./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:39:04,626 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:39:04,663 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:39:04,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:39:04,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:39:04,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:39:04,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:39:04,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:39:04,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:39:04,693 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:39:04,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:39:04,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:39:04,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:39:04,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:39:04,695 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:39:04,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:39:04,695 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:39:04,695 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:39:04,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:39:04,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:39:04,695 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:39:04,696 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:39:04,696 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:39:04,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:39:04,696 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:39:04,696 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:39:04,696 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:39:04,696 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:39:04,696 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:39:04,696 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:39:04,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:39:04,697 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:39:04,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:39:04,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:39:04,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:39:04,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:39:04,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:39:04,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:39:04,698 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:39:04,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:39:04,698 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:39:04,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:39:04,698 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 -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2025-02-08 08:39:04,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:39:04,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:39:04,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:39:04,927 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:39:04,927 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:39:04,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2025-02-08 08:39:06,150 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e782cd2c7/7bcd7a6ee8f44c62808cb10d8a54103b/FLAG1c1ee5f2a [2025-02-08 08:39:06,432 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:39:06,436 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2025-02-08 08:39:06,454 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e782cd2c7/7bcd7a6ee8f44c62808cb10d8a54103b/FLAG1c1ee5f2a [2025-02-08 08:39:06,473 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e782cd2c7/7bcd7a6ee8f44c62808cb10d8a54103b [2025-02-08 08:39:06,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:39:06,475 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:39:06,476 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:39:06,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:39:06,480 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:39:06,481 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448633cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06, skipping insertion in model container [2025-02-08 08:39:06,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:39:06,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:39:06,625 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:39:06,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:39:06,658 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:39:06,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06 WrapperNode [2025-02-08 08:39:06,658 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:39:06,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:39:06,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:39:06,660 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:39:06,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,671 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,684 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2025-02-08 08:39:06,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:39:06,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:39:06,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:39:06,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:39:06,692 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,709 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 08:39:06,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,714 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,716 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:39:06,717 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:39:06,717 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:39:06,717 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:39:06,717 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (1/1) ... [2025-02-08 08:39:06,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:39:06,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:39:06,741 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 08:39:06,743 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 08:39:06,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:39:06,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:39:06,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:39:06,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:39:06,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:39:06,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 08:39:06,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 08:39:06,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 08:39:06,762 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 08:39:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:39:06,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:39:06,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:39:06,763 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 08:39:06,821 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:39:06,822 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:39:07,026 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:39:07,026 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:39:07,165 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:39:07,166 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:39:07,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:39:07 BoogieIcfgContainer [2025-02-08 08:39:07,166 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:39:07,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:39:07,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:39:07,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:39:07,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:39:06" (1/3) ... [2025-02-08 08:39:07,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387cb019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:39:07, skipping insertion in model container [2025-02-08 08:39:07,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:39:06" (2/3) ... [2025-02-08 08:39:07,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387cb019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:39:07, skipping insertion in model container [2025-02-08 08:39:07,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:39:07" (3/3) ... [2025-02-08 08:39:07,180 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2025-02-08 08:39:07,197 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:39:07,198 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-determinism.wvr.c that has 5 procedures, 39 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2025-02-08 08:39:07,201 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:39:07,273 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 08:39:07,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2025-02-08 08:39:07,374 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2025-02-08 08:39:07,377 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:39:07,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-08 08:39:07,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2025-02-08 08:39:07,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2025-02-08 08:39:07,390 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:39:07,402 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;@2fe91792, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:39:07,402 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-08 08:39:07,413 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:39:07,416 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-02-08 08:39:07,420 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 08:39:07,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:07,421 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:07,421 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:07,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:07,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2131589975, now seen corresponding path program 1 times [2025-02-08 08:39:07,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:07,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724091128] [2025-02-08 08:39:07,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:39:07,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:07,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 08:39:07,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 08:39:07,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:39:07,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:07,702 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 08:39:07,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:07,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724091128] [2025-02-08 08:39:07,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724091128] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:39:07,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:39:07,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:39:07,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131767569] [2025-02-08 08:39:07,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:39:07,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:39:07,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:07,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:39:07,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:39:07,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-02-08 08:39:07,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 08:39:07,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:07,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-02-08 08:39:07,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:08,266 INFO L124 PetriNetUnfolderBase]: 5145/6893 cut-off events. [2025-02-08 08:39:08,266 INFO L125 PetriNetUnfolderBase]: For 482/482 co-relation queries the response was YES. [2025-02-08 08:39:08,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14124 conditions, 6893 events. 5145/6893 cut-off events. For 482/482 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 30667 event pairs, 1020 based on Foata normal form. 2/6281 useless extension candidates. Maximal degree in co-relation 12502. Up to 5288 conditions per place. [2025-02-08 08:39:08,302 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 51 selfloop transitions, 5 changer transitions 1/60 dead transitions. [2025-02-08 08:39:08,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 279 flow [2025-02-08 08:39:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:39:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:39:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2025-02-08 08:39:08,312 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6587301587301587 [2025-02-08 08:39:08,313 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 83 transitions. [2025-02-08 08:39:08,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 279 flow [2025-02-08 08:39:08,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 60 transitions, 249 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-08 08:39:08,328 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 111 flow [2025-02-08 08:39:08,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2025-02-08 08:39:08,332 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2025-02-08 08:39:08,334 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 111 flow [2025-02-08 08:39:08,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 08:39:08,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:08,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:08,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:39:08,335 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:08,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1522219111, now seen corresponding path program 1 times [2025-02-08 08:39:08,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:08,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855835831] [2025-02-08 08:39:08,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:39:08,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:08,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 08:39:08,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:08,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:39:08,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:08,464 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 08:39:08,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:08,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855835831] [2025-02-08 08:39:08,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855835831] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:39:08,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:39:08,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:39:08,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134976469] [2025-02-08 08:39:08,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:39:08,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:39:08,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:08,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:39:08,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:39:08,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-08 08:39:08,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 08:39:08,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:08,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-08 08:39:08,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:09,307 INFO L124 PetriNetUnfolderBase]: 11897/15400 cut-off events. [2025-02-08 08:39:09,309 INFO L125 PetriNetUnfolderBase]: For 1929/1929 co-relation queries the response was YES. [2025-02-08 08:39:09,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35071 conditions, 15400 events. 11897/15400 cut-off events. For 1929/1929 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 72807 event pairs, 3629 based on Foata normal form. 0/13196 useless extension candidates. Maximal degree in co-relation 5548. Up to 7867 conditions per place. [2025-02-08 08:39:09,378 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 101 selfloop transitions, 10 changer transitions 0/113 dead transitions. [2025-02-08 08:39:09,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 113 transitions, 540 flow [2025-02-08 08:39:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:39:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:39:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-02-08 08:39:09,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2025-02-08 08:39:09,381 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 111 flow. Second operand 5 states and 133 transitions. [2025-02-08 08:39:09,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 113 transitions, 540 flow [2025-02-08 08:39:09,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 113 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:39:09,385 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 169 flow [2025-02-08 08:39:09,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2025-02-08 08:39:09,386 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2025-02-08 08:39:09,386 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 169 flow [2025-02-08 08:39:09,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 08:39:09,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:09,386 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:09,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:39:09,386 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:09,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:09,387 INFO L85 PathProgramCache]: Analyzing trace with hash 199881933, now seen corresponding path program 2 times [2025-02-08 08:39:09,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:09,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676291466] [2025-02-08 08:39:09,388 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:39:09,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:09,399 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:39:09,411 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:09,414 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:39:09,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:09,540 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 08:39:09,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:09,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676291466] [2025-02-08 08:39:09,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676291466] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:39:09,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397436893] [2025-02-08 08:39:09,540 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:39:09,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:39:09,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:39:09,547 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 08:39:09,548 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 08:39:09,589 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:39:09,607 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:09,607 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:39:09,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:09,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:39:09,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:39:09,652 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 08:39:09,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:39:09,676 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 08:39:09,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397436893] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:39:09,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:39:09,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2025-02-08 08:39:09,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382264980] [2025-02-08 08:39:09,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:39:09,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 08:39:09,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:09,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 08:39:09,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-08 08:39:09,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-08 08:39:09,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 169 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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 08:39:09,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:09,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-08 08:39:09,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:10,960 INFO L124 PetriNetUnfolderBase]: 16200/21067 cut-off events. [2025-02-08 08:39:10,960 INFO L125 PetriNetUnfolderBase]: For 7122/7122 co-relation queries the response was YES. [2025-02-08 08:39:10,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54783 conditions, 21067 events. 16200/21067 cut-off events. For 7122/7122 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 106158 event pairs, 1341 based on Foata normal form. 346/20581 useless extension candidates. Maximal degree in co-relation 27418. Up to 4494 conditions per place. [2025-02-08 08:39:11,053 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 260 selfloop transitions, 36 changer transitions 0/298 dead transitions. [2025-02-08 08:39:11,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 298 transitions, 1478 flow [2025-02-08 08:39:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 08:39:11,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-08 08:39:11,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 366 transitions. [2025-02-08 08:39:11,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2025-02-08 08:39:11,056 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 169 flow. Second operand 14 states and 366 transitions. [2025-02-08 08:39:11,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 298 transitions, 1478 flow [2025-02-08 08:39:11,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 298 transitions, 1478 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 08:39:11,064 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 405 flow [2025-02-08 08:39:11,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=405, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2025-02-08 08:39:11,064 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2025-02-08 08:39:11,064 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 405 flow [2025-02-08 08:39:11,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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 08:39:11,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:11,065 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:11,071 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 08:39:11,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:39:11,269 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:11,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:11,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2107482899, now seen corresponding path program 3 times [2025-02-08 08:39:11,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:11,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417393681] [2025-02-08 08:39:11,270 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:39:11,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:11,281 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:39:11,291 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:11,291 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:39:11,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:11,367 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 08:39:11,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:11,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417393681] [2025-02-08 08:39:11,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417393681] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:39:11,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:39:11,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:39:11,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180029473] [2025-02-08 08:39:11,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:39:11,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:39:11,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:11,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:39:11,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:39:11,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-08 08:39:11,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 405 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 08:39:11,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:11,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-08 08:39:11,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:12,765 INFO L124 PetriNetUnfolderBase]: 22784/29827 cut-off events. [2025-02-08 08:39:12,765 INFO L125 PetriNetUnfolderBase]: For 36461/36461 co-relation queries the response was YES. [2025-02-08 08:39:12,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91235 conditions, 29827 events. 22784/29827 cut-off events. For 36461/36461 co-relation queries the response was YES. Maximal size of possible extension queue 1109. Compared 154455 event pairs, 6160 based on Foata normal form. 76/28725 useless extension candidates. Maximal degree in co-relation 82664. Up to 14037 conditions per place. [2025-02-08 08:39:12,919 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 145 selfloop transitions, 19 changer transitions 0/166 dead transitions. [2025-02-08 08:39:12,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 166 transitions, 1106 flow [2025-02-08 08:39:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:39:12,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:39:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2025-02-08 08:39:12,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2025-02-08 08:39:12,920 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 405 flow. Second operand 5 states and 132 transitions. [2025-02-08 08:39:12,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 166 transitions, 1106 flow [2025-02-08 08:39:13,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 166 transitions, 1059 flow, removed 13 selfloop flow, removed 1 redundant places. [2025-02-08 08:39:13,146 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 504 flow [2025-02-08 08:39:13,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=504, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2025-02-08 08:39:13,147 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2025-02-08 08:39:13,147 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 504 flow [2025-02-08 08:39:13,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 08:39:13,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:13,148 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:13,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:39:13,148 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:13,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:13,148 INFO L85 PathProgramCache]: Analyzing trace with hash 176172025, now seen corresponding path program 1 times [2025-02-08 08:39:13,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:13,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817506499] [2025-02-08 08:39:13,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:39:13,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:13,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 08:39:13,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:13,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:39:13,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:13,195 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 08:39:13,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817506499] [2025-02-08 08:39:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817506499] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:39:13,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:39:13,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:39:13,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715392910] [2025-02-08 08:39:13,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:39:13,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:39:13,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:13,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:39:13,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:39:13,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-02-08 08:39:13,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 08:39:13,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:13,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-02-08 08:39:13,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:14,099 INFO L124 PetriNetUnfolderBase]: 13174/17583 cut-off events. [2025-02-08 08:39:14,100 INFO L125 PetriNetUnfolderBase]: For 33083/33316 co-relation queries the response was YES. [2025-02-08 08:39:14,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55462 conditions, 17583 events. 13174/17583 cut-off events. For 33083/33316 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 88664 event pairs, 4104 based on Foata normal form. 567/17361 useless extension candidates. Maximal degree in co-relation 45420. Up to 12915 conditions per place. [2025-02-08 08:39:14,212 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 90 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2025-02-08 08:39:14,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 698 flow [2025-02-08 08:39:14,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:39:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:39:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2025-02-08 08:39:14,214 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2025-02-08 08:39:14,214 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 504 flow. Second operand 3 states and 82 transitions. [2025-02-08 08:39:14,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 97 transitions, 698 flow [2025-02-08 08:39:14,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 97 transitions, 675 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-08 08:39:14,265 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 414 flow [2025-02-08 08:39:14,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=414, PETRI_PLACES=69, PETRI_TRANSITIONS=73} [2025-02-08 08:39:14,266 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2025-02-08 08:39:14,266 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 414 flow [2025-02-08 08:39:14,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 08:39:14,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:14,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:14,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 08:39:14,267 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:14,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:14,267 INFO L85 PathProgramCache]: Analyzing trace with hash -908667079, now seen corresponding path program 1 times [2025-02-08 08:39:14,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:14,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102467637] [2025-02-08 08:39:14,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:39:14,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:14,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 08:39:14,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:14,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:39:14,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:14,325 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 08:39:14,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:14,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102467637] [2025-02-08 08:39:14,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102467637] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:39:14,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:39:14,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:39:14,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658511149] [2025-02-08 08:39:14,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:39:14,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:39:14,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:14,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:39:14,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:39:14,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-08 08:39:14,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 08:39:14,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:14,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-08 08:39:14,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:15,397 INFO L124 PetriNetUnfolderBase]: 16752/22331 cut-off events. [2025-02-08 08:39:15,397 INFO L125 PetriNetUnfolderBase]: For 36089/36191 co-relation queries the response was YES. [2025-02-08 08:39:15,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71316 conditions, 22331 events. 16752/22331 cut-off events. For 36089/36191 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 116654 event pairs, 5823 based on Foata normal form. 0/20372 useless extension candidates. Maximal degree in co-relation 61770. Up to 13039 conditions per place. [2025-02-08 08:39:15,514 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 118 selfloop transitions, 14 changer transitions 0/135 dead transitions. [2025-02-08 08:39:15,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 135 transitions, 879 flow [2025-02-08 08:39:15,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:39:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:39:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-02-08 08:39:15,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2025-02-08 08:39:15,516 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 414 flow. Second operand 5 states and 131 transitions. [2025-02-08 08:39:15,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 135 transitions, 879 flow [2025-02-08 08:39:15,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 135 transitions, 876 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:39:15,598 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 457 flow [2025-02-08 08:39:15,599 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=457, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2025-02-08 08:39:15,599 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2025-02-08 08:39:15,599 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 457 flow [2025-02-08 08:39:15,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 08:39:15,599 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:15,599 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:15,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 08:39:15,600 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:15,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:15,600 INFO L85 PathProgramCache]: Analyzing trace with hash 726086995, now seen corresponding path program 2 times [2025-02-08 08:39:15,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:15,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514420284] [2025-02-08 08:39:15,600 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:39:15,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:15,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-02-08 08:39:15,616 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:15,616 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:39:15,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:15,673 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 08:39:15,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:15,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514420284] [2025-02-08 08:39:15,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514420284] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:39:15,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:39:15,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:39:15,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213709577] [2025-02-08 08:39:15,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:39:15,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:39:15,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:15,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:39:15,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:39:15,681 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-08 08:39:15,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 457 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:39:15,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:15,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-08 08:39:15,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:17,648 INFO L124 PetriNetUnfolderBase]: 35027/45568 cut-off events. [2025-02-08 08:39:17,649 INFO L125 PetriNetUnfolderBase]: For 99138/99623 co-relation queries the response was YES. [2025-02-08 08:39:17,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151058 conditions, 45568 events. 35027/45568 cut-off events. For 99138/99623 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 239660 event pairs, 10407 based on Foata normal form. 0/41742 useless extension candidates. Maximal degree in co-relation 118261. Up to 21857 conditions per place. [2025-02-08 08:39:17,933 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 284 selfloop transitions, 10 changer transitions 0/297 dead transitions. [2025-02-08 08:39:17,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 297 transitions, 2562 flow [2025-02-08 08:39:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:39:17,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 08:39:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2025-02-08 08:39:17,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-08 08:39:17,938 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 457 flow. Second operand 6 states and 156 transitions. [2025-02-08 08:39:17,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 297 transitions, 2562 flow [2025-02-08 08:39:18,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 297 transitions, 2462 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:39:18,052 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 507 flow [2025-02-08 08:39:18,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=507, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2025-02-08 08:39:18,053 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2025-02-08 08:39:18,054 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 507 flow [2025-02-08 08:39:18,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:39:18,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:18,054 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:18,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 08:39:18,056 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:18,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:18,057 INFO L85 PathProgramCache]: Analyzing trace with hash 335296903, now seen corresponding path program 3 times [2025-02-08 08:39:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:18,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191163031] [2025-02-08 08:39:18,059 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:39:18,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:18,072 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:39:18,081 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:18,081 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:39:18,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:18,175 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 08:39:18,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:18,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191163031] [2025-02-08 08:39:18,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191163031] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:39:18,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432163700] [2025-02-08 08:39:18,178 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:39:18,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:39:18,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:39:18,183 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 08:39:18,189 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 08:39:18,217 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:39:18,230 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:18,230 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:39:18,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:18,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:39:18,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:39:18,273 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 08:39:18,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:39:18,295 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 08:39:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432163700] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:39:18,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:39:18,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2025-02-08 08:39:18,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762426533] [2025-02-08 08:39:18,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:39:18,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 08:39:18,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:18,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 08:39:18,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-02-08 08:39:18,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-08 08:39:18,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 507 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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 08:39:18,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:18,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-08 08:39:18,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:22,029 INFO L124 PetriNetUnfolderBase]: 52751/68590 cut-off events. [2025-02-08 08:39:22,030 INFO L125 PetriNetUnfolderBase]: For 168177/168177 co-relation queries the response was YES. [2025-02-08 08:39:22,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259324 conditions, 68590 events. 52751/68590 cut-off events. For 168177/168177 co-relation queries the response was YES. Maximal size of possible extension queue 1841. Compared 373596 event pairs, 11332 based on Foata normal form. 984/67450 useless extension candidates. Maximal degree in co-relation 223384. Up to 26980 conditions per place. [2025-02-08 08:39:22,449 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 223 selfloop transitions, 39 changer transitions 0/263 dead transitions. [2025-02-08 08:39:22,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 263 transitions, 2092 flow [2025-02-08 08:39:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:39:22,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:39:22,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2025-02-08 08:39:22,450 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2025-02-08 08:39:22,450 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 507 flow. Second operand 8 states and 207 transitions. [2025-02-08 08:39:22,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 263 transitions, 2092 flow [2025-02-08 08:39:22,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 263 transitions, 2051 flow, removed 10 selfloop flow, removed 1 redundant places. [2025-02-08 08:39:22,978 INFO L231 Difference]: Finished difference. Result has 92 places, 107 transitions, 835 flow [2025-02-08 08:39:22,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=835, PETRI_PLACES=92, PETRI_TRANSITIONS=107} [2025-02-08 08:39:22,979 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2025-02-08 08:39:22,979 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 107 transitions, 835 flow [2025-02-08 08:39:22,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 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 08:39:22,979 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:22,979 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:22,985 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 08:39:23,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:39:23,180 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:23,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:23,180 INFO L85 PathProgramCache]: Analyzing trace with hash 501463885, now seen corresponding path program 4 times [2025-02-08 08:39:23,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:23,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321499910] [2025-02-08 08:39:23,181 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:39:23,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:23,195 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:39:23,203 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 25 of 26 statements. [2025-02-08 08:39:23,203 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 08:39:23,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:23,255 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 08:39:23,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:23,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321499910] [2025-02-08 08:39:23,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321499910] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:39:23,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591927618] [2025-02-08 08:39:23,256 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:39:23,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:39:23,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:39:23,258 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 08:39:23,265 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 08:39:23,296 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:39:23,307 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 25 of 26 statements. [2025-02-08 08:39:23,308 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 08:39:23,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:23,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:39:23,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:39:23,336 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 08:39:23,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:39:23,356 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 08:39:23,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591927618] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:39:23,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:39:23,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-02-08 08:39:23,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932435422] [2025-02-08 08:39:23,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:39:23,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:39:23,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:23,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:39:23,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:39:23,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-08 08:39:23,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 107 transitions, 835 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 08:39:23,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:23,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-08 08:39:23,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:27,695 INFO L124 PetriNetUnfolderBase]: 48866/64505 cut-off events. [2025-02-08 08:39:27,696 INFO L125 PetriNetUnfolderBase]: For 210079/215594 co-relation queries the response was YES. [2025-02-08 08:39:27,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253885 conditions, 64505 events. 48866/64505 cut-off events. For 210079/215594 co-relation queries the response was YES. Maximal size of possible extension queue 2071. Compared 371295 event pairs, 11860 based on Foata normal form. 2529/66880 useless extension candidates. Maximal degree in co-relation 217728. Up to 24247 conditions per place. [2025-02-08 08:39:28,147 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 271 selfloop transitions, 37 changer transitions 0/312 dead transitions. [2025-02-08 08:39:28,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 312 transitions, 2722 flow [2025-02-08 08:39:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:39:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:39:28,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2025-02-08 08:39:28,151 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6220238095238095 [2025-02-08 08:39:28,151 INFO L175 Difference]: Start difference. First operand has 92 places, 107 transitions, 835 flow. Second operand 8 states and 209 transitions. [2025-02-08 08:39:28,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 312 transitions, 2722 flow [2025-02-08 08:39:28,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 312 transitions, 2646 flow, removed 27 selfloop flow, removed 1 redundant places. [2025-02-08 08:39:28,873 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 1076 flow [2025-02-08 08:39:28,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1076, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2025-02-08 08:39:28,875 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 55 predicate places. [2025-02-08 08:39:28,875 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 1076 flow [2025-02-08 08:39:28,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 08:39:28,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:28,875 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:28,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 08:39:29,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:39:29,080 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:29,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:29,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1000658803, now seen corresponding path program 4 times [2025-02-08 08:39:29,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:29,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124989851] [2025-02-08 08:39:29,081 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:39:29,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:29,085 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:39:29,091 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 25 of 26 statements. [2025-02-08 08:39:29,093 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 08:39:29,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:29,123 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 08:39:29,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:29,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124989851] [2025-02-08 08:39:29,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124989851] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:39:29,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:39:29,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:39:29,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60374722] [2025-02-08 08:39:29,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:39:29,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:39:29,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:29,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:39:29,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:39:29,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-08 08:39:29,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 1076 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 08:39:29,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:29,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-08 08:39:29,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:33,719 INFO L124 PetriNetUnfolderBase]: 59649/77816 cut-off events. [2025-02-08 08:39:33,719 INFO L125 PetriNetUnfolderBase]: For 270075/270075 co-relation queries the response was YES. [2025-02-08 08:39:34,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320899 conditions, 77816 events. 59649/77816 cut-off events. For 270075/270075 co-relation queries the response was YES. Maximal size of possible extension queue 2089. Compared 428038 event pairs, 8818 based on Foata normal form. 172/77988 useless extension candidates. Maximal degree in co-relation 277521. Up to 48485 conditions per place. [2025-02-08 08:39:34,254 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 230 selfloop transitions, 27 changer transitions 0/258 dead transitions. [2025-02-08 08:39:34,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 258 transitions, 2639 flow [2025-02-08 08:39:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:39:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:39:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2025-02-08 08:39:34,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2025-02-08 08:39:34,256 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 1076 flow. Second operand 5 states and 121 transitions. [2025-02-08 08:39:34,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 258 transitions, 2639 flow [2025-02-08 08:39:36,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 258 transitions, 2463 flow, removed 44 selfloop flow, removed 2 redundant places. [2025-02-08 08:39:36,097 INFO L231 Difference]: Finished difference. Result has 106 places, 142 transitions, 1302 flow [2025-02-08 08:39:36,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1302, PETRI_PLACES=106, PETRI_TRANSITIONS=142} [2025-02-08 08:39:36,098 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 60 predicate places. [2025-02-08 08:39:36,098 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 142 transitions, 1302 flow [2025-02-08 08:39:36,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 08:39:36,098 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:36,098 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:36,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 08:39:36,098 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:36,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:36,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1226112961, now seen corresponding path program 5 times [2025-02-08 08:39:36,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:36,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008527568] [2025-02-08 08:39:36,099 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:39:36,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:36,103 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:39:36,106 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:36,106 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:39:36,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:36,137 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 08:39:36,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:36,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008527568] [2025-02-08 08:39:36,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008527568] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:39:36,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819347805] [2025-02-08 08:39:36,137 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:39:36,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:39:36,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:39:36,139 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 08:39:36,143 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 08:39:36,172 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:39:36,186 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:36,186 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:39:36,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:36,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:39:36,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:39:36,201 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 08:39:36,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:39:36,219 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 08:39:36,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819347805] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:39:36,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:39:36,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-02-08 08:39:36,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455587464] [2025-02-08 08:39:36,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:39:36,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:39:36,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:36,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:39:36,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:39:36,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-08 08:39:36,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 142 transitions, 1302 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:39:36,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:36,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-08 08:39:36,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:42,757 INFO L124 PetriNetUnfolderBase]: 71869/94312 cut-off events. [2025-02-08 08:39:42,758 INFO L125 PetriNetUnfolderBase]: For 385054/385054 co-relation queries the response was YES. [2025-02-08 08:39:43,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400891 conditions, 94312 events. 71869/94312 cut-off events. For 385054/385054 co-relation queries the response was YES. Maximal size of possible extension queue 2665. Compared 541642 event pairs, 6468 based on Foata normal form. 684/94996 useless extension candidates. Maximal degree in co-relation 358575. Up to 27824 conditions per place. [2025-02-08 08:39:43,700 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 430 selfloop transitions, 103 changer transitions 2/536 dead transitions. [2025-02-08 08:39:43,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 536 transitions, 5370 flow [2025-02-08 08:39:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:39:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 08:39:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2025-02-08 08:39:43,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2025-02-08 08:39:43,701 INFO L175 Difference]: Start difference. First operand has 106 places, 142 transitions, 1302 flow. Second operand 11 states and 266 transitions. [2025-02-08 08:39:43,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 536 transitions, 5370 flow [2025-02-08 08:39:45,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 536 transitions, 5338 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-02-08 08:39:45,708 INFO L231 Difference]: Finished difference. Result has 119 places, 202 transitions, 2294 flow [2025-02-08 08:39:45,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2294, PETRI_PLACES=119, PETRI_TRANSITIONS=202} [2025-02-08 08:39:45,709 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 73 predicate places. [2025-02-08 08:39:45,709 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 202 transitions, 2294 flow [2025-02-08 08:39:45,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:39:45,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:45,710 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:45,718 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 08:39:45,914 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 08:39:45,914 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:45,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:45,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1205016825, now seen corresponding path program 5 times [2025-02-08 08:39:45,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:45,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221601742] [2025-02-08 08:39:45,914 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:39:45,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:45,921 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:39:45,928 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:45,928 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:39:45,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:45,978 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 08:39:45,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:45,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221601742] [2025-02-08 08:39:45,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221601742] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:39:45,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747474427] [2025-02-08 08:39:45,978 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:39:45,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:39:45,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:39:45,981 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 08:39:45,984 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 08:39:46,016 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:39:46,029 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:46,029 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:39:46,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:46,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:39:46,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:39:46,053 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 08:39:46,053 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:39:46,072 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 08:39:46,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747474427] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:39:46,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:39:46,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-08 08:39:46,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694982224] [2025-02-08 08:39:46,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:39:46,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 08:39:46,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:46,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 08:39:46,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-02-08 08:39:46,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-08 08:39:46,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 202 transitions, 2294 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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 08:39:46,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:46,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-08 08:39:46,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:39:51,821 INFO L124 PetriNetUnfolderBase]: 61173/81876 cut-off events. [2025-02-08 08:39:51,821 INFO L125 PetriNetUnfolderBase]: For 425983/429959 co-relation queries the response was YES. [2025-02-08 08:39:52,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356504 conditions, 81876 events. 61173/81876 cut-off events. For 425983/429959 co-relation queries the response was YES. Maximal size of possible extension queue 2782. Compared 504012 event pairs, 9565 based on Foata normal form. 2194/84008 useless extension candidates. Maximal degree in co-relation 339803. Up to 24186 conditions per place. [2025-02-08 08:39:52,731 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 340 selfloop transitions, 72 changer transitions 0/417 dead transitions. [2025-02-08 08:39:52,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 417 transitions, 4655 flow [2025-02-08 08:39:52,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:39:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:39:52,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2025-02-08 08:39:52,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2025-02-08 08:39:52,732 INFO L175 Difference]: Start difference. First operand has 119 places, 202 transitions, 2294 flow. Second operand 8 states and 204 transitions. [2025-02-08 08:39:52,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 417 transitions, 4655 flow [2025-02-08 08:39:55,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 417 transitions, 4461 flow, removed 76 selfloop flow, removed 1 redundant places. [2025-02-08 08:39:55,366 INFO L231 Difference]: Finished difference. Result has 129 places, 212 transitions, 2548 flow [2025-02-08 08:39:55,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2548, PETRI_PLACES=129, PETRI_TRANSITIONS=212} [2025-02-08 08:39:55,366 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 83 predicate places. [2025-02-08 08:39:55,366 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 212 transitions, 2548 flow [2025-02-08 08:39:55,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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 08:39:55,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:39:55,366 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:39:55,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 08:39:55,567 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 08:39:55,567 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:39:55,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:39:55,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1979184155, now seen corresponding path program 1 times [2025-02-08 08:39:55,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:39:55,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084835326] [2025-02-08 08:39:55,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:39:55,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:39:55,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 08:39:55,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 08:39:55,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:39:55,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:39:55,612 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 08:39:55,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:39:55,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084835326] [2025-02-08 08:39:55,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084835326] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:39:55,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:39:55,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:39:55,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345059000] [2025-02-08 08:39:55,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:39:55,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:39:55,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:39:55,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:39:55,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:39:55,614 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-02-08 08:39:55,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 212 transitions, 2548 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 08:39:55,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:39:55,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-02-08 08:39:55,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand