUnfolderBase]: 342/660 cut-off events. [2025-02-08 08:36:52,950 INFO L125 PetriNetUnfolderBase]: For 2670/2670 co-relation queries the response was YES. [2025-02-08 08:36:52,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3493 conditions, 660 events. 342/660 cut-off events. For 2670/2670 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3294 event pairs, 38 based on Foata normal form. 3/655 useless extension candidates. Maximal degree in co-relation 3397. Up to 547 conditions per place. [2025-02-08 08:36:52,955 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 135 selfloop transitions, 41 changer transitions 13/190 dead transitions. [2025-02-08 08:36:52,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 190 transitions, 2044 flow [2025-02-08 08:36:52,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 08:36:52,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 08:36:52,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 134 transitions. [2025-02-08 08:36:52,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41875 [2025-02-08 08:36:52,956 INFO L175 Difference]: Start difference. First operand has 143 places, 156 transitions, 1494 flow. Second operand 16 states and 134 transitions. [2025-02-08 08:36:52,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 190 transitions, 2044 flow [2025-02-08 08:36:52,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 190 transitions, 1896 flow, removed 49 selfloop flow, removed 9 redundant places. [2025-02-08 08:36:52,972 INFO L231 Difference]: Finished difference. Result has 154 places, 159 transitions, 1538 flow [2025-02-08 08:36:52,972 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1538, PETRI_PLACES=154, PETRI_TRANSITIONS=159} [2025-02-08 08:36:52,973 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 132 predicate places. [2025-02-08 08:36:52,973 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 159 transitions, 1538 flow [2025-02-08 08:36:52,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 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 08:36:52,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:52,974 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:52,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 08:36:53,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:53,175 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:53,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:53,175 INFO L85 PathProgramCache]: Analyzing trace with hash 627014186, now seen corresponding path program 6 times [2025-02-08 08:36:53,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:53,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921864950] [2025-02-08 08:36:53,175 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:36:53,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:53,179 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:53,186 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:53,186 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 08:36:53,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:53,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:53,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921864950] [2025-02-08 08:36:53,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921864950] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:53,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466915408] [2025-02-08 08:36:53,435 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:36:53,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:53,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:53,440 INFO L229 MonitoredProcess]: Starting monitored process 14 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 08:36:53,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 08:36:53,469 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:53,482 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:53,482 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 08:36:53,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:53,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:36:53,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:53,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:54,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466915408] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:54,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:54,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 08:36:54,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207346076] [2025-02-08 08:36:54,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:54,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:36:54,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:54,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:36:54,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:36:54,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:54,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 159 transitions, 1538 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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 08:36:54,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:54,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:54,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:54,915 INFO L124 PetriNetUnfolderBase]: 388/742 cut-off events. [2025-02-08 08:36:54,915 INFO L125 PetriNetUnfolderBase]: For 3819/3819 co-relation queries the response was YES. [2025-02-08 08:36:54,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4221 conditions, 742 events. 388/742 cut-off events. For 3819/3819 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3827 event pairs, 38 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 4115. Up to 587 conditions per place. [2025-02-08 08:36:54,922 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 166 selfloop transitions, 56 changer transitions 7/230 dead transitions. [2025-02-08 08:36:54,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 230 transitions, 2635 flow [2025-02-08 08:36:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 08:36:54,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 08:36:54,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 191 transitions. [2025-02-08 08:36:54,924 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4340909090909091 [2025-02-08 08:36:54,924 INFO L175 Difference]: Start difference. First operand has 154 places, 159 transitions, 1538 flow. Second operand 22 states and 191 transitions. [2025-02-08 08:36:54,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 230 transitions, 2635 flow [2025-02-08 08:36:54,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 230 transitions, 2505 flow, removed 22 selfloop flow, removed 13 redundant places. [2025-02-08 08:36:54,940 INFO L231 Difference]: Finished difference. Result has 167 places, 186 transitions, 2004 flow [2025-02-08 08:36:54,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1422, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2004, PETRI_PLACES=167, PETRI_TRANSITIONS=186} [2025-02-08 08:36:54,941 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 145 predicate places. [2025-02-08 08:36:54,941 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 186 transitions, 2004 flow [2025-02-08 08:36:54,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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 08:36:54,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:54,942 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:54,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 08:36:55,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:55,146 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:55,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash 577859036, now seen corresponding path program 7 times [2025-02-08 08:36:55,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:55,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169721301] [2025-02-08 08:36:55,147 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:36:55,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:55,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:36:55,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:55,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:36:55,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:55,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:55,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169721301] [2025-02-08 08:36:55,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169721301] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:55,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690690301] [2025-02-08 08:36:55,384 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:36:55,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:55,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:55,389 INFO L229 MonitoredProcess]: Starting monitored process 15 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 08:36:55,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 08:36:55,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:36:55,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:55,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:36:55,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:55,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:36:55,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:55,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:55,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:56,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690690301] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:56,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:56,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 08:36:56,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595235462] [2025-02-08 08:36:56,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:56,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:36:56,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:56,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:36:56,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:36:56,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:56,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 186 transitions, 2004 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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 08:36:56,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:56,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:56,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:56,841 INFO L124 PetriNetUnfolderBase]: 384/726 cut-off events. [2025-02-08 08:36:56,841 INFO L125 PetriNetUnfolderBase]: For 4653/4653 co-relation queries the response was YES. [2025-02-08 08:36:56,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4302 conditions, 726 events. 384/726 cut-off events. For 4653/4653 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3682 event pairs, 38 based on Foata normal form. 2/718 useless extension candidates. Maximal degree in co-relation 4215. Up to 587 conditions per place. [2025-02-08 08:36:56,847 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 157 selfloop transitions, 56 changer transitions 8/222 dead transitions. [2025-02-08 08:36:56,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 222 transitions, 2615 flow [2025-02-08 08:36:56,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 08:36:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 08:36:56,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 173 transitions. [2025-02-08 08:36:56,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4119047619047619 [2025-02-08 08:36:56,848 INFO L175 Difference]: Start difference. First operand has 167 places, 186 transitions, 2004 flow. Second operand 21 states and 173 transitions. [2025-02-08 08:36:56,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 222 transitions, 2615 flow [2025-02-08 08:36:56,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 222 transitions, 2369 flow, removed 107 selfloop flow, removed 8 redundant places. [2025-02-08 08:36:56,866 INFO L231 Difference]: Finished difference. Result has 182 places, 188 transitions, 1965 flow [2025-02-08 08:36:56,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1965, PETRI_PLACES=182, PETRI_TRANSITIONS=188} [2025-02-08 08:36:56,867 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 160 predicate places. [2025-02-08 08:36:56,867 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 188 transitions, 1965 flow [2025-02-08 08:36:56,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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 08:36:56,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:56,867 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:56,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 08:36:57,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-08 08:36:57,068 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:57,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:57,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1451599716, now seen corresponding path program 8 times [2025-02-08 08:36:57,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:57,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357607441] [2025-02-08 08:36:57,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:36:57,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:57,071 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:57,077 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:57,077 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:36:57,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:57,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:57,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357607441] [2025-02-08 08:36:57,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357607441] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:57,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83497028] [2025-02-08 08:36:57,300 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:36:57,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:57,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:57,303 INFO L229 MonitoredProcess]: Starting monitored process 16 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 08:36:57,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 08:36:57,328 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:57,354 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:57,354 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:36:57,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:57,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:36:57,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:57,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:36:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:58,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83497028] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:36:58,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:36:58,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2025-02-08 08:36:58,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227768905] [2025-02-08 08:36:58,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:36:58,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 08:36:58,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:36:58,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 08:36:58,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2025-02-08 08:36:58,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:36:58,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 188 transitions, 1965 flow. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 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 08:36:58,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:36:58,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:36:58,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:36:58,954 INFO L124 PetriNetUnfolderBase]: 384/723 cut-off events. [2025-02-08 08:36:58,954 INFO L125 PetriNetUnfolderBase]: For 4443/4443 co-relation queries the response was YES. [2025-02-08 08:36:58,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 723 events. 384/723 cut-off events. For 4443/4443 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3655 event pairs, 36 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4158. Up to 556 conditions per place. [2025-02-08 08:36:58,959 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 150 selfloop transitions, 62 changer transitions 8/221 dead transitions. [2025-02-08 08:36:58,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 221 transitions, 2575 flow [2025-02-08 08:36:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 08:36:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 08:36:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 144 transitions. [2025-02-08 08:36:58,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-08 08:36:58,960 INFO L175 Difference]: Start difference. First operand has 182 places, 188 transitions, 1965 flow. Second operand 16 states and 144 transitions. [2025-02-08 08:36:58,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 221 transitions, 2575 flow [2025-02-08 08:36:58,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 221 transitions, 2436 flow, removed 24 selfloop flow, removed 18 redundant places. [2025-02-08 08:36:58,986 INFO L231 Difference]: Finished difference. Result has 179 places, 190 transitions, 2037 flow [2025-02-08 08:36:58,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2037, PETRI_PLACES=179, PETRI_TRANSITIONS=190} [2025-02-08 08:36:58,987 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 157 predicate places. [2025-02-08 08:36:58,987 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 190 transitions, 2037 flow [2025-02-08 08:36:58,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 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 08:36:58,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:36:58,988 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:36:58,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-08 08:36:59,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 08:36:59,189 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:36:59,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:36:59,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1091329520, now seen corresponding path program 9 times [2025-02-08 08:36:59,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:36:59,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322503022] [2025-02-08 08:36:59,189 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:36:59,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:36:59,191 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:59,196 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:59,196 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:36:59,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:59,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:36:59,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322503022] [2025-02-08 08:36:59,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322503022] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:36:59,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098678403] [2025-02-08 08:36:59,389 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:36:59,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:36:59,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:36:59,392 INFO L229 MonitoredProcess]: Starting monitored process 17 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 08:36:59,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 08:36:59,414 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:36:59,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:36:59,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:36:59,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:36:59,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:36:59,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:36:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:36:59,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:00,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098678403] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:00,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:00,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 08:37:00,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737153612] [2025-02-08 08:37:00,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:00,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:37:00,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:00,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:37:00,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:37:00,279 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:37:00,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 190 transitions, 2037 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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 08:37:00,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:00,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:37:00,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:00,877 INFO L124 PetriNetUnfolderBase]: 385/737 cut-off events. [2025-02-08 08:37:00,878 INFO L125 PetriNetUnfolderBase]: For 4382/4382 co-relation queries the response was YES. [2025-02-08 08:37:00,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4359 conditions, 737 events. 385/737 cut-off events. For 4382/4382 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3766 event pairs, 38 based on Foata normal form. 3/730 useless extension candidates. Maximal degree in co-relation 4245. Up to 635 conditions per place. [2025-02-08 08:37:00,883 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 173 selfloop transitions, 43 changer transitions 7/224 dead transitions. [2025-02-08 08:37:00,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 224 transitions, 2696 flow [2025-02-08 08:37:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 08:37:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-08 08:37:00,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 149 transitions. [2025-02-08 08:37:00,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2025-02-08 08:37:00,884 INFO L175 Difference]: Start difference. First operand has 179 places, 190 transitions, 2037 flow. Second operand 18 states and 149 transitions. [2025-02-08 08:37:00,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 224 transitions, 2696 flow [2025-02-08 08:37:00,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 224 transitions, 2613 flow, removed 24 selfloop flow, removed 10 redundant places. [2025-02-08 08:37:00,902 INFO L231 Difference]: Finished difference. Result has 191 places, 195 transitions, 2169 flow [2025-02-08 08:37:00,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2169, PETRI_PLACES=191, PETRI_TRANSITIONS=195} [2025-02-08 08:37:00,902 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 169 predicate places. [2025-02-08 08:37:00,902 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 195 transitions, 2169 flow [2025-02-08 08:37:00,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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 08:37:00,903 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:00,903 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:37:00,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-08 08:37:01,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-08 08:37:01,106 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:37:01,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:01,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1983199184, now seen corresponding path program 10 times [2025-02-08 08:37:01,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:01,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077410006] [2025-02-08 08:37:01,106 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:37:01,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:01,109 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:01,115 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:01,115 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:37:01,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:01,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:01,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077410006] [2025-02-08 08:37:01,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077410006] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:01,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019117475] [2025-02-08 08:37:01,330 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:37:01,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:01,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:01,332 INFO L229 MonitoredProcess]: Starting monitored process 18 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 08:37:01,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 08:37:01,358 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:01,388 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:01,388 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:37:01,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:01,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:37:01,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:01,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:02,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019117475] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:02,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:02,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 08:37:02,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407287646] [2025-02-08 08:37:02,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:02,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:37:02,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:02,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:37:02,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:37:02,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:37:02,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 195 transitions, 2169 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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 08:37:02,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:02,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:37:02,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:03,005 INFO L124 PetriNetUnfolderBase]: 427/817 cut-off events. [2025-02-08 08:37:03,005 INFO L125 PetriNetUnfolderBase]: For 6185/6185 co-relation queries the response was YES. [2025-02-08 08:37:03,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5118 conditions, 817 events. 427/817 cut-off events. For 6185/6185 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4284 event pairs, 40 based on Foata normal form. 2/809 useless extension candidates. Maximal degree in co-relation 5045. Up to 649 conditions per place. [2025-02-08 08:37:03,011 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 190 selfloop transitions, 60 changer transitions 8/259 dead transitions. [2025-02-08 08:37:03,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 259 transitions, 3281 flow [2025-02-08 08:37:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 08:37:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-08 08:37:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 205 transitions. [2025-02-08 08:37:03,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2025-02-08 08:37:03,013 INFO L175 Difference]: Start difference. First operand has 191 places, 195 transitions, 2169 flow. Second operand 24 states and 205 transitions. [2025-02-08 08:37:03,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 259 transitions, 3281 flow [2025-02-08 08:37:03,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 259 transitions, 3173 flow, removed 29 selfloop flow, removed 12 redundant places. [2025-02-08 08:37:03,036 INFO L231 Difference]: Finished difference. Result has 210 places, 215 transitions, 2641 flow [2025-02-08 08:37:03,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2641, PETRI_PLACES=210, PETRI_TRANSITIONS=215} [2025-02-08 08:37:03,037 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 188 predicate places. [2025-02-08 08:37:03,037 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 215 transitions, 2641 flow [2025-02-08 08:37:03,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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 08:37:03,037 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:03,038 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:37:03,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 08:37:03,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 08:37:03,242 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:37:03,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1998669428, now seen corresponding path program 11 times [2025-02-08 08:37:03,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:03,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127820777] [2025-02-08 08:37:03,243 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:37:03,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:03,245 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:03,250 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:03,250 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:37:03,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:03,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:03,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127820777] [2025-02-08 08:37:03,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127820777] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:03,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463399553] [2025-02-08 08:37:03,436 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:37:03,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:03,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:03,439 INFO L229 MonitoredProcess]: Starting monitored process 19 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 08:37:03,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 08:37:03,467 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:03,480 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:03,480 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:37:03,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:03,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:37:03,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:03,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:04,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463399553] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:04,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:04,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-02-08 08:37:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390938147] [2025-02-08 08:37:04,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:04,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:37:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:04,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:37:04,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2025-02-08 08:37:04,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:37:04,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 215 transitions, 2641 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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 08:37:04,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:04,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:37:04,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:09,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:37:13,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:37:13,954 INFO L124 PetriNetUnfolderBase]: 473/914 cut-off events. [2025-02-08 08:37:13,955 INFO L125 PetriNetUnfolderBase]: For 10208/10208 co-relation queries the response was YES. [2025-02-08 08:37:13,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6037 conditions, 914 events. 473/914 cut-off events. For 10208/10208 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5012 event pairs, 35 based on Foata normal form. 3/907 useless extension candidates. Maximal degree in co-relation 5909. Up to 683 conditions per place. [2025-02-08 08:37:13,968 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 195 selfloop transitions, 74 changer transitions 27/297 dead transitions. [2025-02-08 08:37:13,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 297 transitions, 3949 flow [2025-02-08 08:37:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 08:37:13,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-08 08:37:13,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 207 transitions. [2025-02-08 08:37:13,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43125 [2025-02-08 08:37:13,970 INFO L175 Difference]: Start difference. First operand has 210 places, 215 transitions, 2641 flow. Second operand 24 states and 207 transitions. [2025-02-08 08:37:13,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 297 transitions, 3949 flow [2025-02-08 08:37:14,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 297 transitions, 3553 flow, removed 161 selfloop flow, removed 20 redundant places. [2025-02-08 08:37:14,007 INFO L231 Difference]: Finished difference. Result has 222 places, 240 transitions, 2806 flow [2025-02-08 08:37:14,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2806, PETRI_PLACES=222, PETRI_TRANSITIONS=240} [2025-02-08 08:37:14,007 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 200 predicate places. [2025-02-08 08:37:14,007 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 240 transitions, 2806 flow [2025-02-08 08:37:14,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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 08:37:14,008 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:14,008 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:37:14,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-08 08:37:14,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:14,208 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:37:14,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash 544259808, now seen corresponding path program 12 times [2025-02-08 08:37:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:14,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132804418] [2025-02-08 08:37:14,209 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:37:14,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:14,211 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:14,220 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:14,220 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 08:37:14,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:14,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:14,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132804418] [2025-02-08 08:37:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132804418] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:14,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507505910] [2025-02-08 08:37:14,505 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:37:14,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:14,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:14,510 INFO L229 MonitoredProcess]: Starting monitored process 20 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 08:37:14,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 08:37:14,547 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:14,598 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:14,599 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 08:37:14,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:14,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:37:14,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:14,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:14,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507505910] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:14,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:14,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-02-08 08:37:14,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303654719] [2025-02-08 08:37:14,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:14,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:37:14,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:14,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:37:14,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2025-02-08 08:37:14,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:37:14,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 240 transitions, 2806 flow. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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 08:37:14,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:14,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:37:14,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:16,035 INFO L124 PetriNetUnfolderBase]: 504/974 cut-off events. [2025-02-08 08:37:16,035 INFO L125 PetriNetUnfolderBase]: For 13043/13043 co-relation queries the response was YES. [2025-02-08 08:37:16,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6754 conditions, 974 events. 504/974 cut-off events. For 13043/13043 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5450 event pairs, 36 based on Foata normal form. 3/963 useless extension candidates. Maximal degree in co-relation 6624. Up to 681 conditions per place. [2025-02-08 08:37:16,045 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 196 selfloop transitions, 105 changer transitions 13/315 dead transitions. [2025-02-08 08:37:16,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 315 transitions, 4370 flow [2025-02-08 08:37:16,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 08:37:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-08 08:37:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 234 transitions. [2025-02-08 08:37:16,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2025-02-08 08:37:16,047 INFO L175 Difference]: Start difference. First operand has 222 places, 240 transitions, 2806 flow. Second operand 27 states and 234 transitions. [2025-02-08 08:37:16,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 315 transitions, 4370 flow [2025-02-08 08:37:16,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 315 transitions, 4023 flow, removed 152 selfloop flow, removed 11 redundant places. [2025-02-08 08:37:16,097 INFO L231 Difference]: Finished difference. Result has 239 places, 263 transitions, 3371 flow [2025-02-08 08:37:16,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2503, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3371, PETRI_PLACES=239, PETRI_TRANSITIONS=263} [2025-02-08 08:37:16,098 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 217 predicate places. [2025-02-08 08:37:16,098 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 263 transitions, 3371 flow [2025-02-08 08:37:16,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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 08:37:16,098 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:16,099 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:37:16,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 08:37:16,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:16,300 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:37:16,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:16,300 INFO L85 PathProgramCache]: Analyzing trace with hash -587168296, now seen corresponding path program 13 times [2025-02-08 08:37:16,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:16,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893989552] [2025-02-08 08:37:16,301 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:37:16,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:16,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:37:16,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:16,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:37:16,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:16,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:16,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893989552] [2025-02-08 08:37:16,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893989552] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:16,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499885747] [2025-02-08 08:37:16,598 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:37:16,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:16,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:16,603 INFO L229 MonitoredProcess]: Starting monitored process 21 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 08:37:16,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 08:37:16,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 08:37:16,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:16,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:37:16,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:16,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:37:16,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:16,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:17,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499885747] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:17,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:17,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 08:37:17,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382695271] [2025-02-08 08:37:17,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:17,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:37:17,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:17,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:37:17,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:37:17,604 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:37:17,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 263 transitions, 3371 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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 08:37:17,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:17,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:37:17,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:18,221 INFO L124 PetriNetUnfolderBase]: 510/989 cut-off events. [2025-02-08 08:37:18,221 INFO L125 PetriNetUnfolderBase]: For 13458/13458 co-relation queries the response was YES. [2025-02-08 08:37:18,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6969 conditions, 989 events. 510/989 cut-off events. For 13458/13458 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5524 event pairs, 41 based on Foata normal form. 3/976 useless extension candidates. Maximal degree in co-relation 6837. Up to 866 conditions per place. [2025-02-08 08:37:18,229 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 243 selfloop transitions, 46 changer transitions 7/297 dead transitions. [2025-02-08 08:37:18,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 297 transitions, 4162 flow [2025-02-08 08:37:18,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 08:37:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-08 08:37:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 154 transitions. [2025-02-08 08:37:18,230 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2025-02-08 08:37:18,230 INFO L175 Difference]: Start difference. First operand has 239 places, 263 transitions, 3371 flow. Second operand 18 states and 154 transitions. [2025-02-08 08:37:18,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 297 transitions, 4162 flow [2025-02-08 08:37:18,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 297 transitions, 3638 flow, removed 226 selfloop flow, removed 10 redundant places. [2025-02-08 08:37:18,291 INFO L231 Difference]: Finished difference. Result has 247 places, 266 transitions, 3016 flow [2025-02-08 08:37:18,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3016, PETRI_PLACES=247, PETRI_TRANSITIONS=266} [2025-02-08 08:37:18,292 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 225 predicate places. [2025-02-08 08:37:18,292 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 266 transitions, 3016 flow [2025-02-08 08:37:18,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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 08:37:18,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:18,292 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:37:18,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-08 08:37:18,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:18,493 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:37:18,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:18,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2038610444, now seen corresponding path program 14 times [2025-02-08 08:37:18,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:18,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53031245] [2025-02-08 08:37:18,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:37:18,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:18,496 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:18,500 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:18,500 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:37:18,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:18,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:18,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53031245] [2025-02-08 08:37:18,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53031245] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:18,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250278034] [2025-02-08 08:37:18,747 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:37:18,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:18,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:18,748 INFO L229 MonitoredProcess]: Starting monitored process 22 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 08:37:18,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 08:37:18,777 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:18,789 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:18,789 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:37:18,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:18,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:37:18,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:18,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:19,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250278034] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:19,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:19,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2025-02-08 08:37:19,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513210683] [2025-02-08 08:37:19,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:19,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 08:37:19,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:19,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 08:37:19,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-02-08 08:37:19,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:37:19,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 266 transitions, 3016 flow. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 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 08:37:19,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:19,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:37:19,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:21,057 INFO L124 PetriNetUnfolderBase]: 504/967 cut-off events. [2025-02-08 08:37:21,057 INFO L125 PetriNetUnfolderBase]: For 9233/9233 co-relation queries the response was YES. [2025-02-08 08:37:21,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6251 conditions, 967 events. 504/967 cut-off events. For 9233/9233 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5344 event pairs, 36 based on Foata normal form. 2/951 useless extension candidates. Maximal degree in co-relation 6128. Up to 811 conditions per place. [2025-02-08 08:37:21,062 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 231 selfloop transitions, 60 changer transitions 8/300 dead transitions. [2025-02-08 08:37:21,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 300 transitions, 3771 flow [2025-02-08 08:37:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 08:37:21,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-08 08:37:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 171 transitions. [2025-02-08 08:37:21,067 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4275 [2025-02-08 08:37:21,067 INFO L175 Difference]: Start difference. First operand has 247 places, 266 transitions, 3016 flow. Second operand 20 states and 171 transitions. [2025-02-08 08:37:21,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 300 transitions, 3771 flow [2025-02-08 08:37:21,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 300 transitions, 3643 flow, removed 23 selfloop flow, removed 16 redundant places. [2025-02-08 08:37:21,116 INFO L231 Difference]: Finished difference. Result has 252 places, 267 transitions, 3093 flow [2025-02-08 08:37:21,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2884, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3093, PETRI_PLACES=252, PETRI_TRANSITIONS=267} [2025-02-08 08:37:21,117 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 230 predicate places. [2025-02-08 08:37:21,117 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 267 transitions, 3093 flow [2025-02-08 08:37:21,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 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 08:37:21,117 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:21,117 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:37:21,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 08:37:21,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-02-08 08:37:21,318 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:37:21,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:21,318 INFO L85 PathProgramCache]: Analyzing trace with hash -553473942, now seen corresponding path program 15 times [2025-02-08 08:37:21,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:21,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867294939] [2025-02-08 08:37:21,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:37:21,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:21,321 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:21,326 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:21,326 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:37:21,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:21,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867294939] [2025-02-08 08:37:21,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867294939] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112922684] [2025-02-08 08:37:21,518 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:37:21,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:21,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:21,521 INFO L229 MonitoredProcess]: Starting monitored process 23 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 08:37:21,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 08:37:21,543 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:21,555 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:21,555 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:37:21,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:21,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:37:21,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:21,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:22,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112922684] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:22,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:22,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 08:37:22,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774045171] [2025-02-08 08:37:22,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:22,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:37:22,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:22,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:37:22,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:37:22,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:37:22,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 267 transitions, 3093 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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 08:37:22,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:22,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:37:22,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:23,326 INFO L124 PetriNetUnfolderBase]: 516/987 cut-off events. [2025-02-08 08:37:23,326 INFO L125 PetriNetUnfolderBase]: For 11174/11174 co-relation queries the response was YES. [2025-02-08 08:37:23,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6669 conditions, 987 events. 516/987 cut-off events. For 11174/11174 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5474 event pairs, 45 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 6551. Up to 885 conditions per place. [2025-02-08 08:37:23,333 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 247 selfloop transitions, 45 changer transitions 6/299 dead transitions. [2025-02-08 08:37:23,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 299 transitions, 4076 flow [2025-02-08 08:37:23,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 08:37:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 08:37:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 133 transitions. [2025-02-08 08:37:23,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.415625 [2025-02-08 08:37:23,334 INFO L175 Difference]: Start difference. First operand has 252 places, 267 transitions, 3093 flow. Second operand 16 states and 133 transitions. [2025-02-08 08:37:23,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 299 transitions, 4076 flow [2025-02-08 08:37:23,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 299 transitions, 3909 flow, removed 35 selfloop flow, removed 16 redundant places. [2025-02-08 08:37:23,389 INFO L231 Difference]: Finished difference. Result has 252 places, 275 transitions, 3307 flow [2025-02-08 08:37:23,389 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2928, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3307, PETRI_PLACES=252, PETRI_TRANSITIONS=275} [2025-02-08 08:37:23,390 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 230 predicate places. [2025-02-08 08:37:23,390 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 275 transitions, 3307 flow [2025-02-08 08:37:23,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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 08:37:23,390 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:23,390 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:37:23,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-08 08:37:23,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-02-08 08:37:23,594 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:37:23,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash 593414958, now seen corresponding path program 16 times [2025-02-08 08:37:23,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:23,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302450705] [2025-02-08 08:37:23,595 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:37:23,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:23,597 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:23,601 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:23,601 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:37:23,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:23,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:23,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302450705] [2025-02-08 08:37:23,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302450705] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:23,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516120268] [2025-02-08 08:37:23,816 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:37:23,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:23,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:23,819 INFO L229 MonitoredProcess]: Starting monitored process 24 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 08:37:23,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 08:37:23,847 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:23,902 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:23,902 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:37:23,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:23,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:37:23,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:24,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:24,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:24,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516120268] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:24,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:24,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-02-08 08:37:24,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003733936] [2025-02-08 08:37:24,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:24,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:37:24,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:24,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:37:24,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2025-02-08 08:37:24,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:37:24,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 275 transitions, 3307 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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 08:37:24,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:24,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:37:24,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:25,439 INFO L124 PetriNetUnfolderBase]: 517/992 cut-off events. [2025-02-08 08:37:25,439 INFO L125 PetriNetUnfolderBase]: For 10338/10338 co-relation queries the response was YES. [2025-02-08 08:37:25,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6571 conditions, 992 events. 517/992 cut-off events. For 10338/10338 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5529 event pairs, 38 based on Foata normal form. 3/981 useless extension candidates. Maximal degree in co-relation 6453. Up to 708 conditions per place. [2025-02-08 08:37:25,445 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 209 selfloop transitions, 107 changer transitions 12/329 dead transitions. [2025-02-08 08:37:25,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 329 transitions, 4293 flow [2025-02-08 08:37:25,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 08:37:25,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-08 08:37:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 229 transitions. [2025-02-08 08:37:25,450 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4403846153846154 [2025-02-08 08:37:25,450 INFO L175 Difference]: Start difference. First operand has 252 places, 275 transitions, 3307 flow. Second operand 26 states and 229 transitions. [2025-02-08 08:37:25,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 329 transitions, 4293 flow [2025-02-08 08:37:25,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 329 transitions, 4065 flow, removed 84 selfloop flow, removed 13 redundant places. [2025-02-08 08:37:25,518 INFO L231 Difference]: Finished difference. Result has 265 places, 279 transitions, 3467 flow [2025-02-08 08:37:25,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3467, PETRI_PLACES=265, PETRI_TRANSITIONS=279} [2025-02-08 08:37:25,519 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 243 predicate places. [2025-02-08 08:37:25,519 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 279 transitions, 3467 flow [2025-02-08 08:37:25,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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 08:37:25,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:25,519 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:37:25,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-08 08:37:25,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-08 08:37:25,720 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:37:25,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:25,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1115714614, now seen corresponding path program 17 times [2025-02-08 08:37:25,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:25,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294173770] [2025-02-08 08:37:25,721 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:37:25,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:25,722 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:25,727 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:25,727 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:37:25,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:26,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:26,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294173770] [2025-02-08 08:37:26,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294173770] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:26,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810135749] [2025-02-08 08:37:26,053 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:37:26,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:26,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:26,055 INFO L229 MonitoredProcess]: Starting monitored process 25 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 08:37:26,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 08:37:26,080 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:26,097 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:26,097 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:37:26,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:26,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:37:26,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:26,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810135749] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:26,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:26,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 08:37:26,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159965444] [2025-02-08 08:37:26,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:27,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:37:27,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:27,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:37:27,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:37:27,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:37:27,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 279 transitions, 3467 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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 08:37:27,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:27,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:37:27,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:32,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:37:32,306 INFO L124 PetriNetUnfolderBase]: 540/1033 cut-off events. [2025-02-08 08:37:32,306 INFO L125 PetriNetUnfolderBase]: For 13859/13859 co-relation queries the response was YES. [2025-02-08 08:37:32,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7309 conditions, 1033 events. 540/1033 cut-off events. For 13859/13859 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5786 event pairs, 42 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 7215. Up to 869 conditions per place. [2025-02-08 08:37:32,312 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 246 selfloop transitions, 64 changer transitions 8/319 dead transitions. [2025-02-08 08:37:32,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 319 transitions, 4631 flow [2025-02-08 08:37:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 08:37:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-08 08:37:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 150 transitions. [2025-02-08 08:37:32,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2025-02-08 08:37:32,314 INFO L175 Difference]: Start difference. First operand has 265 places, 279 transitions, 3467 flow. Second operand 18 states and 150 transitions. [2025-02-08 08:37:32,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 319 transitions, 4631 flow [2025-02-08 08:37:32,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 319 transitions, 4256 flow, removed 125 selfloop flow, removed 20 redundant places. [2025-02-08 08:37:32,368 INFO L231 Difference]: Finished difference. Result has 264 places, 289 transitions, 3587 flow [2025-02-08 08:37:32,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3587, PETRI_PLACES=264, PETRI_TRANSITIONS=289} [2025-02-08 08:37:32,369 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 242 predicate places. [2025-02-08 08:37:32,369 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 289 transitions, 3587 flow [2025-02-08 08:37:32,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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 08:37:32,369 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:32,369 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:37:32,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 08:37:32,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-08 08:37:32,573 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:37:32,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:32,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1164869764, now seen corresponding path program 18 times [2025-02-08 08:37:32,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:32,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723896713] [2025-02-08 08:37:32,573 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:37:32,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:32,575 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:32,579 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:32,579 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 08:37:32,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:32,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723896713] [2025-02-08 08:37:32,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723896713] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:32,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005578355] [2025-02-08 08:37:32,819 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:37:32,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:32,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:32,821 INFO L229 MonitoredProcess]: Starting monitored process 26 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 08:37:32,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-08 08:37:32,847 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 08:37:32,859 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 08:37:32,859 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 08:37:32,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:32,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 08:37:32,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:32,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:33,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005578355] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:33,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:33,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 08:37:33,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244786716] [2025-02-08 08:37:33,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:33,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:37:33,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:33,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:37:33,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:37:33,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:37:33,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 289 transitions, 3587 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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 08:37:33,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:33,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:37:33,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:34,083 INFO L124 PetriNetUnfolderBase]: 537/1032 cut-off events. [2025-02-08 08:37:34,083 INFO L125 PetriNetUnfolderBase]: For 11074/11074 co-relation queries the response was YES. [2025-02-08 08:37:34,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7146 conditions, 1032 events. 537/1032 cut-off events. For 11074/11074 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5801 event pairs, 42 based on Foata normal form. 2/1018 useless extension candidates. Maximal degree in co-relation 7022. Up to 871 conditions per place. [2025-02-08 08:37:34,093 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 249 selfloop transitions, 65 changer transitions 7/322 dead transitions. [2025-02-08 08:37:34,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 322 transitions, 4531 flow [2025-02-08 08:37:34,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 08:37:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-08 08:37:34,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 161 transitions. [2025-02-08 08:37:34,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4236842105263158 [2025-02-08 08:37:34,097 INFO L175 Difference]: Start difference. First operand has 264 places, 289 transitions, 3587 flow. Second operand 19 states and 161 transitions. [2025-02-08 08:37:34,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 322 transitions, 4531 flow [2025-02-08 08:37:34,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 322 transitions, 4255 flow, removed 110 selfloop flow, removed 11 redundant places. [2025-02-08 08:37:34,146 INFO L231 Difference]: Finished difference. Result has 272 places, 292 transitions, 3626 flow [2025-02-08 08:37:34,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3363, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3626, PETRI_PLACES=272, PETRI_TRANSITIONS=292} [2025-02-08 08:37:34,147 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 250 predicate places. [2025-02-08 08:37:34,147 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 292 transitions, 3626 flow [2025-02-08 08:37:34,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 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 08:37:34,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:34,147 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:37:34,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-08 08:37:34,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-08 08:37:34,347 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:37:34,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:34,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1038562981, now seen corresponding path program 19 times [2025-02-08 08:37:34,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:34,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289996529] [2025-02-08 08:37:34,348 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:37:34,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:34,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:37:34,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:37:34,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:37:34,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:34,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:34,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289996529] [2025-02-08 08:37:34,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289996529] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:34,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227247811] [2025-02-08 08:37:34,714 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:37:34,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:34,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:34,717 INFO L229 MonitoredProcess]: Starting monitored process 27 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 08:37:34,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-08 08:37:34,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:37:34,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:37:34,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:37:34,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:34,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 08:37:34,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:34,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:39,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227247811] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:39,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:39,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2025-02-08 08:37:39,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062083467] [2025-02-08 08:37:39,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:39,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 08:37:39,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:39,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 08:37:39,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=336, Unknown=1, NotChecked=0, Total=420 [2025-02-08 08:37:39,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:37:39,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 292 transitions, 3626 flow. Second operand has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 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 08:37:39,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:39,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:37:39,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:43,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:37:48,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:37:52,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:37:57,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:38:01,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 08:38:01,308 INFO L124 PetriNetUnfolderBase]: 643/1223 cut-off events. [2025-02-08 08:38:01,308 INFO L125 PetriNetUnfolderBase]: For 20568/20568 co-relation queries the response was YES. [2025-02-08 08:38:01,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9121 conditions, 1223 events. 643/1223 cut-off events. For 20568/20568 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7080 event pairs, 26 based on Foata normal form. 4/1209 useless extension candidates. Maximal degree in co-relation 9023. Up to 819 conditions per place. [2025-02-08 08:38:01,315 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 269 selfloop transitions, 113 changer transitions 22/405 dead transitions. [2025-02-08 08:38:01,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 405 transitions, 5761 flow [2025-02-08 08:38:01,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 08:38:01,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-02-08 08:38:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 295 transitions. [2025-02-08 08:38:01,316 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2025-02-08 08:38:01,316 INFO L175 Difference]: Start difference. First operand has 272 places, 292 transitions, 3626 flow. Second operand 33 states and 295 transitions. [2025-02-08 08:38:01,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 405 transitions, 5761 flow [2025-02-08 08:38:01,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 405 transitions, 5492 flow, removed 99 selfloop flow, removed 15 redundant places. [2025-02-08 08:38:01,380 INFO L231 Difference]: Finished difference. Result has 299 places, 328 transitions, 4475 flow [2025-02-08 08:38:01,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3369, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4475, PETRI_PLACES=299, PETRI_TRANSITIONS=328} [2025-02-08 08:38:01,381 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 277 predicate places. [2025-02-08 08:38:01,381 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 328 transitions, 4475 flow [2025-02-08 08:38:01,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 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 08:38:01,382 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:01,382 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:38:01,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-08 08:38:01,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-08 08:38:01,586 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:38:01,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:01,587 INFO L85 PathProgramCache]: Analyzing trace with hash 444245211, now seen corresponding path program 5 times [2025-02-08 08:38:01,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:01,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407571158] [2025-02-08 08:38:01,587 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:38:01,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:01,589 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 08:38:01,593 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:38:01,593 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:38:01,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:01,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:01,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407571158] [2025-02-08 08:38:01,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407571158] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:38:01,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228434586] [2025-02-08 08:38:01,670 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:38:01,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:38:01,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:38:01,672 INFO L229 MonitoredProcess]: Starting monitored process 28 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 08:38:01,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-08 08:38:01,697 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 08:38:01,719 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:38:01,719 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:38:01,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:01,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 08:38:01,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:38:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:01,901 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:38:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:02,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228434586] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:38:02,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:38:02,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 21 [2025-02-08 08:38:02,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914295877] [2025-02-08 08:38:02,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:38:02,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-08 08:38:02,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:02,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-08 08:38:02,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2025-02-08 08:38:02,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:38:02,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 328 transitions, 4475 flow. Second operand has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 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 08:38:02,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:02,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:38:02,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:38:03,413 INFO L124 PetriNetUnfolderBase]: 725/1354 cut-off events. [2025-02-08 08:38:03,413 INFO L125 PetriNetUnfolderBase]: For 25599/25599 co-relation queries the response was YES. [2025-02-08 08:38:03,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10673 conditions, 1354 events. 725/1354 cut-off events. For 25599/25599 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7880 event pairs, 9 based on Foata normal form. 3/1339 useless extension candidates. Maximal degree in co-relation 10565. Up to 500 conditions per place. [2025-02-08 08:38:03,423 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 185 selfloop transitions, 243 changer transitions 12/441 dead transitions. [2025-02-08 08:38:03,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 441 transitions, 6736 flow [2025-02-08 08:38:03,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 08:38:03,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-02-08 08:38:03,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 255 transitions. [2025-02-08 08:38:03,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4396551724137931 [2025-02-08 08:38:03,424 INFO L175 Difference]: Start difference. First operand has 299 places, 328 transitions, 4475 flow. Second operand 29 states and 255 transitions. [2025-02-08 08:38:03,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 441 transitions, 6736 flow [2025-02-08 08:38:03,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 441 transitions, 6008 flow, removed 339 selfloop flow, removed 13 redundant places. [2025-02-08 08:38:03,541 INFO L231 Difference]: Finished difference. Result has 315 places, 370 transitions, 5502 flow [2025-02-08 08:38:03,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3849, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5502, PETRI_PLACES=315, PETRI_TRANSITIONS=370} [2025-02-08 08:38:03,542 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 293 predicate places. [2025-02-08 08:38:03,543 INFO L471 AbstractCegarLoop]: Abstraction has has 315 places, 370 transitions, 5502 flow [2025-02-08 08:38:03,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 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 08:38:03,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:03,543 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:38:03,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-02-08 08:38:03,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-08 08:38:03,748 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:38:03,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:03,748 INFO L85 PathProgramCache]: Analyzing trace with hash -642973383, now seen corresponding path program 6 times [2025-02-08 08:38:03,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:03,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144920320] [2025-02-08 08:38:03,749 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:38:03,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:03,751 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-02-08 08:38:03,754 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:38:03,755 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 08:38:03,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:03,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:03,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144920320] [2025-02-08 08:38:03,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144920320] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:38:03,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737887217] [2025-02-08 08:38:03,869 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:38:03,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:38:03,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:38:03,872 INFO L229 MonitoredProcess]: Starting monitored process 29 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 08:38:03,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-08 08:38:03,893 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-02-08 08:38:03,908 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:38:03,908 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 08:38:03,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:03,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 08:38:03,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:38:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:03,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:38:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:38:04,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737887217] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:38:04,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:38:04,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2025-02-08 08:38:04,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518044839] [2025-02-08 08:38:04,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:38:04,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 08:38:04,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:04,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 08:38:04,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-02-08 08:38:04,097 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2025-02-08 08:38:04,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 370 transitions, 5502 flow. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 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 08:38:04,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:04,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2025-02-08 08:38:04,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand