./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-6.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-6.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 854e371c98b43d805c328b457758892c4a501d7b326c2672c089850792494a4b --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:35:55,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:35:55,707 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:35:55,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:35:55,716 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:35:55,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:35:55,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:35:55,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:35:55,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:35:55,746 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:35:55,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:35:55,747 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:35:55,748 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:35:55,748 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:35:55,748 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:35:55,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:35:55,749 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:35:55,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:35:55,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:35:55,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:35:55,749 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:35:55,749 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:35:55,749 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:35:55,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:35:55,750 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:35:55,750 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:35:55,750 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:35:55,750 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:35:55,750 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:35:55,750 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:35:55,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:35:55,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:35:55,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:35:55,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:35:55,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:35:55,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:35:55,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:35:55,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:35:55,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:35:55,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:35:55,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:35:55,752 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:35:55,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:35:55,752 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:35:55,752 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:35:55,753 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:35:55,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:35:55,753 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 854e371c98b43d805c328b457758892c4a501d7b326c2672c089850792494a4b [2025-01-10 00:35:56,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:35:56,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:35:56,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:35:56,052 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:35:56,052 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:35:56,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-6.i [2025-01-10 00:35:57,369 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/714adb674/c1cf0c6244f24725b445d526cee63017/FLAGdd6962fe1 [2025-01-10 00:35:57,744 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:35:57,746 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-6.i [2025-01-10 00:35:57,763 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/714adb674/c1cf0c6244f24725b445d526cee63017/FLAGdd6962fe1 [2025-01-10 00:35:57,783 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/714adb674/c1cf0c6244f24725b445d526cee63017 [2025-01-10 00:35:57,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:35:57,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:35:57,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:35:57,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:35:57,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:35:57,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:35:57" (1/1) ... [2025-01-10 00:35:57,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@615463fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:57, skipping insertion in model container [2025-01-10 00:35:57,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:35:57" (1/1) ... [2025-01-10 00:35:57,832 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:35:58,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:35:58,182 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:35:58,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:35:58,271 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:35:58,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58 WrapperNode [2025-01-10 00:35:58,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:35:58,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:35:58,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:35:58,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:35:58,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,315 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2025-01-10 00:35:58,317 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:35:58,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:35:58,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:35:58,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:35:58,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,329 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,346 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 00:35:58,346 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,351 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:35:58,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:35:58,367 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:35:58,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:35:58,368 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (1/1) ... [2025-01-10 00:35:58,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:35:58,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:58,404 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 00:35:58,407 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 00:35:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-01-10 00:35:58,430 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-01-10 00:35:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-01-10 00:35:58,430 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-01-10 00:35:58,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 00:35:58,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:35:58,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 00:35:58,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 00:35:58,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:35:58,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:35:58,433 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 00:35:58,563 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:35:58,565 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:35:58,737 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:35:58,738 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:35:58,862 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:35:58,863 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 00:35:58,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:58 BoogieIcfgContainer [2025-01-10 00:35:58,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:35:58,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:35:58,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:35:58,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:35:58,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:35:57" (1/3) ... [2025-01-10 00:35:58,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741cffe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:35:58, skipping insertion in model container [2025-01-10 00:35:58,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:58" (2/3) ... [2025-01-10 00:35:58,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741cffe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:35:58, skipping insertion in model container [2025-01-10 00:35:58,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:58" (3/3) ... [2025-01-10 00:35:58,878 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_unsafe-6.i [2025-01-10 00:35:58,891 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:35:58,892 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_unsafe-6.i that has 3 procedures, 30 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-01-10 00:35:58,893 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:35:58,936 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:35:58,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 76 flow [2025-01-10 00:35:59,004 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2025-01-10 00:35:59,007 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:35:59,012 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 00:35:59,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 34 transitions, 76 flow [2025-01-10 00:35:59,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 70 flow [2025-01-10 00:35:59,027 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:35:59,037 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;@1a710759, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:35:59,039 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-10 00:35:59,055 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:35:59,058 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2025-01-10 00:35:59,058 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:35:59,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:59,059 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:59,059 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 00:35:59,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:59,065 INFO L85 PathProgramCache]: Analyzing trace with hash 282289383, now seen corresponding path program 1 times [2025-01-10 00:35:59,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:59,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645521085] [2025-01-10 00:35:59,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:59,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:59,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 00:35:59,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 00:35:59,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:59,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:59,296 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 00:35:59,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:59,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645521085] [2025-01-10 00:35:59,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645521085] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:35:59,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:35:59,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:35:59,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504993933] [2025-01-10 00:35:59,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:35:59,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:35:59,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:59,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:35:59,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:35:59,335 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-01-10 00:35:59,339 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 00:35:59,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:59,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-01-10 00:35:59,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:59,496 INFO L124 PetriNetUnfolderBase]: 151/286 cut-off events. [2025-01-10 00:35:59,497 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 00:35:59,498 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 00:35:59,501 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 22 selfloop transitions, 2 changer transitions 1/36 dead transitions. [2025-01-10 00:35:59,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 128 flow [2025-01-10 00:35:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:35:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:35:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2025-01-10 00:35:59,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2025-01-10 00:35:59,518 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 67 transitions. [2025-01-10 00:35:59,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 128 flow [2025-01-10 00:35:59,522 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 00:35:59,524 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 72 flow [2025-01-10 00:35:59,527 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 00:35:59,532 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2025-01-10 00:35:59,532 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 72 flow [2025-01-10 00:35:59,532 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 00:35:59,533 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:59,533 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:59,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 00:35:59,533 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 00:35:59,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:35:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash 439810931, now seen corresponding path program 1 times [2025-01-10 00:35:59,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:35:59,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36242448] [2025-01-10 00:35:59,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:59,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:35:59,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:35:59,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:35:59,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:59,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:59,677 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 00:35:59,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:35:59,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36242448] [2025-01-10 00:35:59,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36242448] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:35:59,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161401466] [2025-01-10 00:35:59,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:35:59,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:35:59,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:35:59,682 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 00:35:59,683 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 00:35:59,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:35:59,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:35:59,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:35:59,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:35:59,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 00:35:59,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:35:59,809 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 00:35:59,810 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:35:59,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161401466] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:35:59,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 00:35:59,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-01-10 00:35:59,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278132427] [2025-01-10 00:35:59,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:35:59,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:35:59,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:35:59,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:35:59,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:35:59,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-01-10 00:35:59,814 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 00:35:59,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:35:59,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-01-10 00:35:59,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:35:59,907 INFO L124 PetriNetUnfolderBase]: 133/250 cut-off events. [2025-01-10 00:35:59,908 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 00:35:59,912 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 00:35:59,914 INFO L140 encePairwiseOnDemand]: 32/34 looper letters, 16 selfloop transitions, 1 changer transitions 1/28 dead transitions. [2025-01-10 00:35:59,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 106 flow [2025-01-10 00:35:59,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:35:59,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:35:59,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2025-01-10 00:35:59,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2025-01-10 00:35:59,915 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 72 flow. Second operand 3 states and 54 transitions. [2025-01-10 00:35:59,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 106 flow [2025-01-10 00:35:59,916 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 00:35:59,918 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 68 flow [2025-01-10 00:35:59,918 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 00:35:59,919 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2025-01-10 00:35:59,920 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 68 flow [2025-01-10 00:35:59,920 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 00:35:59,921 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:35:59,921 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:35:59,930 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 00:36:00,122 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 00:36:00,122 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 00:36:00,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:36:00,123 INFO L85 PathProgramCache]: Analyzing trace with hash 439811976, now seen corresponding path program 1 times [2025-01-10 00:36:00,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:36:00,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592817622] [2025-01-10 00:36:00,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:36:00,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:36:00,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:36:00,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:36:00,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:36:00,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:00,195 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 00:36:00,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:36:00,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592817622] [2025-01-10 00:36:00,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592817622] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:36:00,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102498488] [2025-01-10 00:36:00,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:36:00,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:36:00,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:36:00,198 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 00:36:00,201 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 00:36:00,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 00:36:00,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 00:36:00,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:36:00,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:00,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:36:00,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:36:00,303 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 00:36:00,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:36:00,327 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 00:36:00,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102498488] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:36:00,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:36:00,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-10 00:36:00,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355890157] [2025-01-10 00:36:00,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:36:00,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:36:00,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:36:00,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:36:00,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:36:00,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-01-10 00:36:00,333 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 00:36:00,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:36:00,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-01-10 00:36:00,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:36:00,472 INFO L124 PetriNetUnfolderBase]: 169/304 cut-off events. [2025-01-10 00:36:00,473 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 00:36:00,476 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 00:36:00,478 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 39 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2025-01-10 00:36:00,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 216 flow [2025-01-10 00:36:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:36:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 00:36:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2025-01-10 00:36:00,483 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2025-01-10 00:36:00,483 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 68 flow. Second operand 6 states and 125 transitions. [2025-01-10 00:36:00,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 216 flow [2025-01-10 00:36:00,484 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 00:36:00,486 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 103 flow [2025-01-10 00:36:00,488 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 00:36:00,489 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2025-01-10 00:36:00,489 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 103 flow [2025-01-10 00:36:00,489 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 00:36:00,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:36:00,490 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:36:00,497 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 00:36:00,694 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 00:36:00,694 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 00:36:00,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:36:00,695 INFO L85 PathProgramCache]: Analyzing trace with hash 407546876, now seen corresponding path program 2 times [2025-01-10 00:36:00,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:36:00,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762911717] [2025-01-10 00:36:00,695 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:36:00,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:36:00,707 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 00:36:00,722 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 00:36:00,722 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:36:00,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:00,836 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 00:36:00,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:36:00,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762911717] [2025-01-10 00:36:00,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762911717] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:36:00,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669690182] [2025-01-10 00:36:00,837 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:36:00,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:36:00,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:36:00,840 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 00:36:00,842 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 00:36:00,885 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 00:36:00,903 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 00:36:00,903 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:36:00,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:00,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:36:00,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:36:00,923 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 00:36:00,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:36:00,995 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 00:36:00,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669690182] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:36:00,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:36:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-10 00:36:00,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839524501] [2025-01-10 00:36:00,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:36:00,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-10 00:36:00,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:36:00,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-10 00:36:00,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-10 00:36:01,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-01-10 00:36:01,001 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 00:36:01,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:36:01,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-01-10 00:36:01,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:36:01,199 INFO L124 PetriNetUnfolderBase]: 277/466 cut-off events. [2025-01-10 00:36:01,199 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2025-01-10 00:36:01,200 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 00:36:01,203 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 75 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2025-01-10 00:36:01,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 96 transitions, 431 flow [2025-01-10 00:36:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-10 00:36:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-10 00:36:01,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2025-01-10 00:36:01,205 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2025-01-10 00:36:01,205 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 103 flow. Second operand 12 states and 248 transitions. [2025-01-10 00:36:01,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 96 transitions, 431 flow [2025-01-10 00:36:01,209 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 00:36:01,213 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 173 flow [2025-01-10 00:36:01,213 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 00:36:01,215 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2025-01-10 00:36:01,215 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 173 flow [2025-01-10 00:36:01,216 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 00:36:01,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:36:01,216 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:36:01,225 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 00:36:01,416 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 00:36:01,417 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 00:36:01,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:36:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash -676216708, now seen corresponding path program 3 times [2025-01-10 00:36:01,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:36:01,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640803227] [2025-01-10 00:36:01,417 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 00:36:01,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:36:01,431 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 6 equivalence classes. [2025-01-10 00:36:01,477 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 00:36:01,477 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-10 00:36:01,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:01,727 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 00:36:01,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:36:01,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640803227] [2025-01-10 00:36:01,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640803227] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:36:01,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885657907] [2025-01-10 00:36:01,729 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 00:36:01,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:36:01,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:36:01,732 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 00:36:01,734 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 00:36:01,785 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 6 equivalence classes. [2025-01-10 00:36:01,811 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 00:36:01,812 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-10 00:36:01,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:01,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 00:36:01,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:36:01,861 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 00:36:01,862 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:36:02,014 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 00:36:02,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885657907] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:36:02,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:36:02,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 17 [2025-01-10 00:36:02,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058102519] [2025-01-10 00:36:02,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:36:02,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 00:36:02,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:36:02,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 00:36:02,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-01-10 00:36:02,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-01-10 00:36:02,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 173 flow. Second operand has 17 states, 17 states have (on average 14.529411764705882) internal successors, (247), 17 states have internal predecessors, (247), 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 00:36:02,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:36:02,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-01-10 00:36:02,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:36:02,233 INFO L124 PetriNetUnfolderBase]: 349/574 cut-off events. [2025-01-10 00:36:02,233 INFO L125 PetriNetUnfolderBase]: For 1611/1611 co-relation queries the response was YES. [2025-01-10 00:36:02,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1649 conditions, 574 events. 349/574 cut-off events. For 1611/1611 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1527 event pairs, 20 based on Foata normal form. 36/605 useless extension candidates. Maximal degree in co-relation 1630. Up to 118 conditions per place. [2025-01-10 00:36:02,238 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 99 selfloop transitions, 15 changer transitions 0/124 dead transitions. [2025-01-10 00:36:02,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 124 transitions, 601 flow [2025-01-10 00:36:02,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 00:36:02,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-10 00:36:02,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 326 transitions. [2025-01-10 00:36:02,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5992647058823529 [2025-01-10 00:36:02,242 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 173 flow. Second operand 16 states and 326 transitions. [2025-01-10 00:36:02,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 124 transitions, 601 flow [2025-01-10 00:36:02,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 124 transitions, 545 flow, removed 23 selfloop flow, removed 5 redundant places. [2025-01-10 00:36:02,254 INFO L231 Difference]: Finished difference. Result has 69 places, 40 transitions, 197 flow [2025-01-10 00:36:02,254 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=16, PETRI_FLOW=197, PETRI_PLACES=69, PETRI_TRANSITIONS=40} [2025-01-10 00:36:02,255 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 35 predicate places. [2025-01-10 00:36:02,255 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 40 transitions, 197 flow [2025-01-10 00:36:02,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.529411764705882) internal successors, (247), 17 states have internal predecessors, (247), 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 00:36:02,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:36:02,255 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:36:02,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 00:36:02,456 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 00:36:02,456 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 00:36:02,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:36:02,457 INFO L85 PathProgramCache]: Analyzing trace with hash 288441212, now seen corresponding path program 4 times [2025-01-10 00:36:02,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:36:02,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335452853] [2025-01-10 00:36:02,457 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 00:36:02,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:36:02,467 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-01-10 00:36:02,498 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 00:36:02,498 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 00:36:02,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:36:03,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:36:03,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335452853] [2025-01-10 00:36:03,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335452853] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:36:03,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513001276] [2025-01-10 00:36:03,540 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 00:36:03,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:36:03,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:36:03,543 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 00:36:03,545 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 00:36:03,589 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-01-10 00:36:03,616 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 00:36:03,617 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 00:36:03,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:03,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-01-10 00:36:03,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:36:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:36:04,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:36:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:36:05,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513001276] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:36:05,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:36:05,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 61 [2025-01-10 00:36:05,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479955052] [2025-01-10 00:36:05,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:36:05,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-01-10 00:36:05,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:36:05,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-01-10 00:36:05,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=3279, Unknown=0, NotChecked=0, Total=3782 [2025-01-10 00:36:06,029 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-01-10 00:36:06,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 40 transitions, 197 flow. Second operand has 62 states, 62 states have (on average 8.258064516129032) internal successors, (512), 62 states have internal predecessors, (512), 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 00:36:06,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:36:06,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-01-10 00:36:06,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:36:21,921 INFO L124 PetriNetUnfolderBase]: 15442/25170 cut-off events. [2025-01-10 00:36:21,921 INFO L125 PetriNetUnfolderBase]: For 47568/47568 co-relation queries the response was YES. [2025-01-10 00:36:21,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66952 conditions, 25170 events. 15442/25170 cut-off events. For 47568/47568 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 161426 event pairs, 439 based on Foata normal form. 0/24842 useless extension candidates. Maximal degree in co-relation 66929. Up to 3219 conditions per place. [2025-01-10 00:36:22,088 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 461 selfloop transitions, 526 changer transitions 701/1692 dead transitions. [2025-01-10 00:36:22,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 1692 transitions, 10326 flow [2025-01-10 00:36:22,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2025-01-10 00:36:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2025-01-10 00:36:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 2328 transitions. [2025-01-10 00:36:22,100 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45647058823529413 [2025-01-10 00:36:22,101 INFO L175 Difference]: Start difference. First operand has 69 places, 40 transitions, 197 flow. Second operand 150 states and 2328 transitions. [2025-01-10 00:36:22,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 1692 transitions, 10326 flow [2025-01-10 00:36:22,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 1692 transitions, 8800 flow, removed 442 selfloop flow, removed 11 redundant places. [2025-01-10 00:36:22,270 INFO L231 Difference]: Finished difference. Result has 277 places, 617 transitions, 3823 flow [2025-01-10 00:36:22,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=150, PETRI_FLOW=3823, PETRI_PLACES=277, PETRI_TRANSITIONS=617} [2025-01-10 00:36:22,273 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 243 predicate places. [2025-01-10 00:36:22,273 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 617 transitions, 3823 flow [2025-01-10 00:36:22,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 8.258064516129032) internal successors, (512), 62 states have internal predecessors, (512), 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 00:36:22,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:36:22,275 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:36:22,283 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 00:36:22,475 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 00:36:22,476 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 00:36:22,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:36:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1722046206, now seen corresponding path program 1 times [2025-01-10 00:36:22,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:36:22,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080387705] [2025-01-10 00:36:22,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:36:22,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:36:22,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 00:36:22,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 00:36:22,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:36:22,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:36:23,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:36:23,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080387705] [2025-01-10 00:36:23,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080387705] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:36:23,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97605143] [2025-01-10 00:36:23,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:36:23,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:36:23,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:36:23,552 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 00:36:23,553 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 00:36:23,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 00:36:23,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 00:36:23,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:36:23,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:36:23,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-01-10 00:36:23,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:36:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:36:24,455 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:36:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:36:25,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97605143] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:36:25,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:36:25,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 67 [2025-01-10 00:36:25,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565737395] [2025-01-10 00:36:25,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:36:25,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2025-01-10 00:36:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:36:25,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2025-01-10 00:36:25,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=4021, Unknown=0, NotChecked=0, Total=4556 [2025-01-10 00:36:25,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2025-01-10 00:36:25,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 617 transitions, 3823 flow. Second operand has 68 states, 68 states have (on average 8.323529411764707) internal successors, (566), 68 states have internal predecessors, (566), 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 00:36:25,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:36:25,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2025-01-10 00:36:25,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand