./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.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 fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:10:41,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:10:41,726 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 13:10:41,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:10:41,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:10:41,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:10:41,749 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:10:41,750 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:10:41,750 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:10:41,750 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:10:41,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:10:41,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:10:41,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:10:41,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:10:41,751 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:10:41,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:10:41,751 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:10:41,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:10:41,751 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:10:41,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:10:41,751 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:10:41,751 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:10:41,751 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:10:41,751 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:10:41,751 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:10:41,751 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:10:41,751 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:10:41,752 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:10:41,752 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:10:41,752 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:10:41,752 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:10:41,752 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:10:41,752 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:10:41,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:10:41,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:10:41,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:10:41,752 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:10:41,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:10:41,752 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:10:41,752 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:10:41,753 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:10:41,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:10:41,753 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 -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2025-02-06 13:10:41,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:10:41,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:10:41,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:10:41,960 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:10:41,960 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:10:41,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2025-02-06 13:10:43,083 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/53a3989dd/e63daf3dfb2f477b84d37a8d99fee616/FLAG8dae5ba6c [2025-02-06 13:10:43,295 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:10:43,295 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2025-02-06 13:10:43,302 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/53a3989dd/e63daf3dfb2f477b84d37a8d99fee616/FLAG8dae5ba6c [2025-02-06 13:10:43,658 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/53a3989dd/e63daf3dfb2f477b84d37a8d99fee616 [2025-02-06 13:10:43,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:10:43,663 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:10:43,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:10:43,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:10:43,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:10:43,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef1e408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43, skipping insertion in model container [2025-02-06 13:10:43,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,693 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:10:43,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:10:43,817 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:10:43,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:10:43,843 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:10:43,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43 WrapperNode [2025-02-06 13:10:43,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:10:43,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:10:43,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:10:43,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:10:43,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,869 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2025-02-06 13:10:43,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:10:43,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:10:43,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:10:43,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:10:43,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,877 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,887 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 13:10:43,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,891 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:10:43,897 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:10:43,897 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:10:43,897 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:10:43,902 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (1/1) ... [2025-02-06 13:10:43,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:10:43,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:43,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 13:10:43,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 13:10:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:10:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 13:10:43,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 13:10:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 13:10:43,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 13:10:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:10:43,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 13:10:43,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 13:10:43,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:10:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:10:43,960 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 13:10:44,020 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:10:44,022 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:10:44,123 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:10:44,124 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:10:44,216 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:10:44,216 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:10:44,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:10:44 BoogieIcfgContainer [2025-02-06 13:10:44,216 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:10:44,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:10:44,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:10:44,222 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:10:44,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:10:43" (1/3) ... [2025-02-06 13:10:44,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4993065f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:10:44, skipping insertion in model container [2025-02-06 13:10:44,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:10:43" (2/3) ... [2025-02-06 13:10:44,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4993065f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:10:44, skipping insertion in model container [2025-02-06 13:10:44,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:10:44" (3/3) ... [2025-02-06 13:10:44,223 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2025-02-06 13:10:44,233 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:10:44,235 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr.wvr.c that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-06 13:10:44,235 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:10:44,277 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 13:10:44,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2025-02-06 13:10:44,324 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2025-02-06 13:10:44,328 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 13:10:44,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2025-02-06 13:10:44,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2025-02-06 13:10:44,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2025-02-06 13:10:44,341 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:10:44,351 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;@1a7d825c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:10:44,351 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 13:10:44,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:10:44,363 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2025-02-06 13:10:44,363 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 13:10:44,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:44,363 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:44,364 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:10:44,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:44,367 INFO L85 PathProgramCache]: Analyzing trace with hash -773778652, now seen corresponding path program 1 times [2025-02-06 13:10:44,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:44,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032050384] [2025-02-06 13:10:44,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:10:44,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:44,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 13:10:44,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:10:44,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:44,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:44,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:44,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032050384] [2025-02-06 13:10:44,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032050384] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:44,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:44,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 13:10:44,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299487547] [2025-02-06 13:10:44,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:44,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:10:44,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:44,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:10:44,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:10:44,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2025-02-06 13:10:44,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:44,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:44,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2025-02-06 13:10:44,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:44,699 INFO L124 PetriNetUnfolderBase]: 70/140 cut-off events. [2025-02-06 13:10:44,699 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 13:10:44,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 140 events. 70/140 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 441 event pairs, 31 based on Foata normal form. 9/148 useless extension candidates. Maximal degree in co-relation 255. Up to 86 conditions per place. [2025-02-06 13:10:44,703 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 20 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2025-02-06 13:10:44,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 113 flow [2025-02-06 13:10:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:10:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:10:44,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2025-02-06 13:10:44,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2025-02-06 13:10:44,712 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 4 states and 49 transitions. [2025-02-06 13:10:44,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 113 flow [2025-02-06 13:10:44,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 26 transitions, 103 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 13:10:44,716 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2025-02-06 13:10:44,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2025-02-06 13:10:44,720 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2025-02-06 13:10:44,720 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2025-02-06 13:10:44,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:44,721 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:44,721 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:44,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:10:44,721 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:10:44,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:44,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1392091251, now seen corresponding path program 1 times [2025-02-06 13:10:44,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:44,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806276107] [2025-02-06 13:10:44,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:10:44,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:44,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 13:10:44,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:10:44,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:44,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 13:10:44,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:44,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806276107] [2025-02-06 13:10:44,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806276107] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:44,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:44,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 13:10:44,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767274494] [2025-02-06 13:10:44,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:44,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:10:44,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:44,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:10:44,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:10:44,829 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2025-02-06 13:10:44,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:44,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:44,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2025-02-06 13:10:44,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:44,911 INFO L124 PetriNetUnfolderBase]: 89/183 cut-off events. [2025-02-06 13:10:44,912 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2025-02-06 13:10:44,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 183 events. 89/183 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 627 event pairs, 49 based on Foata normal form. 13/193 useless extension candidates. Maximal degree in co-relation 87. Up to 124 conditions per place. [2025-02-06 13:10:44,915 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2025-02-06 13:10:44,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 129 flow [2025-02-06 13:10:44,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:10:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:10:44,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2025-02-06 13:10:44,917 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2025-02-06 13:10:44,917 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 47 transitions. [2025-02-06 13:10:44,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 129 flow [2025-02-06 13:10:44,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:10:44,918 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2025-02-06 13:10:44,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2025-02-06 13:10:44,919 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2025-02-06 13:10:44,919 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2025-02-06 13:10:44,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:44,920 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:44,920 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:44,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 13:10:44,920 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:10:44,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2022193513, now seen corresponding path program 1 times [2025-02-06 13:10:44,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:44,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353050273] [2025-02-06 13:10:44,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:10:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:44,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 13:10:44,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 13:10:44,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:44,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:45,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:45,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353050273] [2025-02-06 13:10:45,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353050273] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:45,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850419360] [2025-02-06 13:10:45,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:10:45,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:45,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:45,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:10:45,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 13:10:45,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 13:10:45,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 13:10:45,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:45,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:45,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 13:10:45,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:10:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:45,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:10:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:45,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850419360] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:45,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 13:10:45,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3] total 5 [2025-02-06 13:10:45,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561821325] [2025-02-06 13:10:45,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:45,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:10:45,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:45,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:10:45,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 13:10:45,404 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2025-02-06 13:10:45,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:45,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:45,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2025-02-06 13:10:45,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:45,477 INFO L124 PetriNetUnfolderBase]: 153/309 cut-off events. [2025-02-06 13:10:45,477 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-02-06 13:10:45,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 309 events. 153/309 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1167 event pairs, 23 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 236. Up to 97 conditions per place. [2025-02-06 13:10:45,479 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 35 selfloop transitions, 5 changer transitions 3/46 dead transitions. [2025-02-06 13:10:45,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 46 transitions, 238 flow [2025-02-06 13:10:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:10:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:10:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2025-02-06 13:10:45,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2025-02-06 13:10:45,480 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 4 states and 63 transitions. [2025-02-06 13:10:45,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 46 transitions, 238 flow [2025-02-06 13:10:45,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 46 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:10:45,482 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 98 flow [2025-02-06 13:10:45,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2025-02-06 13:10:45,482 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2025-02-06 13:10:45,482 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 98 flow [2025-02-06 13:10:45,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:45,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:45,483 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:45,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 13:10:45,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:45,687 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:10:45,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1746189581, now seen corresponding path program 2 times [2025-02-06 13:10:45,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:45,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789172640] [2025-02-06 13:10:45,688 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:10:45,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:45,696 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 13:10:45,704 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 13:10:45,704 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:10:45,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:45,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:45,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789172640] [2025-02-06 13:10:45,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789172640] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:45,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338477173] [2025-02-06 13:10:45,765 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:10:45,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:45,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:45,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:10:45,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 13:10:45,793 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 13:10:45,803 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 13:10:45,803 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:10:45,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:45,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 13:10:45,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:10:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:45,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:10:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:45,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338477173] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:10:45,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:10:45,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 13:10:45,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297762900] [2025-02-06 13:10:45,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:10:45,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:10:45,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:45,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:10:45,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:10:45,992 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2025-02-06 13:10:45,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 98 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:45,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:45,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2025-02-06 13:10:45,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:46,087 INFO L124 PetriNetUnfolderBase]: 286/530 cut-off events. [2025-02-06 13:10:46,087 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2025-02-06 13:10:46,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 530 events. 286/530 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2163 event pairs, 42 based on Foata normal form. 18/547 useless extension candidates. Maximal degree in co-relation 507. Up to 242 conditions per place. [2025-02-06 13:10:46,092 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 40 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2025-02-06 13:10:46,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 335 flow [2025-02-06 13:10:46,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 13:10:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 13:10:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2025-02-06 13:10:46,094 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2025-02-06 13:10:46,094 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 98 flow. Second operand 6 states and 70 transitions. [2025-02-06 13:10:46,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 335 flow [2025-02-06 13:10:46,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 55 transitions, 335 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 13:10:46,096 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 219 flow [2025-02-06 13:10:46,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2025-02-06 13:10:46,098 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2025-02-06 13:10:46,098 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 219 flow [2025-02-06 13:10:46,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:46,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:46,099 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:46,109 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 [2025-02-06 13:10:46,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:46,300 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:10:46,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash 780880826, now seen corresponding path program 3 times [2025-02-06 13:10:46,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:46,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782140827] [2025-02-06 13:10:46,301 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:10:46,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:46,305 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:10:46,313 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:10:46,314 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:10:46,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:46,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:46,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782140827] [2025-02-06 13:10:46,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782140827] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:46,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656940603] [2025-02-06 13:10:46,423 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:10:46,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:46,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:46,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:10:46,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 13:10:46,452 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:10:46,462 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:10:46,462 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:10:46,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:46,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 13:10:46,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:10:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:46,711 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:10:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:46,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656940603] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:10:46,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:10:46,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20 [2025-02-06 13:10:46,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476180609] [2025-02-06 13:10:46,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:10:46,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 13:10:46,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:46,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 13:10:46,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2025-02-06 13:10:46,883 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:10:46,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 219 flow. Second operand has 20 states, 20 states have (on average 6.6) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:46,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:46,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:10:46,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:47,755 INFO L124 PetriNetUnfolderBase]: 627/1078 cut-off events. [2025-02-06 13:10:47,756 INFO L125 PetriNetUnfolderBase]: For 1710/1710 co-relation queries the response was YES. [2025-02-06 13:10:47,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 1078 events. 627/1078 cut-off events. For 1710/1710 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4731 event pairs, 3 based on Foata normal form. 29/1107 useless extension candidates. Maximal degree in co-relation 2364. Up to 211 conditions per place. [2025-02-06 13:10:47,761 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 118 selfloop transitions, 97 changer transitions 23/239 dead transitions. [2025-02-06 13:10:47,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 239 transitions, 1673 flow [2025-02-06 13:10:47,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-06 13:10:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2025-02-06 13:10:47,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 359 transitions. [2025-02-06 13:10:47,763 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4107551487414188 [2025-02-06 13:10:47,763 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 219 flow. Second operand 38 states and 359 transitions. [2025-02-06 13:10:47,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 239 transitions, 1673 flow [2025-02-06 13:10:47,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 239 transitions, 1665 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-02-06 13:10:47,770 INFO L231 Difference]: Finished difference. Result has 94 places, 114 transitions, 1096 flow [2025-02-06 13:10:47,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1096, PETRI_PLACES=94, PETRI_TRANSITIONS=114} [2025-02-06 13:10:47,771 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 69 predicate places. [2025-02-06 13:10:47,771 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 114 transitions, 1096 flow [2025-02-06 13:10:47,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.6) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:47,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:47,771 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:47,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 13:10:47,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:47,972 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:10:47,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:47,973 INFO L85 PathProgramCache]: Analyzing trace with hash 408318092, now seen corresponding path program 4 times [2025-02-06 13:10:47,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:47,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766653699] [2025-02-06 13:10:47,973 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:10:47,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:47,977 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:10:47,979 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 13:10:47,979 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 13:10:47,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:48,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:48,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766653699] [2025-02-06 13:10:48,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766653699] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:48,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276512831] [2025-02-06 13:10:48,019 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:10:48,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:48,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:48,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:10:48,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 13:10:48,052 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:10:48,059 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 13:10:48,059 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 13:10:48,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:48,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 13:10:48,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:10:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:48,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:10:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:48,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276512831] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:10:48,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:10:48,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2025-02-06 13:10:48,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377866783] [2025-02-06 13:10:48,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:10:48,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:10:48,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:48,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:10:48,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:10:48,154 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:10:48,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 1096 flow. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:48,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:48,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:10:48,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:48,548 INFO L124 PetriNetUnfolderBase]: 889/1517 cut-off events. [2025-02-06 13:10:48,549 INFO L125 PetriNetUnfolderBase]: For 15478/15478 co-relation queries the response was YES. [2025-02-06 13:10:48,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8269 conditions, 1517 events. 889/1517 cut-off events. For 15478/15478 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7184 event pairs, 65 based on Foata normal form. 71/1588 useless extension candidates. Maximal degree in co-relation 7185. Up to 391 conditions per place. [2025-02-06 13:10:48,564 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 129 selfloop transitions, 135 changer transitions 0/265 dead transitions. [2025-02-06 13:10:48,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 265 transitions, 3003 flow [2025-02-06 13:10:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 13:10:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 13:10:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 169 transitions. [2025-02-06 13:10:48,566 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4592391304347826 [2025-02-06 13:10:48,566 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 1096 flow. Second operand 16 states and 169 transitions. [2025-02-06 13:10:48,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 265 transitions, 3003 flow [2025-02-06 13:10:48,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 265 transitions, 2778 flow, removed 105 selfloop flow, removed 4 redundant places. [2025-02-06 13:10:48,593 INFO L231 Difference]: Finished difference. Result has 115 places, 182 transitions, 2204 flow [2025-02-06 13:10:48,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2204, PETRI_PLACES=115, PETRI_TRANSITIONS=182} [2025-02-06 13:10:48,594 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 90 predicate places. [2025-02-06 13:10:48,594 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 182 transitions, 2204 flow [2025-02-06 13:10:48,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:48,594 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:48,594 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:48,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 13:10:48,798 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,SelfDestructingSolverStorable5 [2025-02-06 13:10:48,798 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:10:48,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:48,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1496678002, now seen corresponding path program 5 times [2025-02-06 13:10:48,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:48,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773532566] [2025-02-06 13:10:48,799 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:10:48,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:48,807 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:10:48,810 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:10:48,810 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:10:48,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:48,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:48,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773532566] [2025-02-06 13:10:48,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773532566] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:48,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005111513] [2025-02-06 13:10:48,942 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:10:48,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:48,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:48,945 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:10:48,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 13:10:48,979 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:10:48,991 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:10:48,991 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:10:48,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:48,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 13:10:48,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:10:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:49,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:10:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:49,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005111513] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:10:49,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:10:49,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-02-06 13:10:49,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590223250] [2025-02-06 13:10:49,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:10:49,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 13:10:49,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:49,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 13:10:49,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-02-06 13:10:49,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:10:49,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 182 transitions, 2204 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:49,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:49,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:10:49,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:50,158 INFO L124 PetriNetUnfolderBase]: 1485/2536 cut-off events. [2025-02-06 13:10:50,158 INFO L125 PetriNetUnfolderBase]: For 41398/41398 co-relation queries the response was YES. [2025-02-06 13:10:50,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16414 conditions, 2536 events. 1485/2536 cut-off events. For 41398/41398 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13570 event pairs, 36 based on Foata normal form. 57/2593 useless extension candidates. Maximal degree in co-relation 13376. Up to 477 conditions per place. [2025-02-06 13:10:50,181 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 171 selfloop transitions, 307 changer transitions 6/485 dead transitions. [2025-02-06 13:10:50,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 485 transitions, 6636 flow [2025-02-06 13:10:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-06 13:10:50,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2025-02-06 13:10:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 371 transitions. [2025-02-06 13:10:50,183 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4244851258581236 [2025-02-06 13:10:50,183 INFO L175 Difference]: Start difference. First operand has 115 places, 182 transitions, 2204 flow. Second operand 38 states and 371 transitions. [2025-02-06 13:10:50,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 485 transitions, 6636 flow [2025-02-06 13:10:50,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 485 transitions, 6332 flow, removed 152 selfloop flow, removed 0 redundant places. [2025-02-06 13:10:50,283 INFO L231 Difference]: Finished difference. Result has 177 places, 371 transitions, 5479 flow [2025-02-06 13:10:50,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5479, PETRI_PLACES=177, PETRI_TRANSITIONS=371} [2025-02-06 13:10:50,284 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 152 predicate places. [2025-02-06 13:10:50,284 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 371 transitions, 5479 flow [2025-02-06 13:10:50,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:50,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:50,284 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:50,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 13:10:50,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:50,489 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:10:50,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:50,490 INFO L85 PathProgramCache]: Analyzing trace with hash -769061974, now seen corresponding path program 6 times [2025-02-06 13:10:50,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:50,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137244658] [2025-02-06 13:10:50,490 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:10:50,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:50,494 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:10:50,498 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:10:50,498 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 13:10:50,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:50,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:50,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137244658] [2025-02-06 13:10:50,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137244658] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:50,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248573983] [2025-02-06 13:10:50,579 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:10:50,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:50,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:50,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:10:50,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 13:10:50,616 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:10:50,626 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:10:50,626 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 13:10:50,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:50,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 13:10:50,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:10:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:50,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:10:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:50,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248573983] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:10:50,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:10:50,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2025-02-06 13:10:50,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047150123] [2025-02-06 13:10:50,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:10:50,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 13:10:50,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:50,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 13:10:50,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2025-02-06 13:10:50,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:10:50,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 371 transitions, 5479 flow. Second operand has 20 states, 20 states have (on average 6.35) internal successors, (127), 20 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:50,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:50,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:10:50,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:51,886 INFO L124 PetriNetUnfolderBase]: 1655/2787 cut-off events. [2025-02-06 13:10:51,886 INFO L125 PetriNetUnfolderBase]: For 79738/79738 co-relation queries the response was YES. [2025-02-06 13:10:51,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22991 conditions, 2787 events. 1655/2787 cut-off events. For 79738/79738 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14858 event pairs, 59 based on Foata normal form. 26/2813 useless extension candidates. Maximal degree in co-relation 20254. Up to 510 conditions per place. [2025-02-06 13:10:51,919 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 233 selfloop transitions, 332 changer transitions 3/569 dead transitions. [2025-02-06 13:10:51,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 569 transitions, 9872 flow [2025-02-06 13:10:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 13:10:51,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-02-06 13:10:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 306 transitions. [2025-02-06 13:10:51,921 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4157608695652174 [2025-02-06 13:10:51,921 INFO L175 Difference]: Start difference. First operand has 177 places, 371 transitions, 5479 flow. Second operand 32 states and 306 transitions. [2025-02-06 13:10:51,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 569 transitions, 9872 flow [2025-02-06 13:10:52,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 569 transitions, 9220 flow, removed 306 selfloop flow, removed 6 redundant places. [2025-02-06 13:10:52,148 INFO L231 Difference]: Finished difference. Result has 211 places, 460 transitions, 7606 flow [2025-02-06 13:10:52,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=4997, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7606, PETRI_PLACES=211, PETRI_TRANSITIONS=460} [2025-02-06 13:10:52,153 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 186 predicate places. [2025-02-06 13:10:52,153 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 460 transitions, 7606 flow [2025-02-06 13:10:52,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.35) internal successors, (127), 20 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:52,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:52,153 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:52,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 13:10:52,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-06 13:10:52,354 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:10:52,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash 123117542, now seen corresponding path program 7 times [2025-02-06 13:10:52,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:52,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534540850] [2025-02-06 13:10:52,355 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:10:52,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:52,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 13:10:52,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:10:52,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:52,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:52,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:52,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534540850] [2025-02-06 13:10:52,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534540850] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:52,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390536339] [2025-02-06 13:10:52,523 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:10:52,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:52,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:52,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:10:52,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 13:10:52,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 13:10:52,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:10:52,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:52,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:52,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 13:10:52,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:10:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:52,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:10:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:52,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390536339] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:10:52,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:10:52,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-02-06 13:10:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419975589] [2025-02-06 13:10:52,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:10:52,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 13:10:52,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:52,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 13:10:52,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2025-02-06 13:10:52,771 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:10:52,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 460 transitions, 7606 flow. Second operand has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 21 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:52,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:52,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:10:52,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:53,960 INFO L124 PetriNetUnfolderBase]: 2186/3644 cut-off events. [2025-02-06 13:10:53,960 INFO L125 PetriNetUnfolderBase]: For 116833/116833 co-relation queries the response was YES. [2025-02-06 13:10:53,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31436 conditions, 3644 events. 2186/3644 cut-off events. For 116833/116833 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 20184 event pairs, 50 based on Foata normal form. 18/3662 useless extension candidates. Maximal degree in co-relation 31054. Up to 709 conditions per place. [2025-02-06 13:10:53,996 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 347 selfloop transitions, 395 changer transitions 4/747 dead transitions. [2025-02-06 13:10:53,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 747 transitions, 13539 flow [2025-02-06 13:10:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-06 13:10:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2025-02-06 13:10:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 320 transitions. [2025-02-06 13:10:53,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39751552795031053 [2025-02-06 13:10:53,998 INFO L175 Difference]: Start difference. First operand has 211 places, 460 transitions, 7606 flow. Second operand 35 states and 320 transitions. [2025-02-06 13:10:53,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 747 transitions, 13539 flow [2025-02-06 13:10:54,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 747 transitions, 12525 flow, removed 498 selfloop flow, removed 3 redundant places. [2025-02-06 13:10:54,553 INFO L231 Difference]: Finished difference. Result has 251 places, 596 transitions, 10115 flow [2025-02-06 13:10:54,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=7070, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=10115, PETRI_PLACES=251, PETRI_TRANSITIONS=596} [2025-02-06 13:10:54,554 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 226 predicate places. [2025-02-06 13:10:54,554 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 596 transitions, 10115 flow [2025-02-06 13:10:54,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 21 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:54,554 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:54,555 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:54,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 13:10:54,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:54,755 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:10:54,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:54,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1139768534, now seen corresponding path program 8 times [2025-02-06 13:10:54,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:54,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134502277] [2025-02-06 13:10:54,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:10:54,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:54,759 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:10:54,762 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:10:54,762 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:10:54,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:54,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:54,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134502277] [2025-02-06 13:10:54,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134502277] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:54,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506138944] [2025-02-06 13:10:54,911 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:10:54,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:54,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:54,913 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:10:54,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 13:10:54,938 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:10:54,947 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:10:54,948 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:10:54,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:54,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 13:10:54,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:10:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:55,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:10:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:55,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506138944] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:10:55,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:10:55,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-02-06 13:10:55,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702288411] [2025-02-06 13:10:55,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:10:55,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 13:10:55,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:55,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 13:10:55,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2025-02-06 13:10:55,117 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:10:55,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 596 transitions, 10115 flow. Second operand has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:55,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:55,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:10:55,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:56,249 INFO L124 PetriNetUnfolderBase]: 2872/4820 cut-off events. [2025-02-06 13:10:56,250 INFO L125 PetriNetUnfolderBase]: For 120770/120770 co-relation queries the response was YES. [2025-02-06 13:10:56,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39957 conditions, 4820 events. 2872/4820 cut-off events. For 120770/120770 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 28424 event pairs, 97 based on Foata normal form. 95/4915 useless extension candidates. Maximal degree in co-relation 39252. Up to 1278 conditions per place. [2025-02-06 13:10:56,300 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 397 selfloop transitions, 553 changer transitions 5/956 dead transitions. [2025-02-06 13:10:56,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 956 transitions, 17743 flow [2025-02-06 13:10:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-06 13:10:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-02-06 13:10:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 284 transitions. [2025-02-06 13:10:56,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4257871064467766 [2025-02-06 13:10:56,302 INFO L175 Difference]: Start difference. First operand has 251 places, 596 transitions, 10115 flow. Second operand 29 states and 284 transitions. [2025-02-06 13:10:56,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 956 transitions, 17743 flow [2025-02-06 13:10:56,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 956 transitions, 17442 flow, removed 59 selfloop flow, removed 10 redundant places. [2025-02-06 13:10:56,852 INFO L231 Difference]: Finished difference. Result has 281 places, 787 transitions, 15622 flow [2025-02-06 13:10:56,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=9443, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15622, PETRI_PLACES=281, PETRI_TRANSITIONS=787} [2025-02-06 13:10:56,853 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 256 predicate places. [2025-02-06 13:10:56,853 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 787 transitions, 15622 flow [2025-02-06 13:10:56,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:56,853 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:56,853 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:56,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 13:10:57,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:57,054 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:10:57,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:57,055 INFO L85 PathProgramCache]: Analyzing trace with hash -446247348, now seen corresponding path program 9 times [2025-02-06 13:10:57,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:57,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225871385] [2025-02-06 13:10:57,055 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:10:57,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:57,058 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:10:57,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:10:57,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:10:57,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:57,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:57,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225871385] [2025-02-06 13:10:57,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225871385] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:57,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133374141] [2025-02-06 13:10:57,103 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:10:57,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:57,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:57,105 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:10:57,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 13:10:57,131 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:10:57,139 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:10:57,140 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:10:57,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:57,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 13:10:57,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:10:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:57,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:10:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:10:57,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133374141] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:10:57,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:10:57,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2025-02-06 13:10:57,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795078156] [2025-02-06 13:10:57,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:10:57,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 13:10:57,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:57,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 13:10:57,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2025-02-06 13:10:57,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:10:57,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 787 transitions, 15622 flow. Second operand has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:57,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:57,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:10:57,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:59,065 INFO L124 PetriNetUnfolderBase]: 3594/6043 cut-off events. [2025-02-06 13:10:59,065 INFO L125 PetriNetUnfolderBase]: For 225462/225462 co-relation queries the response was YES. [2025-02-06 13:10:59,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57011 conditions, 6043 events. 3594/6043 cut-off events. For 225462/225462 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 37224 event pairs, 110 based on Foata normal form. 83/6126 useless extension candidates. Maximal degree in co-relation 56140. Up to 1133 conditions per place. [2025-02-06 13:10:59,122 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 318 selfloop transitions, 840 changer transitions 3/1162 dead transitions. [2025-02-06 13:10:59,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1162 transitions, 24886 flow [2025-02-06 13:10:59,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-02-06 13:10:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-02-06 13:10:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 413 transitions. [2025-02-06 13:10:59,125 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40810276679841895 [2025-02-06 13:10:59,125 INFO L175 Difference]: Start difference. First operand has 281 places, 787 transitions, 15622 flow. Second operand 44 states and 413 transitions. [2025-02-06 13:10:59,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1162 transitions, 24886 flow [2025-02-06 13:11:00,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1162 transitions, 24337 flow, removed 217 selfloop flow, removed 8 redundant places. [2025-02-06 13:11:00,351 INFO L231 Difference]: Finished difference. Result has 330 places, 1018 transitions, 23183 flow [2025-02-06 13:11:00,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=15106, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=617, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=23183, PETRI_PLACES=330, PETRI_TRANSITIONS=1018} [2025-02-06 13:11:00,356 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 305 predicate places. [2025-02-06 13:11:00,357 INFO L471 AbstractCegarLoop]: Abstraction has has 330 places, 1018 transitions, 23183 flow [2025-02-06 13:11:00,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:00,357 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:11:00,357 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:11:00,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 13:11:00,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:11:00,558 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:11:00,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:11:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash 553736336, now seen corresponding path program 10 times [2025-02-06 13:11:00,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:11:00,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875075463] [2025-02-06 13:11:00,560 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:11:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:11:00,567 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:11:00,569 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 13:11:00,569 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 13:11:00,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:00,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:11:00,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875075463] [2025-02-06 13:11:00,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875075463] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:11:00,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391386116] [2025-02-06 13:11:00,629 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:11:00,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:11:00,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:11:00,631 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:11:00,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 13:11:00,663 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:11:00,670 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 13:11:00,670 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 13:11:00,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:00,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 13:11:00,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:11:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:00,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:11:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:00,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391386116] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:11:00,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:11:00,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2025-02-06 13:11:00,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948212138] [2025-02-06 13:11:00,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:11:00,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:11:00,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:11:00,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:11:00,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:11:00,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:11:00,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 1018 transitions, 23183 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:00,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:11:00,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:11:00,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:11:02,560 INFO L124 PetriNetUnfolderBase]: 3592/6052 cut-off events. [2025-02-06 13:11:02,560 INFO L125 PetriNetUnfolderBase]: For 291480/291480 co-relation queries the response was YES. [2025-02-06 13:11:02,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63287 conditions, 6052 events. 3592/6052 cut-off events. For 291480/291480 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 37613 event pairs, 322 based on Foata normal form. 18/6070 useless extension candidates. Maximal degree in co-relation 62648. Up to 1437 conditions per place. [2025-02-06 13:11:02,657 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 651 selfloop transitions, 434 changer transitions 3/1089 dead transitions. [2025-02-06 13:11:02,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1089 transitions, 26547 flow [2025-02-06 13:11:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:11:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:11:02,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2025-02-06 13:11:02,661 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47035573122529645 [2025-02-06 13:11:02,661 INFO L175 Difference]: Start difference. First operand has 330 places, 1018 transitions, 23183 flow. Second operand 11 states and 119 transitions. [2025-02-06 13:11:02,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1089 transitions, 26547 flow [2025-02-06 13:11:04,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 1089 transitions, 25930 flow, removed 266 selfloop flow, removed 8 redundant places. [2025-02-06 13:11:04,249 INFO L231 Difference]: Finished difference. Result has 333 places, 1023 transitions, 23936 flow [2025-02-06 13:11:04,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=22462, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1012, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=422, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23936, PETRI_PLACES=333, PETRI_TRANSITIONS=1023} [2025-02-06 13:11:04,251 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 308 predicate places. [2025-02-06 13:11:04,251 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 1023 transitions, 23936 flow [2025-02-06 13:11:04,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:04,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:11:04,252 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:11:04,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 13:11:04,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 13:11:04,452 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:11:04,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:11:04,453 INFO L85 PathProgramCache]: Analyzing trace with hash -782095740, now seen corresponding path program 11 times [2025-02-06 13:11:04,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:11:04,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939196415] [2025-02-06 13:11:04,453 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:11:04,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:11:04,456 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:11:04,458 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:11:04,458 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:11:04,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:04,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:11:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939196415] [2025-02-06 13:11:04,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939196415] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:11:04,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:11:04,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 13:11:04,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904237052] [2025-02-06 13:11:04,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:11:04,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 13:11:04,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:11:04,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 13:11:04,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 13:11:04,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:11:04,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 1023 transitions, 23936 flow. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:04,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:11:04,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:11:04,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:11:06,217 INFO L124 PetriNetUnfolderBase]: 3959/6621 cut-off events. [2025-02-06 13:11:06,218 INFO L125 PetriNetUnfolderBase]: For 290245/290245 co-relation queries the response was YES. [2025-02-06 13:11:06,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69589 conditions, 6621 events. 3959/6621 cut-off events. For 290245/290245 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 40779 event pairs, 207 based on Foata normal form. 8/6629 useless extension candidates. Maximal degree in co-relation 68942. Up to 5504 conditions per place. [2025-02-06 13:11:06,289 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 1075 selfloop transitions, 148 changer transitions 7/1231 dead transitions. [2025-02-06 13:11:06,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1231 transitions, 30605 flow [2025-02-06 13:11:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 13:11:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 13:11:06,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2025-02-06 13:11:06,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45893719806763283 [2025-02-06 13:11:06,291 INFO L175 Difference]: Start difference. First operand has 333 places, 1023 transitions, 23936 flow. Second operand 9 states and 95 transitions. [2025-02-06 13:11:06,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1231 transitions, 30605 flow [2025-02-06 13:11:08,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1231 transitions, 29700 flow, removed 30 selfloop flow, removed 9 redundant places. [2025-02-06 13:11:08,171 INFO L231 Difference]: Finished difference. Result has 334 places, 1095 transitions, 25530 flow [2025-02-06 13:11:08,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=23148, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25530, PETRI_PLACES=334, PETRI_TRANSITIONS=1095} [2025-02-06 13:11:08,173 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 309 predicate places. [2025-02-06 13:11:08,173 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 1095 transitions, 25530 flow [2025-02-06 13:11:08,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:08,173 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:11:08,173 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:11:08,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 13:11:08,174 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:11:08,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:11:08,174 INFO L85 PathProgramCache]: Analyzing trace with hash 108143914, now seen corresponding path program 12 times [2025-02-06 13:11:08,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:11:08,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72639253] [2025-02-06 13:11:08,174 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:11:08,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:11:08,185 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-02-06 13:11:08,193 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:11:08,193 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 13:11:08,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:08,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:11:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72639253] [2025-02-06 13:11:08,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72639253] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:11:08,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990524447] [2025-02-06 13:11:08,274 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:11:08,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:11:08,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:11:08,280 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:11:08,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 13:11:08,310 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-02-06 13:11:08,319 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:11:08,319 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 13:11:08,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:08,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 13:11:08,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:11:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:08,413 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:11:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:08,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990524447] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:11:08,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:11:08,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20 [2025-02-06 13:11:08,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145680515] [2025-02-06 13:11:08,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:11:08,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 13:11:08,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:11:08,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 13:11:08,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2025-02-06 13:11:08,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:11:08,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 1095 transitions, 25530 flow. Second operand has 20 states, 20 states have (on average 6.3) internal successors, (126), 20 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:08,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:11:08,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:11:08,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:11:10,962 INFO L124 PetriNetUnfolderBase]: 4297/7213 cut-off events. [2025-02-06 13:11:10,962 INFO L125 PetriNetUnfolderBase]: For 315679/315679 co-relation queries the response was YES. [2025-02-06 13:11:11,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75891 conditions, 7213 events. 4297/7213 cut-off events. For 315679/315679 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 45888 event pairs, 783 based on Foata normal form. 94/7307 useless extension candidates. Maximal degree in co-relation 75246. Up to 3703 conditions per place. [2025-02-06 13:11:11,037 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 686 selfloop transitions, 639 changer transitions 2/1328 dead transitions. [2025-02-06 13:11:11,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 1328 transitions, 32623 flow [2025-02-06 13:11:11,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 13:11:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-06 13:11:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 233 transitions. [2025-02-06 13:11:11,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44045368620037806 [2025-02-06 13:11:11,039 INFO L175 Difference]: Start difference. First operand has 334 places, 1095 transitions, 25530 flow. Second operand 23 states and 233 transitions. [2025-02-06 13:11:11,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 1328 transitions, 32623 flow [2025-02-06 13:11:13,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 1328 transitions, 32488 flow, removed 15 selfloop flow, removed 3 redundant places. [2025-02-06 13:11:13,628 INFO L231 Difference]: Finished difference. Result has 370 places, 1186 transitions, 30311 flow [2025-02-06 13:11:13,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=25403, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=554, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=30311, PETRI_PLACES=370, PETRI_TRANSITIONS=1186} [2025-02-06 13:11:13,630 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 345 predicate places. [2025-02-06 13:11:13,630 INFO L471 AbstractCegarLoop]: Abstraction has has 370 places, 1186 transitions, 30311 flow [2025-02-06 13:11:13,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.3) internal successors, (126), 20 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:13,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:11:13,631 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:11:13,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 13:11:13,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 13:11:13,835 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:11:13,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:11:13,835 INFO L85 PathProgramCache]: Analyzing trace with hash -210214772, now seen corresponding path program 13 times [2025-02-06 13:11:13,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:11:13,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185718540] [2025-02-06 13:11:13,836 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:11:13,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:11:13,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 13:11:13,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:11:13,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:11:13,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:13,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:11:13,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185718540] [2025-02-06 13:11:13,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185718540] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:11:13,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:11:13,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 13:11:13,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340372141] [2025-02-06 13:11:13,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:11:13,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 13:11:13,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:11:13,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 13:11:13,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 13:11:13,933 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:11:13,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 1186 transitions, 30311 flow. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:13,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:11:13,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:11:13,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:11:16,075 INFO L124 PetriNetUnfolderBase]: 4301/7216 cut-off events. [2025-02-06 13:11:16,076 INFO L125 PetriNetUnfolderBase]: For 395141/395141 co-relation queries the response was YES. [2025-02-06 13:11:16,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83003 conditions, 7216 events. 4301/7216 cut-off events. For 395141/395141 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 45508 event pairs, 281 based on Foata normal form. 2/7218 useless extension candidates. Maximal degree in co-relation 82309. Up to 7004 conditions per place. [2025-02-06 13:11:16,168 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1169 selfloop transitions, 36 changer transitions 4/1210 dead transitions. [2025-02-06 13:11:16,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 1210 transitions, 33226 flow [2025-02-06 13:11:16,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 13:11:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 13:11:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2025-02-06 13:11:16,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40096618357487923 [2025-02-06 13:11:16,170 INFO L175 Difference]: Start difference. First operand has 370 places, 1186 transitions, 30311 flow. Second operand 9 states and 83 transitions. [2025-02-06 13:11:16,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 1210 transitions, 33226 flow [2025-02-06 13:11:19,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 1210 transitions, 32651 flow, removed 237 selfloop flow, removed 4 redundant places. [2025-02-06 13:11:19,024 INFO L231 Difference]: Finished difference. Result has 379 places, 1191 transitions, 29985 flow [2025-02-06 13:11:19,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=29742, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=29985, PETRI_PLACES=379, PETRI_TRANSITIONS=1191} [2025-02-06 13:11:19,025 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 354 predicate places. [2025-02-06 13:11:19,026 INFO L471 AbstractCegarLoop]: Abstraction has has 379 places, 1191 transitions, 29985 flow [2025-02-06 13:11:19,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:19,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:11:19,026 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:11:19,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 13:11:19,026 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:11:19,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:11:19,027 INFO L85 PathProgramCache]: Analyzing trace with hash -748070350, now seen corresponding path program 14 times [2025-02-06 13:11:19,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:11:19,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608163951] [2025-02-06 13:11:19,027 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:11:19,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:11:19,031 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:11:19,034 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:11:19,036 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:11:19,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:19,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:11:19,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608163951] [2025-02-06 13:11:19,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608163951] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:11:19,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:11:19,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 13:11:19,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523085242] [2025-02-06 13:11:19,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:11:19,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 13:11:19,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:11:19,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 13:11:19,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-06 13:11:19,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:11:19,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 1191 transitions, 29985 flow. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:19,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:11:19,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:11:19,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:11:21,367 INFO L124 PetriNetUnfolderBase]: 4377/7336 cut-off events. [2025-02-06 13:11:21,367 INFO L125 PetriNetUnfolderBase]: For 379260/379260 co-relation queries the response was YES. [2025-02-06 13:11:21,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82649 conditions, 7336 events. 4377/7336 cut-off events. For 379260/379260 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 46393 event pairs, 275 based on Foata normal form. 6/7342 useless extension candidates. Maximal degree in co-relation 81950. Up to 6879 conditions per place. [2025-02-06 13:11:21,491 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 1182 selfloop transitions, 65 changer transitions 1/1249 dead transitions. [2025-02-06 13:11:21,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 1249 transitions, 33735 flow [2025-02-06 13:11:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 13:11:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 13:11:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2025-02-06 13:11:21,493 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4396135265700483 [2025-02-06 13:11:21,493 INFO L175 Difference]: Start difference. First operand has 379 places, 1191 transitions, 29985 flow. Second operand 9 states and 91 transitions. [2025-02-06 13:11:21,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 1249 transitions, 33735 flow [2025-02-06 13:11:24,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1249 transitions, 33683 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-02-06 13:11:24,707 INFO L231 Difference]: Finished difference. Result has 382 places, 1203 transitions, 30519 flow [2025-02-06 13:11:24,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=29935, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=30519, PETRI_PLACES=382, PETRI_TRANSITIONS=1203} [2025-02-06 13:11:24,708 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 357 predicate places. [2025-02-06 13:11:24,708 INFO L471 AbstractCegarLoop]: Abstraction has has 382 places, 1203 transitions, 30519 flow [2025-02-06 13:11:24,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:24,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:11:24,709 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:11:24,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 13:11:24,709 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:11:24,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:11:24,710 INFO L85 PathProgramCache]: Analyzing trace with hash -921318042, now seen corresponding path program 15 times [2025-02-06 13:11:24,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:11:24,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92064369] [2025-02-06 13:11:24,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:11:24,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:11:24,712 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 1 equivalence classes. [2025-02-06 13:11:24,717 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 13:11:24,717 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 13:11:24,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:24,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:11:24,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92064369] [2025-02-06 13:11:24,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92064369] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:11:24,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:11:24,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 13:11:24,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613088537] [2025-02-06 13:11:24,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:11:24,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 13:11:24,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:11:24,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 13:11:24,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-06 13:11:24,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:11:24,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1203 transitions, 30519 flow. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:24,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:11:24,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:11:24,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:11:27,008 INFO L124 PetriNetUnfolderBase]: 4358/7309 cut-off events. [2025-02-06 13:11:27,008 INFO L125 PetriNetUnfolderBase]: For 393646/393646 co-relation queries the response was YES. [2025-02-06 13:11:27,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82986 conditions, 7309 events. 4358/7309 cut-off events. For 393646/393646 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 46330 event pairs, 80 based on Foata normal form. 20/7329 useless extension candidates. Maximal degree in co-relation 82287. Up to 4007 conditions per place. [2025-02-06 13:11:27,104 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 668 selfloop transitions, 616 changer transitions 3/1288 dead transitions. [2025-02-06 13:11:27,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 1288 transitions, 34401 flow [2025-02-06 13:11:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 13:11:27,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 13:11:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 124 transitions. [2025-02-06 13:11:27,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41471571906354515 [2025-02-06 13:11:27,106 INFO L175 Difference]: Start difference. First operand has 382 places, 1203 transitions, 30519 flow. Second operand 13 states and 124 transitions. [2025-02-06 13:11:27,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 1288 transitions, 34401 flow [2025-02-06 13:11:30,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 1288 transitions, 34311 flow, removed 19 selfloop flow, removed 5 redundant places. [2025-02-06 13:11:30,217 INFO L231 Difference]: Finished difference. Result has 392 places, 1207 transitions, 32874 flow [2025-02-06 13:11:30,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=30328, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=607, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=32874, PETRI_PLACES=392, PETRI_TRANSITIONS=1207} [2025-02-06 13:11:30,218 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 367 predicate places. [2025-02-06 13:11:30,218 INFO L471 AbstractCegarLoop]: Abstraction has has 392 places, 1207 transitions, 32874 flow [2025-02-06 13:11:30,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:30,219 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:11:30,219 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:11:30,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 13:11:30,219 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:11:30,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:11:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1358713770, now seen corresponding path program 16 times [2025-02-06 13:11:30,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:11:30,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989737833] [2025-02-06 13:11:30,219 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:11:30,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:11:30,222 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 13:11:30,223 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 13:11:30,223 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 13:11:30,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:30,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:11:30,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989737833] [2025-02-06 13:11:30,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989737833] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:11:30,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:11:30,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 13:11:30,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617087732] [2025-02-06 13:11:30,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:11:30,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 13:11:30,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:11:30,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 13:11:30,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 13:11:30,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:11:30,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 1207 transitions, 32874 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:30,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:11:30,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:11:30,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:11:32,569 INFO L124 PetriNetUnfolderBase]: 4327/7221 cut-off events. [2025-02-06 13:11:32,570 INFO L125 PetriNetUnfolderBase]: For 414993/414993 co-relation queries the response was YES. [2025-02-06 13:11:32,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86633 conditions, 7221 events. 4327/7221 cut-off events. For 414993/414993 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 45641 event pairs, 1400 based on Foata normal form. 8/7229 useless extension candidates. Maximal degree in co-relation 85899. Up to 6350 conditions per place. [2025-02-06 13:11:32,668 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 1132 selfloop transitions, 116 changer transitions 0/1249 dead transitions. [2025-02-06 13:11:32,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 1249 transitions, 36134 flow [2025-02-06 13:11:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 13:11:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 13:11:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2025-02-06 13:11:32,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2025-02-06 13:11:32,670 INFO L175 Difference]: Start difference. First operand has 392 places, 1207 transitions, 32874 flow. Second operand 8 states and 89 transitions. [2025-02-06 13:11:32,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 1249 transitions, 36134 flow [2025-02-06 13:11:35,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 1249 transitions, 36022 flow, removed 7 selfloop flow, removed 9 redundant places. [2025-02-06 13:11:35,878 INFO L231 Difference]: Finished difference. Result has 391 places, 1210 transitions, 33148 flow [2025-02-06 13:11:35,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=32762, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1093, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33148, PETRI_PLACES=391, PETRI_TRANSITIONS=1210} [2025-02-06 13:11:35,879 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 366 predicate places. [2025-02-06 13:11:35,879 INFO L471 AbstractCegarLoop]: Abstraction has has 391 places, 1210 transitions, 33148 flow [2025-02-06 13:11:35,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:35,880 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:11:35,880 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:11:35,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 13:11:35,880 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:11:35,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:11:35,880 INFO L85 PathProgramCache]: Analyzing trace with hash -887064680, now seen corresponding path program 17 times [2025-02-06 13:11:35,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:11:35,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451174577] [2025-02-06 13:11:35,880 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:11:35,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:11:35,885 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-02-06 13:11:35,889 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 13:11:35,889 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 13:11:35,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:35,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:11:35,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451174577] [2025-02-06 13:11:35,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451174577] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:11:35,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169767797] [2025-02-06 13:11:35,934 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:11:35,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:11:35,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:11:35,938 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:11:35,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 13:11:35,965 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-02-06 13:11:35,977 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 13:11:35,977 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 13:11:35,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:35,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 13:11:35,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:11:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:36,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:11:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:36,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169767797] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:11:36,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:11:36,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 11 [2025-02-06 13:11:36,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194027765] [2025-02-06 13:11:36,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:11:36,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 13:11:36,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:11:36,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 13:11:36,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-06 13:11:36,128 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2025-02-06 13:11:36,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 1210 transitions, 33148 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:36,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:11:36,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2025-02-06 13:11:36,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:11:40,040 INFO L124 PetriNetUnfolderBase]: 7496/12944 cut-off events. [2025-02-06 13:11:40,040 INFO L125 PetriNetUnfolderBase]: For 757785/757905 co-relation queries the response was YES. [2025-02-06 13:11:40,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155458 conditions, 12944 events. 7496/12944 cut-off events. For 757785/757905 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 94940 event pairs, 240 based on Foata normal form. 43/12926 useless extension candidates. Maximal degree in co-relation 154228. Up to 3660 conditions per place. [2025-02-06 13:11:40,286 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 1114 selfloop transitions, 1159 changer transitions 197/2529 dead transitions. [2025-02-06 13:11:40,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 2529 transitions, 74256 flow [2025-02-06 13:11:40,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 13:11:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 13:11:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2025-02-06 13:11:40,287 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6183574879227053 [2025-02-06 13:11:40,287 INFO L175 Difference]: Start difference. First operand has 391 places, 1210 transitions, 33148 flow. Second operand 9 states and 128 transitions. [2025-02-06 13:11:40,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 2529 transitions, 74256 flow [2025-02-06 13:11:49,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 2529 transitions, 73818 flow, removed 28 selfloop flow, removed 5 redundant places. [2025-02-06 13:11:49,657 INFO L231 Difference]: Finished difference. Result has 401 places, 1893 transitions, 59178 flow [2025-02-06 13:11:49,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=32956, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=596, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=59178, PETRI_PLACES=401, PETRI_TRANSITIONS=1893} [2025-02-06 13:11:49,659 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 376 predicate places. [2025-02-06 13:11:49,659 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 1893 transitions, 59178 flow [2025-02-06 13:11:49,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:49,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:11:49,659 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:11:49,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 13:11:49,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:11:49,860 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:11:49,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:11:49,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1037598394, now seen corresponding path program 18 times [2025-02-06 13:11:49,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:11:49,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421460969] [2025-02-06 13:11:49,861 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:11:49,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:11:49,865 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 3 equivalence classes. [2025-02-06 13:11:49,871 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 13:11:49,875 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 13:11:49,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:49,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:11:49,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421460969] [2025-02-06 13:11:49,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421460969] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:11:49,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904098015] [2025-02-06 13:11:49,929 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:11:49,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:11:49,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:11:49,931 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:11:49,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 13:11:49,967 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 3 equivalence classes. [2025-02-06 13:11:49,977 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 13:11:49,977 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 13:11:49,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:11:49,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 13:11:49,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:11:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:50,003 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:11:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:11:50,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904098015] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:11:50,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:11:50,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2025-02-06 13:11:50,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150796645] [2025-02-06 13:11:50,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:11:50,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:11:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:11:50,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:11:50,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:11:50,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2025-02-06 13:11:50,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 1893 transitions, 59178 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:11:50,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:11:50,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2025-02-06 13:11:50,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:11:55,676 INFO L124 PetriNetUnfolderBase]: 7365/12816 cut-off events. [2025-02-06 13:11:55,676 INFO L125 PetriNetUnfolderBase]: For 832982/833118 co-relation queries the response was YES. [2025-02-06 13:11:55,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162184 conditions, 12816 events. 7365/12816 cut-off events. For 832982/833118 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 94838 event pairs, 289 based on Foata normal form. 104/12851 useless extension candidates. Maximal degree in co-relation 160883. Up to 5086 conditions per place. [2025-02-06 13:11:55,839 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 785 selfloop transitions, 1239 changer transitions 41/2124 dead transitions. [2025-02-06 13:11:55,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 2124 transitions, 68719 flow [2025-02-06 13:11:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:11:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:11:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2025-02-06 13:11:55,841 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2025-02-06 13:11:55,841 INFO L175 Difference]: Start difference. First operand has 401 places, 1893 transitions, 59178 flow. Second operand 7 states and 98 transitions. [2025-02-06 13:11:55,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 2124 transitions, 68719 flow [2025-02-06 13:12:05,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 2124 transitions, 68557 flow, removed 81 selfloop flow, removed 0 redundant places. [2025-02-06 13:12:05,207 INFO L231 Difference]: Finished difference. Result has 412 places, 1968 transitions, 66506 flow [2025-02-06 13:12:05,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=59002, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1892, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=66506, PETRI_PLACES=412, PETRI_TRANSITIONS=1968} [2025-02-06 13:12:05,208 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 387 predicate places. [2025-02-06 13:12:05,208 INFO L471 AbstractCegarLoop]: Abstraction has has 412 places, 1968 transitions, 66506 flow [2025-02-06 13:12:05,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:12:05,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:12:05,209 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:12:05,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 13:12:05,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:12:05,409 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:12:05,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:12:05,410 INFO L85 PathProgramCache]: Analyzing trace with hash 636766606, now seen corresponding path program 19 times [2025-02-06 13:12:05,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:12:05,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255030630] [2025-02-06 13:12:05,410 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:12:05,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:12:05,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 13:12:05,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 13:12:05,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:12:05,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:12:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 13:12:05,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:12:05,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255030630] [2025-02-06 13:12:05,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255030630] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:12:05,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473595826] [2025-02-06 13:12:05,527 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:12:05,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:12:05,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:12:05,532 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:12:05,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 13:12:05,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 13:12:05,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 13:12:05,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:12:05,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:12:05,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 13:12:05,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:12:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 13:12:05,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:12:05,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:12:05,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473595826] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:12:05,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:12:05,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-02-06 13:12:05,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198237985] [2025-02-06 13:12:05,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:12:05,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 13:12:05,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:12:05,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 13:12:05,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2025-02-06 13:12:05,825 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-02-06 13:12:05,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 1968 transitions, 66506 flow. Second operand has 24 states, 24 states have (on average 6.291666666666667) internal successors, (151), 24 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:12:05,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:12:05,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-02-06 13:12:05,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:12:15,374 INFO L124 PetriNetUnfolderBase]: 10795/18030 cut-off events. [2025-02-06 13:12:15,375 INFO L125 PetriNetUnfolderBase]: For 1451454/1451454 co-relation queries the response was YES. [2025-02-06 13:12:15,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249020 conditions, 18030 events. 10795/18030 cut-off events. For 1451454/1451454 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 128192 event pairs, 141 based on Foata normal form. 438/18468 useless extension candidates. Maximal degree in co-relation 247312. Up to 6639 conditions per place. [2025-02-06 13:12:15,687 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 1110 selfloop transitions, 1831 changer transitions 26/2968 dead transitions. [2025-02-06 13:12:15,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 2968 transitions, 104003 flow [2025-02-06 13:12:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-06 13:12:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-02-06 13:12:15,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 325 transitions. [2025-02-06 13:12:15,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4281949934123847 [2025-02-06 13:12:15,689 INFO L175 Difference]: Start difference. First operand has 412 places, 1968 transitions, 66506 flow. Second operand 33 states and 325 transitions. [2025-02-06 13:12:15,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 2968 transitions, 104003 flow