./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-misc-5.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/parallel-misc-5.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 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:37:35,375 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:37:35,426 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:37:35,429 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:37:35,429 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:37:35,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:37:35,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:37:35,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:37:35,443 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:37:35,443 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:37:35,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:37:35,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:37:35,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:37:35,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:37:35,444 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:37:35,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:37:35,444 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:37:35,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:37:35,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:37:35,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:37:35,444 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:37:35,444 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:37:35,445 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:37:35,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:37:35,445 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:37:35,445 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:37:35,445 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:37:35,445 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:37:35,445 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:37:35,445 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:37:35,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:37:35,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:37:35,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:37:35,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:37:35,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:37:35,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:37:35,446 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:37:35,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:37:35,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:37:35,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:37:35,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:37:35,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:37:35,446 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 -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2025-02-08 08:37:35,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:37:35,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:37:35,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:37:35,668 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:37:35,668 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:37:35,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-02-08 08:37:36,796 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bbaaa3028/335b0b5407944dd0b48b500e0c135dae/FLAG91e012e55 [2025-02-08 08:37:36,997 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:37:36,998 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-02-08 08:37:37,021 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bbaaa3028/335b0b5407944dd0b48b500e0c135dae/FLAG91e012e55 [2025-02-08 08:37:37,370 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bbaaa3028/335b0b5407944dd0b48b500e0c135dae [2025-02-08 08:37:37,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:37:37,377 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:37:37,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:37:37,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:37:37,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:37:37,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63913881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37, skipping insertion in model container [2025-02-08 08:37:37,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,402 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:37:37,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:37:37,535 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:37:37,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:37:37,570 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:37:37,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37 WrapperNode [2025-02-08 08:37:37,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:37:37,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:37:37,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:37:37,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:37:37,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,599 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 131 [2025-02-08 08:37:37,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:37:37,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:37:37,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:37:37,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:37:37,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,610 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,624 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 08:37:37,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,624 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,629 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:37:37,636 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:37:37,637 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:37:37,637 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:37:37,641 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (1/1) ... [2025-02-08 08:37:37,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:37:37,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:37,666 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 08:37:37,669 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 08:37:37,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:37:37,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:37:37,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:37:37,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:37:37,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:37:37,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 08:37:37,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 08:37:37,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:37:37,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:37:37,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:37:37,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:37:37,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:37:37,687 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 08:37:37,756 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:37:37,757 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:37:37,945 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:37:37,946 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:37:38,094 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:37:38,097 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:37:38,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:37:38 BoogieIcfgContainer [2025-02-08 08:37:38,098 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:37:38,099 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:37:38,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:37:38,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:37:38,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:37:37" (1/3) ... [2025-02-08 08:37:38,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e029afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:37:38, skipping insertion in model container [2025-02-08 08:37:38,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:37:37" (2/3) ... [2025-02-08 08:37:38,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e029afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:37:38, skipping insertion in model container [2025-02-08 08:37:38,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:37:38" (3/3) ... [2025-02-08 08:37:38,106 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2025-02-08 08:37:38,116 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:37:38,117 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-5.wvr.c that has 4 procedures, 36 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-08 08:37:38,117 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:37:38,160 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 08:37:38,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 99 flow [2025-02-08 08:37:38,211 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2025-02-08 08:37:38,213 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 08:37:38,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 4/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-02-08 08:37:38,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 39 transitions, 99 flow [2025-02-08 08:37:38,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 88 flow [2025-02-08 08:37:38,229 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:37:38,236 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;@325ac06f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:37:38,236 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-08 08:37:38,246 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:37:38,246 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2025-02-08 08:37:38,246 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 08:37:38,246 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:38,246 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] [2025-02-08 08:37:38,246 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:37:38,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:38,253 INFO L85 PathProgramCache]: Analyzing trace with hash 353954305, now seen corresponding path program 1 times [2025-02-08 08:37:38,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:38,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048490615] [2025-02-08 08:37:38,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:37:38,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:38,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 08:37:38,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 08:37:38,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:37:38,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:38,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048490615] [2025-02-08 08:37:38,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048490615] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:37:38,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:37:38,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:37:38,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375048633] [2025-02-08 08:37:38,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:37:38,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:37:38,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:38,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:37:38,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:37:38,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 08:37:38,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:38,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:38,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 08:37:38,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:39,248 INFO L124 PetriNetUnfolderBase]: 2110/3012 cut-off events. [2025-02-08 08:37:39,248 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2025-02-08 08:37:39,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6230 conditions, 3012 events. 2110/3012 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13800 event pairs, 78 based on Foata normal form. 1/2587 useless extension candidates. Maximal degree in co-relation 6118. Up to 1069 conditions per place. [2025-02-08 08:37:39,266 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 80 selfloop transitions, 8 changer transitions 6/99 dead transitions. [2025-02-08 08:37:39,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 99 transitions, 419 flow [2025-02-08 08:37:39,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:37:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 08:37:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2025-02-08 08:37:39,275 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6452991452991453 [2025-02-08 08:37:39,277 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 88 flow. Second operand 6 states and 151 transitions. [2025-02-08 08:37:39,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 99 transitions, 419 flow [2025-02-08 08:37:39,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 99 transitions, 397 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 08:37:39,287 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 122 flow [2025-02-08 08:37:39,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2025-02-08 08:37:39,291 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2025-02-08 08:37:39,291 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 122 flow [2025-02-08 08:37:39,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:39,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:39,291 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] [2025-02-08 08:37:39,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:37:39,293 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:37:39,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1927629202, now seen corresponding path program 1 times [2025-02-08 08:37:39,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:39,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572138937] [2025-02-08 08:37:39,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:37:39,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:39,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 08:37:39,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 08:37:39,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:37:39,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:39,384 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 08:37:39,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:39,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572138937] [2025-02-08 08:37:39,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572138937] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:37:39,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:37:39,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:37:39,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425077205] [2025-02-08 08:37:39,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:37:39,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:37:39,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:39,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:37:39,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:37:39,387 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 08:37:39,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:39,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:39,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 08:37:39,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:39,598 INFO L124 PetriNetUnfolderBase]: 1991/2919 cut-off events. [2025-02-08 08:37:39,598 INFO L125 PetriNetUnfolderBase]: For 812/812 co-relation queries the response was YES. [2025-02-08 08:37:39,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6825 conditions, 2919 events. 1991/2919 cut-off events. For 812/812 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12947 event pairs, 680 based on Foata normal form. 78/2564 useless extension candidates. Maximal degree in co-relation 5829. Up to 1656 conditions per place. [2025-02-08 08:37:39,608 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 55 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2025-02-08 08:37:39,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 63 transitions, 306 flow [2025-02-08 08:37:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:37:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:37:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2025-02-08 08:37:39,609 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6752136752136753 [2025-02-08 08:37:39,609 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 122 flow. Second operand 3 states and 79 transitions. [2025-02-08 08:37:39,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 63 transitions, 306 flow [2025-02-08 08:37:39,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 306 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 08:37:39,611 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 136 flow [2025-02-08 08:37:39,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2025-02-08 08:37:39,611 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2025-02-08 08:37:39,611 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 136 flow [2025-02-08 08:37:39,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:39,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:39,611 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] [2025-02-08 08:37:39,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:37:39,612 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:37:39,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1197960011, now seen corresponding path program 1 times [2025-02-08 08:37:39,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:39,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633987803] [2025-02-08 08:37:39,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:37:39,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:39,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 08:37:39,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 08:37:39,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:37:39,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:39,679 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 08:37:39,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:39,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633987803] [2025-02-08 08:37:39,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633987803] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:37:39,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:37:39,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:37:39,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346625900] [2025-02-08 08:37:39,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:37:39,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:37:39,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:39,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:37:39,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:37:39,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 08:37:39,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:39,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:39,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 08:37:39,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:39,957 INFO L124 PetriNetUnfolderBase]: 2882/4245 cut-off events. [2025-02-08 08:37:39,957 INFO L125 PetriNetUnfolderBase]: For 1576/1576 co-relation queries the response was YES. [2025-02-08 08:37:39,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10305 conditions, 4245 events. 2882/4245 cut-off events. For 1576/1576 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19768 event pairs, 1041 based on Foata normal form. 86/3646 useless extension candidates. Maximal degree in co-relation 9151. Up to 2663 conditions per place. [2025-02-08 08:37:39,976 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 55 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2025-02-08 08:37:39,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 63 transitions, 328 flow [2025-02-08 08:37:39,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:37:39,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:37:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2025-02-08 08:37:39,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6581196581196581 [2025-02-08 08:37:39,979 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 136 flow. Second operand 3 states and 77 transitions. [2025-02-08 08:37:39,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 63 transitions, 328 flow [2025-02-08 08:37:39,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:37:39,983 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 150 flow [2025-02-08 08:37:39,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2025-02-08 08:37:39,984 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2025-02-08 08:37:39,984 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 150 flow [2025-02-08 08:37:39,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:39,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:39,985 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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 08:37:39,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:37:39,985 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:37:39,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:39,986 INFO L85 PathProgramCache]: Analyzing trace with hash -15963655, now seen corresponding path program 1 times [2025-02-08 08:37:39,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:39,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070621849] [2025-02-08 08:37:39,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:37:39,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:39,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 08:37:40,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 08:37:40,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:37:40,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:37:40,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:40,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070621849] [2025-02-08 08:37:40,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070621849] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:37:40,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:37:40,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:37:40,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670592194] [2025-02-08 08:37:40,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:37:40,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:37:40,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:40,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:37:40,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:37:40,128 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 08:37:40,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:40,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:40,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 08:37:40,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:40,419 INFO L124 PetriNetUnfolderBase]: 2591/3811 cut-off events. [2025-02-08 08:37:40,420 INFO L125 PetriNetUnfolderBase]: For 1783/1783 co-relation queries the response was YES. [2025-02-08 08:37:40,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9599 conditions, 3811 events. 2591/3811 cut-off events. For 1783/1783 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16828 event pairs, 175 based on Foata normal form. 0/3294 useless extension candidates. Maximal degree in co-relation 8423. Up to 1972 conditions per place. [2025-02-08 08:37:40,434 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 60 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2025-02-08 08:37:40,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 70 transitions, 379 flow [2025-02-08 08:37:40,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:37:40,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:37:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-02-08 08:37:40,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-02-08 08:37:40,437 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 150 flow. Second operand 4 states and 91 transitions. [2025-02-08 08:37:40,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 70 transitions, 379 flow [2025-02-08 08:37:40,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:37:40,440 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 175 flow [2025-02-08 08:37:40,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2025-02-08 08:37:40,440 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2025-02-08 08:37:40,441 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 175 flow [2025-02-08 08:37:40,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:40,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:40,441 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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 08:37:40,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:37:40,441 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:37:40,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:40,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1230881597, now seen corresponding path program 2 times [2025-02-08 08:37:40,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:40,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128327376] [2025-02-08 08:37:40,442 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:37:40,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:40,450 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-08 08:37:40,455 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 25 of 29 statements. [2025-02-08 08:37:40,455 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:37:40,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:37:40,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:40,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128327376] [2025-02-08 08:37:40,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128327376] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:37:40,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:37:40,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:37:40,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382830017] [2025-02-08 08:37:40,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:37:40,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:37:40,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:40,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:37:40,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:37:40,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 08:37:40,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:40,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:40,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 08:37:40,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:40,818 INFO L124 PetriNetUnfolderBase]: 3347/4901 cut-off events. [2025-02-08 08:37:40,819 INFO L125 PetriNetUnfolderBase]: For 2738/2738 co-relation queries the response was YES. [2025-02-08 08:37:40,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12630 conditions, 4901 events. 3347/4901 cut-off events. For 2738/2738 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 23275 event pairs, 277 based on Foata normal form. 72/4407 useless extension candidates. Maximal degree in co-relation 11496. Up to 2034 conditions per place. [2025-02-08 08:37:40,835 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 77 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2025-02-08 08:37:40,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 89 transitions, 491 flow [2025-02-08 08:37:40,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:37:40,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:37:40,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2025-02-08 08:37:40,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6051282051282051 [2025-02-08 08:37:40,837 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 175 flow. Second operand 5 states and 118 transitions. [2025-02-08 08:37:40,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 89 transitions, 491 flow [2025-02-08 08:37:40,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 89 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:37:40,841 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 194 flow [2025-02-08 08:37:40,842 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2025-02-08 08:37:40,842 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2025-02-08 08:37:40,842 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 194 flow [2025-02-08 08:37:40,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:40,842 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:40,842 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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 08:37:40,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 08:37:40,843 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:37:40,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:40,844 INFO L85 PathProgramCache]: Analyzing trace with hash 745398675, now seen corresponding path program 3 times [2025-02-08 08:37:40,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:40,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944135256] [2025-02-08 08:37:40,844 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:37:40,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:40,852 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 2 equivalence classes. [2025-02-08 08:37:40,857 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 25 of 29 statements. [2025-02-08 08:37:40,857 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 08:37:40,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:40,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 08:37:40,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:40,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944135256] [2025-02-08 08:37:40,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944135256] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:37:40,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:37:40,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:37:40,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997823735] [2025-02-08 08:37:40,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:37:40,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:37:40,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:40,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:37:40,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:37:40,944 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 08:37:40,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 08:37:40,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:40,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 08:37:40,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:41,301 INFO L124 PetriNetUnfolderBase]: 4741/6921 cut-off events. [2025-02-08 08:37:41,301 INFO L125 PetriNetUnfolderBase]: For 4993/4993 co-relation queries the response was YES. [2025-02-08 08:37:41,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17982 conditions, 6921 events. 4741/6921 cut-off events. For 4993/4993 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 34256 event pairs, 965 based on Foata normal form. 134/6242 useless extension candidates. Maximal degree in co-relation 13973. Up to 2689 conditions per place. [2025-02-08 08:37:41,324 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 80 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2025-02-08 08:37:41,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 91 transitions, 535 flow [2025-02-08 08:37:41,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:37:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:37:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-02-08 08:37:41,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-02-08 08:37:41,325 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 194 flow. Second operand 5 states and 117 transitions. [2025-02-08 08:37:41,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 91 transitions, 535 flow [2025-02-08 08:37:41,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 521 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 08:37:41,333 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 204 flow [2025-02-08 08:37:41,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2025-02-08 08:37:41,333 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2025-02-08 08:37:41,333 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 204 flow [2025-02-08 08:37:41,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 08:37:41,335 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:41,335 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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 08:37:41,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 08:37:41,335 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:37:41,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:41,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1821826685, now seen corresponding path program 4 times [2025-02-08 08:37:41,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:41,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90073480] [2025-02-08 08:37:41,335 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:37:41,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:41,340 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-02-08 08:37:41,345 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 08:37:41,345 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:37:41,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:41,504 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 08:37:41,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:41,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90073480] [2025-02-08 08:37:41,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90073480] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:41,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824872481] [2025-02-08 08:37:41,505 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:37:41,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:41,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:41,508 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 08:37:41,509 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 08:37:41,551 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-02-08 08:37:41,568 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 08:37:41,569 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:37:41,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:41,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 08:37:41,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:41,709 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 08:37:41,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:41,858 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 08:37:41,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824872481] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:41,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:41,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 14 [2025-02-08 08:37:41,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229783598] [2025-02-08 08:37:41,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:41,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 08:37:41,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:41,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 08:37:41,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-02-08 08:37:41,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 08:37:41,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 204 flow. Second operand has 15 states, 15 states have (on average 12.6) internal successors, (189), 15 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:41,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:41,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 08:37:41,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:43,708 INFO L124 PetriNetUnfolderBase]: 17298/25108 cut-off events. [2025-02-08 08:37:43,709 INFO L125 PetriNetUnfolderBase]: For 18550/18550 co-relation queries the response was YES. [2025-02-08 08:37:43,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65780 conditions, 25108 events. 17298/25108 cut-off events. For 18550/18550 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 149475 event pairs, 1102 based on Foata normal form. 664/22866 useless extension candidates. Maximal degree in co-relation 25752. Up to 5432 conditions per place. [2025-02-08 08:37:43,784 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 376 selfloop transitions, 107 changer transitions 37/525 dead transitions. [2025-02-08 08:37:43,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 525 transitions, 2943 flow [2025-02-08 08:37:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-08 08:37:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2025-02-08 08:37:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 816 transitions. [2025-02-08 08:37:43,788 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5506072874493927 [2025-02-08 08:37:43,788 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 204 flow. Second operand 38 states and 816 transitions. [2025-02-08 08:37:43,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 525 transitions, 2943 flow [2025-02-08 08:37:43,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 525 transitions, 2905 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 08:37:43,798 INFO L231 Difference]: Finished difference. Result has 118 places, 157 transitions, 1309 flow [2025-02-08 08:37:43,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1309, PETRI_PLACES=118, PETRI_TRANSITIONS=157} [2025-02-08 08:37:43,799 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2025-02-08 08:37:43,799 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 157 transitions, 1309 flow [2025-02-08 08:37:43,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.6) internal successors, (189), 15 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:43,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:43,800 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 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 08:37:43,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 08:37:44,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:44,004 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:37:44,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:44,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2017704516, now seen corresponding path program 5 times [2025-02-08 08:37:44,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:44,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442065571] [2025-02-08 08:37:44,004 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:37:44,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:44,010 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-02-08 08:37:44,017 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 08:37:44,017 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 08:37:44,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:37:44,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:44,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442065571] [2025-02-08 08:37:44,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442065571] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:44,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293775987] [2025-02-08 08:37:44,063 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:37:44,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:44,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:44,067 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 08:37:44,069 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 08:37:44,104 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-02-08 08:37:44,120 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 08:37:44,120 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 08:37:44,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:44,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:37:44,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:44,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:37:44,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293775987] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:44,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:44,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2025-02-08 08:37:44,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338298579] [2025-02-08 08:37:44,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:44,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:37:44,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:44,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:37:44,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:37:44,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 08:37:44,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 157 transitions, 1309 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:44,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:44,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 08:37:44,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:46,147 INFO L124 PetriNetUnfolderBase]: 18022/26506 cut-off events. [2025-02-08 08:37:46,147 INFO L125 PetriNetUnfolderBase]: For 152623/152623 co-relation queries the response was YES. [2025-02-08 08:37:46,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109693 conditions, 26506 events. 18022/26506 cut-off events. For 152623/152623 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 159810 event pairs, 6993 based on Foata normal form. 270/23847 useless extension candidates. Maximal degree in co-relation 109153. Up to 11002 conditions per place. [2025-02-08 08:37:46,299 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 299 selfloop transitions, 40 changer transitions 1/345 dead transitions. [2025-02-08 08:37:46,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 345 transitions, 3514 flow [2025-02-08 08:37:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:37:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:37:46,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2025-02-08 08:37:46,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2025-02-08 08:37:46,300 INFO L175 Difference]: Start difference. First operand has 118 places, 157 transitions, 1309 flow. Second operand 4 states and 114 transitions. [2025-02-08 08:37:46,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 345 transitions, 3514 flow [2025-02-08 08:37:46,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 345 transitions, 3090 flow, removed 171 selfloop flow, removed 5 redundant places. [2025-02-08 08:37:46,762 INFO L231 Difference]: Finished difference. Result has 118 places, 189 transitions, 1627 flow [2025-02-08 08:37:46,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1627, PETRI_PLACES=118, PETRI_TRANSITIONS=189} [2025-02-08 08:37:46,762 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2025-02-08 08:37:46,763 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 189 transitions, 1627 flow [2025-02-08 08:37:46,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:46,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:46,764 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 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 08:37:46,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 08:37:46,965 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 08:37:46,965 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:37:46,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:46,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2067953921, now seen corresponding path program 1 times [2025-02-08 08:37:46,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:46,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462152364] [2025-02-08 08:37:46,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:37:46,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:46,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 08:37:46,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 08:37:46,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:37:46,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:37:47,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:47,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462152364] [2025-02-08 08:37:47,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462152364] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:47,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495654226] [2025-02-08 08:37:47,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:37:47,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:47,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:47,027 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 08:37:47,029 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 08:37:47,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 08:37:47,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 08:37:47,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:37:47,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:47,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:37:47,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:37:47,099 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:37:47,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495654226] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:47,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:47,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2025-02-08 08:37:47,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351459912] [2025-02-08 08:37:47,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:47,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:37:47,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:47,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:37:47,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:37:47,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 08:37:47,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 189 transitions, 1627 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:47,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:47,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 08:37:47,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:37:51,823 INFO L124 PetriNetUnfolderBase]: 38627/56875 cut-off events. [2025-02-08 08:37:51,823 INFO L125 PetriNetUnfolderBase]: For 334893/334893 co-relation queries the response was YES. [2025-02-08 08:37:52,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233547 conditions, 56875 events. 38627/56875 cut-off events. For 334893/334893 co-relation queries the response was YES. Maximal size of possible extension queue 1453. Compared 379216 event pairs, 16454 based on Foata normal form. 848/51466 useless extension candidates. Maximal degree in co-relation 229376. Up to 21334 conditions per place. [2025-02-08 08:37:52,323 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 389 selfloop transitions, 36 changer transitions 1/431 dead transitions. [2025-02-08 08:37:52,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 431 transitions, 4621 flow [2025-02-08 08:37:52,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:37:52,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:37:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-02-08 08:37:52,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7051282051282052 [2025-02-08 08:37:52,325 INFO L175 Difference]: Start difference. First operand has 118 places, 189 transitions, 1627 flow. Second operand 4 states and 110 transitions. [2025-02-08 08:37:52,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 431 transitions, 4621 flow [2025-02-08 08:37:53,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 431 transitions, 4479 flow, removed 71 selfloop flow, removed 0 redundant places. [2025-02-08 08:37:53,147 INFO L231 Difference]: Finished difference. Result has 123 places, 218 transitions, 2038 flow [2025-02-08 08:37:53,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2038, PETRI_PLACES=123, PETRI_TRANSITIONS=218} [2025-02-08 08:37:53,148 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2025-02-08 08:37:53,148 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 218 transitions, 2038 flow [2025-02-08 08:37:53,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:53,149 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:37:53,149 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:37:53,154 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 08:37:53,353 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 08:37:53,353 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:37:53,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:37:53,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1429154429, now seen corresponding path program 6 times [2025-02-08 08:37:53,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:37:53,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585438204] [2025-02-08 08:37:53,354 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:37:53,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:37:53,361 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 3 equivalence classes. [2025-02-08 08:37:53,375 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:37:53,376 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 08:37:53,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 08:37:53,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:37:53,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585438204] [2025-02-08 08:37:53,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585438204] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:37:53,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303868382] [2025-02-08 08:37:53,587 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:37:53,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:37:53,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:37:53,589 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 08:37:53,591 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 08:37:53,628 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 3 equivalence classes. [2025-02-08 08:37:53,646 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:37:53,647 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 08:37:53,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:37:53,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 08:37:53,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:37:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 08:37:53,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:37:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 08:37:53,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303868382] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:37:53,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:37:53,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 16 [2025-02-08 08:37:53,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140648113] [2025-02-08 08:37:53,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:37:53,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 08:37:53,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:37:53,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 08:37:53,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-02-08 08:37:53,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 08:37:53,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 218 transitions, 2038 flow. Second operand has 17 states, 17 states have (on average 12.529411764705882) internal successors, (213), 17 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:37:53,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:37:53,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 08:37:53,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:38:07,569 INFO L124 PetriNetUnfolderBase]: 100400/145815 cut-off events. [2025-02-08 08:38:07,570 INFO L125 PetriNetUnfolderBase]: For 990220/990220 co-relation queries the response was YES. [2025-02-08 08:38:08,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591121 conditions, 145815 events. 100400/145815 cut-off events. For 990220/990220 co-relation queries the response was YES. Maximal size of possible extension queue 3303. Compared 1032608 event pairs, 10200 based on Foata normal form. 5708/134743 useless extension candidates. Maximal degree in co-relation 582017. Up to 31398 conditions per place. [2025-02-08 08:38:08,720 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 519 selfloop transitions, 348 changer transitions 408/1280 dead transitions. [2025-02-08 08:38:08,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 1280 transitions, 14077 flow [2025-02-08 08:38:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-02-08 08:38:08,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-02-08 08:38:08,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 963 transitions. [2025-02-08 08:38:08,723 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5611888111888111 [2025-02-08 08:38:08,723 INFO L175 Difference]: Start difference. First operand has 123 places, 218 transitions, 2038 flow. Second operand 44 states and 963 transitions. [2025-02-08 08:38:08,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 1280 transitions, 14077 flow [2025-02-08 08:38:11,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 1280 transitions, 13857 flow, removed 110 selfloop flow, removed 0 redundant places. [2025-02-08 08:38:11,880 INFO L231 Difference]: Finished difference. Result has 187 places, 417 transitions, 5727 flow [2025-02-08 08:38:11,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5727, PETRI_PLACES=187, PETRI_TRANSITIONS=417} [2025-02-08 08:38:11,880 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2025-02-08 08:38:11,881 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 417 transitions, 5727 flow [2025-02-08 08:38:11,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.529411764705882) internal successors, (213), 17 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:38:11,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:38:11,881 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:38:11,887 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 08:38:12,081 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,SelfDestructingSolverStorable9 [2025-02-08 08:38:12,081 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:38:12,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:38:12,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1082300488, now seen corresponding path program 7 times [2025-02-08 08:38:12,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:38:12,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747192470] [2025-02-08 08:38:12,082 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:38:12,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:38:12,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 08:38:12,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 08:38:12,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:38:12,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 08:38:12,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:38:12,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747192470] [2025-02-08 08:38:12,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747192470] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:38:12,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456675889] [2025-02-08 08:38:12,157 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:38:12,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:38:12,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:38:12,161 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 08:38:12,162 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 08:38:12,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 08:38:12,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 08:38:12,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:38:12,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:38:12,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:38:12,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:38:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 08:38:12,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:38:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 08:38:12,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456675889] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:38:12,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:38:12,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2025-02-08 08:38:12,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652088639] [2025-02-08 08:38:12,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:38:12,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:38:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:38:12,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:38:12,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:38:12,284 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 08:38:12,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 417 transitions, 5727 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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 08:38:12,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:38:12,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 08:38:12,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand