./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/triangular-longer-2.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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:11:23,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:11:23,343 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:11:23,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:11:23,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:11:23,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:11:23,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:11:23,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:11:23,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:11:23,363 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:11:23,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:11:23,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:11:23,363 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:11:23,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:11:23,363 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:11:23,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:11:23,363 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:11:23,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:11:23,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:11:23,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:11:23,364 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:11:23,364 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:11:23,364 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:11:23,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:11:23,364 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:11:23,364 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:11:23,364 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:11:23,364 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:11:23,365 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:11:23,365 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:11:23,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:11:23,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:11:23,365 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:11:23,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:23,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:11:23,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:11:23,365 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:11:23,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:11:23,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:11:23,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:11:23,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:11:23,366 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:11:23,366 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 -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2025-02-08 08:11:23,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:11:23,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:11:23,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:11:23,563 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:11:23,564 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:11:23,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-2.i [2025-02-08 08:11:24,785 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ae997afd1/4158729161704eb7a7020cf578514cfc/FLAGeae28097a [2025-02-08 08:11:25,115 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:11:25,115 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-2.i [2025-02-08 08:11:25,143 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ae997afd1/4158729161704eb7a7020cf578514cfc/FLAGeae28097a [2025-02-08 08:11:25,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ae997afd1/4158729161704eb7a7020cf578514cfc [2025-02-08 08:11:25,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:11:25,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:11:25,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:25,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:11:25,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:11:25,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b40629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25, skipping insertion in model container [2025-02-08 08:11:25,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,377 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:11:25,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:25,652 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:11:25,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:25,696 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:11:25,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25 WrapperNode [2025-02-08 08:11:25,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:25,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:25,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:11:25,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:11:25,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,717 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-02-08 08:11:25,717 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:25,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:11:25,718 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:11:25,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:11:25,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,724 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,730 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 08:11:25,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,731 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,733 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:11:25,736 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:11:25,736 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:11:25,737 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:11:25,737 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (1/1) ... [2025-02-08 08:11:25,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:25,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:25,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:11:25,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:11:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-08 08:11:25,781 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-08 08:11:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-08 08:11:25,781 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-08 08:11:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:11:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:11:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:11:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:11:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:11:25,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:11:25,783 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:11:25,879 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:11:25,881 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:11:25,999 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:11:25,999 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:11:26,062 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:11:26,062 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:11:26,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:26 BoogieIcfgContainer [2025-02-08 08:11:26,063 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:11:26,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:11:26,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:11:26,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:11:26,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:11:25" (1/3) ... [2025-02-08 08:11:26,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a634170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:26, skipping insertion in model container [2025-02-08 08:11:26,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:25" (2/3) ... [2025-02-08 08:11:26,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a634170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:26, skipping insertion in model container [2025-02-08 08:11:26,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:26" (3/3) ... [2025-02-08 08:11:26,069 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2025-02-08 08:11:26,078 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:11:26,080 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longer-2.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-08 08:11:26,080 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:11:26,110 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 08:11:26,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2025-02-08 08:11:26,147 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-02-08 08:11:26,149 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:11:26,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-08 08:11:26,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2025-02-08 08:11:26,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2025-02-08 08:11:26,158 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:11:26,165 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;@78cca607, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:11:26,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 08:11:26,172 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:11:26,172 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-02-08 08:11:26,172 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:11:26,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:26,173 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:26,173 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:26,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:26,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1190746502, now seen corresponding path program 1 times [2025-02-08 08:11:26,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:26,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012465267] [2025-02-08 08:11:26,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:26,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:26,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:11:26,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:11:26,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:26,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:26,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:26,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012465267] [2025-02-08 08:11:26,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012465267] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:26,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:26,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:11:26,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832875141] [2025-02-08 08:11:26,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:26,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:11:26,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:26,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:11:26,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:11:26,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:26,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:26,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:26,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:26,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:26,499 INFO L124 PetriNetUnfolderBase]: 185/359 cut-off events. [2025-02-08 08:11:26,499 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:11:26,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 359 events. 185/359 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1574 event pairs, 135 based on Foata normal form. 32/386 useless extension candidates. Maximal degree in co-relation 653. Up to 290 conditions per place. [2025-02-08 08:11:26,503 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 15 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2025-02-08 08:11:26,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 86 flow [2025-02-08 08:11:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:11:26,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:11:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-02-08 08:11:26,510 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-02-08 08:11:26,511 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 44 transitions. [2025-02-08 08:11:26,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 86 flow [2025-02-08 08:11:26,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:11:26,515 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2025-02-08 08:11:26,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2025-02-08 08:11:26,519 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2025-02-08 08:11:26,519 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2025-02-08 08:11:26,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:26,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:26,520 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:26,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:11:26,520 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:26,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1190746953, now seen corresponding path program 1 times [2025-02-08 08:11:26,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:26,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273192214] [2025-02-08 08:11:26,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:26,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:26,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:11:26,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:11:26,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:26,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:26,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:26,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273192214] [2025-02-08 08:11:26,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273192214] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:26,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:26,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:11:26,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898985663] [2025-02-08 08:11:26,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:26,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:11:26,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:26,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:11:26,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:11:26,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:26,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:26,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:26,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:26,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:26,835 INFO L124 PetriNetUnfolderBase]: 328/593 cut-off events. [2025-02-08 08:11:26,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:11:26,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 593 events. 328/593 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2607 event pairs, 45 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 1120. Up to 243 conditions per place. [2025-02-08 08:11:26,839 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 7 changer transitions 29/69 dead transitions. [2025-02-08 08:11:26,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 69 transitions, 274 flow [2025-02-08 08:11:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:11:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:11:26,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2025-02-08 08:11:26,841 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5646551724137931 [2025-02-08 08:11:26,841 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 8 states and 131 transitions. [2025-02-08 08:11:26,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 69 transitions, 274 flow [2025-02-08 08:11:26,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 69 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:11:26,843 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 100 flow [2025-02-08 08:11:26,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2025-02-08 08:11:26,844 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2025-02-08 08:11:26,844 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 100 flow [2025-02-08 08:11:26,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:26,844 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:26,844 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:26,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:11:26,844 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:26,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1561247511, now seen corresponding path program 1 times [2025-02-08 08:11:26,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:26,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228993725] [2025-02-08 08:11:26,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:26,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:26,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:11:26,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:11:26,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:26,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:26,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:26,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228993725] [2025-02-08 08:11:26,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228993725] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:26,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:26,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:11:26,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724812650] [2025-02-08 08:11:26,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:26,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:11:26,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:26,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:11:26,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:11:26,958 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:26,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:26,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:26,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:26,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:27,097 INFO L124 PetriNetUnfolderBase]: 247/454 cut-off events. [2025-02-08 08:11:27,098 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2025-02-08 08:11:27,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 454 events. 247/454 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1843 event pairs, 63 based on Foata normal form. 18/466 useless extension candidates. Maximal degree in co-relation 1170. Up to 190 conditions per place. [2025-02-08 08:11:27,101 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 8 changer transitions 15/54 dead transitions. [2025-02-08 08:11:27,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 294 flow [2025-02-08 08:11:27,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:11:27,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 08:11:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2025-02-08 08:11:27,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2025-02-08 08:11:27,102 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 100 flow. Second operand 6 states and 94 transitions. [2025-02-08 08:11:27,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 294 flow [2025-02-08 08:11:27,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 290 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-08 08:11:27,105 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 144 flow [2025-02-08 08:11:27,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2025-02-08 08:11:27,106 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2025-02-08 08:11:27,106 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 144 flow [2025-02-08 08:11:27,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:27,106 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:27,106 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:27,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:11:27,106 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:27,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:27,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1318103228, now seen corresponding path program 1 times [2025-02-08 08:11:27,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:27,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476962297] [2025-02-08 08:11:27,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:27,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:27,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:11:27,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:11:27,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:27,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:27,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:27,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476962297] [2025-02-08 08:11:27,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476962297] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:27,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:27,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:11:27,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763233650] [2025-02-08 08:11:27,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:27,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:11:27,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:27,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:11:27,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:11:27,192 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:27,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:27,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:27,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:27,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:27,349 INFO L124 PetriNetUnfolderBase]: 391/725 cut-off events. [2025-02-08 08:11:27,349 INFO L125 PetriNetUnfolderBase]: For 1142/1142 co-relation queries the response was YES. [2025-02-08 08:11:27,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2131 conditions, 725 events. 391/725 cut-off events. For 1142/1142 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3193 event pairs, 95 based on Foata normal form. 27/748 useless extension candidates. Maximal degree in co-relation 2114. Up to 264 conditions per place. [2025-02-08 08:11:27,353 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 47 selfloop transitions, 11 changer transitions 20/82 dead transitions. [2025-02-08 08:11:27,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 82 transitions, 518 flow [2025-02-08 08:11:27,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:11:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 08:11:27,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-02-08 08:11:27,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-02-08 08:11:27,354 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 144 flow. Second operand 9 states and 144 transitions. [2025-02-08 08:11:27,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 82 transitions, 518 flow [2025-02-08 08:11:27,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 82 transitions, 476 flow, removed 20 selfloop flow, removed 3 redundant places. [2025-02-08 08:11:27,358 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 240 flow [2025-02-08 08:11:27,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=240, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2025-02-08 08:11:27,359 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2025-02-08 08:11:27,359 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 240 flow [2025-02-08 08:11:27,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:27,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:27,359 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:27,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:11:27,360 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:27,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:27,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1201091516, now seen corresponding path program 2 times [2025-02-08 08:11:27,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:27,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666251092] [2025-02-08 08:11:27,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:27,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:27,365 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:11:27,368 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:11:27,368 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:11:27,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:27,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:27,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666251092] [2025-02-08 08:11:27,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666251092] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:27,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:27,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:11:27,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390102464] [2025-02-08 08:11:27,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:27,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:11:27,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:27,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:11:27,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:11:27,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:27,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:27,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:27,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:27,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:27,604 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2025-02-08 08:11:27,604 INFO L125 PetriNetUnfolderBase]: For 1875/1875 co-relation queries the response was YES. [2025-02-08 08:11:27,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 611 events. 328/611 cut-off events. For 1875/1875 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2570 event pairs, 95 based on Foata normal form. 45/652 useless extension candidates. Maximal degree in co-relation 2027. Up to 234 conditions per place. [2025-02-08 08:11:27,607 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 11 changer transitions 28/81 dead transitions. [2025-02-08 08:11:27,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 612 flow [2025-02-08 08:11:27,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:11:27,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:11:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2025-02-08 08:11:27,608 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2025-02-08 08:11:27,608 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 240 flow. Second operand 8 states and 127 transitions. [2025-02-08 08:11:27,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 612 flow [2025-02-08 08:11:27,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 568 flow, removed 22 selfloop flow, removed 2 redundant places. [2025-02-08 08:11:27,614 INFO L231 Difference]: Finished difference. Result has 58 places, 37 transitions, 271 flow [2025-02-08 08:11:27,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=271, PETRI_PLACES=58, PETRI_TRANSITIONS=37} [2025-02-08 08:11:27,614 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2025-02-08 08:11:27,614 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 37 transitions, 271 flow [2025-02-08 08:11:27,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:27,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:27,615 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:27,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 08:11:27,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:27,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:27,615 INFO L85 PathProgramCache]: Analyzing trace with hash 661783278, now seen corresponding path program 1 times [2025-02-08 08:11:27,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:27,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127753633] [2025-02-08 08:11:27,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:27,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:27,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:11:27,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:11:27,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:27,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:27,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:27,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127753633] [2025-02-08 08:11:27,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127753633] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:27,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:27,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:11:27,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144485479] [2025-02-08 08:11:27,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:27,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:11:27,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:27,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:11:27,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:11:27,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:27,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 37 transitions, 271 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:27,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:27,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:27,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:27,884 INFO L124 PetriNetUnfolderBase]: 364/670 cut-off events. [2025-02-08 08:11:27,884 INFO L125 PetriNetUnfolderBase]: For 2964/2964 co-relation queries the response was YES. [2025-02-08 08:11:27,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2425 conditions, 670 events. 364/670 cut-off events. For 2964/2964 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2802 event pairs, 65 based on Foata normal form. 27/691 useless extension candidates. Maximal degree in co-relation 2397. Up to 148 conditions per place. [2025-02-08 08:11:27,887 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 40 selfloop transitions, 18 changer transitions 28/90 dead transitions. [2025-02-08 08:11:27,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 90 transitions, 715 flow [2025-02-08 08:11:27,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:11:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 08:11:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2025-02-08 08:11:27,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-02-08 08:11:27,889 INFO L175 Difference]: Start difference. First operand has 58 places, 37 transitions, 271 flow. Second operand 10 states and 155 transitions. [2025-02-08 08:11:27,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 90 transitions, 715 flow [2025-02-08 08:11:27,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 90 transitions, 646 flow, removed 25 selfloop flow, removed 7 redundant places. [2025-02-08 08:11:27,894 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 350 flow [2025-02-08 08:11:27,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2025-02-08 08:11:27,894 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2025-02-08 08:11:27,895 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 350 flow [2025-02-08 08:11:27,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:27,895 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:27,895 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:27,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 08:11:27,895 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:27,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:27,896 INFO L85 PathProgramCache]: Analyzing trace with hash 116634644, now seen corresponding path program 2 times [2025-02-08 08:11:27,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:27,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287062045] [2025-02-08 08:11:27,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:27,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:27,901 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:11:27,903 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:11:27,903 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:11:27,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:27,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:27,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287062045] [2025-02-08 08:11:27,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287062045] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:27,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:27,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:11:27,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752004202] [2025-02-08 08:11:27,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:27,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:11:27,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:27,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:11:27,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:11:27,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:27,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 350 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:27,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:27,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:27,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:28,194 INFO L124 PetriNetUnfolderBase]: 391/719 cut-off events. [2025-02-08 08:11:28,194 INFO L125 PetriNetUnfolderBase]: For 3901/3901 co-relation queries the response was YES. [2025-02-08 08:11:28,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2801 conditions, 719 events. 391/719 cut-off events. For 3901/3901 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3108 event pairs, 104 based on Foata normal form. 18/733 useless extension candidates. Maximal degree in co-relation 2771. Up to 327 conditions per place. [2025-02-08 08:11:28,218 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 49 selfloop transitions, 16 changer transitions 25/94 dead transitions. [2025-02-08 08:11:28,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 94 transitions, 800 flow [2025-02-08 08:11:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:11:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 08:11:28,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-02-08 08:11:28,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-02-08 08:11:28,219 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 350 flow. Second operand 11 states and 168 transitions. [2025-02-08 08:11:28,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 94 transitions, 800 flow [2025-02-08 08:11:28,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 94 transitions, 720 flow, removed 32 selfloop flow, removed 6 redundant places. [2025-02-08 08:11:28,227 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 381 flow [2025-02-08 08:11:28,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=381, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2025-02-08 08:11:28,228 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2025-02-08 08:11:28,228 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 381 flow [2025-02-08 08:11:28,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:28,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:28,228 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:28,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 08:11:28,228 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:28,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:28,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1782115872, now seen corresponding path program 1 times [2025-02-08 08:11:28,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:28,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773995469] [2025-02-08 08:11:28,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:28,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:28,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:11:28,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:11:28,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:28,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:28,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:28,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773995469] [2025-02-08 08:11:28,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773995469] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:28,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307903618] [2025-02-08 08:11:28,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:28,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:28,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:28,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:28,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:11:28,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:11:28,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:11:28,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:28,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:28,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 08:11:28,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:28,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:28,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307903618] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:28,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:28,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-08 08:11:28,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985136916] [2025-02-08 08:11:28,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:28,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 08:11:28,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:28,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 08:11:28,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-02-08 08:11:28,586 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:28,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:28,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:28,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:28,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:29,035 INFO L124 PetriNetUnfolderBase]: 625/1129 cut-off events. [2025-02-08 08:11:29,037 INFO L125 PetriNetUnfolderBase]: For 7743/7743 co-relation queries the response was YES. [2025-02-08 08:11:29,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4595 conditions, 1129 events. 625/1129 cut-off events. For 7743/7743 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4774 event pairs, 59 based on Foata normal form. 45/1168 useless extension candidates. Maximal degree in co-relation 4564. Up to 182 conditions per place. [2025-02-08 08:11:29,042 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 65 selfloop transitions, 33 changer transitions 56/158 dead transitions. [2025-02-08 08:11:29,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 158 transitions, 1433 flow [2025-02-08 08:11:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 08:11:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-08 08:11:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 293 transitions. [2025-02-08 08:11:29,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5317604355716878 [2025-02-08 08:11:29,046 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 381 flow. Second operand 19 states and 293 transitions. [2025-02-08 08:11:29,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 158 transitions, 1433 flow [2025-02-08 08:11:29,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 158 transitions, 1356 flow, removed 28 selfloop flow, removed 7 redundant places. [2025-02-08 08:11:29,057 INFO L231 Difference]: Finished difference. Result has 87 places, 60 transitions, 698 flow [2025-02-08 08:11:29,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=698, PETRI_PLACES=87, PETRI_TRANSITIONS=60} [2025-02-08 08:11:29,059 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2025-02-08 08:11:29,060 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 60 transitions, 698 flow [2025-02-08 08:11:29,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:29,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:29,060 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:29,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 08:11:29,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:29,261 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:29,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2101291399, now seen corresponding path program 1 times [2025-02-08 08:11:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:29,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267994673] [2025-02-08 08:11:29,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:29,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 08:11:29,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 08:11:29,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:29,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:29,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:29,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267994673] [2025-02-08 08:11:29,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267994673] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:29,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337003114] [2025-02-08 08:11:29,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:29,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:29,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:29,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:29,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 08:11:29,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 08:11:29,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 08:11:29,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:29,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:29,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 08:11:29,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:29,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:29,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337003114] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:29,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:29,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-02-08 08:11:29,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579871315] [2025-02-08 08:11:29,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:29,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 08:11:29,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:29,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 08:11:29,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-02-08 08:11:29,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:29,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 60 transitions, 698 flow. Second operand has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:29,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:29,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:29,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:30,262 INFO L124 PetriNetUnfolderBase]: 823/1541 cut-off events. [2025-02-08 08:11:30,262 INFO L125 PetriNetUnfolderBase]: For 19489/19489 co-relation queries the response was YES. [2025-02-08 08:11:30,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 1541 events. 823/1541 cut-off events. For 19489/19489 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6707 event pairs, 203 based on Foata normal form. 81/1618 useless extension candidates. Maximal degree in co-relation 7224. Up to 720 conditions per place. [2025-02-08 08:11:30,270 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 92 selfloop transitions, 25 changer transitions 89/210 dead transitions. [2025-02-08 08:11:30,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 210 transitions, 2368 flow [2025-02-08 08:11:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-08 08:11:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-08 08:11:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 376 transitions. [2025-02-08 08:11:30,272 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5186206896551724 [2025-02-08 08:11:30,272 INFO L175 Difference]: Start difference. First operand has 87 places, 60 transitions, 698 flow. Second operand 25 states and 376 transitions. [2025-02-08 08:11:30,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 210 transitions, 2368 flow [2025-02-08 08:11:30,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 210 transitions, 1865 flow, removed 237 selfloop flow, removed 10 redundant places. [2025-02-08 08:11:30,289 INFO L231 Difference]: Finished difference. Result has 115 places, 74 transitions, 785 flow [2025-02-08 08:11:30,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=785, PETRI_PLACES=115, PETRI_TRANSITIONS=74} [2025-02-08 08:11:30,290 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2025-02-08 08:11:30,290 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 74 transitions, 785 flow [2025-02-08 08:11:30,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:30,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:30,290 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:30,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 08:11:30,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:30,494 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:30,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:30,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2001688053, now seen corresponding path program 2 times [2025-02-08 08:11:30,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:30,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498300568] [2025-02-08 08:11:30,495 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:30,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:30,499 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-08 08:11:30,503 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 08:11:30,503 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:11:30,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:30,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:30,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498300568] [2025-02-08 08:11:30,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498300568] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:30,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714455375] [2025-02-08 08:11:30,631 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:30,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:30,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:30,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:30,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 08:11:30,672 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-08 08:11:30,684 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 08:11:30,684 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:11:30,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:30,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 08:11:30,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:30,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:30,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714455375] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:30,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:30,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-02-08 08:11:30,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284008551] [2025-02-08 08:11:30,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:30,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 08:11:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:30,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 08:11:30,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2025-02-08 08:11:30,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:30,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 74 transitions, 785 flow. Second operand has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:30,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:30,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:30,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:31,688 INFO L124 PetriNetUnfolderBase]: 1435/2726 cut-off events. [2025-02-08 08:11:31,688 INFO L125 PetriNetUnfolderBase]: For 66366/66366 co-relation queries the response was YES. [2025-02-08 08:11:31,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14602 conditions, 2726 events. 1435/2726 cut-off events. For 66366/66366 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 14672 event pairs, 138 based on Foata normal form. 81/2803 useless extension candidates. Maximal degree in co-relation 14550. Up to 484 conditions per place. [2025-02-08 08:11:31,708 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 127 selfloop transitions, 80 changer transitions 91/302 dead transitions. [2025-02-08 08:11:31,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 302 transitions, 3861 flow [2025-02-08 08:11:31,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-08 08:11:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-02-08 08:11:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 489 transitions. [2025-02-08 08:11:31,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5269396551724138 [2025-02-08 08:11:31,713 INFO L175 Difference]: Start difference. First operand has 115 places, 74 transitions, 785 flow. Second operand 32 states and 489 transitions. [2025-02-08 08:11:31,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 302 transitions, 3861 flow [2025-02-08 08:11:31,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 302 transitions, 3247 flow, removed 299 selfloop flow, removed 13 redundant places. [2025-02-08 08:11:31,762 INFO L231 Difference]: Finished difference. Result has 147 places, 120 transitions, 1594 flow [2025-02-08 08:11:31,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1594, PETRI_PLACES=147, PETRI_TRANSITIONS=120} [2025-02-08 08:11:31,763 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2025-02-08 08:11:31,764 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 120 transitions, 1594 flow [2025-02-08 08:11:31,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:31,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:31,764 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:31,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 08:11:31,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:31,965 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:31,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:31,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1775698249, now seen corresponding path program 3 times [2025-02-08 08:11:31,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:31,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281645525] [2025-02-08 08:11:31,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:11:31,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:31,972 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-02-08 08:11:31,981 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 08:11:31,981 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-08 08:11:31,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:32,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:32,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281645525] [2025-02-08 08:11:32,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281645525] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:32,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477032584] [2025-02-08 08:11:32,138 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:11:32,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:32,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:32,140 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:32,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 08:11:32,172 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-02-08 08:11:32,183 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 08:11:32,183 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-08 08:11:32,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:32,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 08:11:32,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:32,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:32,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477032584] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:32,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:32,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-02-08 08:11:32,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925526740] [2025-02-08 08:11:32,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:32,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 08:11:32,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:32,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 08:11:32,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2025-02-08 08:11:32,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:32,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 120 transitions, 1594 flow. Second operand has 18 states, 18 states have (on average 10.277777777777779) internal successors, (185), 18 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:32,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:32,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:32,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:33,560 INFO L124 PetriNetUnfolderBase]: 1822/3435 cut-off events. [2025-02-08 08:11:33,561 INFO L125 PetriNetUnfolderBase]: For 152114/152114 co-relation queries the response was YES. [2025-02-08 08:11:33,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21739 conditions, 3435 events. 1822/3435 cut-off events. For 152114/152114 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 19323 event pairs, 58 based on Foata normal form. 117/3548 useless extension candidates. Maximal degree in co-relation 21672. Up to 509 conditions per place. [2025-02-08 08:11:33,594 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 124 selfloop transitions, 121 changer transitions 115/364 dead transitions. [2025-02-08 08:11:33,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 364 transitions, 5825 flow [2025-02-08 08:11:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-02-08 08:11:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2025-02-08 08:11:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 551 transitions. [2025-02-08 08:11:33,600 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2025-02-08 08:11:33,600 INFO L175 Difference]: Start difference. First operand has 147 places, 120 transitions, 1594 flow. Second operand 36 states and 551 transitions. [2025-02-08 08:11:33,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 364 transitions, 5825 flow [2025-02-08 08:11:33,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 364 transitions, 4925 flow, removed 436 selfloop flow, removed 16 redundant places. [2025-02-08 08:11:33,827 INFO L231 Difference]: Finished difference. Result has 180 places, 155 transitions, 2414 flow [2025-02-08 08:11:33,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2414, PETRI_PLACES=180, PETRI_TRANSITIONS=155} [2025-02-08 08:11:33,828 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2025-02-08 08:11:33,828 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 155 transitions, 2414 flow [2025-02-08 08:11:33,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.277777777777779) internal successors, (185), 18 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:33,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:33,828 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:33,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 08:11:34,029 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,SelfDestructingSolverStorable10 [2025-02-08 08:11:34,029 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:34,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash 774409551, now seen corresponding path program 4 times [2025-02-08 08:11:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:34,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68117665] [2025-02-08 08:11:34,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:11:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:34,036 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-02-08 08:11:34,040 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:11:34,040 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:11:34,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:34,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68117665] [2025-02-08 08:11:34,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68117665] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:34,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873172851] [2025-02-08 08:11:34,214 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:11:34,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:34,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:34,216 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:34,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:11:34,251 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-02-08 08:11:34,262 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:11:34,262 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:11:34,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:34,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 08:11:34,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:34,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873172851] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:34,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-08 08:11:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674134622] [2025-02-08 08:11:34,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:34,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 08:11:34,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:34,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 08:11:34,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2025-02-08 08:11:34,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:34,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 155 transitions, 2414 flow. Second operand has 26 states, 26 states have (on average 10.038461538461538) internal successors, (261), 26 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) [2025-02-08 08:11:34,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:34,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:34,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:36,405 INFO L124 PetriNetUnfolderBase]: 2632/4901 cut-off events. [2025-02-08 08:11:36,405 INFO L125 PetriNetUnfolderBase]: For 333691/333691 co-relation queries the response was YES. [2025-02-08 08:11:36,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37125 conditions, 4901 events. 2632/4901 cut-off events. For 333691/333691 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 26522 event pairs, 89 based on Foata normal form. 99/4994 useless extension candidates. Maximal degree in co-relation 37044. Up to 780 conditions per place. [2025-02-08 08:11:36,443 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 164 selfloop transitions, 176 changer transitions 146/490 dead transitions. [2025-02-08 08:11:36,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 490 transitions, 9879 flow [2025-02-08 08:11:36,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-02-08 08:11:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2025-02-08 08:11:36,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 749 transitions. [2025-02-08 08:11:36,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5270935960591133 [2025-02-08 08:11:36,445 INFO L175 Difference]: Start difference. First operand has 180 places, 155 transitions, 2414 flow. Second operand 49 states and 749 transitions. [2025-02-08 08:11:36,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 490 transitions, 9879 flow [2025-02-08 08:11:36,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 490 transitions, 8173 flow, removed 823 selfloop flow, removed 20 redundant places. [2025-02-08 08:11:36,851 INFO L231 Difference]: Finished difference. Result has 230 places, 216 transitions, 3912 flow [2025-02-08 08:11:36,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=3912, PETRI_PLACES=230, PETRI_TRANSITIONS=216} [2025-02-08 08:11:36,852 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2025-02-08 08:11:36,852 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 216 transitions, 3912 flow [2025-02-08 08:11:36,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.038461538461538) internal successors, (261), 26 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) [2025-02-08 08:11:36,852 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:36,853 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:36,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 08:11:37,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 08:11:37,054 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:37,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:37,054 INFO L85 PathProgramCache]: Analyzing trace with hash 582731571, now seen corresponding path program 5 times [2025-02-08 08:11:37,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:37,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772707535] [2025-02-08 08:11:37,055 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:11:37,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:37,061 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 64 statements into 9 equivalence classes. [2025-02-08 08:11:37,071 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 08:11:37,071 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-08 08:11:37,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:37,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:37,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772707535] [2025-02-08 08:11:37,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772707535] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:37,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552768573] [2025-02-08 08:11:37,444 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:11:37,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:37,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:37,448 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:37,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 08:11:37,498 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 64 statements into 9 equivalence classes. [2025-02-08 08:11:37,517 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 08:11:37,517 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-08 08:11:37,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:37,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 08:11:37,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:37,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:38,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552768573] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:38,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:38,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2025-02-08 08:11:38,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106535544] [2025-02-08 08:11:38,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:38,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-08 08:11:38,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:38,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-08 08:11:38,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2025-02-08 08:11:38,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:38,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 216 transitions, 3912 flow. Second operand has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:38,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:38,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:38,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:39,660 INFO L124 PetriNetUnfolderBase]: 2704/5168 cut-off events. [2025-02-08 08:11:39,660 INFO L125 PetriNetUnfolderBase]: For 521278/521278 co-relation queries the response was YES. [2025-02-08 08:11:39,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42822 conditions, 5168 events. 2704/5168 cut-off events. For 521278/521278 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 29183 event pairs, 1013 based on Foata normal form. 63/5227 useless extension candidates. Maximal degree in co-relation 42719. Up to 3618 conditions per place. [2025-02-08 08:11:39,715 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 261 selfloop transitions, 45 changer transitions 95/405 dead transitions. [2025-02-08 08:11:39,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 405 transitions, 9268 flow [2025-02-08 08:11:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 08:11:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-02-08 08:11:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 484 transitions. [2025-02-08 08:11:39,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-02-08 08:11:39,717 INFO L175 Difference]: Start difference. First operand has 230 places, 216 transitions, 3912 flow. Second operand 33 states and 484 transitions. [2025-02-08 08:11:39,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 405 transitions, 9268 flow [2025-02-08 08:11:40,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 405 transitions, 6769 flow, removed 1228 selfloop flow, removed 17 redundant places. [2025-02-08 08:11:40,431 INFO L231 Difference]: Finished difference. Result has 249 places, 232 transitions, 3422 flow [2025-02-08 08:11:40,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3422, PETRI_PLACES=249, PETRI_TRANSITIONS=232} [2025-02-08 08:11:40,432 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2025-02-08 08:11:40,432 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 232 transitions, 3422 flow [2025-02-08 08:11:40,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:40,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:40,433 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:40,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 08:11:40,633 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,SelfDestructingSolverStorable12 [2025-02-08 08:11:40,633 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:40,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:40,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1100247189, now seen corresponding path program 6 times [2025-02-08 08:11:40,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:40,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693861016] [2025-02-08 08:11:40,634 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:11:40,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:40,639 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 64 statements into 7 equivalence classes. [2025-02-08 08:11:40,646 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 08:11:40,646 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-08 08:11:40,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:11:40,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:40,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693861016] [2025-02-08 08:11:40,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693861016] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:40,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306316619] [2025-02-08 08:11:40,953 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:11:40,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:40,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:40,955 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:40,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 08:11:40,992 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 64 statements into 7 equivalence classes. [2025-02-08 08:11:41,012 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 08:11:41,012 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-08 08:11:41,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:41,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 08:11:41,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:11:41,124 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:11:41,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306316619] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:41,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:41,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2025-02-08 08:11:41,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229578544] [2025-02-08 08:11:41,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:41,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-08 08:11:41,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:41,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-08 08:11:41,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2025-02-08 08:11:41,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:41,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 232 transitions, 3422 flow. Second operand has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:41,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:41,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:41,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:44,075 INFO L124 PetriNetUnfolderBase]: 3208/6321 cut-off events. [2025-02-08 08:11:44,076 INFO L125 PetriNetUnfolderBase]: For 504237/504237 co-relation queries the response was YES. [2025-02-08 08:11:44,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46499 conditions, 6321 events. 3208/6321 cut-off events. For 504237/504237 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 38008 event pairs, 596 based on Foata normal form. 63/6380 useless extension candidates. Maximal degree in co-relation 46391. Up to 2398 conditions per place. [2025-02-08 08:11:44,135 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 265 selfloop transitions, 165 changer transitions 135/569 dead transitions. [2025-02-08 08:11:44,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 569 transitions, 10301 flow [2025-02-08 08:11:44,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-02-08 08:11:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2025-02-08 08:11:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 773 transitions. [2025-02-08 08:11:44,137 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5029277813923227 [2025-02-08 08:11:44,137 INFO L175 Difference]: Start difference. First operand has 249 places, 232 transitions, 3422 flow. Second operand 53 states and 773 transitions. [2025-02-08 08:11:44,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 569 transitions, 10301 flow [2025-02-08 08:11:44,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 569 transitions, 9542 flow, removed 354 selfloop flow, removed 21 redundant places. [2025-02-08 08:11:44,799 INFO L231 Difference]: Finished difference. Result has 292 places, 288 transitions, 4594 flow [2025-02-08 08:11:44,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3005, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4594, PETRI_PLACES=292, PETRI_TRANSITIONS=288} [2025-02-08 08:11:44,801 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2025-02-08 08:11:44,801 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 288 transitions, 4594 flow [2025-02-08 08:11:44,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:44,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:44,801 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:44,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 08:11:45,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:45,008 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:45,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash -813741755, now seen corresponding path program 7 times [2025-02-08 08:11:45,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:45,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088675162] [2025-02-08 08:11:45,010 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:11:45,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:45,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-08 08:11:45,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 08:11:45,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:45,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:45,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:45,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088675162] [2025-02-08 08:11:45,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088675162] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:45,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98216516] [2025-02-08 08:11:45,284 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:11:45,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:45,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:45,290 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:45,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 08:11:45,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-08 08:11:45,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 08:11:45,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:45,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:45,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 08:11:45,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 1 proven. 95 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:45,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:45,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98216516] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:45,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:45,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2025-02-08 08:11:45,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101991493] [2025-02-08 08:11:45,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:45,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-02-08 08:11:45,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:45,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-02-08 08:11:45,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1446, Unknown=0, NotChecked=0, Total=1722 [2025-02-08 08:11:45,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:45,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 288 transitions, 4594 flow. Second operand has 42 states, 42 states have (on average 10.142857142857142) internal successors, (426), 42 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:45,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:45,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:45,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:48,326 INFO L124 PetriNetUnfolderBase]: 4099/8338 cut-off events. [2025-02-08 08:11:48,326 INFO L125 PetriNetUnfolderBase]: For 858935/858935 co-relation queries the response was YES. [2025-02-08 08:11:48,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68156 conditions, 8338 events. 4099/8338 cut-off events. For 858935/858935 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 54678 event pairs, 288 based on Foata normal form. 81/8415 useless extension candidates. Maximal degree in co-relation 68035. Up to 1731 conditions per place. [2025-02-08 08:11:48,493 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 239 selfloop transitions, 309 changer transitions 157/709 dead transitions. [2025-02-08 08:11:48,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 709 transitions, 14418 flow [2025-02-08 08:11:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-02-08 08:11:48,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2025-02-08 08:11:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 871 transitions. [2025-02-08 08:11:48,495 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5090590298071304 [2025-02-08 08:11:48,495 INFO L175 Difference]: Start difference. First operand has 292 places, 288 transitions, 4594 flow. Second operand 59 states and 871 transitions. [2025-02-08 08:11:48,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 709 transitions, 14418 flow [2025-02-08 08:11:50,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 709 transitions, 12941 flow, removed 640 selfloop flow, removed 29 redundant places. [2025-02-08 08:11:50,010 INFO L231 Difference]: Finished difference. Result has 337 places, 385 transitions, 6807 flow [2025-02-08 08:11:50,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=6807, PETRI_PLACES=337, PETRI_TRANSITIONS=385} [2025-02-08 08:11:50,011 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2025-02-08 08:11:50,011 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 385 transitions, 6807 flow [2025-02-08 08:11:50,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.142857142857142) internal successors, (426), 42 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:50,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:50,011 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:50,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 08:11:50,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-08 08:11:50,212 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:50,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:50,213 INFO L85 PathProgramCache]: Analyzing trace with hash 842253335, now seen corresponding path program 8 times [2025-02-08 08:11:50,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:50,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95277222] [2025-02-08 08:11:50,214 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:50,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:50,228 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 64 statements into 2 equivalence classes. [2025-02-08 08:11:50,247 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 08:11:50,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:11:50,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:50,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:50,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95277222] [2025-02-08 08:11:50,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95277222] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:50,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642271919] [2025-02-08 08:11:50,740 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:50,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:50,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:50,743 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:50,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 08:11:50,777 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 64 statements into 2 equivalence classes. [2025-02-08 08:11:50,792 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 08:11:50,792 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:11:50,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:50,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 08:11:50,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:50,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:51,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642271919] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:51,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:51,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2025-02-08 08:11:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120998438] [2025-02-08 08:11:51,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:51,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-08 08:11:51,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:51,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-08 08:11:51,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1383, Unknown=0, NotChecked=0, Total=1640 [2025-02-08 08:11:51,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:51,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 385 transitions, 6807 flow. Second operand has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:51,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:51,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:51,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:54,494 INFO L124 PetriNetUnfolderBase]: 5143/10450 cut-off events. [2025-02-08 08:11:54,495 INFO L125 PetriNetUnfolderBase]: For 1483460/1483460 co-relation queries the response was YES. [2025-02-08 08:11:54,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95113 conditions, 10450 events. 5143/10450 cut-off events. For 1483460/1483460 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 72343 event pairs, 150 based on Foata normal form. 81/10527 useless extension candidates. Maximal degree in co-relation 94975. Up to 2283 conditions per place. [2025-02-08 08:11:54,608 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 222 selfloop transitions, 422 changer transitions 157/805 dead transitions. [2025-02-08 08:11:54,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 805 transitions, 17658 flow [2025-02-08 08:11:54,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-02-08 08:11:54,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2025-02-08 08:11:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 881 transitions. [2025-02-08 08:11:54,610 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5149035651665692 [2025-02-08 08:11:54,610 INFO L175 Difference]: Start difference. First operand has 337 places, 385 transitions, 6807 flow. Second operand 59 states and 881 transitions. [2025-02-08 08:11:54,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 805 transitions, 17658 flow [2025-02-08 08:11:57,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 805 transitions, 15017 flow, removed 1172 selfloop flow, removed 31 redundant places. [2025-02-08 08:11:57,258 INFO L231 Difference]: Finished difference. Result has 381 places, 481 transitions, 8705 flow [2025-02-08 08:11:57,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5370, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=8705, PETRI_PLACES=381, PETRI_TRANSITIONS=481} [2025-02-08 08:11:57,259 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2025-02-08 08:11:57,259 INFO L471 AbstractCegarLoop]: Abstraction has has 381 places, 481 transitions, 8705 flow [2025-02-08 08:11:57,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:57,260 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:57,260 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:57,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 08:11:57,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:57,460 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:57,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:57,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1865836447, now seen corresponding path program 9 times [2025-02-08 08:11:57,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:57,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764500684] [2025-02-08 08:11:57,466 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:11:57,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:57,471 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 7 equivalence classes. [2025-02-08 08:11:57,489 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 08:11:57,489 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-08 08:11:57,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:57,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:57,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764500684] [2025-02-08 08:11:57,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764500684] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:57,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452466424] [2025-02-08 08:11:57,693 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:11:57,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:57,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:57,696 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:57,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 08:11:57,727 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 7 equivalence classes. [2025-02-08 08:11:57,742 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 64 of 64 statements. [2025-02-08 08:11:57,743 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-08 08:11:57,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:57,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 08:11:57,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 1 proven. 181 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:57,829 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:58,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452466424] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:58,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:58,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2025-02-08 08:11:58,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532249191] [2025-02-08 08:11:58,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:58,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-02-08 08:11:58,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:58,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-02-08 08:11:58,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1407, Unknown=0, NotChecked=0, Total=1722 [2025-02-08 08:11:58,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:58,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 481 transitions, 8705 flow. Second operand has 42 states, 42 states have (on average 10.166666666666666) internal successors, (427), 42 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:58,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:58,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:58,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:01,872 INFO L124 PetriNetUnfolderBase]: 5917/11886 cut-off events. [2025-02-08 08:12:01,872 INFO L125 PetriNetUnfolderBase]: For 1948012/1948012 co-relation queries the response was YES. [2025-02-08 08:12:01,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114536 conditions, 11886 events. 5917/11886 cut-off events. For 1948012/1948012 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 83767 event pairs, 66 based on Foata normal form. 90/11972 useless extension candidates. Maximal degree in co-relation 114380. Up to 2604 conditions per place. [2025-02-08 08:12:02,030 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 215 selfloop transitions, 495 changer transitions 162/876 dead transitions. [2025-02-08 08:12:02,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 876 transitions, 20168 flow [2025-02-08 08:12:02,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-02-08 08:12:02,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2025-02-08 08:12:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 907 transitions. [2025-02-08 08:12:02,033 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.521264367816092 [2025-02-08 08:12:02,033 INFO L175 Difference]: Start difference. First operand has 381 places, 481 transitions, 8705 flow. Second operand 60 states and 907 transitions. [2025-02-08 08:12:02,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 876 transitions, 20168 flow [2025-02-08 08:12:06,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 876 transitions, 17634 flow, removed 1081 selfloop flow, removed 34 redundant places. [2025-02-08 08:12:06,487 INFO L231 Difference]: Finished difference. Result has 421 places, 541 transitions, 10314 flow [2025-02-08 08:12:06,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=7085, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=442, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=10314, PETRI_PLACES=421, PETRI_TRANSITIONS=541} [2025-02-08 08:12:06,489 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2025-02-08 08:12:06,489 INFO L471 AbstractCegarLoop]: Abstraction has has 421 places, 541 transitions, 10314 flow [2025-02-08 08:12:06,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.166666666666666) internal successors, (427), 42 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:06,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:06,489 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:06,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 08:12:06,689 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,SelfDestructingSolverStorable16 [2025-02-08 08:12:06,690 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:06,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:06,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1976084629, now seen corresponding path program 10 times [2025-02-08 08:12:06,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:12:06,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152992798] [2025-02-08 08:12:06,696 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:12:06,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:12:06,700 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 67 statements into 2 equivalence classes. [2025-02-08 08:12:06,710 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 08:12:06,710 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:12:06,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:12:06,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:12:06,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152992798] [2025-02-08 08:12:06,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152992798] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:12:06,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21407360] [2025-02-08 08:12:06,967 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:12:06,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:06,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:06,969 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:06,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 08:12:06,998 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 67 statements into 2 equivalence classes. [2025-02-08 08:12:07,011 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 08:12:07,011 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:12:07,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:07,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 08:12:07,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:12:07,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:12:07,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21407360] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:07,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:12:07,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 42 [2025-02-08 08:12:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774184180] [2025-02-08 08:12:07,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:07,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-08 08:12:07,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:12:07,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-08 08:12:07,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2025-02-08 08:12:07,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:07,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 541 transitions, 10314 flow. Second operand has 43 states, 43 states have (on average 10.116279069767442) internal successors, (435), 43 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:07,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:07,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:07,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:11,131 INFO L124 PetriNetUnfolderBase]: 6052/12227 cut-off events. [2025-02-08 08:12:11,131 INFO L125 PetriNetUnfolderBase]: For 2468655/2468655 co-relation queries the response was YES. [2025-02-08 08:12:11,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125007 conditions, 12227 events. 6052/12227 cut-off events. For 2468655/2468655 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86811 event pairs, 203 based on Foata normal form. 27/12248 useless extension candidates. Maximal degree in co-relation 124836. Up to 2658 conditions per place. [2025-02-08 08:12:11,299 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 226 selfloop transitions, 479 changer transitions 87/796 dead transitions. [2025-02-08 08:12:11,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 796 transitions, 18535 flow [2025-02-08 08:12:11,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-02-08 08:12:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2025-02-08 08:12:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 653 transitions. [2025-02-08 08:12:11,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5236567762630313 [2025-02-08 08:12:11,302 INFO L175 Difference]: Start difference. First operand has 421 places, 541 transitions, 10314 flow. Second operand 43 states and 653 transitions. [2025-02-08 08:12:11,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 796 transitions, 18535 flow [2025-02-08 08:12:17,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 796 transitions, 15092 flow, removed 1418 selfloop flow, removed 42 redundant places. [2025-02-08 08:12:17,406 INFO L231 Difference]: Finished difference. Result has 418 places, 559 transitions, 10087 flow [2025-02-08 08:12:17,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=8289, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=10087, PETRI_PLACES=418, PETRI_TRANSITIONS=559} [2025-02-08 08:12:17,408 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2025-02-08 08:12:17,408 INFO L471 AbstractCegarLoop]: Abstraction has has 418 places, 559 transitions, 10087 flow [2025-02-08 08:12:17,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 10.116279069767442) internal successors, (435), 43 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:17,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:17,408 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:17,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-08 08:12:17,609 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,SelfDestructingSolverStorable17 [2025-02-08 08:12:17,609 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:17,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:17,610 INFO L85 PathProgramCache]: Analyzing trace with hash 985977773, now seen corresponding path program 11 times [2025-02-08 08:12:17,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:12:17,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590583638] [2025-02-08 08:12:17,610 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:12:17,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:12:17,616 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 67 statements into 7 equivalence classes. [2025-02-08 08:12:17,630 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 08:12:17,634 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-08 08:12:17,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:12:17,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:12:17,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590583638] [2025-02-08 08:12:17,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590583638] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:12:17,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860134175] [2025-02-08 08:12:17,885 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:12:17,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:17,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:17,888 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:17,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 08:12:17,921 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 67 statements into 7 equivalence classes. [2025-02-08 08:12:17,936 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 08:12:17,937 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-08 08:12:17,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:17,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 08:12:17,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:12:18,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:18,338 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:12:18,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860134175] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:18,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:12:18,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2025-02-08 08:12:18,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427373383] [2025-02-08 08:12:18,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:18,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-02-08 08:12:18,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:12:18,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-02-08 08:12:18,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2025-02-08 08:12:18,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:18,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 559 transitions, 10087 flow. Second operand has 44 states, 44 states have (on average 10.113636363636363) internal successors, (445), 44 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:18,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:18,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:18,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:22,214 INFO L124 PetriNetUnfolderBase]: 6025/12186 cut-off events. [2025-02-08 08:12:22,214 INFO L125 PetriNetUnfolderBase]: For 1926101/1926101 co-relation queries the response was YES. [2025-02-08 08:12:22,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112698 conditions, 12186 events. 6025/12186 cut-off events. For 1926101/1926101 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86351 event pairs, 152 based on Foata normal form. 45/12227 useless extension candidates. Maximal degree in co-relation 112529. Up to 2610 conditions per place. [2025-02-08 08:12:22,433 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 212 selfloop transitions, 492 changer transitions 101/809 dead transitions. [2025-02-08 08:12:22,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 809 transitions, 17024 flow [2025-02-08 08:12:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-02-08 08:12:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2025-02-08 08:12:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 681 transitions. [2025-02-08 08:12:22,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5218390804597701 [2025-02-08 08:12:22,441 INFO L175 Difference]: Start difference. First operand has 418 places, 559 transitions, 10087 flow. Second operand 45 states and 681 transitions. [2025-02-08 08:12:22,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 809 transitions, 17024 flow [2025-02-08 08:12:27,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 809 transitions, 15411 flow, removed 651 selfloop flow, removed 24 redundant places. [2025-02-08 08:12:27,166 INFO L231 Difference]: Finished difference. Result has 441 places, 562 transitions, 10582 flow [2025-02-08 08:12:27,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=9258, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=489, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=10582, PETRI_PLACES=441, PETRI_TRANSITIONS=562} [2025-02-08 08:12:27,166 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2025-02-08 08:12:27,166 INFO L471 AbstractCegarLoop]: Abstraction has has 441 places, 562 transitions, 10582 flow [2025-02-08 08:12:27,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 10.113636363636363) internal successors, (445), 44 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:27,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:27,167 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:27,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 08:12:27,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:27,367 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:27,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1885817137, now seen corresponding path program 12 times [2025-02-08 08:12:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:12:27,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403303809] [2025-02-08 08:12:27,368 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:12:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:12:27,372 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 70 statements into 8 equivalence classes. [2025-02-08 08:12:27,377 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 70 of 70 statements. [2025-02-08 08:12:27,377 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-02-08 08:12:27,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:12:27,377 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:12:27,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-08 08:12:27,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-08 08:12:27,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:12:27,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:12:27,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 08:12:27,415 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:12:27,415 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-02-08 08:12:27,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-02-08 08:12:27,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-02-08 08:12:27,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-02-08 08:12:27,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 08:12:27,420 INFO L422 BasicCegarLoop]: Path program histogram: [12, 2, 2, 1, 1, 1, 1] [2025-02-08 08:12:27,477 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:12:27,477 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:12:27,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:12:27 BasicIcfg [2025-02-08 08:12:27,481 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:12:27,481 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:12:27,481 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:12:27,481 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:12:27,482 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:26" (3/4) ... [2025-02-08 08:12:27,484 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:12:27,484 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:12:27,485 INFO L158 Benchmark]: Toolchain (without parser) took 62137.29ms. Allocated memory was 142.6MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 111.5MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2025-02-08 08:12:27,485 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:12:27,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.86ms. Allocated memory is still 142.6MB. Free memory was 111.5MB in the beginning and 92.3MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:12:27,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.46ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 90.6MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:12:27,486 INFO L158 Benchmark]: Boogie Preprocessor took 17.93ms. Allocated memory is still 142.6MB. Free memory was 90.6MB in the beginning and 89.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:12:27,486 INFO L158 Benchmark]: IcfgBuilder took 326.29ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 70.7MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:12:27,486 INFO L158 Benchmark]: TraceAbstraction took 61416.89ms. Allocated memory was 142.6MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 70.3MB in the beginning and 1.9GB in the end (delta: -1.9GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2025-02-08 08:12:27,486 INFO L158 Benchmark]: Witness Printer took 3.13ms. Allocated memory is still 3.5GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 270.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:12:27,487 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.86ms. Allocated memory is still 142.6MB. Free memory was 111.5MB in the beginning and 92.3MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.46ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 90.6MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.93ms. Allocated memory is still 142.6MB. Free memory was 90.6MB in the beginning and 89.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 326.29ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 70.7MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 61416.89ms. Allocated memory was 142.6MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 70.3MB in the beginning and 1.9GB in the end (delta: -1.9GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 3.13ms. Allocated memory is still 3.5GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 270.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, argc=49, i=3, id1=-2, j=6] [L696] 1 int k = 0; VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, argc=49, i=3, id1=-2, id2=-1, j=6, k=0] [L704] 2 int k = 0; VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, arg={0:0}, argc=49, condI=0, i=23, id1=-2, id2=-1, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L719] 0 int condJ = j >= (2*10 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, arg={0:0}, argc=49, condI=0, condJ=1, i=25, id1=-2, id2=-1, j=26, k=9, k=9] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L693] 0 __assert_fail ("0", "triangular-longer-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 61.3s, OverallIterations: 20, TraceHistogramMax: 10, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 49.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7766 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7764 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 408 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8113 IncrementalHoareTripleChecker+Invalid, 8521 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 408 mSolverCounterUnsat, 1 mSDtfsCounter, 8113 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1865 GetRequests, 1004 SyntacticMatches, 0 SemanticMatches, 861 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18072 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10582occurred in iteration=19, InterpolantAutomatonStates: 568, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 1349 NumberOfCodeBlocks, 1349 NumberOfCodeBlocksAsserted, 105 NumberOfCheckSat, 1830 ConstructedInterpolants, 0 QuantifiedInterpolants, 8043 SizeOfPredicates, 160 NumberOfNonLiveVariables, 1702 ConjunctsInSsa, 220 ConjunctsInUnsatCore, 43 InterpolantComputations, 7 PerfectInterpolantSequences, 56/3483 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-08 08:12:27,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/triangular-longer-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:12:29,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:12:29,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 08:12:29,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:12:29,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:12:29,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:12:29,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:12:29,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:12:29,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:12:29,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:12:29,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:12:29,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:12:29,882 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:12:29,883 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:12:29,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:12:29,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:12:29,884 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 -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2025-02-08 08:12:30,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:12:30,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:12:30,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:12:30,142 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:12:30,144 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:12:30,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-2.i [2025-02-08 08:12:31,956 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/192cfa9b2/d5dcef3567ed4baf9a99e8c14537e02b/FLAG754b6787a [2025-02-08 08:12:32,160 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:12:32,160 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-2.i [2025-02-08 08:12:32,172 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/192cfa9b2/d5dcef3567ed4baf9a99e8c14537e02b/FLAG754b6787a [2025-02-08 08:12:32,185 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/192cfa9b2/d5dcef3567ed4baf9a99e8c14537e02b [2025-02-08 08:12:32,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:12:32,188 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:12:32,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:12:32,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:12:32,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:12:32,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f31ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32, skipping insertion in model container [2025-02-08 08:12:32,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,208 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:12:32,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:12:32,415 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:12:32,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:12:32,495 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:12:32,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32 WrapperNode [2025-02-08 08:12:32,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:12:32,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:12:32,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:12:32,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:12:32,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,530 INFO L138 Inliner]: procedures = 169, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2025-02-08 08:12:32,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:12:32,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:12:32,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:12:32,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:12:32,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,537 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,552 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 08:12:32,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,561 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,563 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:12:32,567 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:12:32,568 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:12:32,568 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:12:32,570 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (1/1) ... [2025-02-08 08:12:32,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:12:32,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:32,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:12:32,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:12:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-08 08:12:32,630 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-08 08:12:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-08 08:12:32,630 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-08 08:12:32,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:12:32,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:12:32,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 08:12:32,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:12:32,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:12:32,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:12:32,632 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:12:32,743 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:12:32,745 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:12:32,863 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:12:32,864 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:12:32,941 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:12:32,942 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:12:32,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:12:32 BoogieIcfgContainer [2025-02-08 08:12:32,942 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:12:32,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:12:32,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:12:32,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:12:32,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:12:32" (1/3) ... [2025-02-08 08:12:32,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d97e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:12:32, skipping insertion in model container [2025-02-08 08:12:32,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:12:32" (2/3) ... [2025-02-08 08:12:32,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d97e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:12:32, skipping insertion in model container [2025-02-08 08:12:32,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:12:32" (3/3) ... [2025-02-08 08:12:32,948 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2025-02-08 08:12:32,958 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:12:32,959 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longer-2.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-08 08:12:32,959 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:12:33,011 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 08:12:33,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2025-02-08 08:12:33,064 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-02-08 08:12:33,068 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:12:33,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-08 08:12:33,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2025-02-08 08:12:33,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2025-02-08 08:12:33,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:12:33,093 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;@ae46e4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:12:33,094 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 08:12:33,107 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:12:33,107 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-02-08 08:12:33,107 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:12:33,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:33,108 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:33,108 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:33,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:33,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1792361786, now seen corresponding path program 1 times [2025-02-08 08:12:33,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:33,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061948169] [2025-02-08 08:12:33,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:12:33,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:33,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:33,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:33,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:12:33,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:12:33,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:12:33,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:12:33,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:33,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 08:12:33,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:33,237 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:33,237 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:33,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061948169] [2025-02-08 08:12:33,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061948169] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:33,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:33,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:12:33,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146155711] [2025-02-08 08:12:33,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:33,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:12:33,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:33,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:12:33,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:12:33,267 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:33,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:33,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:33,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:33,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:33,362 INFO L124 PetriNetUnfolderBase]: 185/359 cut-off events. [2025-02-08 08:12:33,362 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:12:33,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 359 events. 185/359 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1574 event pairs, 135 based on Foata normal form. 32/386 useless extension candidates. Maximal degree in co-relation 653. Up to 290 conditions per place. [2025-02-08 08:12:33,369 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 15 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2025-02-08 08:12:33,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 86 flow [2025-02-08 08:12:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:12:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:12:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-02-08 08:12:33,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-02-08 08:12:33,381 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 44 transitions. [2025-02-08 08:12:33,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 86 flow [2025-02-08 08:12:33,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:12:33,400 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2025-02-08 08:12:33,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2025-02-08 08:12:33,405 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2025-02-08 08:12:33,405 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2025-02-08 08:12:33,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:33,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:33,406 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:33,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 08:12:33,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:33,607 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:33,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:33,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1792361335, now seen corresponding path program 1 times [2025-02-08 08:12:33,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:33,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102021445] [2025-02-08 08:12:33,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:12:33,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:33,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:33,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:33,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 08:12:33,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:12:33,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:12:33,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:12:33,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:33,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:12:33,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:33,780 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:33,780 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:33,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102021445] [2025-02-08 08:12:33,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102021445] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:33,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:33,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:12:33,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265688168] [2025-02-08 08:12:33,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:33,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:12:33,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:33,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:12:33,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:12:33,784 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:33,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:33,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:33,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:33,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:34,030 INFO L124 PetriNetUnfolderBase]: 328/593 cut-off events. [2025-02-08 08:12:34,030 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:12:34,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 593 events. 328/593 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2607 event pairs, 45 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 1120. Up to 243 conditions per place. [2025-02-08 08:12:34,034 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 7 changer transitions 29/69 dead transitions. [2025-02-08 08:12:34,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 69 transitions, 274 flow [2025-02-08 08:12:34,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:12:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:12:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2025-02-08 08:12:34,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5646551724137931 [2025-02-08 08:12:34,038 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 8 states and 131 transitions. [2025-02-08 08:12:34,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 69 transitions, 274 flow [2025-02-08 08:12:34,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 69 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:12:34,040 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 100 flow [2025-02-08 08:12:34,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2025-02-08 08:12:34,042 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2025-02-08 08:12:34,042 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 100 flow [2025-02-08 08:12:34,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:34,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:34,043 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:34,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 08:12:34,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:34,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:34,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:34,245 INFO L85 PathProgramCache]: Analyzing trace with hash 123035499, now seen corresponding path program 1 times [2025-02-08 08:12:34,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:34,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595619631] [2025-02-08 08:12:34,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:12:34,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:34,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:34,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:34,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 08:12:34,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:12:34,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:12:34,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:12:34,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:34,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:12:34,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:34,334 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:34,334 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:34,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595619631] [2025-02-08 08:12:34,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595619631] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:34,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:34,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:12:34,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172954923] [2025-02-08 08:12:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:34,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:12:34,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:34,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:12:34,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:12:34,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:34,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:34,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:34,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:34,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:34,475 INFO L124 PetriNetUnfolderBase]: 247/454 cut-off events. [2025-02-08 08:12:34,475 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2025-02-08 08:12:34,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 454 events. 247/454 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1820 event pairs, 50 based on Foata normal form. 18/468 useless extension candidates. Maximal degree in co-relation 1170. Up to 190 conditions per place. [2025-02-08 08:12:34,491 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 30 selfloop transitions, 9 changer transitions 16/59 dead transitions. [2025-02-08 08:12:34,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 316 flow [2025-02-08 08:12:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 08:12:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 08:12:34,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2025-02-08 08:12:34,493 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.541871921182266 [2025-02-08 08:12:34,493 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 100 flow. Second operand 7 states and 110 transitions. [2025-02-08 08:12:34,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 316 flow [2025-02-08 08:12:34,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 312 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-08 08:12:34,496 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 143 flow [2025-02-08 08:12:34,496 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2025-02-08 08:12:34,496 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2025-02-08 08:12:34,497 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 143 flow [2025-02-08 08:12:34,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:34,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:34,497 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:34,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 08:12:34,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:34,701 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:34,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:34,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1292581058, now seen corresponding path program 1 times [2025-02-08 08:12:34,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:34,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237359952] [2025-02-08 08:12:34,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:12:34,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:34,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:34,705 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:34,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 08:12:34,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:12:34,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:12:34,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:12:34,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:34,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:12:34,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:34,886 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:34,886 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:34,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237359952] [2025-02-08 08:12:34,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237359952] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:34,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:34,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:12:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463683263] [2025-02-08 08:12:34,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:34,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:12:34,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:34,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:12:34,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:12:34,891 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:34,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:34,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:34,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:34,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:35,150 INFO L124 PetriNetUnfolderBase]: 391/725 cut-off events. [2025-02-08 08:12:35,150 INFO L125 PetriNetUnfolderBase]: For 1146/1146 co-relation queries the response was YES. [2025-02-08 08:12:35,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2115 conditions, 725 events. 391/725 cut-off events. For 1146/1146 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3203 event pairs, 95 based on Foata normal form. 27/748 useless extension candidates. Maximal degree in co-relation 2098. Up to 264 conditions per place. [2025-02-08 08:12:35,154 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 47 selfloop transitions, 11 changer transitions 20/82 dead transitions. [2025-02-08 08:12:35,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 82 transitions, 517 flow [2025-02-08 08:12:35,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:12:35,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 08:12:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-02-08 08:12:35,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-02-08 08:12:35,156 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 143 flow. Second operand 9 states and 144 transitions. [2025-02-08 08:12:35,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 82 transitions, 517 flow [2025-02-08 08:12:35,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 478 flow, removed 17 selfloop flow, removed 3 redundant places. [2025-02-08 08:12:35,160 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 236 flow [2025-02-08 08:12:35,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2025-02-08 08:12:35,161 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2025-02-08 08:12:35,161 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 236 flow [2025-02-08 08:12:35,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:35,161 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:35,161 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:35,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 08:12:35,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:35,362 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:35,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:35,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1409592770, now seen corresponding path program 2 times [2025-02-08 08:12:35,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:35,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272153191] [2025-02-08 08:12:35,363 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:12:35,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:35,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:35,367 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:35,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:12:35,400 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:12:35,406 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:12:35,406 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:12:35,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:35,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:12:35,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:35,454 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:35,454 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:35,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272153191] [2025-02-08 08:12:35,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272153191] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:35,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:35,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:12:35,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929751950] [2025-02-08 08:12:35,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:35,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:12:35,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:35,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:12:35,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:12:35,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:35,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:35,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:35,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:35,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:35,672 INFO L124 PetriNetUnfolderBase]: 346/655 cut-off events. [2025-02-08 08:12:35,672 INFO L125 PetriNetUnfolderBase]: For 2058/2058 co-relation queries the response was YES. [2025-02-08 08:12:35,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 655 events. 346/655 cut-off events. For 2058/2058 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2875 event pairs, 88 based on Foata normal form. 45/696 useless extension candidates. Maximal degree in co-relation 2166. Up to 273 conditions per place. [2025-02-08 08:12:35,675 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 40 selfloop transitions, 12 changer transitions 30/86 dead transitions. [2025-02-08 08:12:35,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 655 flow [2025-02-08 08:12:35,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:12:35,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 08:12:35,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-02-08 08:12:35,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2025-02-08 08:12:35,676 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 236 flow. Second operand 9 states and 140 transitions. [2025-02-08 08:12:35,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 655 flow [2025-02-08 08:12:35,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 595 flow, removed 30 selfloop flow, removed 2 redundant places. [2025-02-08 08:12:35,682 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 278 flow [2025-02-08 08:12:35,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=278, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2025-02-08 08:12:35,683 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2025-02-08 08:12:35,683 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 278 flow [2025-02-08 08:12:35,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:35,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:35,683 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:35,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 08:12:35,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:35,887 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:35,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:35,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1069631228, now seen corresponding path program 1 times [2025-02-08 08:12:35,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:35,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021684952] [2025-02-08 08:12:35,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:12:35,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:35,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:35,891 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:35,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 08:12:35,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:12:35,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:12:35,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:12:35,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:35,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:12:35,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:35,978 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:35,978 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:35,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021684952] [2025-02-08 08:12:35,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021684952] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:35,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:35,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:12:35,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243003679] [2025-02-08 08:12:35,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:35,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:12:35,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:35,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:12:35,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:12:35,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:35,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:35,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:35,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:35,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:36,195 INFO L124 PetriNetUnfolderBase]: 427/806 cut-off events. [2025-02-08 08:12:36,195 INFO L125 PetriNetUnfolderBase]: For 3492/3492 co-relation queries the response was YES. [2025-02-08 08:12:36,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2902 conditions, 806 events. 427/806 cut-off events. For 3492/3492 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3713 event pairs, 122 based on Foata normal form. 27/829 useless extension candidates. Maximal degree in co-relation 2874. Up to 316 conditions per place. [2025-02-08 08:12:36,198 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 51 selfloop transitions, 12 changer transitions 26/93 dead transitions. [2025-02-08 08:12:36,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 93 transitions, 752 flow [2025-02-08 08:12:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:12:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 08:12:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2025-02-08 08:12:36,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2025-02-08 08:12:36,200 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 278 flow. Second operand 10 states and 158 transitions. [2025-02-08 08:12:36,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 93 transitions, 752 flow [2025-02-08 08:12:36,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 93 transitions, 718 flow, removed 11 selfloop flow, removed 4 redundant places. [2025-02-08 08:12:36,208 INFO L231 Difference]: Finished difference. Result has 68 places, 43 transitions, 345 flow [2025-02-08 08:12:36,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=345, PETRI_PLACES=68, PETRI_TRANSITIONS=43} [2025-02-08 08:12:36,208 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2025-02-08 08:12:36,209 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 43 transitions, 345 flow [2025-02-08 08:12:36,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:36,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:36,209 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:36,216 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 [2025-02-08 08:12:36,413 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 [2025-02-08 08:12:36,413 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:36,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:36,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1761094232, now seen corresponding path program 2 times [2025-02-08 08:12:36,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:36,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347175555] [2025-02-08 08:12:36,414 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:12:36,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:36,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:36,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:36,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 08:12:36,449 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:12:36,456 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:12:36,456 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:12:36,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:36,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:12:36,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:36,505 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:36,505 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:36,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347175555] [2025-02-08 08:12:36,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347175555] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:36,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:36,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:12:36,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405260705] [2025-02-08 08:12:36,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:36,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:12:36,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:36,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:12:36,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:12:36,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:36,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 43 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:36,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:36,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:36,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:36,761 INFO L124 PetriNetUnfolderBase]: 463/891 cut-off events. [2025-02-08 08:12:36,762 INFO L125 PetriNetUnfolderBase]: For 6473/6473 co-relation queries the response was YES. [2025-02-08 08:12:36,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3609 conditions, 891 events. 463/891 cut-off events. For 6473/6473 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4355 event pairs, 120 based on Foata normal form. 27/914 useless extension candidates. Maximal degree in co-relation 3577. Up to 340 conditions per place. [2025-02-08 08:12:36,767 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 56 selfloop transitions, 17 changer transitions 30/107 dead transitions. [2025-02-08 08:12:36,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 978 flow [2025-02-08 08:12:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 08:12:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 08:12:36,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2025-02-08 08:12:36,768 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-02-08 08:12:36,768 INFO L175 Difference]: Start difference. First operand has 68 places, 43 transitions, 345 flow. Second operand 12 states and 186 transitions. [2025-02-08 08:12:36,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 978 flow [2025-02-08 08:12:36,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 842 flow, removed 59 selfloop flow, removed 7 redundant places. [2025-02-08 08:12:36,776 INFO L231 Difference]: Finished difference. Result has 75 places, 48 transitions, 395 flow [2025-02-08 08:12:36,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=395, PETRI_PLACES=75, PETRI_TRANSITIONS=48} [2025-02-08 08:12:36,777 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2025-02-08 08:12:36,777 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 48 transitions, 395 flow [2025-02-08 08:12:36,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:36,777 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:36,777 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:36,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 08:12:36,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:36,978 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:36,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:36,979 INFO L85 PathProgramCache]: Analyzing trace with hash 810027100, now seen corresponding path program 3 times [2025-02-08 08:12:36,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:36,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225076915] [2025-02-08 08:12:36,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:12:36,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:36,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:36,983 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:36,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 08:12:37,016 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:12:37,022 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:12:37,022 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 08:12:37,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:37,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:12:37,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:37,155 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:37,156 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:37,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225076915] [2025-02-08 08:12:37,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225076915] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:37,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:37,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:12:37,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086886534] [2025-02-08 08:12:37,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:37,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:12:37,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:37,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:12:37,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:12:37,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:37,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 48 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:37,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:37,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:37,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:37,453 INFO L124 PetriNetUnfolderBase]: 436/839 cut-off events. [2025-02-08 08:12:37,453 INFO L125 PetriNetUnfolderBase]: For 6137/6137 co-relation queries the response was YES. [2025-02-08 08:12:37,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3329 conditions, 839 events. 436/839 cut-off events. For 6137/6137 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4066 event pairs, 152 based on Foata normal form. 27/862 useless extension candidates. Maximal degree in co-relation 3295. Up to 555 conditions per place. [2025-02-08 08:12:37,459 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 9 changer transitions 29/96 dead transitions. [2025-02-08 08:12:37,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 875 flow [2025-02-08 08:12:37,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:12:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 08:12:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2025-02-08 08:12:37,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5275862068965518 [2025-02-08 08:12:37,460 INFO L175 Difference]: Start difference. First operand has 75 places, 48 transitions, 395 flow. Second operand 10 states and 153 transitions. [2025-02-08 08:12:37,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 875 flow [2025-02-08 08:12:37,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 804 flow, removed 25 selfloop flow, removed 7 redundant places. [2025-02-08 08:12:37,471 INFO L231 Difference]: Finished difference. Result has 79 places, 50 transitions, 405 flow [2025-02-08 08:12:37,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=405, PETRI_PLACES=79, PETRI_TRANSITIONS=50} [2025-02-08 08:12:37,472 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2025-02-08 08:12:37,473 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 50 transitions, 405 flow [2025-02-08 08:12:37,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:37,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:37,474 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:37,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 08:12:37,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:37,674 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:37,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:37,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1508505852, now seen corresponding path program 4 times [2025-02-08 08:12:37,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:37,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833320371] [2025-02-08 08:12:37,675 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:12:37,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:37,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:37,677 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:37,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 08:12:37,714 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-08 08:12:37,722 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:12:37,722 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:12:37,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:37,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:12:37,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:37,852 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:37,852 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:37,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833320371] [2025-02-08 08:12:37,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833320371] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:37,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:37,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:12:37,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765704935] [2025-02-08 08:12:37,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:37,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:12:37,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:37,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:12:37,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:12:37,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:37,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 50 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:37,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:37,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:37,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:38,261 INFO L124 PetriNetUnfolderBase]: 463/887 cut-off events. [2025-02-08 08:12:38,262 INFO L125 PetriNetUnfolderBase]: For 6613/6613 co-relation queries the response was YES. [2025-02-08 08:12:38,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 887 events. 463/887 cut-off events. For 6613/6613 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4344 event pairs, 152 based on Foata normal form. 18/901 useless extension candidates. Maximal degree in co-relation 3472. Up to 456 conditions per place. [2025-02-08 08:12:38,266 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 16 changer transitions 21/95 dead transitions. [2025-02-08 08:12:38,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 883 flow [2025-02-08 08:12:38,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:12:38,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 08:12:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-02-08 08:12:38,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2025-02-08 08:12:38,267 INFO L175 Difference]: Start difference. First operand has 79 places, 50 transitions, 405 flow. Second operand 9 states and 140 transitions. [2025-02-08 08:12:38,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 883 flow [2025-02-08 08:12:38,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 95 transitions, 827 flow, removed 21 selfloop flow, removed 7 redundant places. [2025-02-08 08:12:38,276 INFO L231 Difference]: Finished difference. Result has 81 places, 53 transitions, 468 flow [2025-02-08 08:12:38,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=468, PETRI_PLACES=81, PETRI_TRANSITIONS=53} [2025-02-08 08:12:38,277 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2025-02-08 08:12:38,277 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 53 transitions, 468 flow [2025-02-08 08:12:38,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:38,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:38,277 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:38,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 08:12:38,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:38,478 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:38,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:38,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1029340574, now seen corresponding path program 1 times [2025-02-08 08:12:38,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:38,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754194953] [2025-02-08 08:12:38,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:12:38,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:38,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:38,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:38,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 08:12:38,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:12:38,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:12:38,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:12:38,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:38,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:12:38,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:38,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:38,763 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:38,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754194953] [2025-02-08 08:12:38,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754194953] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:38,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:12:38,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2025-02-08 08:12:38,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32034383] [2025-02-08 08:12:38,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:38,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 08:12:38,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:38,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 08:12:38,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-02-08 08:12:38,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:38,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 53 transitions, 468 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:38,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:38,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:38,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:39,401 INFO L124 PetriNetUnfolderBase]: 697/1284 cut-off events. [2025-02-08 08:12:39,401 INFO L125 PetriNetUnfolderBase]: For 14498/14498 co-relation queries the response was YES. [2025-02-08 08:12:39,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5775 conditions, 1284 events. 697/1284 cut-off events. For 14498/14498 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6064 event pairs, 36 based on Foata normal form. 45/1325 useless extension candidates. Maximal degree in co-relation 5738. Up to 191 conditions per place. [2025-02-08 08:12:39,407 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 69 selfloop transitions, 43 changer transitions 60/176 dead transitions. [2025-02-08 08:12:39,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 176 transitions, 1752 flow [2025-02-08 08:12:39,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 08:12:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 08:12:39,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 323 transitions. [2025-02-08 08:12:39,409 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5303776683087028 [2025-02-08 08:12:39,409 INFO L175 Difference]: Start difference. First operand has 81 places, 53 transitions, 468 flow. Second operand 21 states and 323 transitions. [2025-02-08 08:12:39,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 176 transitions, 1752 flow [2025-02-08 08:12:39,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 176 transitions, 1659 flow, removed 36 selfloop flow, removed 6 redundant places. [2025-02-08 08:12:39,425 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 885 flow [2025-02-08 08:12:39,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=885, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2025-02-08 08:12:39,426 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2025-02-08 08:12:39,426 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 885 flow [2025-02-08 08:12:39,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:39,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:39,427 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:39,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 08:12:39,630 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 [2025-02-08 08:12:39,631 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:39,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1628576787, now seen corresponding path program 1 times [2025-02-08 08:12:39,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:39,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794567513] [2025-02-08 08:12:39,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:12:39,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:39,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:39,634 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:39,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 08:12:39,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:12:39,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:12:39,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:12:39,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:39,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:12:39,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:39,735 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:39,735 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:39,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794567513] [2025-02-08 08:12:39,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794567513] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:39,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:39,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 08:12:39,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637584679] [2025-02-08 08:12:39,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:39,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:12:39,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:39,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:12:39,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:12:39,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:39,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 885 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:39,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:39,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:39,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:40,044 INFO L124 PetriNetUnfolderBase]: 679/1283 cut-off events. [2025-02-08 08:12:40,044 INFO L125 PetriNetUnfolderBase]: For 18449/18449 co-relation queries the response was YES. [2025-02-08 08:12:40,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6064 conditions, 1283 events. 679/1283 cut-off events. For 18449/18449 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6458 event pairs, 239 based on Foata normal form. 27/1306 useless extension candidates. Maximal degree in co-relation 6019. Up to 828 conditions per place. [2025-02-08 08:12:40,051 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 73 selfloop transitions, 15 changer transitions 31/123 dead transitions. [2025-02-08 08:12:40,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 123 transitions, 1563 flow [2025-02-08 08:12:40,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:12:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 08:12:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-02-08 08:12:40,052 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-02-08 08:12:40,052 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 885 flow. Second operand 11 states and 168 transitions. [2025-02-08 08:12:40,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 123 transitions, 1563 flow [2025-02-08 08:12:40,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 1129 flow, removed 198 selfloop flow, removed 14 redundant places. [2025-02-08 08:12:40,100 INFO L231 Difference]: Finished difference. Result has 99 places, 71 transitions, 650 flow [2025-02-08 08:12:40,100 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=650, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2025-02-08 08:12:40,100 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2025-02-08 08:12:40,100 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 650 flow [2025-02-08 08:12:40,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:40,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:40,101 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:40,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 08:12:40,305 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 [2025-02-08 08:12:40,305 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:40,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:40,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2024791207, now seen corresponding path program 2 times [2025-02-08 08:12:40,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:40,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642166765] [2025-02-08 08:12:40,306 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:12:40,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:40,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:40,310 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:40,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 08:12:40,344 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:12:40,351 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:12:40,352 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:12:40,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:40,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:12:40,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:40,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:40,415 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:40,415 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:40,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642166765] [2025-02-08 08:12:40,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642166765] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:40,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:40,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 08:12:40,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123892346] [2025-02-08 08:12:40,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:40,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:12:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:40,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:12:40,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:12:40,417 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:40,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 650 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:40,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:40,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:40,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:40,712 INFO L124 PetriNetUnfolderBase]: 877/1664 cut-off events. [2025-02-08 08:12:40,713 INFO L125 PetriNetUnfolderBase]: For 18541/18541 co-relation queries the response was YES. [2025-02-08 08:12:40,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7162 conditions, 1664 events. 877/1664 cut-off events. For 18541/18541 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9044 event pairs, 224 based on Foata normal form. 27/1687 useless extension candidates. Maximal degree in co-relation 7120. Up to 780 conditions per place. [2025-02-08 08:12:40,720 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 94 selfloop transitions, 22 changer transitions 27/147 dead transitions. [2025-02-08 08:12:40,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 147 transitions, 1586 flow [2025-02-08 08:12:40,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 08:12:40,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 08:12:40,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 206 transitions. [2025-02-08 08:12:40,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5464190981432361 [2025-02-08 08:12:40,722 INFO L175 Difference]: Start difference. First operand has 99 places, 71 transitions, 650 flow. Second operand 13 states and 206 transitions. [2025-02-08 08:12:40,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 147 transitions, 1586 flow [2025-02-08 08:12:40,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 1465 flow, removed 48 selfloop flow, removed 8 redundant places. [2025-02-08 08:12:40,739 INFO L231 Difference]: Finished difference. Result has 107 places, 77 transitions, 774 flow [2025-02-08 08:12:40,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=774, PETRI_PLACES=107, PETRI_TRANSITIONS=77} [2025-02-08 08:12:40,740 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2025-02-08 08:12:40,741 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 77 transitions, 774 flow [2025-02-08 08:12:40,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:40,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:40,741 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:40,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 08:12:40,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:40,942 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:40,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:40,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1821363433, now seen corresponding path program 3 times [2025-02-08 08:12:40,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:40,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977090310] [2025-02-08 08:12:40,943 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:12:40,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:40,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:40,945 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:40,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 08:12:40,991 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:12:40,998 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:12:40,998 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 08:12:40,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:40,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:12:41,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:41,100 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:41,100 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:41,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977090310] [2025-02-08 08:12:41,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977090310] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:41,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:41,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 08:12:41,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782645962] [2025-02-08 08:12:41,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:41,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:12:41,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:41,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:12:41,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:12:41,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:41,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 77 transitions, 774 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:41,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:41,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:41,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:41,438 INFO L124 PetriNetUnfolderBase]: 832/1602 cut-off events. [2025-02-08 08:12:41,439 INFO L125 PetriNetUnfolderBase]: For 22340/22340 co-relation queries the response was YES. [2025-02-08 08:12:41,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7224 conditions, 1602 events. 832/1602 cut-off events. For 22340/22340 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8724 event pairs, 258 based on Foata normal form. 45/1643 useless extension candidates. Maximal degree in co-relation 7178. Up to 789 conditions per place. [2025-02-08 08:12:41,446 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 83 selfloop transitions, 22 changer transitions 31/140 dead transitions. [2025-02-08 08:12:41,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 140 transitions, 1665 flow [2025-02-08 08:12:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:12:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 08:12:41,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2025-02-08 08:12:41,447 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2025-02-08 08:12:41,447 INFO L175 Difference]: Start difference. First operand has 107 places, 77 transitions, 774 flow. Second operand 11 states and 174 transitions. [2025-02-08 08:12:41,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 140 transitions, 1665 flow [2025-02-08 08:12:41,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 140 transitions, 1443 flow, removed 91 selfloop flow, removed 9 redundant places. [2025-02-08 08:12:41,472 INFO L231 Difference]: Finished difference. Result has 110 places, 80 transitions, 764 flow [2025-02-08 08:12:41,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=764, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2025-02-08 08:12:41,473 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2025-02-08 08:12:41,474 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 764 flow [2025-02-08 08:12:41,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:41,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:41,474 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:41,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 08:12:41,675 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 [2025-02-08 08:12:41,676 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:41,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:41,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1676444127, now seen corresponding path program 4 times [2025-02-08 08:12:41,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:41,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116311642] [2025-02-08 08:12:41,676 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:12:41,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:41,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:41,683 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:41,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 08:12:41,718 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-08 08:12:41,726 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:12:41,726 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:12:41,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:41,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:12:41,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:41,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:12:41,792 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:41,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116311642] [2025-02-08 08:12:41,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116311642] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:12:41,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:12:41,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 08:12:41,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981545164] [2025-02-08 08:12:41,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:12:41,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:12:41,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:41,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:12:41,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:12:41,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:41,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 80 transitions, 764 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:41,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:41,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:41,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:42,078 INFO L124 PetriNetUnfolderBase]: 805/1544 cut-off events. [2025-02-08 08:12:42,079 INFO L125 PetriNetUnfolderBase]: For 19497/19497 co-relation queries the response was YES. [2025-02-08 08:12:42,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6640 conditions, 1544 events. 805/1544 cut-off events. For 19497/19497 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8332 event pairs, 311 based on Foata normal form. 27/1567 useless extension candidates. Maximal degree in co-relation 6593. Up to 1029 conditions per place. [2025-02-08 08:12:42,089 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 87 selfloop transitions, 16 changer transitions 31/138 dead transitions. [2025-02-08 08:12:42,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 138 transitions, 1504 flow [2025-02-08 08:12:42,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:12:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 08:12:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-02-08 08:12:42,092 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-02-08 08:12:42,093 INFO L175 Difference]: Start difference. First operand has 110 places, 80 transitions, 764 flow. Second operand 11 states and 168 transitions. [2025-02-08 08:12:42,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 138 transitions, 1504 flow [2025-02-08 08:12:42,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 138 transitions, 1425 flow, removed 24 selfloop flow, removed 6 redundant places. [2025-02-08 08:12:42,114 INFO L231 Difference]: Finished difference. Result has 116 places, 84 transitions, 806 flow [2025-02-08 08:12:42,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=806, PETRI_PLACES=116, PETRI_TRANSITIONS=84} [2025-02-08 08:12:42,114 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2025-02-08 08:12:42,115 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 84 transitions, 806 flow [2025-02-08 08:12:42,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:42,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:42,115 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:42,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 08:12:42,319 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 [2025-02-08 08:12:42,320 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:42,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash -122195739, now seen corresponding path program 1 times [2025-02-08 08:12:42,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:42,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485050882] [2025-02-08 08:12:42,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:12:42,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:42,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:42,325 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:42,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 08:12:42,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 08:12:42,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 08:12:42,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:12:42,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:42,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:12:42,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:42,426 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:42,598 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:42,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485050882] [2025-02-08 08:12:42,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485050882] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:42,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:12:42,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2025-02-08 08:12:42,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062929143] [2025-02-08 08:12:42,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:42,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 08:12:42,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:42,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 08:12:42,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2025-02-08 08:12:42,601 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:42,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 84 transitions, 806 flow. Second operand has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:42,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:42,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:42,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:43,624 INFO L124 PetriNetUnfolderBase]: 1219/2252 cut-off events. [2025-02-08 08:12:43,624 INFO L125 PetriNetUnfolderBase]: For 37881/37881 co-relation queries the response was YES. [2025-02-08 08:12:43,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10735 conditions, 2252 events. 1219/2252 cut-off events. For 37881/37881 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11703 event pairs, 66 based on Foata normal form. 54/2302 useless extension candidates. Maximal degree in co-relation 10685. Up to 320 conditions per place. [2025-02-08 08:12:43,662 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 98 selfloop transitions, 73 changer transitions 75/250 dead transitions. [2025-02-08 08:12:43,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 250 transitions, 2907 flow [2025-02-08 08:12:43,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 08:12:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-08 08:12:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 399 transitions. [2025-02-08 08:12:43,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5291777188328912 [2025-02-08 08:12:43,665 INFO L175 Difference]: Start difference. First operand has 116 places, 84 transitions, 806 flow. Second operand 26 states and 399 transitions. [2025-02-08 08:12:43,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 250 transitions, 2907 flow [2025-02-08 08:12:43,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 250 transitions, 2765 flow, removed 59 selfloop flow, removed 9 redundant places. [2025-02-08 08:12:43,696 INFO L231 Difference]: Finished difference. Result has 145 places, 108 transitions, 1432 flow [2025-02-08 08:12:43,696 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1432, PETRI_PLACES=145, PETRI_TRANSITIONS=108} [2025-02-08 08:12:43,696 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2025-02-08 08:12:43,697 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 108 transitions, 1432 flow [2025-02-08 08:12:43,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:43,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:43,697 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:43,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 08:12:43,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:43,898 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:43,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:43,898 INFO L85 PathProgramCache]: Analyzing trace with hash -176524877, now seen corresponding path program 2 times [2025-02-08 08:12:43,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:43,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217006720] [2025-02-08 08:12:43,898 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:12:43,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:43,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:43,901 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:43,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 08:12:43,940 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 08:12:43,956 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 08:12:43,956 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:12:43,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:43,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:12:43,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:12:44,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:12:44,346 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:44,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217006720] [2025-02-08 08:12:44,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217006720] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:44,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:12:44,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2025-02-08 08:12:44,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57945660] [2025-02-08 08:12:44,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:44,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:12:44,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:44,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:12:44,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2025-02-08 08:12:44,356 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:44,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 108 transitions, 1432 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:44,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:44,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:44,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:45,820 INFO L124 PetriNetUnfolderBase]: 1651/3157 cut-off events. [2025-02-08 08:12:45,821 INFO L125 PetriNetUnfolderBase]: For 114949/114949 co-relation queries the response was YES. [2025-02-08 08:12:45,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19713 conditions, 3157 events. 1651/3157 cut-off events. For 114949/114949 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18108 event pairs, 292 based on Foata normal form. 81/3234 useless extension candidates. Maximal degree in co-relation 19651. Up to 1039 conditions per place. [2025-02-08 08:12:45,837 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 157 selfloop transitions, 74 changer transitions 101/336 dead transitions. [2025-02-08 08:12:45,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 336 transitions, 5264 flow [2025-02-08 08:12:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-08 08:12:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2025-02-08 08:12:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 530 transitions. [2025-02-08 08:12:45,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5221674876847291 [2025-02-08 08:12:45,838 INFO L175 Difference]: Start difference. First operand has 145 places, 108 transitions, 1432 flow. Second operand 35 states and 530 transitions. [2025-02-08 08:12:45,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 336 transitions, 5264 flow [2025-02-08 08:12:45,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 336 transitions, 4449 flow, removed 375 selfloop flow, removed 18 redundant places. [2025-02-08 08:12:45,927 INFO L231 Difference]: Finished difference. Result has 176 places, 140 transitions, 2028 flow [2025-02-08 08:12:45,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2028, PETRI_PLACES=176, PETRI_TRANSITIONS=140} [2025-02-08 08:12:45,928 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2025-02-08 08:12:45,928 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 140 transitions, 2028 flow [2025-02-08 08:12:45,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:45,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:45,928 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:45,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 08:12:46,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:46,133 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:46,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:46,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1991630797, now seen corresponding path program 3 times [2025-02-08 08:12:46,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:46,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683998751] [2025-02-08 08:12:46,135 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:12:46,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:46,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:46,137 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:46,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 08:12:46,210 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 3 equivalence classes. [2025-02-08 08:12:46,222 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 08:12:46,222 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 08:12:46,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:46,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:12:46,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:12:46,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:12:46,566 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:46,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683998751] [2025-02-08 08:12:46,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683998751] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:46,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:12:46,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2025-02-08 08:12:46,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107043756] [2025-02-08 08:12:46,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:46,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:12:46,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:46,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:12:46,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2025-02-08 08:12:46,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:46,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 140 transitions, 2028 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:46,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:46,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:46,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:48,534 INFO L124 PetriNetUnfolderBase]: 2119/4081 cut-off events. [2025-02-08 08:12:48,534 INFO L125 PetriNetUnfolderBase]: For 242362/242362 co-relation queries the response was YES. [2025-02-08 08:12:48,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30530 conditions, 4081 events. 2119/4081 cut-off events. For 242362/242362 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 24231 event pairs, 134 based on Foata normal form. 99/4176 useless extension candidates. Maximal degree in co-relation 30458. Up to 681 conditions per place. [2025-02-08 08:12:48,561 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 172 selfloop transitions, 123 changer transitions 93/392 dead transitions. [2025-02-08 08:12:48,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 392 transitions, 7321 flow [2025-02-08 08:12:48,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-02-08 08:12:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2025-02-08 08:12:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 602 transitions. [2025-02-08 08:12:48,564 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5322723253757736 [2025-02-08 08:12:48,565 INFO L175 Difference]: Start difference. First operand has 176 places, 140 transitions, 2028 flow. Second operand 39 states and 602 transitions. [2025-02-08 08:12:48,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 392 transitions, 7321 flow [2025-02-08 08:12:48,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 392 transitions, 5530 flow, removed 873 selfloop flow, removed 18 redundant places. [2025-02-08 08:12:48,746 INFO L231 Difference]: Finished difference. Result has 208 places, 173 transitions, 2976 flow [2025-02-08 08:12:48,747 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2976, PETRI_PLACES=208, PETRI_TRANSITIONS=173} [2025-02-08 08:12:48,748 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2025-02-08 08:12:48,748 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 173 transitions, 2976 flow [2025-02-08 08:12:48,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:48,748 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:48,748 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:48,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 08:12:48,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:48,953 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:48,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:48,954 INFO L85 PathProgramCache]: Analyzing trace with hash 533326391, now seen corresponding path program 4 times [2025-02-08 08:12:48,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:48,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605450732] [2025-02-08 08:12:48,954 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:12:48,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:48,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:48,956 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:48,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 08:12:48,991 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-02-08 08:12:49,000 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 08:12:49,001 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:12:49,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:49,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:12:49,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:49,078 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:12:49,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:12:49,358 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:49,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605450732] [2025-02-08 08:12:49,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605450732] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:49,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:12:49,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2025-02-08 08:12:49,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141731848] [2025-02-08 08:12:49,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:49,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:12:49,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:49,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:12:49,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-02-08 08:12:49,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:49,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 173 transitions, 2976 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:49,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:49,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:49,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:51,515 INFO L124 PetriNetUnfolderBase]: 2137/4122 cut-off events. [2025-02-08 08:12:51,515 INFO L125 PetriNetUnfolderBase]: For 233411/233411 co-relation queries the response was YES. [2025-02-08 08:12:51,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29250 conditions, 4122 events. 2137/4122 cut-off events. For 233411/233411 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 24023 event pairs, 112 based on Foata normal form. 153/4271 useless extension candidates. Maximal degree in co-relation 29165. Up to 702 conditions per place. [2025-02-08 08:12:51,541 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 144 selfloop transitions, 144 changer transitions 133/425 dead transitions. [2025-02-08 08:12:51,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 425 transitions, 7992 flow [2025-02-08 08:12:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-08 08:12:51,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2025-02-08 08:12:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 611 transitions. [2025-02-08 08:12:51,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267241379310345 [2025-02-08 08:12:51,546 INFO L175 Difference]: Start difference. First operand has 208 places, 173 transitions, 2976 flow. Second operand 40 states and 611 transitions. [2025-02-08 08:12:51,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 425 transitions, 7992 flow [2025-02-08 08:12:51,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 425 transitions, 6423 flow, removed 758 selfloop flow, removed 20 redundant places. [2025-02-08 08:12:51,994 INFO L231 Difference]: Finished difference. Result has 241 places, 193 transitions, 3328 flow [2025-02-08 08:12:51,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3328, PETRI_PLACES=241, PETRI_TRANSITIONS=193} [2025-02-08 08:12:51,996 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2025-02-08 08:12:51,996 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 193 transitions, 3328 flow [2025-02-08 08:12:51,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:51,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:51,997 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:52,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 08:12:52,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:52,197 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:52,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:52,198 INFO L85 PathProgramCache]: Analyzing trace with hash 194122896, now seen corresponding path program 5 times [2025-02-08 08:12:52,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:52,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246156970] [2025-02-08 08:12:52,198 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:12:52,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:52,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:52,200 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:52,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 08:12:52,238 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 4 equivalence classes. [2025-02-08 08:12:52,252 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:12:52,252 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-08 08:12:52,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:52,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 08:12:52,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:52,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:52,762 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:52,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246156970] [2025-02-08 08:12:52,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246156970] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:52,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:12:52,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2025-02-08 08:12:52,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513831590] [2025-02-08 08:12:52,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:52,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 08:12:52,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:52,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 08:12:52,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2025-02-08 08:12:52,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:52,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 193 transitions, 3328 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:52,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:52,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:52,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:54,864 INFO L124 PetriNetUnfolderBase]: 2263/4436 cut-off events. [2025-02-08 08:12:54,864 INFO L125 PetriNetUnfolderBase]: For 327500/327500 co-relation queries the response was YES. [2025-02-08 08:12:54,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33207 conditions, 4436 events. 2263/4436 cut-off events. For 327500/327500 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 25941 event pairs, 953 based on Foata normal form. 117/4549 useless extension candidates. Maximal degree in co-relation 33109. Up to 3024 conditions per place. [2025-02-08 08:12:54,897 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 241 selfloop transitions, 33 changer transitions 133/411 dead transitions. [2025-02-08 08:12:54,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 411 transitions, 8674 flow [2025-02-08 08:12:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 08:12:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-08 08:12:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 552 transitions. [2025-02-08 08:12:54,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5144454799627214 [2025-02-08 08:12:54,899 INFO L175 Difference]: Start difference. First operand has 241 places, 193 transitions, 3328 flow. Second operand 37 states and 552 transitions. [2025-02-08 08:12:54,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 411 transitions, 8674 flow [2025-02-08 08:12:55,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 411 transitions, 7542 flow, removed 503 selfloop flow, removed 29 redundant places. [2025-02-08 08:12:55,239 INFO L231 Difference]: Finished difference. Result has 267 places, 209 transitions, 3513 flow [2025-02-08 08:12:55,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2616, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3513, PETRI_PLACES=267, PETRI_TRANSITIONS=209} [2025-02-08 08:12:55,240 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2025-02-08 08:12:55,240 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 209 transitions, 3513 flow [2025-02-08 08:12:55,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:55,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:55,240 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:55,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 08:12:55,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:55,441 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:55,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:55,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1251672112, now seen corresponding path program 6 times [2025-02-08 08:12:55,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:55,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062108287] [2025-02-08 08:12:55,443 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:12:55,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:55,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:55,445 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:55,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 08:12:55,480 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 5 equivalence classes. [2025-02-08 08:12:55,496 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:12:55,496 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-08 08:12:55,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:55,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 08:12:55,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:55,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:56,018 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:56,018 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:56,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062108287] [2025-02-08 08:12:56,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062108287] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:56,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:12:56,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2025-02-08 08:12:56,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411496641] [2025-02-08 08:12:56,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:56,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 08:12:56,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:56,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 08:12:56,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2025-02-08 08:12:56,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:56,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 209 transitions, 3513 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:12:56,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:56,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:56,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand