./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-100.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-theta/unwind2-100.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:15:43,946 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:15:44,007 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 13:15:44,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:15:44,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:15:44,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:15:44,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:15:44,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:15:44,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:15:44,025 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:15:44,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:15:44,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:15:44,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:15:44,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:15:44,029 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:15:44,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:15:44,029 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:15:44,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:15:44,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:15:44,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:15:44,029 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:15:44,029 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:15:44,029 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:15:44,029 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:15:44,030 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:15:44,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:15:44,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:15:44,030 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 -> 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 [2025-02-06 13:15:44,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:15:44,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:15:44,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:15:44,310 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:15:44,310 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:15:44,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-100.i [2025-02-06 13:15:45,534 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/63b7ab58a/909df4c9b71048e290f79ce0ce6c5109/FLAGd5f0b3a2b [2025-02-06 13:15:45,810 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:15:45,811 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i [2025-02-06 13:15:45,828 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/63b7ab58a/909df4c9b71048e290f79ce0ce6c5109/FLAGd5f0b3a2b [2025-02-06 13:15:45,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/63b7ab58a/909df4c9b71048e290f79ce0ce6c5109 [2025-02-06 13:15:45,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:15:45,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:15:45,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:15:45,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:15:45,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:15:45,860 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:15:45" (1/1) ... [2025-02-06 13:15:45,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36758f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:45, skipping insertion in model container [2025-02-06 13:15:45,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:15:45" (1/1) ... [2025-02-06 13:15:45,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:15:46,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:15:46,098 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:15:46,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:15:46,175 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:15:46,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46 WrapperNode [2025-02-06 13:15:46,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:15:46,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:15:46,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:15:46,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:15:46,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (1/1) ... [2025-02-06 13:15:46,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (1/1) ... [2025-02-06 13:15:46,205 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 79 [2025-02-06 13:15:46,206 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:15:46,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:15:46,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:15:46,207 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:15:46,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (1/1) ... [2025-02-06 13:15:46,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (1/1) ... [2025-02-06 13:15:46,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (1/1) ... [2025-02-06 13:15:46,230 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 13:15:46,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (1/1) ... [2025-02-06 13:15:46,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (1/1) ... [2025-02-06 13:15:46,236 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (1/1) ... [2025-02-06 13:15:46,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (1/1) ... [2025-02-06 13:15:46,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (1/1) ... [2025-02-06 13:15:46,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (1/1) ... [2025-02-06 13:15:46,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:15:46,245 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:15:46,245 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:15:46,245 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:15:46,248 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (1/1) ... [2025-02-06 13:15:46,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:15:46,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:46,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 13:15:46,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 13:15:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:15:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-02-06 13:15:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-02-06 13:15:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-06 13:15:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-06 13:15:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:15:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:15:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:15:46,295 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 13:15:46,381 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:15:46,384 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:15:46,528 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:15:46,528 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:15:46,626 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:15:46,627 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:15:46,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:15:46 BoogieIcfgContainer [2025-02-06 13:15:46,627 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:15:46,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:15:46,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:15:46,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:15:46,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:15:45" (1/3) ... [2025-02-06 13:15:46,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255fd6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:15:46, skipping insertion in model container [2025-02-06 13:15:46,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:46" (2/3) ... [2025-02-06 13:15:46,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255fd6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:15:46, skipping insertion in model container [2025-02-06 13:15:46,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:15:46" (3/3) ... [2025-02-06 13:15:46,634 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-100.i [2025-02-06 13:15:46,645 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:15:46,648 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-100.i that has 3 procedures, 33 locations, 1 initial locations, 2 loop locations, and 3 error locations. [2025-02-06 13:15:46,648 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:15:46,687 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 13:15:46,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2025-02-06 13:15:46,741 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2025-02-06 13:15:46,744 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 13:15:46,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-02-06 13:15:46,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2025-02-06 13:15:46,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 82 flow [2025-02-06 13:15:46,764 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:15:46,773 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;@7f61833b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:15:46,774 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-02-06 13:15:46,781 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:15:46,781 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2025-02-06 13:15:46,781 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 13:15:46,781 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:46,784 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:46,784 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:46,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:46,789 INFO L85 PathProgramCache]: Analyzing trace with hash 771893669, now seen corresponding path program 1 times [2025-02-06 13:15:46,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:46,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456964490] [2025-02-06 13:15:46,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:46,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:46,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 13:15:46,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 13:15:46,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:46,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:47,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:47,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456964490] [2025-02-06 13:15:47,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456964490] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:47,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:47,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:15:47,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487822235] [2025-02-06 13:15:47,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:47,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 13:15:47,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:47,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 13:15:47,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 13:15:47,117 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:47,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:47,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:47,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:47,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:47,415 INFO L124 PetriNetUnfolderBase]: 287/602 cut-off events. [2025-02-06 13:15:47,415 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-02-06 13:15:47,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 602 events. 287/602 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3090 event pairs, 42 based on Foata normal form. 112/658 useless extension candidates. Maximal degree in co-relation 1048. Up to 215 conditions per place. [2025-02-06 13:15:47,421 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 58 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2025-02-06 13:15:47,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 74 transitions, 307 flow [2025-02-06 13:15:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:15:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:15:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2025-02-06 13:15:47,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-02-06 13:15:47,432 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 7 states and 152 transitions. [2025-02-06 13:15:47,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 74 transitions, 307 flow [2025-02-06 13:15:47,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 13:15:47,442 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 111 flow [2025-02-06 13:15:47,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2025-02-06 13:15:47,448 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2025-02-06 13:15:47,450 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 111 flow [2025-02-06 13:15:47,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:47,450 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:47,450 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:47,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:15:47,451 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:47,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:47,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1842085899, now seen corresponding path program 1 times [2025-02-06 13:15:47,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:47,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894885283] [2025-02-06 13:15:47,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:47,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:47,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 13:15:47,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 13:15:47,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:47,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:47,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:47,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894885283] [2025-02-06 13:15:47,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894885283] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:15:47,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051212678] [2025-02-06 13:15:47,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:47,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:47,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:47,560 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:15:47,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 13:15:47,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 13:15:47,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 13:15:47,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:47,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:47,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 13:15:47,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:47,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:15:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:47,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051212678] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:15:47,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:15:47,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-06 13:15:47,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699071362] [2025-02-06 13:15:47,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:15:47,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 13:15:47,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:47,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 13:15:47,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-06 13:15:47,817 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:47,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 111 flow. Second operand has 14 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:47,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:47,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:47,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:48,277 INFO L124 PetriNetUnfolderBase]: 401/812 cut-off events. [2025-02-06 13:15:48,277 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2025-02-06 13:15:48,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 812 events. 401/812 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4218 event pairs, 42 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 747. Up to 215 conditions per place. [2025-02-06 13:15:48,285 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 103 selfloop transitions, 17 changer transitions 0/128 dead transitions. [2025-02-06 13:15:48,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 128 transitions, 592 flow [2025-02-06 13:15:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 13:15:48,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 13:15:48,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 256 transitions. [2025-02-06 13:15:48,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5182186234817814 [2025-02-06 13:15:48,290 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 111 flow. Second operand 13 states and 256 transitions. [2025-02-06 13:15:48,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 128 transitions, 592 flow [2025-02-06 13:15:48,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 128 transitions, 578 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 13:15:48,297 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 222 flow [2025-02-06 13:15:48,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=222, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2025-02-06 13:15:48,299 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2025-02-06 13:15:48,300 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 222 flow [2025-02-06 13:15:48,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:48,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:48,300 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:48,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 13:15:48,505 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 [2025-02-06 13:15:48,505 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:48,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:48,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1083822304, now seen corresponding path program 1 times [2025-02-06 13:15:48,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:48,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860809661] [2025-02-06 13:15:48,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:48,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:48,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 13:15:48,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 13:15:48,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:48,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:48,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:48,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860809661] [2025-02-06 13:15:48,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860809661] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:48,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:48,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:15:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546822345] [2025-02-06 13:15:48,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:48,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 13:15:48,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:48,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 13:15:48,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 13:15:48,591 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:48,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:48,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:48,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:48,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:48,810 INFO L124 PetriNetUnfolderBase]: 463/950 cut-off events. [2025-02-06 13:15:48,811 INFO L125 PetriNetUnfolderBase]: For 1506/1506 co-relation queries the response was YES. [2025-02-06 13:15:48,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2673 conditions, 950 events. 463/950 cut-off events. For 1506/1506 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5067 event pairs, 134 based on Foata normal form. 0/904 useless extension candidates. Maximal degree in co-relation 1652. Up to 322 conditions per place. [2025-02-06 13:15:48,816 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 75 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2025-02-06 13:15:48,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 96 transitions, 703 flow [2025-02-06 13:15:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:15:48,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:15:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2025-02-06 13:15:48,817 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5075187969924813 [2025-02-06 13:15:48,817 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 222 flow. Second operand 7 states and 135 transitions. [2025-02-06 13:15:48,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 96 transitions, 703 flow [2025-02-06 13:15:48,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 96 transitions, 583 flow, removed 45 selfloop flow, removed 5 redundant places. [2025-02-06 13:15:48,825 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 241 flow [2025-02-06 13:15:48,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=241, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2025-02-06 13:15:48,826 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2025-02-06 13:15:48,826 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 241 flow [2025-02-06 13:15:48,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:48,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:48,826 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:48,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 13:15:48,826 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:48,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash -762232793, now seen corresponding path program 1 times [2025-02-06 13:15:48,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:48,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085670] [2025-02-06 13:15:48,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:48,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:48,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 13:15:48,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 13:15:48,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:48,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:48,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:48,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085670] [2025-02-06 13:15:48,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085670] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:15:48,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041406986] [2025-02-06 13:15:48,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:48,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:48,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:48,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:15:48,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 13:15:48,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 13:15:48,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 13:15:48,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:48,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:48,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 13:15:48,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:49,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:15:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:49,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041406986] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:15:49,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:15:49,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-06 13:15:49,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403833643] [2025-02-06 13:15:49,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:15:49,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 13:15:49,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:49,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 13:15:49,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-06 13:15:49,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:49,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 241 flow. Second operand has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:49,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:49,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:49,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:49,453 INFO L124 PetriNetUnfolderBase]: 649/1274 cut-off events. [2025-02-06 13:15:49,453 INFO L125 PetriNetUnfolderBase]: For 2141/2141 co-relation queries the response was YES. [2025-02-06 13:15:49,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 1274 events. 649/1274 cut-off events. For 2141/2141 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6937 event pairs, 134 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 2272. Up to 322 conditions per place. [2025-02-06 13:15:49,463 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 144 selfloop transitions, 22 changer transitions 0/174 dead transitions. [2025-02-06 13:15:49,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 174 transitions, 1207 flow [2025-02-06 13:15:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 13:15:49,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 13:15:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 253 transitions. [2025-02-06 13:15:49,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5121457489878543 [2025-02-06 13:15:49,465 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 241 flow. Second operand 13 states and 253 transitions. [2025-02-06 13:15:49,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 174 transitions, 1207 flow [2025-02-06 13:15:49,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 174 transitions, 1188 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 13:15:49,475 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 366 flow [2025-02-06 13:15:49,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=366, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2025-02-06 13:15:49,476 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2025-02-06 13:15:49,476 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 366 flow [2025-02-06 13:15:49,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:49,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:49,476 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:49,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 13:15:49,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:49,677 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:49,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:49,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1661732332, now seen corresponding path program 1 times [2025-02-06 13:15:49,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:49,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404910753] [2025-02-06 13:15:49,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:49,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:49,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 13:15:49,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:15:49,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:49,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:49,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:49,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404910753] [2025-02-06 13:15:49,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404910753] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:49,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:49,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:15:49,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061541121] [2025-02-06 13:15:49,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:49,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 13:15:49,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:49,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 13:15:49,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 13:15:49,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:49,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:49,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:49,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:49,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:50,029 INFO L124 PetriNetUnfolderBase]: 676/1341 cut-off events. [2025-02-06 13:15:50,030 INFO L125 PetriNetUnfolderBase]: For 4430/4430 co-relation queries the response was YES. [2025-02-06 13:15:50,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 1341 events. 676/1341 cut-off events. For 4430/4430 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7413 event pairs, 170 based on Foata normal form. 18/1355 useless extension candidates. Maximal degree in co-relation 3002. Up to 519 conditions per place. [2025-02-06 13:15:50,037 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 70 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2025-02-06 13:15:50,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 93 transitions, 744 flow [2025-02-06 13:15:50,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 13:15:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 13:15:50,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2025-02-06 13:15:50,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2025-02-06 13:15:50,039 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 366 flow. Second operand 6 states and 113 transitions. [2025-02-06 13:15:50,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 93 transitions, 744 flow [2025-02-06 13:15:50,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 93 transitions, 666 flow, removed 27 selfloop flow, removed 5 redundant places. [2025-02-06 13:15:50,050 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 354 flow [2025-02-06 13:15:50,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2025-02-06 13:15:50,051 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2025-02-06 13:15:50,051 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 354 flow [2025-02-06 13:15:50,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:50,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:50,052 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:50,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 13:15:50,052 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:50,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1628350555, now seen corresponding path program 1 times [2025-02-06 13:15:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:50,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045732352] [2025-02-06 13:15:50,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:50,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:50,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 13:15:50,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:15:50,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:50,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:50,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:50,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045732352] [2025-02-06 13:15:50,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045732352] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:50,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:50,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:15:50,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843189754] [2025-02-06 13:15:50,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:50,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 13:15:50,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:50,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 13:15:50,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 13:15:50,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:50,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:50,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:50,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:50,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:50,334 INFO L124 PetriNetUnfolderBase]: 704/1402 cut-off events. [2025-02-06 13:15:50,334 INFO L125 PetriNetUnfolderBase]: For 4660/4660 co-relation queries the response was YES. [2025-02-06 13:15:50,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 1402 events. 704/1402 cut-off events. For 4660/4660 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7888 event pairs, 166 based on Foata normal form. 19/1415 useless extension candidates. Maximal degree in co-relation 2907. Up to 559 conditions per place. [2025-02-06 13:15:50,344 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 75 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2025-02-06 13:15:50,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 98 transitions, 740 flow [2025-02-06 13:15:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 13:15:50,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 13:15:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2025-02-06 13:15:50,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2025-02-06 13:15:50,345 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 354 flow. Second operand 6 states and 117 transitions. [2025-02-06 13:15:50,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 98 transitions, 740 flow [2025-02-06 13:15:50,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 710 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-02-06 13:15:50,358 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 373 flow [2025-02-06 13:15:50,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=373, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2025-02-06 13:15:50,360 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2025-02-06 13:15:50,361 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 373 flow [2025-02-06 13:15:50,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:50,361 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:50,362 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:50,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 13:15:50,362 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:50,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1762837083, now seen corresponding path program 2 times [2025-02-06 13:15:50,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:50,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016702138] [2025-02-06 13:15:50,363 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:15:50,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:50,371 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 13:15:50,378 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:15:50,381 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:15:50,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:50,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:50,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016702138] [2025-02-06 13:15:50,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016702138] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:15:50,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942844572] [2025-02-06 13:15:50,493 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:15:50,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:50,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:50,496 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:15:50,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 13:15:50,533 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 13:15:50,541 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:15:50,541 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:15:50,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:50,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 13:15:50,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:50,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:15:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:50,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942844572] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:15:50,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:15:50,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-02-06 13:15:50,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850821825] [2025-02-06 13:15:50,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:15:50,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 13:15:50,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:50,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 13:15:50,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-02-06 13:15:50,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:50,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 373 flow. Second operand has 23 states, 23 states have (on average 11.173913043478262) internal successors, (257), 23 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:50,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:50,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:50,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:51,424 INFO L124 PetriNetUnfolderBase]: 1094/2068 cut-off events. [2025-02-06 13:15:51,424 INFO L125 PetriNetUnfolderBase]: For 15599/15599 co-relation queries the response was YES. [2025-02-06 13:15:51,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7436 conditions, 2068 events. 1094/2068 cut-off events. For 15599/15599 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11412 event pairs, 143 based on Foata normal form. 264/2330 useless extension candidates. Maximal degree in co-relation 5588. Up to 385 conditions per place. [2025-02-06 13:15:51,442 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 297 selfloop transitions, 40 changer transitions 0/345 dead transitions. [2025-02-06 13:15:51,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 345 transitions, 2689 flow [2025-02-06 13:15:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 13:15:51,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-06 13:15:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 490 transitions. [2025-02-06 13:15:51,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2025-02-06 13:15:51,445 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 373 flow. Second operand 25 states and 490 transitions. [2025-02-06 13:15:51,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 345 transitions, 2689 flow [2025-02-06 13:15:51,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 345 transitions, 2558 flow, removed 55 selfloop flow, removed 3 redundant places. [2025-02-06 13:15:51,469 INFO L231 Difference]: Finished difference. Result has 110 places, 79 transitions, 660 flow [2025-02-06 13:15:51,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=660, PETRI_PLACES=110, PETRI_TRANSITIONS=79} [2025-02-06 13:15:51,470 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 74 predicate places. [2025-02-06 13:15:51,470 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 79 transitions, 660 flow [2025-02-06 13:15:51,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.173913043478262) internal successors, (257), 23 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:51,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:51,471 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:51,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 13:15:51,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:51,675 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:51,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:51,675 INFO L85 PathProgramCache]: Analyzing trace with hash 618942726, now seen corresponding path program 1 times [2025-02-06 13:15:51,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:51,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085792694] [2025-02-06 13:15:51,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:51,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:51,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 13:15:51,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 13:15:51,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:51,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:51,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:51,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085792694] [2025-02-06 13:15:51,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085792694] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:15:51,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444401558] [2025-02-06 13:15:51,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:51,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:51,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:51,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:15:51,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 13:15:51,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 13:15:51,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 13:15:51,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:51,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:51,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 13:15:51,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:51,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:15:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:51,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444401558] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:15:51,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:15:51,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-06 13:15:51,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170279079] [2025-02-06 13:15:51,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:15:51,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 13:15:51,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:51,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 13:15:51,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-06 13:15:51,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:51,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 79 transitions, 660 flow. Second operand has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:51,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:51,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:51,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:52,260 INFO L124 PetriNetUnfolderBase]: 1175/2227 cut-off events. [2025-02-06 13:15:52,260 INFO L125 PetriNetUnfolderBase]: For 24710/24710 co-relation queries the response was YES. [2025-02-06 13:15:52,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9303 conditions, 2227 events. 1175/2227 cut-off events. For 24710/24710 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12620 event pairs, 265 based on Foata normal form. 54/2279 useless extension candidates. Maximal degree in co-relation 6912. Up to 876 conditions per place. [2025-02-06 13:15:52,272 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 119 selfloop transitions, 24 changer transitions 0/151 dead transitions. [2025-02-06 13:15:52,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 151 transitions, 1475 flow [2025-02-06 13:15:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 13:15:52,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 13:15:52,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2025-02-06 13:15:52,274 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2025-02-06 13:15:52,274 INFO L175 Difference]: Start difference. First operand has 110 places, 79 transitions, 660 flow. Second operand 9 states and 166 transitions. [2025-02-06 13:15:52,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 151 transitions, 1475 flow [2025-02-06 13:15:52,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 151 transitions, 1235 flow, removed 84 selfloop flow, removed 12 redundant places. [2025-02-06 13:15:52,318 INFO L231 Difference]: Finished difference. Result has 109 places, 82 transitions, 584 flow [2025-02-06 13:15:52,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=584, PETRI_PLACES=109, PETRI_TRANSITIONS=82} [2025-02-06 13:15:52,320 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 73 predicate places. [2025-02-06 13:15:52,321 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 82 transitions, 584 flow [2025-02-06 13:15:52,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:52,321 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:52,321 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:52,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 13:15:52,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-06 13:15:52,522 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:52,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:52,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1061726196, now seen corresponding path program 1 times [2025-02-06 13:15:52,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:52,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928144065] [2025-02-06 13:15:52,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:52,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:52,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 13:15:52,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 13:15:52,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:52,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:52,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:52,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928144065] [2025-02-06 13:15:52,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928144065] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:15:52,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793745823] [2025-02-06 13:15:52,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:52,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:52,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:52,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:15:52,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 13:15:52,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 13:15:52,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 13:15:52,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:52,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:52,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 13:15:52,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:52,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:15:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:52,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793745823] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:15:52,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:15:52,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-06 13:15:52,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550827965] [2025-02-06 13:15:52,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:15:52,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 13:15:52,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:52,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 13:15:52,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-06 13:15:52,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:52,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 82 transitions, 584 flow. Second operand has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:52,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:52,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:52,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:53,099 INFO L124 PetriNetUnfolderBase]: 1313/2448 cut-off events. [2025-02-06 13:15:53,100 INFO L125 PetriNetUnfolderBase]: For 21094/21094 co-relation queries the response was YES. [2025-02-06 13:15:53,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9203 conditions, 2448 events. 1313/2448 cut-off events. For 21094/21094 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 13868 event pairs, 146 based on Foata normal form. 93/2539 useless extension candidates. Maximal degree in co-relation 6370. Up to 964 conditions per place. [2025-02-06 13:15:53,114 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 147 selfloop transitions, 24 changer transitions 0/179 dead transitions. [2025-02-06 13:15:53,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 179 transitions, 1582 flow [2025-02-06 13:15:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 13:15:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 13:15:53,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2025-02-06 13:15:53,117 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2025-02-06 13:15:53,117 INFO L175 Difference]: Start difference. First operand has 109 places, 82 transitions, 584 flow. Second operand 9 states and 173 transitions. [2025-02-06 13:15:53,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 179 transitions, 1582 flow [2025-02-06 13:15:53,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 179 transitions, 1504 flow, removed 15 selfloop flow, removed 5 redundant places. [2025-02-06 13:15:53,155 INFO L231 Difference]: Finished difference. Result has 115 places, 85 transitions, 604 flow [2025-02-06 13:15:53,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=604, PETRI_PLACES=115, PETRI_TRANSITIONS=85} [2025-02-06 13:15:53,156 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 79 predicate places. [2025-02-06 13:15:53,156 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 85 transitions, 604 flow [2025-02-06 13:15:53,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:53,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:53,156 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:53,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 13:15:53,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:53,357 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:53,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1163990368, now seen corresponding path program 2 times [2025-02-06 13:15:53,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:53,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85217561] [2025-02-06 13:15:53,357 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:15:53,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:53,362 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-06 13:15:53,368 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:15:53,368 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:15:53,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:53,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85217561] [2025-02-06 13:15:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85217561] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:15:53,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875934197] [2025-02-06 13:15:53,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:15:53,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:53,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:53,450 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) [2025-02-06 13:15:53,451 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 [2025-02-06 13:15:53,480 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-06 13:15:53,487 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:15:53,488 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:15:53,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:53,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 13:15:53,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:53,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:15:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:53,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875934197] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:15:53,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:15:53,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-02-06 13:15:53,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698821941] [2025-02-06 13:15:53,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:15:53,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 13:15:53,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:53,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 13:15:53,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-02-06 13:15:53,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:53,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 85 transitions, 604 flow. Second operand has 23 states, 23 states have (on average 11.347826086956522) internal successors, (261), 23 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:53,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:53,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:53,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:54,445 INFO L124 PetriNetUnfolderBase]: 1973/3637 cut-off events. [2025-02-06 13:15:54,445 INFO L125 PetriNetUnfolderBase]: For 59123/59123 co-relation queries the response was YES. [2025-02-06 13:15:54,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14469 conditions, 3637 events. 1973/3637 cut-off events. For 59123/59123 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 21290 event pairs, 348 based on Foata normal form. 444/4079 useless extension candidates. Maximal degree in co-relation 11311. Up to 822 conditions per place. [2025-02-06 13:15:54,472 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 468 selfloop transitions, 46 changer transitions 0/522 dead transitions. [2025-02-06 13:15:54,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 522 transitions, 4531 flow [2025-02-06 13:15:54,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 13:15:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-06 13:15:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 487 transitions. [2025-02-06 13:15:54,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5126315789473684 [2025-02-06 13:15:54,475 INFO L175 Difference]: Start difference. First operand has 115 places, 85 transitions, 604 flow. Second operand 25 states and 487 transitions. [2025-02-06 13:15:54,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 522 transitions, 4531 flow [2025-02-06 13:15:54,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 522 transitions, 4421 flow, removed 15 selfloop flow, removed 5 redundant places. [2025-02-06 13:15:54,568 INFO L231 Difference]: Finished difference. Result has 146 places, 103 transitions, 868 flow [2025-02-06 13:15:54,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=868, PETRI_PLACES=146, PETRI_TRANSITIONS=103} [2025-02-06 13:15:54,569 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 110 predicate places. [2025-02-06 13:15:54,569 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 103 transitions, 868 flow [2025-02-06 13:15:54,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.347826086956522) internal successors, (261), 23 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:54,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:54,569 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:54,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 13:15:54,770 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,SelfDestructingSolverStorable9 [2025-02-06 13:15:54,770 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:54,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash -663147522, now seen corresponding path program 2 times [2025-02-06 13:15:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:54,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828296663] [2025-02-06 13:15:54,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:15:54,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:54,777 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-06 13:15:54,783 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 13:15:54,783 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:15:54,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:54,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:54,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828296663] [2025-02-06 13:15:54,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828296663] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:15:54,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409978404] [2025-02-06 13:15:54,870 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:15:54,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:54,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:54,872 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) [2025-02-06 13:15:54,873 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 [2025-02-06 13:15:54,904 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-06 13:15:54,915 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 13:15:54,916 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:15:54,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:54,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 13:15:54,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:54,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:15:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:55,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409978404] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:15:55,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:15:55,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-02-06 13:15:55,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912530909] [2025-02-06 13:15:55,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:15:55,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 13:15:55,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:55,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 13:15:55,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-02-06 13:15:55,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:55,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 103 transitions, 868 flow. Second operand has 23 states, 23 states have (on average 11.521739130434783) internal successors, (265), 23 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:55,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:55,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:55,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:55,864 INFO L124 PetriNetUnfolderBase]: 2243/4051 cut-off events. [2025-02-06 13:15:55,864 INFO L125 PetriNetUnfolderBase]: For 93637/93637 co-relation queries the response was YES. [2025-02-06 13:15:55,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18744 conditions, 4051 events. 2243/4051 cut-off events. For 93637/93637 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23777 event pairs, 280 based on Foata normal form. 180/4229 useless extension candidates. Maximal degree in co-relation 14006. Up to 1581 conditions per place. [2025-02-06 13:15:55,890 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 254 selfloop transitions, 36 changer transitions 0/298 dead transitions. [2025-02-06 13:15:55,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 298 transitions, 3465 flow [2025-02-06 13:15:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 13:15:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 13:15:55,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 271 transitions. [2025-02-06 13:15:55,892 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47543859649122805 [2025-02-06 13:15:55,892 INFO L175 Difference]: Start difference. First operand has 146 places, 103 transitions, 868 flow. Second operand 15 states and 271 transitions. [2025-02-06 13:15:55,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 298 transitions, 3465 flow [2025-02-06 13:15:56,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 298 transitions, 2673 flow, removed 312 selfloop flow, removed 12 redundant places. [2025-02-06 13:15:56,061 INFO L231 Difference]: Finished difference. Result has 154 places, 109 transitions, 846 flow [2025-02-06 13:15:56,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=846, PETRI_PLACES=154, PETRI_TRANSITIONS=109} [2025-02-06 13:15:56,062 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 118 predicate places. [2025-02-06 13:15:56,062 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 109 transitions, 846 flow [2025-02-06 13:15:56,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.521739130434783) internal successors, (265), 23 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:56,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:56,063 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:56,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 13:15:56,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:56,263 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:56,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:56,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1570081947, now seen corresponding path program 2 times [2025-02-06 13:15:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:56,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021670127] [2025-02-06 13:15:56,264 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:15:56,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:56,268 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-06 13:15:56,274 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 13:15:56,274 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:15:56,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:56,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:56,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:56,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021670127] [2025-02-06 13:15:56,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021670127] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:15:56,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149463212] [2025-02-06 13:15:56,384 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:15:56,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:56,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:56,386 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) [2025-02-06 13:15:56,387 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 [2025-02-06 13:15:56,424 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-06 13:15:56,435 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 13:15:56,435 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:15:56,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:56,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 13:15:56,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:56,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:15:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:56,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149463212] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:15:56,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:15:56,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-02-06 13:15:56,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298574078] [2025-02-06 13:15:56,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:15:56,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 13:15:56,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:56,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 13:15:56,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-02-06 13:15:56,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:56,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 109 transitions, 846 flow. Second operand has 23 states, 23 states have (on average 11.521739130434783) internal successors, (265), 23 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:56,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:56,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:56,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:57,425 INFO L124 PetriNetUnfolderBase]: 2519/4497 cut-off events. [2025-02-06 13:15:57,425 INFO L125 PetriNetUnfolderBase]: For 110994/110994 co-relation queries the response was YES. [2025-02-06 13:15:57,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19191 conditions, 4497 events. 2519/4497 cut-off events. For 110994/110994 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 26366 event pairs, 296 based on Foata normal form. 186/4683 useless extension candidates. Maximal degree in co-relation 14315. Up to 2026 conditions per place. [2025-02-06 13:15:57,462 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 273 selfloop transitions, 36 changer transitions 0/317 dead transitions. [2025-02-06 13:15:57,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 317 transitions, 3056 flow [2025-02-06 13:15:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 13:15:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 13:15:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 284 transitions. [2025-02-06 13:15:57,464 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4982456140350877 [2025-02-06 13:15:57,464 INFO L175 Difference]: Start difference. First operand has 154 places, 109 transitions, 846 flow. Second operand 15 states and 284 transitions. [2025-02-06 13:15:57,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 317 transitions, 3056 flow [2025-02-06 13:15:57,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 317 transitions, 2916 flow, removed 37 selfloop flow, removed 8 redundant places. [2025-02-06 13:15:57,659 INFO L231 Difference]: Finished difference. Result has 166 places, 115 transitions, 882 flow [2025-02-06 13:15:57,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=882, PETRI_PLACES=166, PETRI_TRANSITIONS=115} [2025-02-06 13:15:57,661 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 130 predicate places. [2025-02-06 13:15:57,661 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 115 transitions, 882 flow [2025-02-06 13:15:57,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.521739130434783) internal successors, (265), 23 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:57,662 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:57,662 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:57,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 13:15:57,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:57,863 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:57,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:57,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1476336549, now seen corresponding path program 3 times [2025-02-06 13:15:57,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:57,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372854327] [2025-02-06 13:15:57,863 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:15:57,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:57,871 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 6 equivalence classes. [2025-02-06 13:15:57,873 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 11 of 19 statements. [2025-02-06 13:15:57,874 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:15:57,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:57,950 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 13:15:57,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372854327] [2025-02-06 13:15:57,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372854327] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:15:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871594725] [2025-02-06 13:15:57,951 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:15:57,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:57,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:57,954 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) [2025-02-06 13:15:57,970 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 [2025-02-06 13:15:58,001 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 6 equivalence classes. [2025-02-06 13:15:58,008 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 11 of 19 statements. [2025-02-06 13:15:58,009 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:15:58,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:58,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 13:15:58,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 13:15:58,044 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 13:15:58,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871594725] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:58,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 13:15:58,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-02-06 13:15:58,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36089725] [2025-02-06 13:15:58,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:58,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 13:15:58,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:58,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 13:15:58,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 13:15:58,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:58,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 115 transitions, 882 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:58,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:58,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:58,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:58,687 INFO L124 PetriNetUnfolderBase]: 2586/4680 cut-off events. [2025-02-06 13:15:58,688 INFO L125 PetriNetUnfolderBase]: For 100954/100954 co-relation queries the response was YES. [2025-02-06 13:15:58,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20470 conditions, 4680 events. 2586/4680 cut-off events. For 100954/100954 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 27881 event pairs, 698 based on Foata normal form. 86/4764 useless extension candidates. Maximal degree in co-relation 14894. Up to 1617 conditions per place. [2025-02-06 13:15:58,736 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 228 selfloop transitions, 32 changer transitions 0/268 dead transitions. [2025-02-06 13:15:58,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 268 transitions, 2785 flow [2025-02-06 13:15:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 13:15:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 13:15:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2025-02-06 13:15:58,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2025-02-06 13:15:58,741 INFO L175 Difference]: Start difference. First operand has 166 places, 115 transitions, 882 flow. Second operand 9 states and 184 transitions. [2025-02-06 13:15:58,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 268 transitions, 2785 flow [2025-02-06 13:15:58,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 268 transitions, 2395 flow, removed 148 selfloop flow, removed 8 redundant places. [2025-02-06 13:15:58,997 INFO L231 Difference]: Finished difference. Result has 168 places, 121 transitions, 974 flow [2025-02-06 13:15:58,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=974, PETRI_PLACES=168, PETRI_TRANSITIONS=121} [2025-02-06 13:15:58,997 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 132 predicate places. [2025-02-06 13:15:58,998 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 121 transitions, 974 flow [2025-02-06 13:15:58,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:58,998 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:58,998 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:59,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 13:15:59,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:59,198 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:15:59,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash -681038528, now seen corresponding path program 3 times [2025-02-06 13:15:59,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:59,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667300282] [2025-02-06 13:15:59,199 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:15:59,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:59,208 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-02-06 13:15:59,215 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 21 statements. [2025-02-06 13:15:59,215 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:15:59,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 13:15:59,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:59,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667300282] [2025-02-06 13:15:59,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667300282] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:15:59,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376175175] [2025-02-06 13:15:59,295 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:15:59,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:59,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:59,297 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) [2025-02-06 13:15:59,299 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 [2025-02-06 13:15:59,334 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-02-06 13:15:59,342 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 21 statements. [2025-02-06 13:15:59,342 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:15:59,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:59,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 13:15:59,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 13:15:59,378 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 13:15:59,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376175175] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:59,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 13:15:59,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-02-06 13:15:59,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231128129] [2025-02-06 13:15:59,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:59,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 13:15:59,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:59,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 13:15:59,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 13:15:59,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:15:59,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 121 transitions, 974 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:59,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:59,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:15:59,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:16:00,090 INFO L124 PetriNetUnfolderBase]: 2623/4641 cut-off events. [2025-02-06 13:16:00,090 INFO L125 PetriNetUnfolderBase]: For 117625/117625 co-relation queries the response was YES. [2025-02-06 13:16:00,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20868 conditions, 4641 events. 2623/4641 cut-off events. For 117625/117625 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26921 event pairs, 680 based on Foata normal form. 91/4730 useless extension candidates. Maximal degree in co-relation 19281. Up to 1736 conditions per place. [2025-02-06 13:16:00,116 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 229 selfloop transitions, 34 changer transitions 0/271 dead transitions. [2025-02-06 13:16:00,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 271 transitions, 2824 flow [2025-02-06 13:16:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 13:16:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 13:16:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2025-02-06 13:16:00,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2025-02-06 13:16:00,116 INFO L175 Difference]: Start difference. First operand has 168 places, 121 transitions, 974 flow. Second operand 9 states and 177 transitions. [2025-02-06 13:16:00,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 271 transitions, 2824 flow [2025-02-06 13:16:00,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 271 transitions, 2370 flow, removed 220 selfloop flow, removed 2 redundant places. [2025-02-06 13:16:00,338 INFO L231 Difference]: Finished difference. Result has 176 places, 127 transitions, 1093 flow [2025-02-06 13:16:00,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1093, PETRI_PLACES=176, PETRI_TRANSITIONS=127} [2025-02-06 13:16:00,339 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 140 predicate places. [2025-02-06 13:16:00,339 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 127 transitions, 1093 flow [2025-02-06 13:16:00,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:00,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:16:00,339 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:16:00,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 13:16:00,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 13:16:00,540 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:16:00,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:16:00,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1792248620, now seen corresponding path program 3 times [2025-02-06 13:16:00,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:16:00,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117787064] [2025-02-06 13:16:00,540 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:16:00,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:16:00,543 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 6 equivalence classes. [2025-02-06 13:16:00,550 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 13:16:00,551 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 13:16:00,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:00,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:16:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117787064] [2025-02-06 13:16:00,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117787064] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:16:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924394248] [2025-02-06 13:16:00,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:16:00,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:00,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:16:00,712 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) [2025-02-06 13:16:00,713 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 [2025-02-06 13:16:00,748 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 6 equivalence classes. [2025-02-06 13:16:00,759 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 13:16:00,759 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 13:16:00,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:00,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 13:16:00,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:16:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:00,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:16:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:01,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924394248] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:16:01,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:16:01,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2025-02-06 13:16:01,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433217182] [2025-02-06 13:16:01,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:16:01,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-06 13:16:01,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:16:01,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-06 13:16:01,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2025-02-06 13:16:01,167 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:16:01,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 127 transitions, 1093 flow. Second operand has 41 states, 41 states have (on average 11.292682926829269) internal successors, (463), 41 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:01,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:16:01,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:16:01,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:16:02,413 INFO L124 PetriNetUnfolderBase]: 3127/5509 cut-off events. [2025-02-06 13:16:02,413 INFO L125 PetriNetUnfolderBase]: For 105290/105290 co-relation queries the response was YES. [2025-02-06 13:16:02,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23814 conditions, 5509 events. 3127/5509 cut-off events. For 105290/105290 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 31348 event pairs, 540 based on Foata normal form. 336/5845 useless extension candidates. Maximal degree in co-relation 22952. Up to 2128 conditions per place. [2025-02-06 13:16:02,458 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 431 selfloop transitions, 52 changer transitions 0/491 dead transitions. [2025-02-06 13:16:02,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 491 transitions, 5182 flow [2025-02-06 13:16:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-06 13:16:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-06 13:16:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 456 transitions. [2025-02-06 13:16:02,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-02-06 13:16:02,459 INFO L175 Difference]: Start difference. First operand has 176 places, 127 transitions, 1093 flow. Second operand 27 states and 456 transitions. [2025-02-06 13:16:02,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 491 transitions, 5182 flow [2025-02-06 13:16:02,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 491 transitions, 4187 flow, removed 473 selfloop flow, removed 2 redundant places. [2025-02-06 13:16:02,616 INFO L231 Difference]: Finished difference. Result has 212 places, 139 transitions, 1276 flow [2025-02-06 13:16:02,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1276, PETRI_PLACES=212, PETRI_TRANSITIONS=139} [2025-02-06 13:16:02,616 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 176 predicate places. [2025-02-06 13:16:02,617 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 139 transitions, 1276 flow [2025-02-06 13:16:02,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.292682926829269) internal successors, (463), 41 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:02,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:16:02,617 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:16:02,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 13:16:02,817 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,SelfDestructingSolverStorable14 [2025-02-06 13:16:02,818 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:16:02,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:16:02,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1830934789, now seen corresponding path program 3 times [2025-02-06 13:16:02,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:16:02,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139595065] [2025-02-06 13:16:02,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:16:02,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:16:02,822 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 6 equivalence classes. [2025-02-06 13:16:02,826 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 13:16:02,826 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 13:16:02,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:02,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:16:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139595065] [2025-02-06 13:16:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139595065] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:16:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676164234] [2025-02-06 13:16:02,995 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:16:02,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:02,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:16:02,997 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) [2025-02-06 13:16:02,998 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 [2025-02-06 13:16:03,030 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 6 equivalence classes. [2025-02-06 13:16:03,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 13:16:03,040 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 13:16:03,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:03,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 13:16:03,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:16:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:03,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:16:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:03,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676164234] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:16:03,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:16:03,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2025-02-06 13:16:03,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105729899] [2025-02-06 13:16:03,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:16:03,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-06 13:16:03,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:16:03,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-06 13:16:03,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2025-02-06 13:16:03,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:16:03,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 139 transitions, 1276 flow. Second operand has 41 states, 41 states have (on average 11.292682926829269) internal successors, (463), 41 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:03,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:16:03,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:16:03,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:16:04,689 INFO L124 PetriNetUnfolderBase]: 3643/6378 cut-off events. [2025-02-06 13:16:04,689 INFO L125 PetriNetUnfolderBase]: For 52588/52588 co-relation queries the response was YES. [2025-02-06 13:16:04,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26721 conditions, 6378 events. 3643/6378 cut-off events. For 52588/52588 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 36381 event pairs, 812 based on Foata normal form. 348/6726 useless extension candidates. Maximal degree in co-relation 25884. Up to 2971 conditions per place. [2025-02-06 13:16:04,738 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 468 selfloop transitions, 52 changer transitions 0/528 dead transitions. [2025-02-06 13:16:04,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 528 transitions, 4638 flow [2025-02-06 13:16:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-06 13:16:04,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-06 13:16:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 481 transitions. [2025-02-06 13:16:04,739 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46881091617933723 [2025-02-06 13:16:04,740 INFO L175 Difference]: Start difference. First operand has 212 places, 139 transitions, 1276 flow. Second operand 27 states and 481 transitions. [2025-02-06 13:16:04,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 528 transitions, 4638 flow [2025-02-06 13:16:04,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 528 transitions, 4406 flow, removed 73 selfloop flow, removed 14 redundant places. [2025-02-06 13:16:04,887 INFO L231 Difference]: Finished difference. Result has 236 places, 151 transitions, 1348 flow [2025-02-06 13:16:04,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1348, PETRI_PLACES=236, PETRI_TRANSITIONS=151} [2025-02-06 13:16:04,887 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 200 predicate places. [2025-02-06 13:16:04,887 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 151 transitions, 1348 flow [2025-02-06 13:16:04,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.292682926829269) internal successors, (463), 41 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:04,888 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:16:04,888 INFO L206 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:16:04,894 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 [2025-02-06 13:16:05,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:05,088 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:16:05,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:16:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2032470836, now seen corresponding path program 4 times [2025-02-06 13:16:05,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:16:05,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832595843] [2025-02-06 13:16:05,089 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:16:05,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:16:05,093 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:16:05,098 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:16:05,098 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:16:05,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:05,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:16:05,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832595843] [2025-02-06 13:16:05,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832595843] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:16:05,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078756968] [2025-02-06 13:16:05,541 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:16:05,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:05,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:16:05,543 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) [2025-02-06 13:16:05,544 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 [2025-02-06 13:16:05,578 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:16:05,593 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:16:05,593 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:16:05,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:05,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-06 13:16:05,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:16:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:05,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:16:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:06,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078756968] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:16:06,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:16:06,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 27] total 77 [2025-02-06 13:16:06,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207864207] [2025-02-06 13:16:06,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:16:06,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-02-06 13:16:06,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:16:06,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-02-06 13:16:06,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2253, Invalid=3753, Unknown=0, NotChecked=0, Total=6006 [2025-02-06 13:16:06,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:16:06,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 151 transitions, 1348 flow. Second operand has 78 states, 78 states have (on average 11.166666666666666) internal successors, (871), 78 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:06,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:16:06,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:16:06,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:16:09,276 INFO L124 PetriNetUnfolderBase]: 4651/8056 cut-off events. [2025-02-06 13:16:09,276 INFO L125 PetriNetUnfolderBase]: For 205344/205344 co-relation queries the response was YES. [2025-02-06 13:16:09,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33935 conditions, 8056 events. 4651/8056 cut-off events. For 205344/205344 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 43644 event pairs, 864 based on Foata normal form. 672/8728 useless extension candidates. Maximal degree in co-relation 33086. Up to 2992 conditions per place. [2025-02-06 13:16:09,334 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 803 selfloop transitions, 76 changer transitions 0/887 dead transitions. [2025-02-06 13:16:09,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 887 transitions, 7659 flow [2025-02-06 13:16:09,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-02-06 13:16:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2025-02-06 13:16:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 852 transitions. [2025-02-06 13:16:09,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43962848297213625 [2025-02-06 13:16:09,335 INFO L175 Difference]: Start difference. First operand has 236 places, 151 transitions, 1348 flow. Second operand 51 states and 852 transitions. [2025-02-06 13:16:09,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 887 transitions, 7659 flow [2025-02-06 13:16:09,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 887 transitions, 7427 flow, removed 73 selfloop flow, removed 14 redundant places. [2025-02-06 13:16:09,575 INFO L231 Difference]: Finished difference. Result has 296 places, 175 transitions, 1660 flow [2025-02-06 13:16:09,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1660, PETRI_PLACES=296, PETRI_TRANSITIONS=175} [2025-02-06 13:16:09,576 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 260 predicate places. [2025-02-06 13:16:09,576 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 175 transitions, 1660 flow [2025-02-06 13:16:09,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 11.166666666666666) internal successors, (871), 78 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:09,576 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:16:09,576 INFO L206 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:16:09,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 13:16:09,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 13:16:09,780 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:16:09,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:16:09,781 INFO L85 PathProgramCache]: Analyzing trace with hash -730496069, now seen corresponding path program 4 times [2025-02-06 13:16:09,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:16:09,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703680746] [2025-02-06 13:16:09,781 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:16:09,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:16:09,785 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:16:09,790 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:16:09,790 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:16:09,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:10,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:16:10,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703680746] [2025-02-06 13:16:10,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703680746] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:16:10,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577324971] [2025-02-06 13:16:10,283 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:16:10,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:10,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:16:10,285 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) [2025-02-06 13:16:10,287 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 [2025-02-06 13:16:10,318 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:16:10,334 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:16:10,334 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:16:10,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:10,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-06 13:16:10,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:16:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:10,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:16:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:11,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577324971] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:16:11,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:16:11,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 77 [2025-02-06 13:16:11,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769904843] [2025-02-06 13:16:11,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:16:11,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-02-06 13:16:11,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:16:11,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-02-06 13:16:11,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2253, Invalid=3753, Unknown=0, NotChecked=0, Total=6006 [2025-02-06 13:16:11,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:16:11,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 175 transitions, 1660 flow. Second operand has 78 states, 78 states have (on average 11.179487179487179) internal successors, (872), 78 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:11,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:16:11,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:16:11,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:16:14,141 INFO L124 PetriNetUnfolderBase]: 5683/9786 cut-off events. [2025-02-06 13:16:14,142 INFO L125 PetriNetUnfolderBase]: For 237918/237918 co-relation queries the response was YES. [2025-02-06 13:16:14,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42585 conditions, 9786 events. 5683/9786 cut-off events. For 237918/237918 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 53499 event pairs, 1436 based on Foata normal form. 696/10482 useless extension candidates. Maximal degree in co-relation 41712. Up to 4651 conditions per place. [2025-02-06 13:16:14,218 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 876 selfloop transitions, 76 changer transitions 0/960 dead transitions. [2025-02-06 13:16:14,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 960 transitions, 8262 flow [2025-02-06 13:16:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-02-06 13:16:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2025-02-06 13:16:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 901 transitions. [2025-02-06 13:16:14,220 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2025-02-06 13:16:14,220 INFO L175 Difference]: Start difference. First operand has 296 places, 175 transitions, 1660 flow. Second operand 51 states and 901 transitions. [2025-02-06 13:16:14,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 960 transitions, 8262 flow [2025-02-06 13:16:14,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 960 transitions, 7862 flow, removed 145 selfloop flow, removed 26 redundant places. [2025-02-06 13:16:14,594 INFO L231 Difference]: Finished difference. Result has 344 places, 199 transitions, 1804 flow [2025-02-06 13:16:14,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1804, PETRI_PLACES=344, PETRI_TRANSITIONS=199} [2025-02-06 13:16:14,595 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 308 predicate places. [2025-02-06 13:16:14,595 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 199 transitions, 1804 flow [2025-02-06 13:16:14,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 11.179487179487179) internal successors, (872), 78 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:14,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:16:14,595 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:16:14,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-06 13:16:14,799 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,SelfDestructingSolverStorable17 [2025-02-06 13:16:14,799 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:16:14,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:16:14,799 INFO L85 PathProgramCache]: Analyzing trace with hash -432663661, now seen corresponding path program 1 times [2025-02-06 13:16:14,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:16:14,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165263370] [2025-02-06 13:16:14,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:16:14,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:16:14,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-06 13:16:14,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-06 13:16:14,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:16:14,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-02-06 13:16:14,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:16:14,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165263370] [2025-02-06 13:16:14,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165263370] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:16:14,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:16:14,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 13:16:14,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253790025] [2025-02-06 13:16:14,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:16:14,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:16:14,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:16:14,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:16:14,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:16:14,829 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-06 13:16:14,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 199 transitions, 1804 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:14,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:16:14,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-06 13:16:14,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:16:16,163 INFO L124 PetriNetUnfolderBase]: 5683/9795 cut-off events. [2025-02-06 13:16:16,163 INFO L125 PetriNetUnfolderBase]: For 100287/100287 co-relation queries the response was YES. [2025-02-06 13:16:16,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40702 conditions, 9795 events. 5683/9795 cut-off events. For 100287/100287 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 53411 event pairs, 4617 based on Foata normal form. 4/9795 useless extension candidates. Maximal degree in co-relation 39805. Up to 9518 conditions per place. [2025-02-06 13:16:16,249 INFO L140 encePairwiseOnDemand]: 36/38 looper letters, 139 selfloop transitions, 1 changer transitions 52/198 dead transitions. [2025-02-06 13:16:16,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 198 transitions, 2184 flow [2025-02-06 13:16:16,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:16:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:16:16,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2025-02-06 13:16:16,251 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2025-02-06 13:16:16,251 INFO L175 Difference]: Start difference. First operand has 344 places, 199 transitions, 1804 flow. Second operand 3 states and 49 transitions. [2025-02-06 13:16:16,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 198 transitions, 2184 flow [2025-02-06 13:16:16,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 198 transitions, 1790 flow, removed 145 selfloop flow, removed 26 redundant places. [2025-02-06 13:16:16,765 INFO L231 Difference]: Finished difference. Result has 319 places, 146 transitions, 875 flow [2025-02-06 13:16:16,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=875, PETRI_PLACES=319, PETRI_TRANSITIONS=146} [2025-02-06 13:16:16,766 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 283 predicate places. [2025-02-06 13:16:16,766 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 146 transitions, 875 flow [2025-02-06 13:16:16,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:16,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:16:16,766 INFO L206 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:16:16,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-06 13:16:16,766 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:16:16,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:16:16,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1825291966, now seen corresponding path program 5 times [2025-02-06 13:16:16,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:16:16,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469945819] [2025-02-06 13:16:16,766 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:16:16,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:16:16,770 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 59 statements into 24 equivalence classes. [2025-02-06 13:16:16,781 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 59 of 59 statements. [2025-02-06 13:16:16,782 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-06 13:16:16,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:17,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:16:17,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469945819] [2025-02-06 13:16:17,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469945819] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:16:17,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146087965] [2025-02-06 13:16:17,875 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:16:17,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:17,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:16:17,877 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) [2025-02-06 13:16:17,878 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 [2025-02-06 13:16:17,913 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 59 statements into 24 equivalence classes. [2025-02-06 13:16:17,933 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 59 of 59 statements. [2025-02-06 13:16:17,933 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-06 13:16:17,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:17,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-02-06 13:16:17,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:16:18,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:18,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:16:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:21,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146087965] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:16:21,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:16:21,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2025-02-06 13:16:21,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340638096] [2025-02-06 13:16:21,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:16:21,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2025-02-06 13:16:21,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:16:21,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2025-02-06 13:16:21,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9087, Invalid=12965, Unknown=0, NotChecked=0, Total=22052 [2025-02-06 13:16:21,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:16:21,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 146 transitions, 875 flow. Second operand has 149 states, 149 states have (on average 11.080536912751677) internal successors, (1651), 149 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:21,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:16:21,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:16:21,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:16:28,897 INFO L124 PetriNetUnfolderBase]: 6428/10982 cut-off events. [2025-02-06 13:16:28,897 INFO L125 PetriNetUnfolderBase]: For 1498088/1498088 co-relation queries the response was YES. [2025-02-06 13:16:28,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43832 conditions, 10982 events. 6428/10982 cut-off events. For 1498088/1498088 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 53335 event pairs, 1446 based on Foata normal form. 1344/12326 useless extension candidates. Maximal degree in co-relation 43689. Up to 3684 conditions per place. [2025-02-06 13:16:29,006 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 1503 selfloop transitions, 100 changer transitions 15/1624 dead transitions. [2025-02-06 13:16:29,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 1624 transitions, 13260 flow [2025-02-06 13:16:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-02-06 13:16:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2025-02-06 13:16:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1639 transitions. [2025-02-06 13:16:29,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2025-02-06 13:16:29,009 INFO L175 Difference]: Start difference. First operand has 319 places, 146 transitions, 875 flow. Second operand 99 states and 1639 transitions. [2025-02-06 13:16:29,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 1624 transitions, 13260 flow [2025-02-06 13:16:29,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 1624 transitions, 12763 flow, removed 248 selfloop flow, removed 5 redundant places. [2025-02-06 13:16:29,387 INFO L231 Difference]: Finished difference. Result has 434 places, 194 transitions, 1728 flow [2025-02-06 13:16:29,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=1728, PETRI_PLACES=434, PETRI_TRANSITIONS=194} [2025-02-06 13:16:29,388 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 398 predicate places. [2025-02-06 13:16:29,388 INFO L471 AbstractCegarLoop]: Abstraction has has 434 places, 194 transitions, 1728 flow [2025-02-06 13:16:29,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 11.080536912751677) internal successors, (1651), 149 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:29,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:16:29,388 INFO L206 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:16:29,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 13:16:29,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:29,589 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:16:29,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:16:29,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1868243653, now seen corresponding path program 5 times [2025-02-06 13:16:29,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:16:29,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047887956] [2025-02-06 13:16:29,590 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:16:29,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:16:29,595 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 59 statements into 24 equivalence classes. [2025-02-06 13:16:29,614 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 59 of 59 statements. [2025-02-06 13:16:29,614 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-06 13:16:29,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:30,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:16:30,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047887956] [2025-02-06 13:16:30,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047887956] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:16:30,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755925092] [2025-02-06 13:16:30,781 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:16:30,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:30,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:16:30,783 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) [2025-02-06 13:16:30,783 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 [2025-02-06 13:16:30,817 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 59 statements into 24 equivalence classes. [2025-02-06 13:16:30,838 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 59 of 59 statements. [2025-02-06 13:16:30,838 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-06 13:16:30,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:30,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-02-06 13:16:30,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:16:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:31,791 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:16:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:34,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755925092] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:16:34,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:16:34,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2025-02-06 13:16:34,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366017706] [2025-02-06 13:16:34,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:16:34,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2025-02-06 13:16:34,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:16:34,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2025-02-06 13:16:34,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9087, Invalid=12965, Unknown=0, NotChecked=0, Total=22052 [2025-02-06 13:16:34,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:16:34,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 194 transitions, 1728 flow. Second operand has 149 states, 149 states have (on average 11.080536912751677) internal successors, (1651), 149 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:34,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:16:34,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:16:34,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:16:43,781 INFO L124 PetriNetUnfolderBase]: 8492/14440 cut-off events. [2025-02-06 13:16:43,781 INFO L125 PetriNetUnfolderBase]: For 1636538/1636538 co-relation queries the response was YES. [2025-02-06 13:16:43,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62337 conditions, 14440 events. 8492/14440 cut-off events. For 1636538/1636538 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 73148 event pairs, 2618 based on Foata normal form. 1392/15832 useless extension candidates. Maximal degree in co-relation 62150. Up to 6946 conditions per place. [2025-02-06 13:16:43,953 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 1649 selfloop transitions, 100 changer transitions 14/1769 dead transitions. [2025-02-06 13:16:43,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 1769 transitions, 14222 flow [2025-02-06 13:16:43,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-02-06 13:16:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2025-02-06 13:16:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1736 transitions. [2025-02-06 13:16:43,959 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4614566719829878 [2025-02-06 13:16:43,959 INFO L175 Difference]: Start difference. First operand has 434 places, 194 transitions, 1728 flow. Second operand 99 states and 1736 transitions. [2025-02-06 13:16:43,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 1769 transitions, 14222 flow [2025-02-06 13:16:45,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1769 transitions, 13630 flow, removed 241 selfloop flow, removed 50 redundant places. [2025-02-06 13:16:45,137 INFO L231 Difference]: Finished difference. Result has 530 places, 242 transitions, 2016 flow [2025-02-06 13:16:45,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=2016, PETRI_PLACES=530, PETRI_TRANSITIONS=242} [2025-02-06 13:16:45,138 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 494 predicate places. [2025-02-06 13:16:45,138 INFO L471 AbstractCegarLoop]: Abstraction has has 530 places, 242 transitions, 2016 flow [2025-02-06 13:16:45,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 11.080536912751677) internal successors, (1651), 149 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:45,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:16:45,138 INFO L206 CegarLoopForPetriNet]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:16:45,144 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 [2025-02-06 13:16:45,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:45,343 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:16:45,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:16:45,344 INFO L85 PathProgramCache]: Analyzing trace with hash 482311220, now seen corresponding path program 6 times [2025-02-06 13:16:45,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:16:45,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711664376] [2025-02-06 13:16:45,344 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:16:45,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:16:45,352 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 107 statements into 48 equivalence classes. [2025-02-06 13:16:45,376 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 107 of 107 statements. [2025-02-06 13:16:45,376 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-02-06 13:16:45,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:49,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:16:49,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711664376] [2025-02-06 13:16:49,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711664376] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:16:49,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489668305] [2025-02-06 13:16:49,011 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:16:49,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:49,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:16:49,014 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) [2025-02-06 13:16:49,015 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 [2025-02-06 13:16:49,059 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 107 statements into 48 equivalence classes. [2025-02-06 13:16:49,108 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 107 of 107 statements. [2025-02-06 13:16:49,108 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-02-06 13:16:49,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:49,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 100 conjuncts are in the unsatisfiable core [2025-02-06 13:16:49,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:16:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:52,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:16:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:55,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489668305] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:16:55,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:16:55,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 203 [2025-02-06 13:16:55,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727485933] [2025-02-06 13:16:55,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:16:55,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2025-02-06 13:16:55,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:16:55,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2025-02-06 13:16:55,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15147, Invalid=26265, Unknown=0, NotChecked=0, Total=41412 [2025-02-06 13:16:55,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-02-06 13:16:55,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 242 transitions, 2016 flow. Second operand has 204 states, 204 states have (on average 11.063725490196079) internal successors, (2257), 204 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:55,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:16:55,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-02-06 13:16:55,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:17:08,017 INFO L124 PetriNetUnfolderBase]: 8786/14928 cut-off events. [2025-02-06 13:17:08,017 INFO L125 PetriNetUnfolderBase]: For 1156857/1156857 co-relation queries the response was YES. [2025-02-06 13:17:08,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62046 conditions, 14928 events. 8786/14928 cut-off events. For 1156857/1156857 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 75490 event pairs, 2742 based on Foata normal form. 196/15124 useless extension candidates. Maximal degree in co-relation 61811. Up to 7140 conditions per place. [2025-02-06 13:17:08,171 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 1656 selfloop transitions, 107 changer transitions 15/1784 dead transitions. [2025-02-06 13:17:08,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 1784 transitions, 14443 flow [2025-02-06 13:17:08,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2025-02-06 13:17:08,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2025-02-06 13:17:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1710 transitions. [2025-02-06 13:17:08,173 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42452830188679247 [2025-02-06 13:17:08,173 INFO L175 Difference]: Start difference. First operand has 530 places, 242 transitions, 2016 flow. Second operand 106 states and 1710 transitions. [2025-02-06 13:17:08,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 1784 transitions, 14443 flow [2025-02-06 13:17:09,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 1784 transitions, 13851 flow, removed 241 selfloop flow, removed 50 redundant places. [2025-02-06 13:17:09,647 INFO L231 Difference]: Finished difference. Result has 592 places, 249 transitions, 1744 flow [2025-02-06 13:17:09,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=1744, PETRI_PLACES=592, PETRI_TRANSITIONS=249} [2025-02-06 13:17:09,647 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 556 predicate places. [2025-02-06 13:17:09,647 INFO L471 AbstractCegarLoop]: Abstraction has has 592 places, 249 transitions, 1744 flow [2025-02-06 13:17:09,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 11.063725490196079) internal successors, (2257), 204 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:17:09,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:17:09,648 INFO L206 CegarLoopForPetriNet]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:17:09,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 13:17:09,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:17:09,849 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 13:17:09,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:17:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash -722893563, now seen corresponding path program 6 times [2025-02-06 13:17:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:17:09,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420835339] [2025-02-06 13:17:09,850 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:17:09,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:17:09,854 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 107 statements into 48 equivalence classes. [2025-02-06 13:17:09,869 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 107 of 107 statements. [2025-02-06 13:17:09,870 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-02-06 13:17:09,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:17:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:17:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:17:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420835339] [2025-02-06 13:17:13,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420835339] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:17:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927318335] [2025-02-06 13:17:13,000 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:17:13,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:17:13,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:17:13,002 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) [2025-02-06 13:17:13,002 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 [2025-02-06 13:17:13,041 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 107 statements into 48 equivalence classes. [2025-02-06 13:17:13,079 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 107 of 107 statements. [2025-02-06 13:17:13,079 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-02-06 13:17:13,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:17:13,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 100 conjuncts are in the unsatisfiable core [2025-02-06 13:17:13,083 INFO L279 TraceCheckSpWp]: Computing forward predicates...