./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-5.i --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/pthread/fib_unsafe-5.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:35:53,933 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:35:53,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:35:54,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:35:54,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:35:54,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:35:54,020 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:35:54,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:35:54,020 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:35:54,020 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:35:54,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:35:54,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:35:54,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:35:54,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:35:54,021 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:35:54,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:35:54,022 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:35:54,022 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:35:54,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:35:54,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:35:54,022 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:35:54,023 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:35:54,023 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:35:54,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:35:54,023 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:35:54,023 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:35:54,023 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:35:54,023 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:35:54,023 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:35:54,023 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:35:54,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:35:54,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:35:54,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:35:54,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:35:54,023 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:35:54,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:35:54,024 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:35:54,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:35:54,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:35:54,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:35:54,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:35:54,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:35:54,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:35:54,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:35:54,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:35:54,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:35:54,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:35:54,024 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 -> e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 [2025-01-10 00:35:54,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:35:54,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:35:54,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:35:54,251 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:35:54,251 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:35:54,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-5.i [2025-01-10 00:35:55,430 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/03191243a/273a6fe28f15448484c346261b4404b2/FLAGbcef7c90d [2025-01-10 00:35:55,724 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:35:55,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-5.i [2025-01-10 00:35:55,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/03191243a/273a6fe28f15448484c346261b4404b2/FLAGbcef7c90d [2025-01-10 00:35:55,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/03191243a/273a6fe28f15448484c346261b4404b2 [2025-01-10 00:35:55,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:35:55,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:35:55,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:35:55,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:35:55,752 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:35:55,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:35:55" (1/1) ... [2025-01-10 00:35:55,753 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c4668b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:55, skipping insertion in model container [2025-01-10 00:35:55,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:35:55" (1/1) ... [2025-01-10 00:35:55,777 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:35:55,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:35:55,963 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:35:55,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:35:56,020 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:35:56,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56 WrapperNode [2025-01-10 00:35:56,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:35:56,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:35:56,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:35:56,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:35:56,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,046 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2025-01-10 00:35:56,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:35:56,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:35:56,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:35:56,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:35:56,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,061 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 00:35:56,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,071 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:35:56,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:35:56,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:35:56,084 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:35:56,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (1/1) ... [2025-01-10 00:35:56,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:35:56,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:56,108 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 00:35:56,110 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 00:35:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-01-10 00:35:56,126 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-01-10 00:35:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-01-10 00:35:56,126 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-01-10 00:35:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 00:35:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:35:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 00:35:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 00:35:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:35:56,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:35:56,127 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 00:35:56,206 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:35:56,207 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:35:56,322 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:35:56,322 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:35:56,388 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:35:56,388 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 00:35:56,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:56 BoogieIcfgContainer [2025-01-10 00:35:56,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:35:56,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:35:56,391 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:35:56,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:35:56,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:35:55" (1/3) ... [2025-01-10 00:35:56,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f86a77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:35:56, skipping insertion in model container [2025-01-10 00:35:56,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:56" (2/3) ... [2025-01-10 00:35:56,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f86a77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:35:56, skipping insertion in model container [2025-01-10 00:35:56,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:56" (3/3) ... [2025-01-10 00:35:56,399 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_unsafe-5.i [2025-01-10 00:35:56,412 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:35:56,413 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_unsafe-5.i that has 3 procedures, 30 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-01-10 00:35:56,413 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:35:56,453 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:35:56,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 76 flow [2025-01-10 00:35:56,509 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2025-01-10 00:35:56,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:35:56,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 5/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2025-01-10 00:35:56,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 76 flow [2025-01-10 00:35:56,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 70 flow [2025-01-10 00:35:56,523 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:35:56,531 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;@2df305d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:35:56,531 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-10 00:35:56,538 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:35:56,538 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2025-01-10 00:35:56,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:35:56,539 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:56,541 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:56,541 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:56,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:56,545 INFO L85 PathProgramCache]: Analyzing trace with hash 282289383, now seen corresponding path program 1 times [2025-01-10 00:35:56,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:56,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322611533] [2025-01-10 00:35:56,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:56,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:56,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 00:35:56,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 00:35:56,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:56,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:56,771 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 00:35:56,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:56,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322611533] [2025-01-10 00:35:56,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322611533] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:35:56,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:35:56,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:35:56,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5934134] [2025-01-10 00:35:56,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:35:56,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:35:56,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:56,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:35:56,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:35:56,803 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-01-10 00:35:56,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:35:56,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:56,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-01-10 00:35:56,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:56,936 INFO L124 PetriNetUnfolderBase]: 151/286 cut-off events. [2025-01-10 00:35:56,936 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 00:35:56,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 286 events. 151/286 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 932 event pairs, 20 based on Foata normal form. 18/290 useless extension candidates. Maximal degree in co-relation 515. Up to 172 conditions per place. [2025-01-10 00:35:56,940 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 22 selfloop transitions, 2 changer transitions 1/36 dead transitions. [2025-01-10 00:35:56,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 128 flow [2025-01-10 00:35:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:35:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:35:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2025-01-10 00:35:56,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2025-01-10 00:35:56,953 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 67 transitions. [2025-01-10 00:35:56,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 128 flow [2025-01-10 00:35:56,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:35:56,960 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 72 flow [2025-01-10 00:35:56,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2025-01-10 00:35:56,965 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2025-01-10 00:35:56,966 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 72 flow [2025-01-10 00:35:56,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:35:56,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:56,967 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:56,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 00:35:56,967 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:56,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:56,968 INFO L85 PathProgramCache]: Analyzing trace with hash 439810931, now seen corresponding path program 1 times [2025-01-10 00:35:56,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:56,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987601301] [2025-01-10 00:35:56,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:56,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:56,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:35:56,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:35:56,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:56,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:57,056 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 00:35:57,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:57,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987601301] [2025-01-10 00:35:57,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987601301] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:35:57,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394910961] [2025-01-10 00:35:57,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:57,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:57,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:57,059 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 00:35:57,060 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 00:35:57,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:35:57,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:35:57,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:57,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:57,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 00:35:57,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:35:57,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 00:35:57,159 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:35:57,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394910961] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:35:57,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 00:35:57,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-01-10 00:35:57,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568268967] [2025-01-10 00:35:57,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:35:57,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:35:57,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:57,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:35:57,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:35:57,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-01-10 00:35:57,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:35:57,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:57,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-01-10 00:35:57,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:57,213 INFO L124 PetriNetUnfolderBase]: 133/250 cut-off events. [2025-01-10 00:35:57,213 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 00:35:57,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 250 events. 133/250 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 756 event pairs, 80 based on Foata normal form. 9/242 useless extension candidates. Maximal degree in co-relation 488. Up to 204 conditions per place. [2025-01-10 00:35:57,215 INFO L140 encePairwiseOnDemand]: 32/34 looper letters, 16 selfloop transitions, 1 changer transitions 1/28 dead transitions. [2025-01-10 00:35:57,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 106 flow [2025-01-10 00:35:57,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:35:57,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:35:57,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2025-01-10 00:35:57,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2025-01-10 00:35:57,216 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 72 flow. Second operand 3 states and 54 transitions. [2025-01-10 00:35:57,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 106 flow [2025-01-10 00:35:57,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:35:57,217 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 68 flow [2025-01-10 00:35:57,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2025-01-10 00:35:57,218 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2025-01-10 00:35:57,218 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 68 flow [2025-01-10 00:35:57,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:35:57,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:57,218 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:57,225 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 00:35:57,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:57,419 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:57,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:57,419 INFO L85 PathProgramCache]: Analyzing trace with hash 439811976, now seen corresponding path program 1 times [2025-01-10 00:35:57,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:57,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783944914] [2025-01-10 00:35:57,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:57,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:57,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:35:57,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:35:57,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:57,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:57,501 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 00:35:57,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:57,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783944914] [2025-01-10 00:35:57,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783944914] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:35:57,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412188319] [2025-01-10 00:35:57,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:57,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:57,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:57,505 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 00:35:57,506 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 00:35:57,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:35:57,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:35:57,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:57,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:57,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:35:57,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:35:57,593 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 00:35:57,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:35:57,613 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 00:35:57,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412188319] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:35:57,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:35:57,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-10 00:35:57,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231335119] [2025-01-10 00:35:57,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:35:57,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:35:57,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:57,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:35:57,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:35:57,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-01-10 00:35:57,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:35:57,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:57,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-01-10 00:35:57,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:57,714 INFO L124 PetriNetUnfolderBase]: 169/304 cut-off events. [2025-01-10 00:35:57,715 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 00:35:57,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 304 events. 169/304 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 863 event pairs, 20 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 622. Up to 118 conditions per place. [2025-01-10 00:35:57,719 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2025-01-10 00:35:57,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 216 flow [2025-01-10 00:35:57,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:35:57,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 00:35:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2025-01-10 00:35:57,723 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2025-01-10 00:35:57,723 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 68 flow. Second operand 6 states and 125 transitions. [2025-01-10 00:35:57,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 216 flow [2025-01-10 00:35:57,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:35:57,726 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 103 flow [2025-01-10 00:35:57,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2025-01-10 00:35:57,727 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2025-01-10 00:35:57,727 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 103 flow [2025-01-10 00:35:57,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:35:57,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:57,727 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:57,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 00:35:57,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:57,928 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:57,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash 407546876, now seen corresponding path program 2 times [2025-01-10 00:35:57,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:57,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141070561] [2025-01-10 00:35:57,928 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:35:57,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:57,934 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 00:35:57,951 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 00:35:57,951 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:35:57,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:58,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141070561] [2025-01-10 00:35:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141070561] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:35:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167566086] [2025-01-10 00:35:58,056 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:35:58,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:58,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:58,058 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 00:35:58,060 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 00:35:58,099 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 00:35:58,116 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 00:35:58,116 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:35:58,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:58,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:35:58,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:35:58,134 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:58,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:35:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:58,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167566086] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:35:58,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:35:58,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-10 00:35:58,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852866417] [2025-01-10 00:35:58,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:35:58,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 00:35:58,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:58,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 00:35:58,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-10 00:35:58,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-01-10 00:35:58,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 103 flow. Second operand has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 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 00:35:58,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:58,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-01-10 00:35:58,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:58,350 INFO L124 PetriNetUnfolderBase]: 277/466 cut-off events. [2025-01-10 00:35:58,351 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2025-01-10 00:35:58,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 466 events. 277/466 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1265 event pairs, 20 based on Foata normal form. 54/515 useless extension candidates. Maximal degree in co-relation 1153. Up to 118 conditions per place. [2025-01-10 00:35:58,354 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 75 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2025-01-10 00:35:58,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 96 transitions, 431 flow [2025-01-10 00:35:58,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 00:35:58,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-10 00:35:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2025-01-10 00:35:58,356 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2025-01-10 00:35:58,356 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 103 flow. Second operand 12 states and 248 transitions. [2025-01-10 00:35:58,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 96 transitions, 431 flow [2025-01-10 00:35:58,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 96 transitions, 417 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-01-10 00:35:58,360 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 173 flow [2025-01-10 00:35:58,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2025-01-10 00:35:58,361 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2025-01-10 00:35:58,361 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 173 flow [2025-01-10 00:35:58,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 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 00:35:58,361 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:58,361 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:58,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 00:35:58,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:58,565 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:58,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:58,566 INFO L85 PathProgramCache]: Analyzing trace with hash -676216708, now seen corresponding path program 3 times [2025-01-10 00:35:58,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:58,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228415077] [2025-01-10 00:35:58,566 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 00:35:58,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:58,576 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 6 equivalence classes. [2025-01-10 00:35:58,608 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 00:35:58,608 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-10 00:35:58,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:58,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:58,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228415077] [2025-01-10 00:35:58,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228415077] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:35:58,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789633074] [2025-01-10 00:35:58,789 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 00:35:58,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:58,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:58,791 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 00:35:58,793 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 00:35:58,834 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 6 equivalence classes. [2025-01-10 00:35:58,854 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 00:35:58,854 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-10 00:35:58,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:58,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 00:35:58,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:35:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:58,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:35:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:35:58,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789633074] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:35:58,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:35:58,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2025-01-10 00:35:58,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779011715] [2025-01-10 00:35:58,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:35:58,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 00:35:58,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:58,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 00:35:58,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2025-01-10 00:35:58,998 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-01-10 00:35:58,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 173 flow. Second operand has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 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 00:35:58,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:58,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-01-10 00:35:58,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:59,156 INFO L124 PetriNetUnfolderBase]: 313/520 cut-off events. [2025-01-10 00:35:59,156 INFO L125 PetriNetUnfolderBase]: For 963/963 co-relation queries the response was YES. [2025-01-10 00:35:59,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 520 events. 313/520 cut-off events. For 963/963 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1397 event pairs, 20 based on Foata normal form. 18/533 useless extension candidates. Maximal degree in co-relation 1468. Up to 118 conditions per place. [2025-01-10 00:35:59,161 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 87 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2025-01-10 00:35:59,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 110 transitions, 533 flow [2025-01-10 00:35:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 00:35:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-01-10 00:35:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 284 transitions. [2025-01-10 00:35:59,164 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5966386554621849 [2025-01-10 00:35:59,164 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 173 flow. Second operand 14 states and 284 transitions. [2025-01-10 00:35:59,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 110 transitions, 533 flow [2025-01-10 00:35:59,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 110 transitions, 481 flow, removed 21 selfloop flow, removed 5 redundant places. [2025-01-10 00:35:59,172 INFO L231 Difference]: Finished difference. Result has 65 places, 38 transitions, 173 flow [2025-01-10 00:35:59,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=173, PETRI_PLACES=65, PETRI_TRANSITIONS=38} [2025-01-10 00:35:59,173 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2025-01-10 00:35:59,174 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 38 transitions, 173 flow [2025-01-10 00:35:59,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.6) internal successors, (219), 15 states have internal predecessors, (219), 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 00:35:59,174 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:59,174 INFO L206 CegarLoopForPetriNet]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:59,180 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 00:35:59,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:59,379 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:35:59,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:59,380 INFO L85 PathProgramCache]: Analyzing trace with hash -974343684, now seen corresponding path program 4 times [2025-01-10 00:35:59,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:59,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795851977] [2025-01-10 00:35:59,380 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 00:35:59,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:59,386 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-01-10 00:35:59,409 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 00:35:59,409 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 00:35:59,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:36:00,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:36:00,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795851977] [2025-01-10 00:36:00,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795851977] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:36:00,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978080031] [2025-01-10 00:36:00,082 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 00:36:00,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:36:00,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:36:00,084 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 00:36:00,086 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 00:36:00,120 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-01-10 00:36:00,138 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 00:36:00,138 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 00:36:00,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:00,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-01-10 00:36:00,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:36:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:36:00,832 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:36:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:36:01,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978080031] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:36:01,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:36:01,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 55 [2025-01-10 00:36:01,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609525393] [2025-01-10 00:36:01,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:36:01,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-01-10 00:36:01,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:36:01,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-01-10 00:36:01,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2678, Unknown=0, NotChecked=0, Total=3080 [2025-01-10 00:36:01,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-01-10 00:36:01,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 38 transitions, 173 flow. Second operand has 56 states, 56 states have (on average 8.285714285714286) internal successors, (464), 56 states have internal predecessors, (464), 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 00:36:01,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:36:01,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-01-10 00:36:01,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:36:12,122 INFO L124 PetriNetUnfolderBase]: 12265/20019 cut-off events. [2025-01-10 00:36:12,122 INFO L125 PetriNetUnfolderBase]: For 30072/30072 co-relation queries the response was YES. [2025-01-10 00:36:12,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51650 conditions, 20019 events. 12265/20019 cut-off events. For 30072/30072 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 126364 event pairs, 399 based on Foata normal form. 0/19733 useless extension candidates. Maximal degree in co-relation 51629. Up to 2550 conditions per place. [2025-01-10 00:36:12,211 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 403 selfloop transitions, 404 changer transitions 613/1424 dead transitions. [2025-01-10 00:36:12,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 1424 transitions, 8224 flow [2025-01-10 00:36:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2025-01-10 00:36:12,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2025-01-10 00:36:12,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 2044 transitions. [2025-01-10 00:36:12,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4554367201426025 [2025-01-10 00:36:12,218 INFO L175 Difference]: Start difference. First operand has 65 places, 38 transitions, 173 flow. Second operand 132 states and 2044 transitions. [2025-01-10 00:36:12,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 1424 transitions, 8224 flow [2025-01-10 00:36:12,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 1424 transitions, 7242 flow, removed 210 selfloop flow, removed 11 redundant places. [2025-01-10 00:36:12,292 INFO L231 Difference]: Finished difference. Result has 247 places, 485 transitions, 3003 flow [2025-01-10 00:36:12,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=132, PETRI_FLOW=3003, PETRI_PLACES=247, PETRI_TRANSITIONS=485} [2025-01-10 00:36:12,294 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 213 predicate places. [2025-01-10 00:36:12,294 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 485 transitions, 3003 flow [2025-01-10 00:36:12,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 8.285714285714286) internal successors, (464), 56 states have internal predecessors, (464), 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 00:36:12,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:36:12,295 INFO L206 CegarLoopForPetriNet]: trace histogram [12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:36:12,301 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 00:36:12,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:36:12,499 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:36:12,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:36:12,500 INFO L85 PathProgramCache]: Analyzing trace with hash -589875842, now seen corresponding path program 1 times [2025-01-10 00:36:12,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:36:12,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628506948] [2025-01-10 00:36:12,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:36:12,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:36:12,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 00:36:12,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 00:36:12,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:36:12,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:36:13,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:36:13,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628506948] [2025-01-10 00:36:13,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628506948] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:36:13,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392621027] [2025-01-10 00:36:13,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:36:13,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:36:13,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:36:13,200 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 00:36:13,201 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 00:36:13,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 00:36:13,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 00:36:13,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:36:13,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:13,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-01-10 00:36:13,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:36:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 55 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:36:13,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:36:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:36:14,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392621027] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:36:14,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:36:14,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 61 [2025-01-10 00:36:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808577786] [2025-01-10 00:36:14,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:36:14,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-01-10 00:36:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:36:14,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-01-10 00:36:14,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=3350, Unknown=0, NotChecked=0, Total=3782 [2025-01-10 00:36:14,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-01-10 00:36:14,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 485 transitions, 3003 flow. Second operand has 62 states, 62 states have (on average 8.35483870967742) internal successors, (518), 62 states have internal predecessors, (518), 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 00:36:14,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:36:14,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-01-10 00:36:14,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:37:14,014 INFO L124 PetriNetUnfolderBase]: 127273/213363 cut-off events. [2025-01-10 00:37:14,014 INFO L125 PetriNetUnfolderBase]: For 9475865/9475865 co-relation queries the response was YES. [2025-01-10 00:37:16,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111991 conditions, 213363 events. 127273/213363 cut-off events. For 9475865/9475865 co-relation queries the response was YES. Maximal size of possible extension queue 3600. Compared 1976208 event pairs, 8126 based on Foata normal form. 5061/218420 useless extension candidates. Maximal degree in co-relation 1111908. Up to 23814 conditions per place. [2025-01-10 00:37:17,114 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 1695 selfloop transitions, 4937 changer transitions 3148/9784 dead transitions. [2025-01-10 00:37:17,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 9784 transitions, 85270 flow [2025-01-10 00:37:17,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 391 states. [2025-01-10 00:37:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2025-01-10 00:37:17,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 5994 transitions. [2025-01-10 00:37:17,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4508800962840379 [2025-01-10 00:37:17,129 INFO L175 Difference]: Start difference. First operand has 247 places, 485 transitions, 3003 flow. Second operand 391 states and 5994 transitions. [2025-01-10 00:37:17,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 9784 transitions, 85270 flow