./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-figure1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 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-figure1.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 facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:08:11,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:08:11,929 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 01:08:11,935 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:08:11,936 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:08:11,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:08:11,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:08:11,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:08:11,951 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:08:11,951 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:08:11,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:08:11,952 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:08:11,952 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:08:11,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:08:11,952 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:08:11,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:08:11,952 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:08:11,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:08:11,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:08:11,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:08:11,953 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:08:11,953 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:08:11,953 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:08:11,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:08:11,953 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:08:11,953 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:08:11,953 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:08:11,953 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:08:11,953 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:08:11,953 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:08:11,953 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:08:11,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:08:11,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:08:11,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:08:11,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:08:11,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:08:11,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:08:11,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:08:11,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:08:11,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:08:11,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:08:11,954 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:08:11,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:08:11,955 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:08:11,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:08:11,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:08:11,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:08:11,955 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 -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2025-01-10 01:08:12,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:08:12,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:08:12,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:08:12,182 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:08:12,183 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:08:12,183 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2025-01-10 01:08:13,358 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1af9e96bc/b269723cf14e46ecb21aee6967aba621/FLAGf5ad6c069 [2025-01-10 01:08:13,638 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:08:13,638 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2025-01-10 01:08:13,665 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1af9e96bc/b269723cf14e46ecb21aee6967aba621/FLAGf5ad6c069 [2025-01-10 01:08:13,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1af9e96bc/b269723cf14e46ecb21aee6967aba621 [2025-01-10 01:08:13,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:08:13,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:08:13,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:08:13,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:08:13,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:08:13,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ddd863d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13, skipping insertion in model container [2025-01-10 01:08:13,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,712 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:08:13,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:08:13,832 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:08:13,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:08:13,857 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:08:13,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13 WrapperNode [2025-01-10 01:08:13,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:08:13,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:08:13,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:08:13,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:08:13,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,880 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2025-01-10 01:08:13,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:08:13,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:08:13,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:08:13,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:08:13,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,893 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,901 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]. [2025-01-10 01:08:13,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,906 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,913 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:08:13,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:08:13,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:08:13,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:08:13,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (1/1) ... [2025-01-10 01:08:13,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:08:13,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:13,943 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) [2025-01-10 01:08:13,956 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 [2025-01-10 01:08:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:08:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 01:08:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 01:08:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 01:08:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 01:08:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:08:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:08:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:08:13,971 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 01:08:14,033 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:08:14,034 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:08:14,150 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:08:14,150 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:08:14,233 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:08:14,236 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:08:14,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:08:14 BoogieIcfgContainer [2025-01-10 01:08:14,237 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:08:14,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:08:14,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:08:14,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:08:14,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:08:13" (1/3) ... [2025-01-10 01:08:14,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f041987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:08:14, skipping insertion in model container [2025-01-10 01:08:14,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:08:13" (2/3) ... [2025-01-10 01:08:14,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f041987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:08:14, skipping insertion in model container [2025-01-10 01:08:14,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:08:14" (3/3) ... [2025-01-10 01:08:14,247 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2025-01-10 01:08:14,262 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:08:14,263 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-figure1.wvr.c that has 3 procedures, 23 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-01-10 01:08:14,264 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:08:14,298 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 01:08:14,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2025-01-10 01:08:14,349 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2025-01-10 01:08:14,355 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:08:14,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2025-01-10 01:08:14,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2025-01-10 01:08:14,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2025-01-10 01:08:14,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:08:14,378 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;@18608eb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:08:14,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-10 01:08:14,388 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:08:14,388 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2025-01-10 01:08:14,389 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:08:14,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:14,389 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:14,389 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:14,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:14,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1747987113, now seen corresponding path program 1 times [2025-01-10 01:08:14,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:14,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385638700] [2025-01-10 01:08:14,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:08:14,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:14,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:08:14,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:08:14,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:08:14,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:14,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:14,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385638700] [2025-01-10 01:08:14,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385638700] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:08:14,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:08:14,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 01:08:14,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361567924] [2025-01-10 01:08:14,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:08:14,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:08:14,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:14,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:08:14,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:08:14,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-10 01:08:14,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2025-01-10 01:08:14,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:14,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-10 01:08:14,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:14,716 INFO L124 PetriNetUnfolderBase]: 86/168 cut-off events. [2025-01-10 01:08:14,716 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2025-01-10 01:08:14,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 168 events. 86/168 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 502 event pairs, 32 based on Foata normal form. 2/162 useless extension candidates. Maximal degree in co-relation 297. Up to 108 conditions per place. [2025-01-10 01:08:14,720 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 21 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2025-01-10 01:08:14,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 129 flow [2025-01-10 01:08:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:08:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:08:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-01-10 01:08:14,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-01-10 01:08:14,729 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 44 transitions. [2025-01-10 01:08:14,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 129 flow [2025-01-10 01:08:14,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 01:08:14,736 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2025-01-10 01:08:14,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2025-01-10 01:08:14,741 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2025-01-10 01:08:14,741 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2025-01-10 01:08:14,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2025-01-10 01:08:14,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:14,743 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:14,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:08:14,743 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:14,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:14,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1811123292, now seen corresponding path program 1 times [2025-01-10 01:08:14,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:14,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893870870] [2025-01-10 01:08:14,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:08:14,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:14,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 01:08:14,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:08:14,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:08:14,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:14,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:14,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893870870] [2025-01-10 01:08:14,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893870870] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:08:14,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:08:14,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:08:14,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239683841] [2025-01-10 01:08:14,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:08:14,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:08:14,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:14,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:08:14,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:08:14,913 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:14,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2025-01-10 01:08:14,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:14,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:14,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:15,050 INFO L124 PetriNetUnfolderBase]: 151/272 cut-off events. [2025-01-10 01:08:15,050 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-01-10 01:08:15,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 272 events. 151/272 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 989 event pairs, 59 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 195. Up to 187 conditions per place. [2025-01-10 01:08:15,052 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 33 selfloop transitions, 7 changer transitions 3/44 dead transitions. [2025-01-10 01:08:15,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 44 transitions, 201 flow [2025-01-10 01:08:15,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:08:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:08:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2025-01-10 01:08:15,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-01-10 01:08:15,053 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 64 transitions. [2025-01-10 01:08:15,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 44 transitions, 201 flow [2025-01-10 01:08:15,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 44 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:08:15,057 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 106 flow [2025-01-10 01:08:15,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2025-01-10 01:08:15,058 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2025-01-10 01:08:15,058 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 106 flow [2025-01-10 01:08:15,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2025-01-10 01:08:15,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:15,058 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:15,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 01:08:15,058 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:15,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1759176850, now seen corresponding path program 2 times [2025-01-10 01:08:15,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:15,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261782885] [2025-01-10 01:08:15,059 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:08:15,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:15,065 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:08:15,071 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:08:15,071 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:08:15,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:15,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:15,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261782885] [2025-01-10 01:08:15,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261782885] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:15,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090974073] [2025-01-10 01:08:15,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:08:15,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:15,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:15,133 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) [2025-01-10 01:08:15,135 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 [2025-01-10 01:08:15,169 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:08:15,180 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:08:15,180 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:08:15,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:15,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 01:08:15,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:15,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:15,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090974073] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:15,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:15,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2025-01-10 01:08:15,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184640558] [2025-01-10 01:08:15,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:15,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 01:08:15,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:15,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 01:08:15,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-10 01:08:15,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:15,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 106 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:08:15,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:15,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:15,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:15,422 INFO L124 PetriNetUnfolderBase]: 185/329 cut-off events. [2025-01-10 01:08:15,423 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2025-01-10 01:08:15,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 329 events. 185/329 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1216 event pairs, 4 based on Foata normal form. 13/342 useless extension candidates. Maximal degree in co-relation 435. Up to 78 conditions per place. [2025-01-10 01:08:15,425 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 56 selfloop transitions, 24 changer transitions 1/82 dead transitions. [2025-01-10 01:08:15,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 82 transitions, 465 flow [2025-01-10 01:08:15,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 01:08:15,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-10 01:08:15,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2025-01-10 01:08:15,426 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2025-01-10 01:08:15,427 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 106 flow. Second operand 12 states and 126 transitions. [2025-01-10 01:08:15,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 82 transitions, 465 flow [2025-01-10 01:08:15,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 82 transitions, 463 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-01-10 01:08:15,429 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 287 flow [2025-01-10 01:08:15,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=287, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2025-01-10 01:08:15,430 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2025-01-10 01:08:15,430 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 287 flow [2025-01-10 01:08:15,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:08:15,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:15,430 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:15,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 01:08:15,635 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 [2025-01-10 01:08:15,636 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:15,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:15,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1665820660, now seen corresponding path program 3 times [2025-01-10 01:08:15,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:15,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581129738] [2025-01-10 01:08:15,637 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:08:15,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:15,641 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:08:15,646 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:08:15,646 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:08:15,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:15,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:15,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581129738] [2025-01-10 01:08:15,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581129738] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:08:15,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:08:15,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:08:15,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258429618] [2025-01-10 01:08:15,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:08:15,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:08:15,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:15,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:08:15,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:08:15,697 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:15,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2025-01-10 01:08:15,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:15,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:15,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:15,821 INFO L124 PetriNetUnfolderBase]: 248/441 cut-off events. [2025-01-10 01:08:15,821 INFO L125 PetriNetUnfolderBase]: For 938/938 co-relation queries the response was YES. [2025-01-10 01:08:15,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1671 conditions, 441 events. 248/441 cut-off events. For 938/938 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1641 event pairs, 70 based on Foata normal form. 2/443 useless extension candidates. Maximal degree in co-relation 1250. Up to 194 conditions per place. [2025-01-10 01:08:15,824 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 59 selfloop transitions, 14 changer transitions 2/76 dead transitions. [2025-01-10 01:08:15,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 633 flow [2025-01-10 01:08:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:08:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:08:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2025-01-10 01:08:15,828 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-01-10 01:08:15,829 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 287 flow. Second operand 5 states and 60 transitions. [2025-01-10 01:08:15,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 633 flow [2025-01-10 01:08:15,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 581 flow, removed 20 selfloop flow, removed 1 redundant places. [2025-01-10 01:08:15,837 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 335 flow [2025-01-10 01:08:15,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2025-01-10 01:08:15,837 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2025-01-10 01:08:15,838 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 335 flow [2025-01-10 01:08:15,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2025-01-10 01:08:15,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:15,838 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:15,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 01:08:15,838 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:15,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:15,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1601881902, now seen corresponding path program 4 times [2025-01-10 01:08:15,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:15,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730329398] [2025-01-10 01:08:15,840 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:08:15,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:15,844 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:08:15,847 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 15 of 16 statements. [2025-01-10 01:08:15,847 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:08:15,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:15,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:15,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730329398] [2025-01-10 01:08:15,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730329398] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:15,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932064082] [2025-01-10 01:08:15,878 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:08:15,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:15,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:15,880 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) [2025-01-10 01:08:15,883 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 [2025-01-10 01:08:15,909 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:08:15,916 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 15 of 16 statements. [2025-01-10 01:08:15,916 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:08:15,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:15,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 01:08:15,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:15,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:15,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932064082] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:15,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:15,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-01-10 01:08:15,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413111324] [2025-01-10 01:08:15,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:15,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:08:15,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:15,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:08:15,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-10 01:08:15,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:15,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 335 flow. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2025-01-10 01:08:15,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:15,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:15,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:16,125 INFO L124 PetriNetUnfolderBase]: 319/560 cut-off events. [2025-01-10 01:08:16,125 INFO L125 PetriNetUnfolderBase]: For 1492/1492 co-relation queries the response was YES. [2025-01-10 01:08:16,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 560 events. 319/560 cut-off events. For 1492/1492 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2234 event pairs, 38 based on Foata normal form. 13/573 useless extension candidates. Maximal degree in co-relation 1982. Up to 169 conditions per place. [2025-01-10 01:08:16,129 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 58 selfloop transitions, 33 changer transitions 1/93 dead transitions. [2025-01-10 01:08:16,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 763 flow [2025-01-10 01:08:16,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:08:16,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:08:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2025-01-10 01:08:16,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2025-01-10 01:08:16,130 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 335 flow. Second operand 9 states and 98 transitions. [2025-01-10 01:08:16,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 763 flow [2025-01-10 01:08:16,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 93 transitions, 735 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-01-10 01:08:16,136 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 555 flow [2025-01-10 01:08:16,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=555, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2025-01-10 01:08:16,137 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2025-01-10 01:08:16,137 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 555 flow [2025-01-10 01:08:16,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2025-01-10 01:08:16,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:16,137 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:16,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 01:08:16,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:16,338 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:16,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:16,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1987325936, now seen corresponding path program 5 times [2025-01-10 01:08:16,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:16,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523243310] [2025-01-10 01:08:16,339 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:08:16,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:16,355 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:08:16,362 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:08:16,363 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:08:16,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:16,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:16,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:16,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523243310] [2025-01-10 01:08:16,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523243310] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:16,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13186612] [2025-01-10 01:08:16,451 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:08:16,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:16,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:16,453 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) [2025-01-10 01:08:16,457 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 [2025-01-10 01:08:16,505 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:08:16,521 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:08:16,522 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:08:16,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:16,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 01:08:16,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:16,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:16,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13186612] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:16,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:16,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-01-10 01:08:16,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558884791] [2025-01-10 01:08:16,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:16,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 01:08:16,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:16,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 01:08:16,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-10 01:08:16,641 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:16,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 555 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 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) [2025-01-10 01:08:16,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:16,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:16,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:16,768 INFO L124 PetriNetUnfolderBase]: 305/544 cut-off events. [2025-01-10 01:08:16,768 INFO L125 PetriNetUnfolderBase]: For 2471/2471 co-relation queries the response was YES. [2025-01-10 01:08:16,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2321 conditions, 544 events. 305/544 cut-off events. For 2471/2471 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2160 event pairs, 75 based on Foata normal form. 13/557 useless extension candidates. Maximal degree in co-relation 1976. Up to 187 conditions per place. [2025-01-10 01:08:16,772 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 62 selfloop transitions, 33 changer transitions 1/97 dead transitions. [2025-01-10 01:08:16,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 97 transitions, 974 flow [2025-01-10 01:08:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:08:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:08:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2025-01-10 01:08:16,774 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2025-01-10 01:08:16,774 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 555 flow. Second operand 7 states and 83 transitions. [2025-01-10 01:08:16,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 97 transitions, 974 flow [2025-01-10 01:08:16,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 914 flow, removed 28 selfloop flow, removed 2 redundant places. [2025-01-10 01:08:16,784 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 702 flow [2025-01-10 01:08:16,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=702, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2025-01-10 01:08:16,785 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 45 predicate places. [2025-01-10 01:08:16,786 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 702 flow [2025-01-10 01:08:16,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 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) [2025-01-10 01:08:16,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:16,786 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:16,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 01:08:16,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:16,990 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:16,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:16,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1124372774, now seen corresponding path program 6 times [2025-01-10 01:08:16,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:16,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027617352] [2025-01-10 01:08:16,991 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:08:16,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:16,997 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-01-10 01:08:17,001 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 01:08:17,002 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:08:17,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:17,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:17,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027617352] [2025-01-10 01:08:17,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027617352] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:08:17,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:08:17,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:08:17,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375546958] [2025-01-10 01:08:17,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:08:17,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:08:17,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:17,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:08:17,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:08:17,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:17,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 702 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2025-01-10 01:08:17,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:17,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:17,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:17,117 INFO L124 PetriNetUnfolderBase]: 296/517 cut-off events. [2025-01-10 01:08:17,117 INFO L125 PetriNetUnfolderBase]: For 2744/2744 co-relation queries the response was YES. [2025-01-10 01:08:17,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2324 conditions, 517 events. 296/517 cut-off events. For 2744/2744 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1956 event pairs, 89 based on Foata normal form. 2/519 useless extension candidates. Maximal degree in co-relation 2074. Up to 287 conditions per place. [2025-01-10 01:08:17,120 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 59 selfloop transitions, 19 changer transitions 2/81 dead transitions. [2025-01-10 01:08:17,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 913 flow [2025-01-10 01:08:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:08:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:08:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2025-01-10 01:08:17,120 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2025-01-10 01:08:17,121 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 702 flow. Second operand 5 states and 58 transitions. [2025-01-10 01:08:17,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 913 flow [2025-01-10 01:08:17,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 81 transitions, 820 flow, removed 14 selfloop flow, removed 7 redundant places. [2025-01-10 01:08:17,128 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 663 flow [2025-01-10 01:08:17,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=663, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2025-01-10 01:08:17,128 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2025-01-10 01:08:17,128 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 663 flow [2025-01-10 01:08:17,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2025-01-10 01:08:17,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:17,128 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:17,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 01:08:17,129 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:17,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:17,129 INFO L85 PathProgramCache]: Analyzing trace with hash 41801215, now seen corresponding path program 1 times [2025-01-10 01:08:17,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:17,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489894905] [2025-01-10 01:08:17,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:08:17,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:17,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:08:17,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:08:17,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:08:17,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:17,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:17,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489894905] [2025-01-10 01:08:17,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489894905] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:17,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195910973] [2025-01-10 01:08:17,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:08:17,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:17,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:17,203 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) [2025-01-10 01:08:17,205 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 [2025-01-10 01:08:17,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:08:17,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:08:17,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:08:17,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:17,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 01:08:17,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:17,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:08:17,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195910973] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:08:17,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 01:08:17,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 5 [2025-01-10 01:08:17,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231231754] [2025-01-10 01:08:17,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:08:17,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:08:17,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:17,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:08:17,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:08:17,266 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-10 01:08:17,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 663 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:08:17,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:17,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-10 01:08:17,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:17,373 INFO L124 PetriNetUnfolderBase]: 444/820 cut-off events. [2025-01-10 01:08:17,374 INFO L125 PetriNetUnfolderBase]: For 3944/3949 co-relation queries the response was YES. [2025-01-10 01:08:17,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 820 events. 444/820 cut-off events. For 3944/3949 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3755 event pairs, 66 based on Foata normal form. 12/831 useless extension candidates. Maximal degree in co-relation 2532. Up to 371 conditions per place. [2025-01-10 01:08:17,379 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 102 selfloop transitions, 5 changer transitions 19/133 dead transitions. [2025-01-10 01:08:17,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 133 transitions, 1495 flow [2025-01-10 01:08:17,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:08:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:08:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2025-01-10 01:08:17,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-10 01:08:17,380 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 663 flow. Second operand 4 states and 64 transitions. [2025-01-10 01:08:17,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 133 transitions, 1495 flow [2025-01-10 01:08:17,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 1459 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-01-10 01:08:17,389 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 653 flow [2025-01-10 01:08:17,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=653, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2025-01-10 01:08:17,390 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 45 predicate places. [2025-01-10 01:08:17,390 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 653 flow [2025-01-10 01:08:17,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:08:17,390 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:17,390 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:17,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 01:08:17,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-10 01:08:17,591 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:17,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:17,592 INFO L85 PathProgramCache]: Analyzing trace with hash -671862474, now seen corresponding path program 2 times [2025-01-10 01:08:17,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:17,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188743233] [2025-01-10 01:08:17,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:08:17,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:17,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:17,606 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:17,606 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:08:17,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:17,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:17,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:17,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188743233] [2025-01-10 01:08:17,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188743233] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:17,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449697550] [2025-01-10 01:08:17,692 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:08:17,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:17,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:17,694 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) [2025-01-10 01:08:17,695 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 [2025-01-10 01:08:17,724 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:17,737 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:17,738 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:08:17,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:17,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:08:17,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:17,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:17,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:17,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449697550] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:17,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:17,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2025-01-10 01:08:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793946772] [2025-01-10 01:08:17,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:17,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 01:08:17,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:17,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 01:08:17,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-01-10 01:08:17,860 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:17,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 653 flow. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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) [2025-01-10 01:08:17,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:17,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:17,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:18,363 INFO L124 PetriNetUnfolderBase]: 1036/1715 cut-off events. [2025-01-10 01:08:18,363 INFO L125 PetriNetUnfolderBase]: For 8208/8208 co-relation queries the response was YES. [2025-01-10 01:08:18,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7825 conditions, 1715 events. 1036/1715 cut-off events. For 8208/8208 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7724 event pairs, 44 based on Foata normal form. 56/1771 useless extension candidates. Maximal degree in co-relation 5835. Up to 323 conditions per place. [2025-01-10 01:08:18,374 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 133 selfloop transitions, 95 changer transitions 8/237 dead transitions. [2025-01-10 01:08:18,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 237 transitions, 2319 flow [2025-01-10 01:08:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-10 01:08:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-01-10 01:08:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 277 transitions. [2025-01-10 01:08:18,376 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4439102564102564 [2025-01-10 01:08:18,376 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 653 flow. Second operand 26 states and 277 transitions. [2025-01-10 01:08:18,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 237 transitions, 2319 flow [2025-01-10 01:08:18,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 237 transitions, 2319 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 01:08:18,391 INFO L231 Difference]: Finished difference. Result has 112 places, 124 transitions, 1545 flow [2025-01-10 01:08:18,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1545, PETRI_PLACES=112, PETRI_TRANSITIONS=124} [2025-01-10 01:08:18,392 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 86 predicate places. [2025-01-10 01:08:18,392 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 124 transitions, 1545 flow [2025-01-10 01:08:18,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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) [2025-01-10 01:08:18,392 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:18,392 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:18,398 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 [2025-01-10 01:08:18,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:18,593 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:18,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2068293452, now seen corresponding path program 3 times [2025-01-10 01:08:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:18,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910185672] [2025-01-10 01:08:18,594 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:08:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:18,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:18,601 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:18,601 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:08:18,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:18,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:18,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910185672] [2025-01-10 01:08:18,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910185672] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:18,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338074162] [2025-01-10 01:08:18,654 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:08:18,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:18,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:18,658 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) [2025-01-10 01:08:18,659 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 [2025-01-10 01:08:18,684 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:18,695 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:18,695 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:08:18,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:18,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:08:18,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:18,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:18,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338074162] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:18,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:18,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-01-10 01:08:18,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832168093] [2025-01-10 01:08:18,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:18,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 01:08:18,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:18,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 01:08:18,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-01-10 01:08:18,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:18,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 124 transitions, 1545 flow. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 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) [2025-01-10 01:08:18,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:18,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:18,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:19,201 INFO L124 PetriNetUnfolderBase]: 1418/2336 cut-off events. [2025-01-10 01:08:19,202 INFO L125 PetriNetUnfolderBase]: For 29962/29962 co-relation queries the response was YES. [2025-01-10 01:08:19,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14817 conditions, 2336 events. 1418/2336 cut-off events. For 29962/29962 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 11254 event pairs, 139 based on Foata normal form. 18/2354 useless extension candidates. Maximal degree in co-relation 12489. Up to 508 conditions per place. [2025-01-10 01:08:19,227 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 147 selfloop transitions, 87 changer transitions 3/238 dead transitions. [2025-01-10 01:08:19,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 238 transitions, 3216 flow [2025-01-10 01:08:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 01:08:19,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-10 01:08:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 185 transitions. [2025-01-10 01:08:19,229 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2025-01-10 01:08:19,229 INFO L175 Difference]: Start difference. First operand has 112 places, 124 transitions, 1545 flow. Second operand 17 states and 185 transitions. [2025-01-10 01:08:19,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 238 transitions, 3216 flow [2025-01-10 01:08:19,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 238 transitions, 3080 flow, removed 52 selfloop flow, removed 3 redundant places. [2025-01-10 01:08:19,302 INFO L231 Difference]: Finished difference. Result has 129 places, 159 transitions, 2192 flow [2025-01-10 01:08:19,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2192, PETRI_PLACES=129, PETRI_TRANSITIONS=159} [2025-01-10 01:08:19,303 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 103 predicate places. [2025-01-10 01:08:19,303 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 159 transitions, 2192 flow [2025-01-10 01:08:19,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 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) [2025-01-10 01:08:19,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:19,304 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:19,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 01:08:19,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-10 01:08:19,505 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:19,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:19,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1176103832, now seen corresponding path program 4 times [2025-01-10 01:08:19,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:19,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365532604] [2025-01-10 01:08:19,506 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:08:19,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:19,509 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:19,512 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 21 of 22 statements. [2025-01-10 01:08:19,512 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:08:19,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:19,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:19,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365532604] [2025-01-10 01:08:19,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365532604] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:19,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118511180] [2025-01-10 01:08:19,554 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:08:19,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:19,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:19,558 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) [2025-01-10 01:08:19,560 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 [2025-01-10 01:08:19,582 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:19,589 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 21 of 22 statements. [2025-01-10 01:08:19,589 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:08:19,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:19,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:08:19,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:19,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:19,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118511180] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:19,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:19,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2025-01-10 01:08:19,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278629685] [2025-01-10 01:08:19,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:19,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 01:08:19,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:19,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 01:08:19,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-01-10 01:08:19,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:19,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 159 transitions, 2192 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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) [2025-01-10 01:08:19,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:19,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:19,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:20,192 INFO L124 PetriNetUnfolderBase]: 1715/2831 cut-off events. [2025-01-10 01:08:20,192 INFO L125 PetriNetUnfolderBase]: For 48456/48456 co-relation queries the response was YES. [2025-01-10 01:08:20,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19206 conditions, 2831 events. 1715/2831 cut-off events. For 48456/48456 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14295 event pairs, 100 based on Foata normal form. 30/2861 useless extension candidates. Maximal degree in co-relation 15825. Up to 798 conditions per place. [2025-01-10 01:08:20,216 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 133 selfloop transitions, 136 changer transitions 24/294 dead transitions. [2025-01-10 01:08:20,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 294 transitions, 4323 flow [2025-01-10 01:08:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 01:08:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-01-10 01:08:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 159 transitions. [2025-01-10 01:08:20,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2025-01-10 01:08:20,218 INFO L175 Difference]: Start difference. First operand has 129 places, 159 transitions, 2192 flow. Second operand 15 states and 159 transitions. [2025-01-10 01:08:20,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 294 transitions, 4323 flow [2025-01-10 01:08:20,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 294 transitions, 3839 flow, removed 229 selfloop flow, removed 3 redundant places. [2025-01-10 01:08:20,322 INFO L231 Difference]: Finished difference. Result has 147 places, 204 transitions, 3018 flow [2025-01-10 01:08:20,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3018, PETRI_PLACES=147, PETRI_TRANSITIONS=204} [2025-01-10 01:08:20,322 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 121 predicate places. [2025-01-10 01:08:20,322 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 204 transitions, 3018 flow [2025-01-10 01:08:20,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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) [2025-01-10 01:08:20,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:20,323 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:20,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 01:08:20,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:20,523 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:20,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash -67340634, now seen corresponding path program 5 times [2025-01-10 01:08:20,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:20,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241907834] [2025-01-10 01:08:20,524 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:08:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:20,528 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:20,531 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:20,531 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:08:20,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:20,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:20,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:20,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241907834] [2025-01-10 01:08:20,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241907834] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:20,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426701265] [2025-01-10 01:08:20,581 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:08:20,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:20,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:20,586 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) [2025-01-10 01:08:20,587 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 [2025-01-10 01:08:20,610 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:20,619 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:20,619 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:08:20,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:20,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:08:20,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:20,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:20,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426701265] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:20,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:20,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2025-01-10 01:08:20,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051753918] [2025-01-10 01:08:20,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:20,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 01:08:20,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:20,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 01:08:20,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-01-10 01:08:20,733 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:20,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 204 transitions, 3018 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) [2025-01-10 01:08:20,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:20,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:20,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:21,477 INFO L124 PetriNetUnfolderBase]: 2099/3446 cut-off events. [2025-01-10 01:08:21,477 INFO L125 PetriNetUnfolderBase]: For 68372/68372 co-relation queries the response was YES. [2025-01-10 01:08:21,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24007 conditions, 3446 events. 2099/3446 cut-off events. For 68372/68372 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 18090 event pairs, 97 based on Foata normal form. 52/3498 useless extension candidates. Maximal degree in co-relation 22848. Up to 711 conditions per place. [2025-01-10 01:08:21,502 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 168 selfloop transitions, 194 changer transitions 2/365 dead transitions. [2025-01-10 01:08:21,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 365 transitions, 5657 flow [2025-01-10 01:08:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-10 01:08:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-01-10 01:08:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 249 transitions. [2025-01-10 01:08:21,504 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45108695652173914 [2025-01-10 01:08:21,505 INFO L175 Difference]: Start difference. First operand has 147 places, 204 transitions, 3018 flow. Second operand 23 states and 249 transitions. [2025-01-10 01:08:21,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 365 transitions, 5657 flow [2025-01-10 01:08:21,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 365 transitions, 5560 flow, removed 41 selfloop flow, removed 2 redundant places. [2025-01-10 01:08:21,667 INFO L231 Difference]: Finished difference. Result has 179 places, 257 transitions, 4657 flow [2025-01-10 01:08:21,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4657, PETRI_PLACES=179, PETRI_TRANSITIONS=257} [2025-01-10 01:08:21,670 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 153 predicate places. [2025-01-10 01:08:21,670 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 257 transitions, 4657 flow [2025-01-10 01:08:21,670 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) [2025-01-10 01:08:21,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:21,670 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:21,676 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 [2025-01-10 01:08:21,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:21,871 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:21,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:21,872 INFO L85 PathProgramCache]: Analyzing trace with hash -531960814, now seen corresponding path program 6 times [2025-01-10 01:08:21,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:21,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124423062] [2025-01-10 01:08:21,873 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:08:21,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:21,879 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:21,882 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:21,884 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:08:21,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:21,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:21,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124423062] [2025-01-10 01:08:21,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124423062] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:21,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057473713] [2025-01-10 01:08:21,928 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:08:21,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:21,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:21,931 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) [2025-01-10 01:08:21,932 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 [2025-01-10 01:08:21,954 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:21,963 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:21,963 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:08:21,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:21,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:08:21,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:22,017 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:08:22,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057473713] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:08:22,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 01:08:22,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2025-01-10 01:08:22,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881373922] [2025-01-10 01:08:22,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:08:22,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:08:22,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:22,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:08:22,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:08:22,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:22,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 257 transitions, 4657 flow. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:08:22,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:22,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:22,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:22,634 INFO L124 PetriNetUnfolderBase]: 2345/3877 cut-off events. [2025-01-10 01:08:22,635 INFO L125 PetriNetUnfolderBase]: For 117564/117564 co-relation queries the response was YES. [2025-01-10 01:08:22,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30942 conditions, 3877 events. 2345/3877 cut-off events. For 117564/117564 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 21496 event pairs, 350 based on Foata normal form. 6/3883 useless extension candidates. Maximal degree in co-relation 29410. Up to 2202 conditions per place. [2025-01-10 01:08:22,663 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 207 selfloop transitions, 118 changer transitions 2/328 dead transitions. [2025-01-10 01:08:22,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 328 transitions, 6245 flow [2025-01-10 01:08:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:08:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:08:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2025-01-10 01:08:22,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-01-10 01:08:22,664 INFO L175 Difference]: Start difference. First operand has 179 places, 257 transitions, 4657 flow. Second operand 9 states and 108 transitions. [2025-01-10 01:08:22,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 328 transitions, 6245 flow [2025-01-10 01:08:22,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 328 transitions, 5928 flow, removed 116 selfloop flow, removed 6 redundant places. [2025-01-10 01:08:22,913 INFO L231 Difference]: Finished difference. Result has 183 places, 274 transitions, 5037 flow [2025-01-10 01:08:22,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4349, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5037, PETRI_PLACES=183, PETRI_TRANSITIONS=274} [2025-01-10 01:08:22,914 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 157 predicate places. [2025-01-10 01:08:22,914 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 274 transitions, 5037 flow [2025-01-10 01:08:22,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:08:22,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:22,914 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:22,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 01:08:23,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:23,115 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:23,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:23,116 INFO L85 PathProgramCache]: Analyzing trace with hash 405645782, now seen corresponding path program 7 times [2025-01-10 01:08:23,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:23,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779691520] [2025-01-10 01:08:23,116 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:08:23,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:23,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 01:08:23,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:23,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:08:23,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:23,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:23,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779691520] [2025-01-10 01:08:23,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779691520] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:23,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472686358] [2025-01-10 01:08:23,164 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:08:23,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:23,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:23,167 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) [2025-01-10 01:08:23,168 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 [2025-01-10 01:08:23,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 01:08:23,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:23,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:08:23,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:23,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:08:23,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:23,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:23,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472686358] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:23,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:23,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-01-10 01:08:23,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153259948] [2025-01-10 01:08:23,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:23,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 01:08:23,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:23,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 01:08:23,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:08:23,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:23,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 274 transitions, 5037 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:08:23,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:23,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:23,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:23,959 INFO L124 PetriNetUnfolderBase]: 2351/3899 cut-off events. [2025-01-10 01:08:23,959 INFO L125 PetriNetUnfolderBase]: For 114999/114999 co-relation queries the response was YES. [2025-01-10 01:08:24,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30995 conditions, 3899 events. 2351/3899 cut-off events. For 114999/114999 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 21701 event pairs, 285 based on Foata normal form. 8/3907 useless extension candidates. Maximal degree in co-relation 29496. Up to 907 conditions per place. [2025-01-10 01:08:24,032 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 203 selfloop transitions, 141 changer transitions 4/349 dead transitions. [2025-01-10 01:08:24,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 349 transitions, 6591 flow [2025-01-10 01:08:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 01:08:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-10 01:08:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2025-01-10 01:08:24,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2025-01-10 01:08:24,036 INFO L175 Difference]: Start difference. First operand has 183 places, 274 transitions, 5037 flow. Second operand 13 states and 154 transitions. [2025-01-10 01:08:24,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 349 transitions, 6591 flow [2025-01-10 01:08:24,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 349 transitions, 6477 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-01-10 01:08:24,319 INFO L231 Difference]: Finished difference. Result has 190 places, 272 transitions, 5226 flow [2025-01-10 01:08:24,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4911, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5226, PETRI_PLACES=190, PETRI_TRANSITIONS=272} [2025-01-10 01:08:24,320 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 164 predicate places. [2025-01-10 01:08:24,320 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 272 transitions, 5226 flow [2025-01-10 01:08:24,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:08:24,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:24,320 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:24,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 01:08:24,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-10 01:08:24,522 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:24,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:24,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2018058552, now seen corresponding path program 8 times [2025-01-10 01:08:24,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:24,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631745687] [2025-01-10 01:08:24,523 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:08:24,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:24,526 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:24,529 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:24,529 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:08:24,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:24,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631745687] [2025-01-10 01:08:24,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631745687] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626194484] [2025-01-10 01:08:24,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:08:24,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:24,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:24,576 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) [2025-01-10 01:08:24,577 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 [2025-01-10 01:08:24,601 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:24,609 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:24,609 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:08:24,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:24,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:08:24,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:24,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:24,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626194484] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:24,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:24,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2025-01-10 01:08:24,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417649216] [2025-01-10 01:08:24,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:24,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 01:08:24,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:24,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 01:08:24,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2025-01-10 01:08:24,701 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:24,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 272 transitions, 5226 flow. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 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) [2025-01-10 01:08:24,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:24,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:24,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:25,522 INFO L124 PetriNetUnfolderBase]: 2604/4302 cut-off events. [2025-01-10 01:08:25,523 INFO L125 PetriNetUnfolderBase]: For 146508/146508 co-relation queries the response was YES. [2025-01-10 01:08:25,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35753 conditions, 4302 events. 2604/4302 cut-off events. For 146508/146508 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 23928 event pairs, 161 based on Foata normal form. 54/4356 useless extension candidates. Maximal degree in co-relation 33402. Up to 910 conditions per place. [2025-01-10 01:08:25,554 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 159 selfloop transitions, 258 changer transitions 6/424 dead transitions. [2025-01-10 01:08:25,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 424 transitions, 8224 flow [2025-01-10 01:08:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-10 01:08:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-01-10 01:08:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 259 transitions. [2025-01-10 01:08:25,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43166666666666664 [2025-01-10 01:08:25,556 INFO L175 Difference]: Start difference. First operand has 190 places, 272 transitions, 5226 flow. Second operand 25 states and 259 transitions. [2025-01-10 01:08:25,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 424 transitions, 8224 flow [2025-01-10 01:08:25,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 424 transitions, 7947 flow, removed 22 selfloop flow, removed 9 redundant places. [2025-01-10 01:08:25,958 INFO L231 Difference]: Finished difference. Result has 210 places, 321 transitions, 7011 flow [2025-01-10 01:08:25,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4953, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7011, PETRI_PLACES=210, PETRI_TRANSITIONS=321} [2025-01-10 01:08:25,958 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 184 predicate places. [2025-01-10 01:08:25,958 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 321 transitions, 7011 flow [2025-01-10 01:08:25,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 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) [2025-01-10 01:08:25,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:25,959 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:25,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-10 01:08:26,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-10 01:08:26,159 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:26,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:26,160 INFO L85 PathProgramCache]: Analyzing trace with hash -932094258, now seen corresponding path program 9 times [2025-01-10 01:08:26,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:26,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015048248] [2025-01-10 01:08:26,160 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:08:26,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:26,165 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:26,169 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:26,169 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:08:26,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:26,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015048248] [2025-01-10 01:08:26,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015048248] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:26,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311237983] [2025-01-10 01:08:26,221 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:08:26,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:26,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:26,223 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) [2025-01-10 01:08:26,224 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 [2025-01-10 01:08:26,248 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:26,257 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:26,257 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:08:26,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:26,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:08:26,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:26,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:26,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311237983] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:26,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:26,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-01-10 01:08:26,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068877733] [2025-01-10 01:08:26,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:26,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 01:08:26,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:26,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 01:08:26,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-01-10 01:08:26,360 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:26,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 321 transitions, 7011 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 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) [2025-01-10 01:08:26,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:26,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:26,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:27,475 INFO L124 PetriNetUnfolderBase]: 2986/4978 cut-off events. [2025-01-10 01:08:27,475 INFO L125 PetriNetUnfolderBase]: For 197952/197952 co-relation queries the response was YES. [2025-01-10 01:08:27,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44501 conditions, 4978 events. 2986/4978 cut-off events. For 197952/197952 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 28971 event pairs, 137 based on Foata normal form. 30/5008 useless extension candidates. Maximal degree in co-relation 41146. Up to 966 conditions per place. [2025-01-10 01:08:27,531 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 215 selfloop transitions, 292 changer transitions 5/513 dead transitions. [2025-01-10 01:08:27,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 513 transitions, 11023 flow [2025-01-10 01:08:27,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-10 01:08:27,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-01-10 01:08:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 300 transitions. [2025-01-10 01:08:27,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2025-01-10 01:08:27,533 INFO L175 Difference]: Start difference. First operand has 210 places, 321 transitions, 7011 flow. Second operand 29 states and 300 transitions. [2025-01-10 01:08:27,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 513 transitions, 11023 flow [2025-01-10 01:08:28,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 513 transitions, 10480 flow, removed 102 selfloop flow, removed 16 redundant places. [2025-01-10 01:08:28,162 INFO L231 Difference]: Finished difference. Result has 227 places, 376 transitions, 8838 flow [2025-01-10 01:08:28,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6585, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8838, PETRI_PLACES=227, PETRI_TRANSITIONS=376} [2025-01-10 01:08:28,163 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 201 predicate places. [2025-01-10 01:08:28,163 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 376 transitions, 8838 flow [2025-01-10 01:08:28,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 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) [2025-01-10 01:08:28,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:28,163 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:28,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-10 01:08:28,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:28,364 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:28,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:28,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1783549720, now seen corresponding path program 10 times [2025-01-10 01:08:28,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:28,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706887523] [2025-01-10 01:08:28,364 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:08:28,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:28,370 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:28,375 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 21 of 22 statements. [2025-01-10 01:08:28,375 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:08:28,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:28,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:28,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706887523] [2025-01-10 01:08:28,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706887523] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:28,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834549465] [2025-01-10 01:08:28,420 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:08:28,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:28,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:28,422 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) [2025-01-10 01:08:28,424 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 [2025-01-10 01:08:28,446 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:28,452 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 21 of 22 statements. [2025-01-10 01:08:28,452 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:08:28,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:28,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:08:28,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:28,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:28,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834549465] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:28,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:28,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-10 01:08:28,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484969205] [2025-01-10 01:08:28,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:28,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 01:08:28,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:28,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 01:08:28,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:08:28,558 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:28,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 376 transitions, 8838 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2025-01-10 01:08:28,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:28,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:28,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:29,341 INFO L124 PetriNetUnfolderBase]: 3383/5612 cut-off events. [2025-01-10 01:08:29,341 INFO L125 PetriNetUnfolderBase]: For 255639/255639 co-relation queries the response was YES. [2025-01-10 01:08:29,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51212 conditions, 5612 events. 3383/5612 cut-off events. For 255639/255639 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 33308 event pairs, 1200 based on Foata normal form. 18/5630 useless extension candidates. Maximal degree in co-relation 48985. Up to 4308 conditions per place. [2025-01-10 01:08:29,388 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 415 selfloop transitions, 62 changer transitions 2/480 dead transitions. [2025-01-10 01:08:29,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 480 transitions, 11386 flow [2025-01-10 01:08:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 01:08:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-10 01:08:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2025-01-10 01:08:29,390 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2025-01-10 01:08:29,390 INFO L175 Difference]: Start difference. First operand has 227 places, 376 transitions, 8838 flow. Second operand 13 states and 147 transitions. [2025-01-10 01:08:29,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 480 transitions, 11386 flow [2025-01-10 01:08:30,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 480 transitions, 11116 flow, removed 44 selfloop flow, removed 14 redundant places. [2025-01-10 01:08:30,288 INFO L231 Difference]: Finished difference. Result has 232 places, 402 transitions, 9399 flow [2025-01-10 01:08:30,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8598, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9399, PETRI_PLACES=232, PETRI_TRANSITIONS=402} [2025-01-10 01:08:30,289 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 206 predicate places. [2025-01-10 01:08:30,289 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 402 transitions, 9399 flow [2025-01-10 01:08:30,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2025-01-10 01:08:30,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:30,291 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:30,297 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 [2025-01-10 01:08:30,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-10 01:08:30,492 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:30,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1600763880, now seen corresponding path program 11 times [2025-01-10 01:08:30,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:30,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072417305] [2025-01-10 01:08:30,493 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:08:30,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:30,496 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 3 equivalence classes. [2025-01-10 01:08:30,501 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:30,501 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-10 01:08:30,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:30,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:30,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072417305] [2025-01-10 01:08:30,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072417305] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:30,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370703299] [2025-01-10 01:08:30,551 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:08:30,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:30,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:30,552 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) [2025-01-10 01:08:30,563 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 [2025-01-10 01:08:30,588 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 3 equivalence classes. [2025-01-10 01:08:30,596 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:30,596 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-10 01:08:30,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:30,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:08:30,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:30,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:30,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370703299] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:30,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:30,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-10 01:08:30,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257757509] [2025-01-10 01:08:30,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:30,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 01:08:30,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:30,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 01:08:30,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:08:30,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:30,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 402 transitions, 9399 flow. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 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) [2025-01-10 01:08:30,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:30,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:30,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:31,839 INFO L124 PetriNetUnfolderBase]: 3735/6179 cut-off events. [2025-01-10 01:08:31,839 INFO L125 PetriNetUnfolderBase]: For 300872/300872 co-relation queries the response was YES. [2025-01-10 01:08:31,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57826 conditions, 6179 events. 3735/6179 cut-off events. For 300872/300872 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 36959 event pairs, 583 based on Foata normal form. 84/6263 useless extension candidates. Maximal degree in co-relation 55573. Up to 2665 conditions per place. [2025-01-10 01:08:31,893 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 327 selfloop transitions, 214 changer transitions 3/545 dead transitions. [2025-01-10 01:08:31,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 545 transitions, 12825 flow [2025-01-10 01:08:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-10 01:08:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-01-10 01:08:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 221 transitions. [2025-01-10 01:08:31,895 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46041666666666664 [2025-01-10 01:08:31,895 INFO L175 Difference]: Start difference. First operand has 232 places, 402 transitions, 9399 flow. Second operand 20 states and 221 transitions. [2025-01-10 01:08:31,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 545 transitions, 12825 flow [2025-01-10 01:08:32,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 545 transitions, 12641 flow, removed 66 selfloop flow, removed 4 redundant places. [2025-01-10 01:08:32,928 INFO L231 Difference]: Finished difference. Result has 258 places, 436 transitions, 11078 flow [2025-01-10 01:08:32,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9235, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11078, PETRI_PLACES=258, PETRI_TRANSITIONS=436} [2025-01-10 01:08:32,929 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 232 predicate places. [2025-01-10 01:08:32,929 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 436 transitions, 11078 flow [2025-01-10 01:08:32,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 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) [2025-01-10 01:08:32,929 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:32,929 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:32,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-10 01:08:33,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-10 01:08:33,130 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:33,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:33,130 INFO L85 PathProgramCache]: Analyzing trace with hash 596733702, now seen corresponding path program 12 times [2025-01-10 01:08:33,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:33,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934708723] [2025-01-10 01:08:33,130 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:08:33,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:33,133 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:33,139 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:33,139 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:08:33,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:33,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:33,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934708723] [2025-01-10 01:08:33,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934708723] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:33,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963584104] [2025-01-10 01:08:33,190 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:08:33,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:33,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:33,194 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:08:33,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 01:08:33,226 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-10 01:08:33,234 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:33,234 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:08:33,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:33,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:08:33,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:33,284 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:33,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963584104] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:33,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:33,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2025-01-10 01:08:33,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976529617] [2025-01-10 01:08:33,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:33,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 01:08:33,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:33,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 01:08:33,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-01-10 01:08:33,320 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:33,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 436 transitions, 11078 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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) [2025-01-10 01:08:33,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:33,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:33,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:34,812 INFO L124 PetriNetUnfolderBase]: 3917/6472 cut-off events. [2025-01-10 01:08:34,812 INFO L125 PetriNetUnfolderBase]: For 391835/391835 co-relation queries the response was YES. [2025-01-10 01:08:34,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65466 conditions, 6472 events. 3917/6472 cut-off events. For 391835/391835 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 38853 event pairs, 567 based on Foata normal form. 54/6526 useless extension candidates. Maximal degree in co-relation 64928. Up to 2482 conditions per place. [2025-01-10 01:08:34,889 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 305 selfloop transitions, 243 changer transitions 2/551 dead transitions. [2025-01-10 01:08:34,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 551 transitions, 14109 flow [2025-01-10 01:08:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-10 01:08:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-10 01:08:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 188 transitions. [2025-01-10 01:08:34,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2025-01-10 01:08:34,890 INFO L175 Difference]: Start difference. First operand has 258 places, 436 transitions, 11078 flow. Second operand 18 states and 188 transitions. [2025-01-10 01:08:34,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 551 transitions, 14109 flow [2025-01-10 01:08:36,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 551 transitions, 13655 flow, removed 175 selfloop flow, removed 6 redundant places. [2025-01-10 01:08:36,335 INFO L231 Difference]: Finished difference. Result has 276 places, 460 transitions, 12311 flow [2025-01-10 01:08:36,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10702, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12311, PETRI_PLACES=276, PETRI_TRANSITIONS=460} [2025-01-10 01:08:36,336 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 250 predicate places. [2025-01-10 01:08:36,336 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 460 transitions, 12311 flow [2025-01-10 01:08:36,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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) [2025-01-10 01:08:36,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:36,337 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:36,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 01:08:36,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:36,537 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:36,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:36,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1931290892, now seen corresponding path program 13 times [2025-01-10 01:08:36,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:36,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352469065] [2025-01-10 01:08:36,538 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:08:36,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:36,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 01:08:36,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:36,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:08:36,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:36,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:36,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352469065] [2025-01-10 01:08:36,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352469065] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:36,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597972585] [2025-01-10 01:08:36,590 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:08:36,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:36,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:36,593 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:08:36,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-10 01:08:36,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 01:08:36,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 01:08:36,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:08:36,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:36,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:08:36,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:36,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:36,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:08:36,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597972585] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:36,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:08:36,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 13 [2025-01-10 01:08:36,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929887060] [2025-01-10 01:08:36,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:08:36,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:08:36,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:36,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:08:36,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-01-10 01:08:36,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:36,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 460 transitions, 12311 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) [2025-01-10 01:08:36,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:36,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:36,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:37,969 INFO L124 PetriNetUnfolderBase]: 3914/6467 cut-off events. [2025-01-10 01:08:37,970 INFO L125 PetriNetUnfolderBase]: For 429854/429854 co-relation queries the response was YES. [2025-01-10 01:08:37,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68094 conditions, 6467 events. 3914/6467 cut-off events. For 429854/429854 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 38986 event pairs, 1476 based on Foata normal form. 8/6475 useless extension candidates. Maximal degree in co-relation 67444. Up to 5206 conditions per place. [2025-01-10 01:08:38,020 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 427 selfloop transitions, 67 changer transitions 1/496 dead transitions. [2025-01-10 01:08:38,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 496 transitions, 13780 flow [2025-01-10 01:08:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 01:08:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 01:08:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2025-01-10 01:08:38,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2025-01-10 01:08:38,021 INFO L175 Difference]: Start difference. First operand has 276 places, 460 transitions, 12311 flow. Second operand 8 states and 95 transitions. [2025-01-10 01:08:38,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 496 transitions, 13780 flow [2025-01-10 01:08:39,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 496 transitions, 13393 flow, removed 89 selfloop flow, removed 14 redundant places. [2025-01-10 01:08:39,254 INFO L231 Difference]: Finished difference. Result has 268 places, 458 transitions, 12066 flow [2025-01-10 01:08:39,255 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11904, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12066, PETRI_PLACES=268, PETRI_TRANSITIONS=458} [2025-01-10 01:08:39,255 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 242 predicate places. [2025-01-10 01:08:39,256 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 458 transitions, 12066 flow [2025-01-10 01:08:39,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) [2025-01-10 01:08:39,256 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:39,256 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:39,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-10 01:08:39,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:39,460 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:39,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:39,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1149429115, now seen corresponding path program 14 times [2025-01-10 01:08:39,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:39,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131446167] [2025-01-10 01:08:39,460 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:08:39,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:39,463 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-01-10 01:08:39,474 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-01-10 01:08:39,474 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:08:39,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:39,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:39,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131446167] [2025-01-10 01:08:39,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131446167] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:39,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521248925] [2025-01-10 01:08:39,582 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:08:39,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:39,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:39,587 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:08:39,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-10 01:08:39,613 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-01-10 01:08:39,622 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-01-10 01:08:39,623 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:08:39,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:39,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 01:08:39,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:39,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:39,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521248925] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:39,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:39,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 6 [2025-01-10 01:08:39,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765222972] [2025-01-10 01:08:39,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:39,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:08:39,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:39,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:08:39,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-01-10 01:08:39,687 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-10 01:08:39,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 458 transitions, 12066 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2025-01-10 01:08:39,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:39,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-10 01:08:39,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:41,568 INFO L124 PetriNetUnfolderBase]: 6514/11069 cut-off events. [2025-01-10 01:08:41,568 INFO L125 PetriNetUnfolderBase]: For 667279/667722 co-relation queries the response was YES. [2025-01-10 01:08:41,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113692 conditions, 11069 events. 6514/11069 cut-off events. For 667279/667722 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 77767 event pairs, 525 based on Foata normal form. 156/11134 useless extension candidates. Maximal degree in co-relation 111875. Up to 3072 conditions per place. [2025-01-10 01:08:41,710 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 1155 selfloop transitions, 43 changer transitions 189/1436 dead transitions. [2025-01-10 01:08:41,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 1436 transitions, 42377 flow [2025-01-10 01:08:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:08:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:08:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2025-01-10 01:08:41,714 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2025-01-10 01:08:41,714 INFO L175 Difference]: Start difference. First operand has 268 places, 458 transitions, 12066 flow. Second operand 6 states and 98 transitions. [2025-01-10 01:08:41,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 1436 transitions, 42377 flow [2025-01-10 01:08:45,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 1436 transitions, 41955 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-01-10 01:08:45,496 INFO L231 Difference]: Finished difference. Result has 268 places, 487 transitions, 12996 flow [2025-01-10 01:08:45,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11932, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12996, PETRI_PLACES=268, PETRI_TRANSITIONS=487} [2025-01-10 01:08:45,497 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 242 predicate places. [2025-01-10 01:08:45,497 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 487 transitions, 12996 flow [2025-01-10 01:08:45,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2025-01-10 01:08:45,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:45,498 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:45,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-10 01:08:45,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:45,702 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:45,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:45,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1078093270, now seen corresponding path program 15 times [2025-01-10 01:08:45,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:45,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049385354] [2025-01-10 01:08:45,703 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:08:45,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:45,706 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 3 equivalence classes. [2025-01-10 01:08:45,711 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 01:08:45,711 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-10 01:08:45,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:45,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:45,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049385354] [2025-01-10 01:08:45,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049385354] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:45,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668172392] [2025-01-10 01:08:45,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:08:45,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:45,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:45,775 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:08:45,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-10 01:08:45,803 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 3 equivalence classes. [2025-01-10 01:08:45,813 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 01:08:45,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-10 01:08:45,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:45,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:08:45,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:45,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:45,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668172392] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:45,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:45,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-01-10 01:08:45,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863345408] [2025-01-10 01:08:45,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:45,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-10 01:08:45,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:45,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-10 01:08:45,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2025-01-10 01:08:45,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:45,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 487 transitions, 12996 flow. Second operand has 20 states, 20 states have (on average 7.15) internal successors, (143), 20 states have internal predecessors, (143), 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) [2025-01-10 01:08:45,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:45,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:45,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:08:49,380 INFO L124 PetriNetUnfolderBase]: 10167/16610 cut-off events. [2025-01-10 01:08:49,381 INFO L125 PetriNetUnfolderBase]: For 1160362/1160362 co-relation queries the response was YES. [2025-01-10 01:08:49,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182917 conditions, 16610 events. 10167/16610 cut-off events. For 1160362/1160362 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 113833 event pairs, 320 based on Foata normal form. 217/16827 useless extension candidates. Maximal degree in co-relation 181130. Up to 3289 conditions per place. [2025-01-10 01:08:49,567 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 455 selfloop transitions, 592 changer transitions 30/1078 dead transitions. [2025-01-10 01:08:49,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1078 transitions, 28214 flow [2025-01-10 01:08:49,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-01-10 01:08:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-01-10 01:08:49,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 460 transitions. [2025-01-10 01:08:49,569 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2025-01-10 01:08:49,569 INFO L175 Difference]: Start difference. First operand has 268 places, 487 transitions, 12996 flow. Second operand 44 states and 460 transitions. [2025-01-10 01:08:49,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1078 transitions, 28214 flow [2025-01-10 01:08:56,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 1078 transitions, 27916 flow, removed 149 selfloop flow, removed 0 redundant places. [2025-01-10 01:08:56,933 INFO L231 Difference]: Finished difference. Result has 331 places, 722 transitions, 22109 flow [2025-01-10 01:08:56,934 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12944, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=22109, PETRI_PLACES=331, PETRI_TRANSITIONS=722} [2025-01-10 01:08:56,934 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 305 predicate places. [2025-01-10 01:08:56,935 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 722 transitions, 22109 flow [2025-01-10 01:08:56,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.15) internal successors, (143), 20 states have internal predecessors, (143), 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) [2025-01-10 01:08:56,935 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:08:56,935 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:08:56,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-10 01:08:57,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:57,136 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:08:57,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:08:57,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1975030488, now seen corresponding path program 16 times [2025-01-10 01:08:57,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:08:57,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682403374] [2025-01-10 01:08:57,137 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:08:57,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:08:57,141 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-01-10 01:08:57,147 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 27 of 28 statements. [2025-01-10 01:08:57,148 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:08:57,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:57,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:08:57,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682403374] [2025-01-10 01:08:57,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682403374] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:08:57,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532949640] [2025-01-10 01:08:57,212 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:08:57,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:08:57,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:08:57,219 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:08:57,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-10 01:08:57,247 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-01-10 01:08:57,257 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 27 of 28 statements. [2025-01-10 01:08:57,257 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:08:57,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:08:57,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:08:57,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:08:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:57,307 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:08:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:08:57,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532949640] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:08:57,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:08:57,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-01-10 01:08:57,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751794278] [2025-01-10 01:08:57,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:08:57,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 01:08:57,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:08:57,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 01:08:57,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:08:57,352 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:08:57,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 722 transitions, 22109 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:08:57,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:08:57,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:08:57,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:09:02,535 INFO L124 PetriNetUnfolderBase]: 12112/19788 cut-off events. [2025-01-10 01:09:02,535 INFO L125 PetriNetUnfolderBase]: For 1791518/1791518 co-relation queries the response was YES. [2025-01-10 01:09:02,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238710 conditions, 19788 events. 12112/19788 cut-off events. For 1791518/1791518 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 138933 event pairs, 515 based on Foata normal form. 84/19872 useless extension candidates. Maximal degree in co-relation 236585. Up to 6610 conditions per place. [2025-01-10 01:09:02,748 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 404 selfloop transitions, 841 changer transitions 73/1319 dead transitions. [2025-01-10 01:09:02,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1319 transitions, 40774 flow [2025-01-10 01:09:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-10 01:09:02,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-01-10 01:09:02,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 202 transitions. [2025-01-10 01:09:02,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2025-01-10 01:09:02,753 INFO L175 Difference]: Start difference. First operand has 331 places, 722 transitions, 22109 flow. Second operand 19 states and 202 transitions. [2025-01-10 01:09:02,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1319 transitions, 40774 flow [2025-01-10 01:09:15,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 1319 transitions, 38767 flow, removed 628 selfloop flow, removed 15 redundant places. [2025-01-10 01:09:15,299 INFO L231 Difference]: Finished difference. Result has 343 places, 1056 transitions, 34576 flow [2025-01-10 01:09:15,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=21184, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=511, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=34576, PETRI_PLACES=343, PETRI_TRANSITIONS=1056} [2025-01-10 01:09:15,301 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 317 predicate places. [2025-01-10 01:09:15,301 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 1056 transitions, 34576 flow [2025-01-10 01:09:15,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:09:15,302 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:09:15,302 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:09:15,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-10 01:09:15,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:09:15,504 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:09:15,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:09:15,505 INFO L85 PathProgramCache]: Analyzing trace with hash 834284878, now seen corresponding path program 17 times [2025-01-10 01:09:15,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:09:15,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393493632] [2025-01-10 01:09:15,505 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:09:15,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:09:15,510 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-01-10 01:09:15,513 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 01:09:15,513 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-10 01:09:15,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:09:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:09:15,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:09:15,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393493632] [2025-01-10 01:09:15,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393493632] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:09:15,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162678834] [2025-01-10 01:09:15,569 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:09:15,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:09:15,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:09:15,572 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:09:15,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-10 01:09:15,601 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-01-10 01:09:15,612 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 01:09:15,612 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-10 01:09:15,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:09:15,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:09:15,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:09:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:09:15,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:09:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:09:15,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162678834] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:09:15,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:09:15,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-01-10 01:09:15,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365436261] [2025-01-10 01:09:15,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:09:15,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-10 01:09:15,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:09:15,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-10 01:09:15,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-01-10 01:09:15,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:09:15,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 1056 transitions, 34576 flow. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 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) [2025-01-10 01:09:15,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:09:15,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:09:15,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:09:23,607 INFO L124 PetriNetUnfolderBase]: 14932/24191 cut-off events. [2025-01-10 01:09:23,608 INFO L125 PetriNetUnfolderBase]: For 2362684/2362684 co-relation queries the response was YES. [2025-01-10 01:09:23,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299233 conditions, 24191 events. 14932/24191 cut-off events. For 2362684/2362684 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 173067 event pairs, 1332 based on Foata normal form. 62/24253 useless extension candidates. Maximal degree in co-relation 297055. Up to 5194 conditions per place. [2025-01-10 01:09:23,898 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 747 selfloop transitions, 747 changer transitions 8/1503 dead transitions. [2025-01-10 01:09:23,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1503 transitions, 49038 flow [2025-01-10 01:09:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-10 01:09:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-01-10 01:09:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 226 transitions. [2025-01-10 01:09:23,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2025-01-10 01:09:23,899 INFO L175 Difference]: Start difference. First operand has 343 places, 1056 transitions, 34576 flow. Second operand 20 states and 226 transitions. [2025-01-10 01:09:23,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1503 transitions, 49038 flow [2025-01-10 01:09:44,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1503 transitions, 48585 flow, removed 213 selfloop flow, removed 4 redundant places. [2025-01-10 01:09:44,398 INFO L231 Difference]: Finished difference. Result has 364 places, 1226 transitions, 41581 flow [2025-01-10 01:09:44,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=34321, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=583, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=41581, PETRI_PLACES=364, PETRI_TRANSITIONS=1226} [2025-01-10 01:09:44,401 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 338 predicate places. [2025-01-10 01:09:44,401 INFO L471 AbstractCegarLoop]: Abstraction has has 364 places, 1226 transitions, 41581 flow [2025-01-10 01:09:44,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 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) [2025-01-10 01:09:44,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:09:44,401 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:09:44,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-01-10 01:09:44,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:09:44,602 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:09:44,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:09:44,603 INFO L85 PathProgramCache]: Analyzing trace with hash -872857494, now seen corresponding path program 18 times [2025-01-10 01:09:44,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:09:44,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691878575] [2025-01-10 01:09:44,603 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:09:44,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:09:44,607 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 3 equivalence classes. [2025-01-10 01:09:44,609 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 01:09:44,609 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-10 01:09:44,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:09:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:09:44,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:09:44,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691878575] [2025-01-10 01:09:44,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691878575] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:09:44,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283998769] [2025-01-10 01:09:44,663 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:09:44,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:09:44,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:09:44,668 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:09:44,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-10 01:09:44,698 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 3 equivalence classes. [2025-01-10 01:09:44,708 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 01:09:44,709 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-10 01:09:44,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:09:44,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:09:44,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:09:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:09:44,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:09:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:09:44,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283998769] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:09:44,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:09:44,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-01-10 01:09:44,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244282299] [2025-01-10 01:09:44,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:09:44,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 01:09:44,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:09:44,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 01:09:44,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2025-01-10 01:09:44,829 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-01-10 01:09:44,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 1226 transitions, 41581 flow. Second operand has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 states have internal predecessors, (119), 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) [2025-01-10 01:09:44,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:09:44,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-01-10 01:09:44,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand