./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:06:31,640 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:06:31,685 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 13:06:31,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:06:31,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:06:31,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:06:31,719 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:06:31,719 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:06:31,719 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:06:31,719 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:06:31,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:06:31,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:06:31,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:06:31,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:06:31,720 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:06:31,720 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:06:31,720 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:06:31,720 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:06:31,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:06:31,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:06:31,720 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:06:31,720 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:06:31,720 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:06:31,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:06:31,720 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:06:31,721 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:06:31,721 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:06:31,721 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:06:31,721 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:06:31,721 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:06:31,721 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:06:31,721 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:06:31,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:06:31,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:06:31,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:06:31,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:06:31,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:06:31,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:06:31,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:06:31,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:06:31,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:06:31,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:06:31,722 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 -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2025-02-06 13:06:31,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:06:31,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:06:31,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:06:31,911 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:06:31,911 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:06:31,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2025-02-06 13:06:33,003 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a1b168119/1f28362303254eda87a75376903d7778/FLAGc3e291187 [2025-02-06 13:06:33,204 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:06:33,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2025-02-06 13:06:33,224 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a1b168119/1f28362303254eda87a75376903d7778/FLAGc3e291187 [2025-02-06 13:06:33,247 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a1b168119/1f28362303254eda87a75376903d7778 [2025-02-06 13:06:33,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:06:33,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:06:33,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:06:33,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:06:33,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:06:33,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3f5dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33, skipping insertion in model container [2025-02-06 13:06:33,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,275 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:06:33,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:06:33,403 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:06:33,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:06:33,430 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:06:33,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33 WrapperNode [2025-02-06 13:06:33,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:06:33,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:06:33,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:06:33,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:06:33,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,462 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2025-02-06 13:06:33,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:06:33,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:06:33,464 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:06:33,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:06:33,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,471 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,482 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 13:06:33,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,487 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,491 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:06:33,493 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:06:33,493 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:06:33,493 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:06:33,494 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (1/1) ... [2025-02-06 13:06:33,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:06:33,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:06:33,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 13:06:33,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 13:06:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:06:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 13:06:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 13:06:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 13:06:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 13:06:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 13:06:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 13:06:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 13:06:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 13:06:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:06:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:06:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:06:33,553 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 13:06:33,630 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:06:33,632 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:06:33,796 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:06:33,796 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:06:33,868 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:06:33,868 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:06:33,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:06:33 BoogieIcfgContainer [2025-02-06 13:06:33,869 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:06:33,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:06:33,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:06:33,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:06:33,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:06:33" (1/3) ... [2025-02-06 13:06:33,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d180df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:06:33, skipping insertion in model container [2025-02-06 13:06:33,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:33" (2/3) ... [2025-02-06 13:06:33,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d180df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:06:33, skipping insertion in model container [2025-02-06 13:06:33,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:06:33" (3/3) ... [2025-02-06 13:06:33,875 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2025-02-06 13:06:33,885 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:06:33,886 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-determinism.wvr.c that has 5 procedures, 39 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2025-02-06 13:06:33,886 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:06:33,940 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 13:06:33,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2025-02-06 13:06:33,995 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2025-02-06 13:06:33,997 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 13:06:33,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-02-06 13:06:33,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2025-02-06 13:06:34,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2025-02-06 13:06:34,006 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:06:34,013 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;@2362c22a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:06:34,014 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-06 13:06:34,023 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:06:34,023 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-02-06 13:06:34,023 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 13:06:34,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:34,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:34,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:06:34,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:34,028 INFO L85 PathProgramCache]: Analyzing trace with hash 38495472, now seen corresponding path program 1 times [2025-02-06 13:06:34,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:34,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536240228] [2025-02-06 13:06:34,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:06:34,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:34,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 13:06:34,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 13:06:34,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:06:34,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:34,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536240228] [2025-02-06 13:06:34,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536240228] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:34,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:34,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:06:34,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175241661] [2025-02-06 13:06:34,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:34,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:06:34,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:34,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:06:34,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:06:34,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-02-06 13:06:34,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:34,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:34,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-02-06 13:06:34,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:34,886 INFO L124 PetriNetUnfolderBase]: 5145/6904 cut-off events. [2025-02-06 13:06:34,886 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2025-02-06 13:06:34,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14135 conditions, 6904 events. 5145/6904 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 30829 event pairs, 1020 based on Foata normal form. 2/6292 useless extension candidates. Maximal degree in co-relation 12513. Up to 5288 conditions per place. [2025-02-06 13:06:34,918 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 51 selfloop transitions, 5 changer transitions 1/60 dead transitions. [2025-02-06 13:06:34,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 279 flow [2025-02-06 13:06:34,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:06:34,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:06:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2025-02-06 13:06:34,929 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6587301587301587 [2025-02-06 13:06:34,930 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 83 transitions. [2025-02-06 13:06:34,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 279 flow [2025-02-06 13:06:34,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 60 transitions, 249 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-06 13:06:34,948 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 111 flow [2025-02-06 13:06:34,950 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2025-02-06 13:06:34,955 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2025-02-06 13:06:34,955 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 111 flow [2025-02-06 13:06:34,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:34,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:34,956 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:34,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:06:34,957 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:06:34,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:34,958 INFO L85 PathProgramCache]: Analyzing trace with hash -775783981, now seen corresponding path program 1 times [2025-02-06 13:06:34,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:34,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434882559] [2025-02-06 13:06:34,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:06:34,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:34,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 13:06:34,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:06:34,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:06:34,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:35,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:35,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434882559] [2025-02-06 13:06:35,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434882559] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:35,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:35,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:06:35,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998669865] [2025-02-06 13:06:35,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:35,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:06:35,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:35,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:06:35,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:06:35,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-06 13:06:35,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:35,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:35,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-06 13:06:35,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:35,955 INFO L124 PetriNetUnfolderBase]: 11897/15433 cut-off events. [2025-02-06 13:06:35,955 INFO L125 PetriNetUnfolderBase]: For 1960/1997 co-relation queries the response was YES. [2025-02-06 13:06:35,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35104 conditions, 15433 events. 11897/15433 cut-off events. For 1960/1997 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 73422 event pairs, 3629 based on Foata normal form. 2/13224 useless extension candidates. Maximal degree in co-relation 5584. Up to 7867 conditions per place. [2025-02-06 13:06:36,014 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 101 selfloop transitions, 10 changer transitions 0/113 dead transitions. [2025-02-06 13:06:36,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 113 transitions, 540 flow [2025-02-06 13:06:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:06:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:06:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-02-06 13:06:36,015 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2025-02-06 13:06:36,015 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 111 flow. Second operand 5 states and 133 transitions. [2025-02-06 13:06:36,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 113 transitions, 540 flow [2025-02-06 13:06:36,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 113 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 13:06:36,017 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 169 flow [2025-02-06 13:06:36,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2025-02-06 13:06:36,018 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2025-02-06 13:06:36,018 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 169 flow [2025-02-06 13:06:36,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:36,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:36,018 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:36,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 13:06:36,019 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:06:36,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:36,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1782274233, now seen corresponding path program 2 times [2025-02-06 13:06:36,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:36,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016796164] [2025-02-06 13:06:36,020 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:06:36,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:36,027 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:06:36,034 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:06:36,034 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:06:36,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:36,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:36,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016796164] [2025-02-06 13:06:36,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016796164] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:06:36,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775960419] [2025-02-06 13:06:36,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:06:36,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:06:36,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:06:36,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:06:36,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 13:06:36,210 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:06:36,231 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:06:36,231 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:06:36,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:36,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 13:06:36,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:06:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:36,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:06:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:36,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775960419] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:06:36,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:06:36,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2025-02-06 13:06:36,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223458182] [2025-02-06 13:06:36,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:06:36,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 13:06:36,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:36,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 13:06:36,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-06 13:06:36,371 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-06 13:06:36,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 169 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:36,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:36,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-06 13:06:36,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:37,601 INFO L124 PetriNetUnfolderBase]: 16200/21085 cut-off events. [2025-02-06 13:06:37,601 INFO L125 PetriNetUnfolderBase]: For 7124/7124 co-relation queries the response was YES. [2025-02-06 13:06:37,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54801 conditions, 21085 events. 16200/21085 cut-off events. For 7124/7124 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 106381 event pairs, 1341 based on Foata normal form. 346/20599 useless extension candidates. Maximal degree in co-relation 27430. Up to 4494 conditions per place. [2025-02-06 13:06:37,705 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 260 selfloop transitions, 36 changer transitions 0/298 dead transitions. [2025-02-06 13:06:37,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 298 transitions, 1478 flow [2025-02-06 13:06:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 13:06:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 13:06:37,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 366 transitions. [2025-02-06 13:06:37,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2025-02-06 13:06:37,708 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 169 flow. Second operand 14 states and 366 transitions. [2025-02-06 13:06:37,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 298 transitions, 1478 flow [2025-02-06 13:06:37,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 298 transitions, 1478 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 13:06:37,719 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 405 flow [2025-02-06 13:06:37,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=405, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2025-02-06 13:06:37,720 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2025-02-06 13:06:37,720 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 405 flow [2025-02-06 13:06:37,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:37,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:37,720 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:37,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 13:06:37,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:06:37,925 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:06:37,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:37,926 INFO L85 PathProgramCache]: Analyzing trace with hash -493380627, now seen corresponding path program 3 times [2025-02-06 13:06:37,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:37,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582703946] [2025-02-06 13:06:37,926 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:06:37,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:37,933 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:06:37,939 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:06:37,939 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:06:37,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:38,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:38,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582703946] [2025-02-06 13:06:38,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582703946] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:38,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:38,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:06:38,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254962303] [2025-02-06 13:06:38,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:38,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:06:38,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:38,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:06:38,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:06:38,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-06 13:06:38,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 405 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:38,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:38,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-06 13:06:38,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:39,261 INFO L124 PetriNetUnfolderBase]: 22784/29853 cut-off events. [2025-02-06 13:06:39,261 INFO L125 PetriNetUnfolderBase]: For 36227/36227 co-relation queries the response was YES. [2025-02-06 13:06:39,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91261 conditions, 29853 events. 22784/29853 cut-off events. For 36227/36227 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 154912 event pairs, 6160 based on Foata normal form. 76/28749 useless extension candidates. Maximal degree in co-relation 82690. Up to 14037 conditions per place. [2025-02-06 13:06:39,481 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 145 selfloop transitions, 19 changer transitions 0/166 dead transitions. [2025-02-06 13:06:39,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 166 transitions, 1106 flow [2025-02-06 13:06:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:06:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:06:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2025-02-06 13:06:39,483 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2025-02-06 13:06:39,484 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 405 flow. Second operand 5 states and 132 transitions. [2025-02-06 13:06:39,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 166 transitions, 1106 flow [2025-02-06 13:06:39,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 166 transitions, 1059 flow, removed 13 selfloop flow, removed 1 redundant places. [2025-02-06 13:06:39,793 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 504 flow [2025-02-06 13:06:39,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=504, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2025-02-06 13:06:39,794 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2025-02-06 13:06:39,794 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 504 flow [2025-02-06 13:06:39,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:39,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:39,794 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:39,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 13:06:39,794 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:06:39,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:39,795 INFO L85 PathProgramCache]: Analyzing trace with hash 61485161, now seen corresponding path program 1 times [2025-02-06 13:06:39,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:39,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559689891] [2025-02-06 13:06:39,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:06:39,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:39,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 13:06:39,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:06:39,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:06:39,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:39,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:39,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559689891] [2025-02-06 13:06:39,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559689891] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:39,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:39,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:06:39,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057877819] [2025-02-06 13:06:39,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:39,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:06:39,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:39,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:06:39,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:06:39,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-06 13:06:39,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 504 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:39,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:39,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-06 13:06:39,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:41,664 INFO L124 PetriNetUnfolderBase]: 25215/33211 cut-off events. [2025-02-06 13:06:41,664 INFO L125 PetriNetUnfolderBase]: For 51132/51274 co-relation queries the response was YES. [2025-02-06 13:06:41,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104163 conditions, 33211 events. 25215/33211 cut-off events. For 51132/51274 co-relation queries the response was YES. Maximal size of possible extension queue 1157. Compared 177108 event pairs, 7139 based on Foata normal form. 0/30400 useless extension candidates. Maximal degree in co-relation 92606. Up to 14514 conditions per place. [2025-02-06 13:06:41,872 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 139 selfloop transitions, 17 changer transitions 0/160 dead transitions. [2025-02-06 13:06:41,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 160 transitions, 1103 flow [2025-02-06 13:06:41,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:06:41,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:06:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2025-02-06 13:06:41,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2025-02-06 13:06:41,878 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 504 flow. Second operand 5 states and 137 transitions. [2025-02-06 13:06:41,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 160 transitions, 1103 flow [2025-02-06 13:06:42,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 160 transitions, 1056 flow, removed 14 selfloop flow, removed 1 redundant places. [2025-02-06 13:06:42,130 INFO L231 Difference]: Finished difference. Result has 75 places, 86 transitions, 533 flow [2025-02-06 13:06:42,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=533, PETRI_PLACES=75, PETRI_TRANSITIONS=86} [2025-02-06 13:06:42,132 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2025-02-06 13:06:42,132 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 86 transitions, 533 flow [2025-02-06 13:06:42,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:42,133 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:42,133 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:42,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 13:06:42,133 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:06:42,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:42,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1975266725, now seen corresponding path program 1 times [2025-02-06 13:06:42,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:42,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052465258] [2025-02-06 13:06:42,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:06:42,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:42,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 13:06:42,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:06:42,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:06:42,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:42,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:42,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052465258] [2025-02-06 13:06:42,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052465258] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:42,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:42,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:06:42,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034793201] [2025-02-06 13:06:42,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:42,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:06:42,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:42,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:06:42,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:06:42,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-02-06 13:06:42,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 86 transitions, 533 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:42,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:42,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-02-06 13:06:42,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:42,931 INFO L124 PetriNetUnfolderBase]: 13368/17935 cut-off events. [2025-02-06 13:06:42,932 INFO L125 PetriNetUnfolderBase]: For 38584/39680 co-relation queries the response was YES. [2025-02-06 13:06:42,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59055 conditions, 17935 events. 13368/17935 cut-off events. For 38584/39680 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 92486 event pairs, 4232 based on Foata normal form. 597/17723 useless extension candidates. Maximal degree in co-relation 48933. Up to 12915 conditions per place. [2025-02-06 13:06:43,008 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 92 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2025-02-06 13:06:43,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 99 transitions, 731 flow [2025-02-06 13:06:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:06:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:06:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2025-02-06 13:06:43,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2025-02-06 13:06:43,009 INFO L175 Difference]: Start difference. First operand has 75 places, 86 transitions, 533 flow. Second operand 3 states and 82 transitions. [2025-02-06 13:06:43,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 99 transitions, 731 flow [2025-02-06 13:06:43,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 99 transitions, 709 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-06 13:06:43,044 INFO L231 Difference]: Finished difference. Result has 73 places, 75 transitions, 440 flow [2025-02-06 13:06:43,044 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=73, PETRI_TRANSITIONS=75} [2025-02-06 13:06:43,045 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2025-02-06 13:06:43,045 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 75 transitions, 440 flow [2025-02-06 13:06:43,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:43,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:43,045 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:43,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 13:06:43,045 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:06:43,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:43,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1714628283, now seen corresponding path program 2 times [2025-02-06 13:06:43,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:43,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931016271] [2025-02-06 13:06:43,046 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:06:43,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:43,051 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-02-06 13:06:43,058 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:06:43,058 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:06:43,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:43,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:43,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:43,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931016271] [2025-02-06 13:06:43,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931016271] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:43,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:43,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:06:43,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912251842] [2025-02-06 13:06:43,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:43,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:06:43,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:43,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:06:43,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:06:43,111 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-06 13:06:43,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:43,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:43,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-06 13:06:43,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:44,656 INFO L124 PetriNetUnfolderBase]: 25352/33180 cut-off events. [2025-02-06 13:06:44,656 INFO L125 PetriNetUnfolderBase]: For 62046/62046 co-relation queries the response was YES. [2025-02-06 13:06:44,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112497 conditions, 33180 events. 25352/33180 cut-off events. For 62046/62046 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 169885 event pairs, 8858 based on Foata normal form. 180/30316 useless extension candidates. Maximal degree in co-relation 95596. Up to 19522 conditions per place. [2025-02-06 13:06:44,839 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 133 selfloop transitions, 33 changer transitions 0/167 dead transitions. [2025-02-06 13:06:44,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 167 transitions, 1301 flow [2025-02-06 13:06:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:06:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:06:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-02-06 13:06:44,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-06 13:06:44,840 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 440 flow. Second operand 5 states and 130 transitions. [2025-02-06 13:06:44,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 167 transitions, 1301 flow [2025-02-06 13:06:45,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 167 transitions, 1294 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 13:06:45,052 INFO L231 Difference]: Finished difference. Result has 79 places, 96 transitions, 711 flow [2025-02-06 13:06:45,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=711, PETRI_PLACES=79, PETRI_TRANSITIONS=96} [2025-02-06 13:06:45,053 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-02-06 13:06:45,053 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 96 transitions, 711 flow [2025-02-06 13:06:45,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:45,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:45,053 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:45,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 13:06:45,053 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:06:45,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash -18790587, now seen corresponding path program 3 times [2025-02-06 13:06:45,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:45,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132970718] [2025-02-06 13:06:45,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:06:45,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:45,059 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 1 equivalence classes. [2025-02-06 13:06:45,065 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:06:45,065 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 13:06:45,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:45,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:45,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132970718] [2025-02-06 13:06:45,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132970718] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:45,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:45,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:06:45,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878578016] [2025-02-06 13:06:45,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:45,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:06:45,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:45,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:06:45,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:06:45,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-06 13:06:45,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 96 transitions, 711 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:45,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:45,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-06 13:06:45,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:47,007 INFO L124 PetriNetUnfolderBase]: 32000/41833 cut-off events. [2025-02-06 13:06:47,008 INFO L125 PetriNetUnfolderBase]: For 111899/112087 co-relation queries the response was YES. [2025-02-06 13:06:47,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157830 conditions, 41833 events. 32000/41833 cut-off events. For 111899/112087 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 220305 event pairs, 10363 based on Foata normal form. 86/39986 useless extension candidates. Maximal degree in co-relation 124694. Up to 22982 conditions per place. [2025-02-06 13:06:47,352 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 172 selfloop transitions, 24 changer transitions 0/200 dead transitions. [2025-02-06 13:06:47,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 200 transitions, 1747 flow [2025-02-06 13:06:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:06:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:06:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2025-02-06 13:06:47,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6047619047619047 [2025-02-06 13:06:47,353 INFO L175 Difference]: Start difference. First operand has 79 places, 96 transitions, 711 flow. Second operand 5 states and 127 transitions. [2025-02-06 13:06:47,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 200 transitions, 1747 flow [2025-02-06 13:06:48,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 200 transitions, 1701 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-06 13:06:48,019 INFO L231 Difference]: Finished difference. Result has 85 places, 114 transitions, 960 flow [2025-02-06 13:06:48,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=960, PETRI_PLACES=85, PETRI_TRANSITIONS=114} [2025-02-06 13:06:48,020 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2025-02-06 13:06:48,020 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 114 transitions, 960 flow [2025-02-06 13:06:48,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:48,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:48,021 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:48,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 13:06:48,021 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:06:48,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:48,021 INFO L85 PathProgramCache]: Analyzing trace with hash 475019667, now seen corresponding path program 1 times [2025-02-06 13:06:48,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:48,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909732524] [2025-02-06 13:06:48,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:06:48,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:48,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 13:06:48,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:06:48,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:06:48,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:48,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:48,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909732524] [2025-02-06 13:06:48,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909732524] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:48,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:48,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:06:48,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642433854] [2025-02-06 13:06:48,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:48,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:06:48,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:48,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:06:48,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:06:48,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2025-02-06 13:06:48,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 114 transitions, 960 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:48,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:48,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2025-02-06 13:06:48,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:49,708 INFO L124 PetriNetUnfolderBase]: 22425/30386 cut-off events. [2025-02-06 13:06:49,708 INFO L125 PetriNetUnfolderBase]: For 100676/102796 co-relation queries the response was YES. [2025-02-06 13:06:49,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119363 conditions, 30386 events. 22425/30386 cut-off events. For 100676/102796 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 167326 event pairs, 5934 based on Foata normal form. 115/29432 useless extension candidates. Maximal degree in co-relation 95467. Up to 19373 conditions per place. [2025-02-06 13:06:49,902 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 168 selfloop transitions, 3 changer transitions 7/184 dead transitions. [2025-02-06 13:06:49,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 184 transitions, 1944 flow [2025-02-06 13:06:49,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:06:49,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:06:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2025-02-06 13:06:49,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-06 13:06:49,904 INFO L175 Difference]: Start difference. First operand has 85 places, 114 transitions, 960 flow. Second operand 3 states and 78 transitions. [2025-02-06 13:06:49,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 184 transitions, 1944 flow [2025-02-06 13:06:50,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 184 transitions, 1928 flow, removed 8 selfloop flow, removed 0 redundant places. [2025-02-06 13:06:50,040 INFO L231 Difference]: Finished difference. Result has 88 places, 111 transitions, 934 flow [2025-02-06 13:06:50,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=934, PETRI_PLACES=88, PETRI_TRANSITIONS=111} [2025-02-06 13:06:50,040 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 42 predicate places. [2025-02-06 13:06:50,040 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 111 transitions, 934 flow [2025-02-06 13:06:50,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:50,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:50,041 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:50,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 13:06:50,041 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:06:50,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:50,041 INFO L85 PathProgramCache]: Analyzing trace with hash 814392643, now seen corresponding path program 4 times [2025-02-06 13:06:50,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:50,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76583777] [2025-02-06 13:06:50,042 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:06:50,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:50,046 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:06:50,049 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 25 of 26 statements. [2025-02-06 13:06:50,049 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 13:06:50,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:50,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:50,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76583777] [2025-02-06 13:06:50,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76583777] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:06:50,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013087703] [2025-02-06 13:06:50,087 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:06:50,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:06:50,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:06:50,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:06:50,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 13:06:50,130 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:06:50,142 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 25 of 26 statements. [2025-02-06 13:06:50,142 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 13:06:50,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:50,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 13:06:50,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:06:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:50,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:06:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:50,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013087703] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:06:50,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:06:50,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-02-06 13:06:50,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103905643] [2025-02-06 13:06:50,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:06:50,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 13:06:50,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:50,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 13:06:50,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 13:06:50,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-06 13:06:50,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 111 transitions, 934 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:50,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:50,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-06 13:06:50,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:52,107 INFO L124 PetriNetUnfolderBase]: 29557/39350 cut-off events. [2025-02-06 13:06:52,107 INFO L125 PetriNetUnfolderBase]: For 117899/121280 co-relation queries the response was YES. [2025-02-06 13:06:52,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152236 conditions, 39350 events. 29557/39350 cut-off events. For 117899/121280 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 215413 event pairs, 6648 based on Foata normal form. 684/39873 useless extension candidates. Maximal degree in co-relation 131004. Up to 14499 conditions per place. [2025-02-06 13:06:52,733 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 255 selfloop transitions, 38 changer transitions 0/296 dead transitions. [2025-02-06 13:06:52,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 296 transitions, 2638 flow [2025-02-06 13:06:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 13:06:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 13:06:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2025-02-06 13:06:52,734 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6220238095238095 [2025-02-06 13:06:52,734 INFO L175 Difference]: Start difference. First operand has 88 places, 111 transitions, 934 flow. Second operand 8 states and 209 transitions. [2025-02-06 13:06:52,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 296 transitions, 2638 flow [2025-02-06 13:06:53,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 296 transitions, 2587 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-02-06 13:06:53,009 INFO L231 Difference]: Finished difference. Result has 95 places, 129 transitions, 1220 flow [2025-02-06 13:06:53,010 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1220, PETRI_PLACES=95, PETRI_TRANSITIONS=129} [2025-02-06 13:06:53,010 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2025-02-06 13:06:53,010 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 129 transitions, 1220 flow [2025-02-06 13:06:53,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:53,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:53,011 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:53,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 13:06:53,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:06:53,212 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:06:53,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:53,212 INFO L85 PathProgramCache]: Analyzing trace with hash -315360165, now seen corresponding path program 4 times [2025-02-06 13:06:53,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:53,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181466121] [2025-02-06 13:06:53,212 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:06:53,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:53,216 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:06:53,219 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 25 of 26 statements. [2025-02-06 13:06:53,219 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 13:06:53,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:53,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:53,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181466121] [2025-02-06 13:06:53,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181466121] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:53,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:53,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:06:53,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095107180] [2025-02-06 13:06:53,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:53,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:06:53,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:53,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:06:53,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:06:53,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-06 13:06:53,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 129 transitions, 1220 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:53,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:53,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-06 13:06:53,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:55,859 INFO L124 PetriNetUnfolderBase]: 34620/45788 cut-off events. [2025-02-06 13:06:55,859 INFO L125 PetriNetUnfolderBase]: For 173533/173533 co-relation queries the response was YES. [2025-02-06 13:06:55,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185746 conditions, 45788 events. 34620/45788 cut-off events. For 173533/173533 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 240929 event pairs, 2792 based on Foata normal form. 408/46196 useless extension candidates. Maximal degree in co-relation 163231. Up to 15466 conditions per place. [2025-02-06 13:06:56,140 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 344 selfloop transitions, 88 changer transitions 13/446 dead transitions. [2025-02-06 13:06:56,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 446 transitions, 4805 flow [2025-02-06 13:06:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 13:06:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 13:06:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2025-02-06 13:06:56,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5502645502645502 [2025-02-06 13:06:56,142 INFO L175 Difference]: Start difference. First operand has 95 places, 129 transitions, 1220 flow. Second operand 9 states and 208 transitions. [2025-02-06 13:06:56,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 446 transitions, 4805 flow [2025-02-06 13:06:56,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 446 transitions, 4583 flow, removed 63 selfloop flow, removed 1 redundant places. [2025-02-06 13:06:56,638 INFO L231 Difference]: Finished difference. Result has 108 places, 184 transitions, 2146 flow [2025-02-06 13:06:56,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2146, PETRI_PLACES=108, PETRI_TRANSITIONS=184} [2025-02-06 13:06:56,638 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2025-02-06 13:06:56,638 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 184 transitions, 2146 flow [2025-02-06 13:06:56,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:56,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:56,639 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:56,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 13:06:56,639 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:06:56,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1820189259, now seen corresponding path program 5 times [2025-02-06 13:06:56,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:56,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604942768] [2025-02-06 13:06:56,639 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:06:56,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:56,644 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:06:56,646 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:06:56,646 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:06:56,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:56,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:56,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604942768] [2025-02-06 13:06:56,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604942768] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:06:56,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582642805] [2025-02-06 13:06:56,676 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:06:56,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:06:56,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:06:56,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:06:56,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 13:06:56,715 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:06:56,727 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:06:56,727 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:06:56,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:56,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 13:06:56,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:06:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:56,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:06:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:06:56,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582642805] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:06:56,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:06:56,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-06 13:06:56,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794686118] [2025-02-06 13:06:56,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:06:56,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 13:06:56,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:56,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 13:06:56,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-02-06 13:06:56,781 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-06 13:06:56,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 184 transitions, 2146 flow. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:06:56,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:56,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-06 13:06:56,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:59,760 INFO L124 PetriNetUnfolderBase]: 31493/42477 cut-off events. [2025-02-06 13:06:59,761 INFO L125 PetriNetUnfolderBase]: For 196082/197500 co-relation queries the response was YES. [2025-02-06 13:06:59,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183983 conditions, 42477 events. 31493/42477 cut-off events. For 196082/197500 co-relation queries the response was YES. Maximal size of possible extension queue 1219. Compared 240102 event pairs, 4440 based on Foata normal form. 754/43187 useless extension candidates. Maximal degree in co-relation 167828. Up to 11593 conditions per place. [2025-02-06 13:07:00,080 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 290 selfloop transitions, 72 changer transitions 0/368 dead transitions. [2025-02-06 13:07:00,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 368 transitions, 4115 flow [2025-02-06 13:07:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 13:07:00,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 13:07:00,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2025-02-06 13:07:00,081 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2025-02-06 13:07:00,081 INFO L175 Difference]: Start difference. First operand has 108 places, 184 transitions, 2146 flow. Second operand 8 states and 204 transitions. [2025-02-06 13:07:00,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 368 transitions, 4115 flow [2025-02-06 13:07:01,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 368 transitions, 3999 flow, removed 58 selfloop flow, removed 0 redundant places. [2025-02-06 13:07:01,095 INFO L231 Difference]: Finished difference. Result has 119 places, 193 transitions, 2408 flow [2025-02-06 13:07:01,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2408, PETRI_PLACES=119, PETRI_TRANSITIONS=193} [2025-02-06 13:07:01,095 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 73 predicate places. [2025-02-06 13:07:01,095 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 193 transitions, 2408 flow [2025-02-06 13:07:01,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:07:01,096 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:01,096 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:01,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 13:07:01,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:01,300 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:07:01,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1390632555, now seen corresponding path program 5 times [2025-02-06 13:07:01,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:01,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97351900] [2025-02-06 13:07:01,300 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:07:01,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:01,306 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:07:01,311 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:07:01,311 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:07:01,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:01,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:01,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97351900] [2025-02-06 13:07:01,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97351900] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:07:01,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054419301] [2025-02-06 13:07:01,360 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:07:01,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:01,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:07:01,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:07:01,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 13:07:01,396 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:07:01,411 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:07:01,412 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:07:01,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:01,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 13:07:01,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:07:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:01,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:01,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054419301] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:01,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:01,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-06 13:07:01,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758513469] [2025-02-06 13:07:01,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:01,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:07:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:01,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:07:01,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:07:01,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-02-06 13:07:01,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 193 transitions, 2408 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:07:01,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:01,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-02-06 13:07:01,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:05,328 INFO L124 PetriNetUnfolderBase]: 38430/50953 cut-off events. [2025-02-06 13:07:05,329 INFO L125 PetriNetUnfolderBase]: For 308941/308941 co-relation queries the response was YES. [2025-02-06 13:07:05,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235247 conditions, 50953 events. 38430/50953 cut-off events. For 308941/308941 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 275705 event pairs, 11047 based on Foata normal form. 288/51241 useless extension candidates. Maximal degree in co-relation 213304. Up to 21759 conditions per place. [2025-02-06 13:07:05,665 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 202 selfloop transitions, 112 changer transitions 2/317 dead transitions. [2025-02-06 13:07:05,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 317 transitions, 3913 flow [2025-02-06 13:07:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:07:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:07:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2025-02-06 13:07:05,667 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2025-02-06 13:07:05,667 INFO L175 Difference]: Start difference. First operand has 119 places, 193 transitions, 2408 flow. Second operand 7 states and 177 transitions. [2025-02-06 13:07:05,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 317 transitions, 3913 flow [2025-02-06 13:07:06,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 317 transitions, 3859 flow, removed 27 selfloop flow, removed 0 redundant places. [2025-02-06 13:07:06,910 INFO L231 Difference]: Finished difference. Result has 127 places, 206 transitions, 2871 flow [2025-02-06 13:07:06,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2366, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2871, PETRI_PLACES=127, PETRI_TRANSITIONS=206} [2025-02-06 13:07:06,910 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 81 predicate places. [2025-02-06 13:07:06,910 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 206 transitions, 2871 flow [2025-02-06 13:07:06,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:07:06,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:06,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:06,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 13:07:07,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-06 13:07:07,111 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:07:07,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:07,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1738210921, now seen corresponding path program 6 times [2025-02-06 13:07:07,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:07,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561507911] [2025-02-06 13:07:07,112 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:07:07,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:07,118 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 1 equivalence classes. [2025-02-06 13:07:07,121 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:07:07,121 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 13:07:07,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:07,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:07,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561507911] [2025-02-06 13:07:07,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561507911] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:07:07,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:07:07,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:07:07,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794317043] [2025-02-06 13:07:07,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:07:07,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:07:07,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:07,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:07:07,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:07:07,176 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-06 13:07:07,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 206 transitions, 2871 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:07:07,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:07,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-06 13:07:07,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:10,532 INFO L124 PetriNetUnfolderBase]: 35966/48172 cut-off events. [2025-02-06 13:07:10,532 INFO L125 PetriNetUnfolderBase]: For 306947/307161 co-relation queries the response was YES. [2025-02-06 13:07:10,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229239 conditions, 48172 events. 35966/48172 cut-off events. For 306947/307161 co-relation queries the response was YES. Maximal size of possible extension queue 1350. Compared 265878 event pairs, 16983 based on Foata normal form. 98/48123 useless extension candidates. Maximal degree in co-relation 209696. Up to 32407 conditions per place. [2025-02-06 13:07:10,927 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 142 selfloop transitions, 71 changer transitions 17/266 dead transitions. [2025-02-06 13:07:10,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 266 transitions, 3707 flow [2025-02-06 13:07:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:07:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:07:10,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2025-02-06 13:07:10,929 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2025-02-06 13:07:10,930 INFO L175 Difference]: Start difference. First operand has 127 places, 206 transitions, 2871 flow. Second operand 5 states and 124 transitions. [2025-02-06 13:07:10,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 266 transitions, 3707 flow [2025-02-06 13:07:12,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 266 transitions, 3619 flow, removed 17 selfloop flow, removed 1 redundant places. [2025-02-06 13:07:12,247 INFO L231 Difference]: Finished difference. Result has 131 places, 200 transitions, 2815 flow [2025-02-06 13:07:12,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2815, PETRI_PLACES=131, PETRI_TRANSITIONS=200} [2025-02-06 13:07:12,247 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 85 predicate places. [2025-02-06 13:07:12,248 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 200 transitions, 2815 flow [2025-02-06 13:07:12,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:07:12,248 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:12,249 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:12,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 13:07:12,249 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:07:12,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:12,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1851950085, now seen corresponding path program 6 times [2025-02-06 13:07:12,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:12,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514919853] [2025-02-06 13:07:12,253 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:07:12,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:12,255 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 2 equivalence classes. [2025-02-06 13:07:12,260 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:07:12,261 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 13:07:12,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:12,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:12,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514919853] [2025-02-06 13:07:12,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514919853] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:07:12,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:07:12,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:07:12,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686189785] [2025-02-06 13:07:12,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:07:12,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:07:12,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:12,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:07:12,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:07:12,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-06 13:07:12,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 200 transitions, 2815 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:07:12,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:12,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-06 13:07:12,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:15,467 INFO L124 PetriNetUnfolderBase]: 32442/43404 cut-off events. [2025-02-06 13:07:15,467 INFO L125 PetriNetUnfolderBase]: For 306225/308297 co-relation queries the response was YES. [2025-02-06 13:07:15,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207075 conditions, 43404 events. 32442/43404 cut-off events. For 306225/308297 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 240064 event pairs, 9711 based on Foata normal form. 516/43838 useless extension candidates. Maximal degree in co-relation 188334. Up to 23189 conditions per place. [2025-02-06 13:07:15,764 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 256 selfloop transitions, 45 changer transitions 8/315 dead transitions. [2025-02-06 13:07:15,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 315 transitions, 4520 flow [2025-02-06 13:07:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:07:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:07:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-02-06 13:07:15,765 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-06 13:07:15,765 INFO L175 Difference]: Start difference. First operand has 131 places, 200 transitions, 2815 flow. Second operand 5 states and 130 transitions. [2025-02-06 13:07:15,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 315 transitions, 4520 flow [2025-02-06 13:07:16,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 315 transitions, 4170 flow, removed 14 selfloop flow, removed 6 redundant places. [2025-02-06 13:07:16,674 INFO L231 Difference]: Finished difference. Result has 130 places, 220 transitions, 3056 flow [2025-02-06 13:07:16,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2563, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3056, PETRI_PLACES=130, PETRI_TRANSITIONS=220} [2025-02-06 13:07:16,674 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 84 predicate places. [2025-02-06 13:07:16,674 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 220 transitions, 3056 flow [2025-02-06 13:07:16,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:07:16,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:16,675 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:16,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 13:07:16,675 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 13:07:16,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:16,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1894917639, now seen corresponding path program 7 times [2025-02-06 13:07:16,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:16,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132082492] [2025-02-06 13:07:16,676 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:07:16,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:16,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 13:07:16,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 13:07:16,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:07:16,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:16,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:16,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132082492] [2025-02-06 13:07:16,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132082492] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:07:16,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:07:16,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 13:07:16,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423541468] [2025-02-06 13:07:16,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:07:16,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:07:16,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:16,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:07:16,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:07:16,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-02-06 13:07:16,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 220 transitions, 3056 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:07:16,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:16,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-02-06 13:07:16,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:20,201 INFO L124 PetriNetUnfolderBase]: 37190/49503 cut-off events. [2025-02-06 13:07:20,201 INFO L125 PetriNetUnfolderBase]: For 341516/342096 co-relation queries the response was YES. [2025-02-06 13:07:20,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234357 conditions, 49503 events. 37190/49503 cut-off events. For 341516/342096 co-relation queries the response was YES. Maximal size of possible extension queue 1372. Compared 274389 event pairs, 12649 based on Foata normal form. 610/49974 useless extension candidates. Maximal degree in co-relation 211914. Up to 32042 conditions per place. [2025-02-06 13:07:20,618 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 356 selfloop transitions, 24 changer transitions 6/422 dead transitions. [2025-02-06 13:07:20,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 422 transitions, 6082 flow [2025-02-06 13:07:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:07:20,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:07:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2025-02-06 13:07:20,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2025-02-06 13:07:20,619 INFO L175 Difference]: Start difference. First operand has 130 places, 220 transitions, 3056 flow. Second operand 5 states and 125 transitions. [2025-02-06 13:07:20,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 422 transitions, 6082 flow