./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/triangular-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:11:21,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:11:21,595 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:11:21,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:11:21,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:11:21,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:11:21,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:11:21,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:11:21,614 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:11:21,614 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:11:21,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:11:21,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:11:21,615 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:11:21,615 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:11:21,615 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:11:21,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:11:21,615 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:11:21,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:11:21,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:11:21,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:11:21,615 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:11:21,616 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:11:21,616 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:11:21,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:11:21,616 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:11:21,616 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:11:21,616 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:11:21,616 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:11:21,616 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:11:21,616 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:11:21,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:11:21,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:11:21,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:11:21,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:21,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:11:21,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:11:21,617 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:11:21,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:11:21,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:11:21,617 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:11:21,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:11:21,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:11:21,617 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 -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2025-02-08 08:11:21,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:11:21,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:11:21,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:11:21,880 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:11:21,880 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:11:21,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-2.i [2025-02-08 08:11:23,183 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9588e8b33/87b31eec5bd54982bfd382a4f95fce58/FLAG5ee061811 [2025-02-08 08:11:23,518 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:11:23,519 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-2.i [2025-02-08 08:11:23,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9588e8b33/87b31eec5bd54982bfd382a4f95fce58/FLAG5ee061811 [2025-02-08 08:11:23,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9588e8b33/87b31eec5bd54982bfd382a4f95fce58 [2025-02-08 08:11:23,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:11:23,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:11:23,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:23,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:11:23,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:11:23,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29eb79d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23, skipping insertion in model container [2025-02-08 08:11:23,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,586 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:11:23,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:23,827 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:11:23,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:23,902 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:11:23,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23 WrapperNode [2025-02-08 08:11:23,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:23,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:23,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:11:23,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:11:23,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,938 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-02-08 08:11:23,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:23,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:11:23,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:11:23,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:11:23,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,948 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,960 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]. [2025-02-08 08:11:23,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,965 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:11:23,975 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:11:23,975 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:11:23,975 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:11:23,976 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (1/1) ... [2025-02-08 08:11:23,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:23,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:24,008 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) [2025-02-08 08:11:24,012 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 [2025-02-08 08:11:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-08 08:11:24,030 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-08 08:11:24,030 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-08 08:11:24,031 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-08 08:11:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:11:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:11:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:11:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:11:24,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:11:24,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:11:24,033 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:11:24,129 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:11:24,130 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:11:24,266 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:11:24,268 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:11:24,330 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:11:24,331 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:11:24,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:24 BoogieIcfgContainer [2025-02-08 08:11:24,331 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:11:24,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:11:24,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:11:24,336 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:11:24,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:11:23" (1/3) ... [2025-02-08 08:11:24,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6a7996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:24, skipping insertion in model container [2025-02-08 08:11:24,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:23" (2/3) ... [2025-02-08 08:11:24,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6a7996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:24, skipping insertion in model container [2025-02-08 08:11:24,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:24" (3/3) ... [2025-02-08 08:11:24,338 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2025-02-08 08:11:24,349 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:11:24,350 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-2.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-08 08:11:24,350 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:11:24,385 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 08:11:24,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2025-02-08 08:11:24,444 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-02-08 08:11:24,450 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:11:24,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-08 08:11:24,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2025-02-08 08:11:24,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2025-02-08 08:11:24,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:11:24,469 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;@78d48bb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:11:24,470 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 08:11:24,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:11:24,476 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-02-08 08:11:24,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:11:24,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:24,477 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:24,477 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:24,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:24,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1190746502, now seen corresponding path program 1 times [2025-02-08 08:11:24,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:24,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349790347] [2025-02-08 08:11:24,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:24,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:24,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:11:24,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:11:24,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:24,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:24,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:24,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349790347] [2025-02-08 08:11:24,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349790347] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:24,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:24,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:11:24,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136617702] [2025-02-08 08:11:24,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:24,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:11:24,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:24,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:11:24,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:11:24,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:24,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2025-02-08 08:11:24,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:24,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:24,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:24,835 INFO L124 PetriNetUnfolderBase]: 185/359 cut-off events. [2025-02-08 08:11:24,836 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:11:24,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 359 events. 185/359 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1574 event pairs, 135 based on Foata normal form. 32/386 useless extension candidates. Maximal degree in co-relation 653. Up to 290 conditions per place. [2025-02-08 08:11:24,841 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 15 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2025-02-08 08:11:24,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 86 flow [2025-02-08 08:11:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:11:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:11:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-02-08 08:11:24,853 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-02-08 08:11:24,854 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 44 transitions. [2025-02-08 08:11:24,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 86 flow [2025-02-08 08:11:24,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:11:24,859 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2025-02-08 08:11:24,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2025-02-08 08:11:24,864 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2025-02-08 08:11:24,865 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2025-02-08 08:11:24,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2025-02-08 08:11:24,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:24,866 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:24,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:11:24,866 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:24,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:24,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1190746953, now seen corresponding path program 1 times [2025-02-08 08:11:24,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:24,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636526696] [2025-02-08 08:11:24,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:24,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:24,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:11:24,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:11:24,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:24,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:25,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636526696] [2025-02-08 08:11:25,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636526696] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:25,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:25,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:11:25,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798923600] [2025-02-08 08:11:25,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:25,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:11:25,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:25,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:11:25,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:11:25,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:25,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:25,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:25,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:25,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:25,140 INFO L124 PetriNetUnfolderBase]: 273/487 cut-off events. [2025-02-08 08:11:25,140 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:11:25,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 487 events. 273/487 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1985 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 921. Up to 181 conditions per place. [2025-02-08 08:11:25,143 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 4 changer transitions 21/54 dead transitions. [2025-02-08 08:11:25,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 212 flow [2025-02-08 08:11:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:11:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 08:11:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2025-02-08 08:11:25,144 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2025-02-08 08:11:25,144 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 6 states and 99 transitions. [2025-02-08 08:11:25,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 212 flow [2025-02-08 08:11:25,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:11:25,146 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2025-02-08 08:11:25,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2025-02-08 08:11:25,147 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2025-02-08 08:11:25,147 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2025-02-08 08:11:25,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:25,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:25,147 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:25,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:11:25,148 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:25,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1318103228, now seen corresponding path program 1 times [2025-02-08 08:11:25,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:25,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495780625] [2025-02-08 08:11:25,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:25,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:25,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:11:25,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:11:25,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:25,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:25,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:25,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495780625] [2025-02-08 08:11:25,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495780625] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:25,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:25,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:11:25,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875240644] [2025-02-08 08:11:25,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:25,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:11:25,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:25,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:11:25,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:11:25,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:25,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2025-02-08 08:11:25,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:25,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:25,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:25,469 INFO L124 PetriNetUnfolderBase]: 382/704 cut-off events. [2025-02-08 08:11:25,470 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2025-02-08 08:11:25,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 704 events. 382/704 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3083 event pairs, 65 based on Foata normal form. 27/727 useless extension candidates. Maximal degree in co-relation 1591. Up to 246 conditions per place. [2025-02-08 08:11:25,474 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 9 changer transitions 20/79 dead transitions. [2025-02-08 08:11:25,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 382 flow [2025-02-08 08:11:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:11:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 08:11:25,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-02-08 08:11:25,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-02-08 08:11:25,475 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 9 states and 144 transitions. [2025-02-08 08:11:25,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 382 flow [2025-02-08 08:11:25,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 366 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-02-08 08:11:25,478 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 159 flow [2025-02-08 08:11:25,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2025-02-08 08:11:25,478 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2025-02-08 08:11:25,479 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 159 flow [2025-02-08 08:11:25,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2025-02-08 08:11:25,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:25,479 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:25,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:11:25,479 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:25,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:25,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1201091516, now seen corresponding path program 2 times [2025-02-08 08:11:25,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:25,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341383858] [2025-02-08 08:11:25,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:25,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:25,485 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:11:25,488 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:11:25,488 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:11:25,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:25,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:25,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341383858] [2025-02-08 08:11:25,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341383858] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:25,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:25,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:11:25,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737030096] [2025-02-08 08:11:25,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:25,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:11:25,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:25,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:11:25,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:11:25,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:25,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2025-02-08 08:11:25,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:25,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:25,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:25,793 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2025-02-08 08:11:25,793 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2025-02-08 08:11:25,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 611 events. 328/611 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2599 event pairs, 65 based on Foata normal form. 45/652 useless extension candidates. Maximal degree in co-relation 1723. Up to 234 conditions per place. [2025-02-08 08:11:25,797 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 9 changer transitions 28/79 dead transitions. [2025-02-08 08:11:25,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 499 flow [2025-02-08 08:11:25,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:11:25,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:11:25,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2025-02-08 08:11:25,798 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2025-02-08 08:11:25,798 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 159 flow. Second operand 8 states and 127 transitions. [2025-02-08 08:11:25,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 499 flow [2025-02-08 08:11:25,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-08 08:11:25,803 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 213 flow [2025-02-08 08:11:25,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2025-02-08 08:11:25,804 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2025-02-08 08:11:25,804 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 213 flow [2025-02-08 08:11:25,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2025-02-08 08:11:25,804 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:25,804 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:25,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:11:25,804 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:25,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1701427140, now seen corresponding path program 1 times [2025-02-08 08:11:25,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:25,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355533672] [2025-02-08 08:11:25,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:25,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:25,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:11:25,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:11:25,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:25,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:25,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:25,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355533672] [2025-02-08 08:11:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355533672] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:25,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:25,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:11:25,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119023267] [2025-02-08 08:11:25,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:25,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:11:25,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:25,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:11:25,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:11:25,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:25,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-02-08 08:11:25,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:25,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:25,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:26,136 INFO L124 PetriNetUnfolderBase]: 355/662 cut-off events. [2025-02-08 08:11:26,137 INFO L125 PetriNetUnfolderBase]: For 1747/1747 co-relation queries the response was YES. [2025-02-08 08:11:26,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069 conditions, 662 events. 355/662 cut-off events. For 1747/1747 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2886 event pairs, 86 based on Foata normal form. 18/676 useless extension candidates. Maximal degree in co-relation 2046. Up to 258 conditions per place. [2025-02-08 08:11:26,140 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 43 selfloop transitions, 16 changer transitions 21/84 dead transitions. [2025-02-08 08:11:26,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 600 flow [2025-02-08 08:11:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:11:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 08:11:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-02-08 08:11:26,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2025-02-08 08:11:26,142 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 213 flow. Second operand 9 states and 140 transitions. [2025-02-08 08:11:26,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 600 flow [2025-02-08 08:11:26,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 530 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-02-08 08:11:26,148 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 300 flow [2025-02-08 08:11:26,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2025-02-08 08:11:26,148 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2025-02-08 08:11:26,149 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 300 flow [2025-02-08 08:11:26,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-02-08 08:11:26,149 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:26,149 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:26,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 08:11:26,153 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:26,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:26,153 INFO L85 PathProgramCache]: Analyzing trace with hash 661783278, now seen corresponding path program 2 times [2025-02-08 08:11:26,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:26,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374555872] [2025-02-08 08:11:26,153 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:26,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:26,159 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:11:26,165 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:11:26,166 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:11:26,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:26,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:26,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374555872] [2025-02-08 08:11:26,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374555872] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:26,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:26,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:11:26,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021227586] [2025-02-08 08:11:26,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:26,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:11:26,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:26,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:11:26,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:11:26,274 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:26,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-02-08 08:11:26,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:26,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:26,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:26,514 INFO L124 PetriNetUnfolderBase]: 463/849 cut-off events. [2025-02-08 08:11:26,514 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2025-02-08 08:11:26,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 849 events. 463/849 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3783 event pairs, 59 based on Foata normal form. 27/870 useless extension candidates. Maximal degree in co-relation 2724. Up to 154 conditions per place. [2025-02-08 08:11:26,520 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 25 changer transitions 30/103 dead transitions. [2025-02-08 08:11:26,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 764 flow [2025-02-08 08:11:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:11:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 08:11:26,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2025-02-08 08:11:26,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5360501567398119 [2025-02-08 08:11:26,525 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 300 flow. Second operand 11 states and 171 transitions. [2025-02-08 08:11:26,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 764 flow [2025-02-08 08:11:26,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 716 flow, removed 20 selfloop flow, removed 3 redundant places. [2025-02-08 08:11:26,536 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 424 flow [2025-02-08 08:11:26,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=424, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2025-02-08 08:11:26,537 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2025-02-08 08:11:26,538 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 424 flow [2025-02-08 08:11:26,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-02-08 08:11:26,539 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:26,539 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:26,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 08:11:26,539 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:26,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:26,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1798932915, now seen corresponding path program 1 times [2025-02-08 08:11:26,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:26,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249579061] [2025-02-08 08:11:26,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:26,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:26,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:11:26,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:11:26,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:26,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:26,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:26,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249579061] [2025-02-08 08:11:26,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249579061] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:26,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212433031] [2025-02-08 08:11:26,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:26,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:26,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:26,676 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) [2025-02-08 08:11:26,677 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 [2025-02-08 08:11:26,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:11:26,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:11:26,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:26,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:26,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 08:11:26,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:26,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:26,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212433031] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:26,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:26,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-08 08:11:26,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481016087] [2025-02-08 08:11:26,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:26,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 08:11:26,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:26,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 08:11:26,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-02-08 08:11:26,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:26,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 424 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:26,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:26,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:26,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:27,319 INFO L124 PetriNetUnfolderBase]: 589/1100 cut-off events. [2025-02-08 08:11:27,320 INFO L125 PetriNetUnfolderBase]: For 7230/7230 co-relation queries the response was YES. [2025-02-08 08:11:27,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4284 conditions, 1100 events. 589/1100 cut-off events. For 7230/7230 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4767 event pairs, 137 based on Foata normal form. 63/1159 useless extension candidates. Maximal degree in co-relation 4254. Up to 486 conditions per place. [2025-02-08 08:11:27,327 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 19 changer transitions 67/154 dead transitions. [2025-02-08 08:11:27,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 154 transitions, 1384 flow [2025-02-08 08:11:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 08:11:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-08 08:11:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2025-02-08 08:11:27,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2025-02-08 08:11:27,329 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 424 flow. Second operand 19 states and 288 transitions. [2025-02-08 08:11:27,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 154 transitions, 1384 flow [2025-02-08 08:11:27,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 154 transitions, 1305 flow, removed 32 selfloop flow, removed 5 redundant places. [2025-02-08 08:11:27,341 INFO L231 Difference]: Finished difference. Result has 89 places, 54 transitions, 560 flow [2025-02-08 08:11:27,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=560, PETRI_PLACES=89, PETRI_TRANSITIONS=54} [2025-02-08 08:11:27,342 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2025-02-08 08:11:27,342 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 54 transitions, 560 flow [2025-02-08 08:11:27,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:27,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:27,342 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:27,349 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 [2025-02-08 08:11:27,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:27,543 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:27,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:27,544 INFO L85 PathProgramCache]: Analyzing trace with hash -865156721, now seen corresponding path program 2 times [2025-02-08 08:11:27,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:27,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565197473] [2025-02-08 08:11:27,544 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:27,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:27,549 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:11:27,552 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:11:27,553 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:11:27,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:27,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:27,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565197473] [2025-02-08 08:11:27,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565197473] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:27,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:27,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 08:11:27,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606935029] [2025-02-08 08:11:27,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:27,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:11:27,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:27,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:11:27,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:11:27,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:27,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 54 transitions, 560 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2025-02-08 08:11:27,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:27,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:27,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:27,994 INFO L124 PetriNetUnfolderBase]: 670/1276 cut-off events. [2025-02-08 08:11:27,995 INFO L125 PetriNetUnfolderBase]: For 19712/19712 co-relation queries the response was YES. [2025-02-08 08:11:27,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6234 conditions, 1276 events. 670/1276 cut-off events. For 19712/19712 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6156 event pairs, 132 based on Foata normal form. 27/1299 useless extension candidates. Maximal degree in co-relation 6193. Up to 483 conditions per place. [2025-02-08 08:11:28,004 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 76 selfloop transitions, 25 changer transitions 31/136 dead transitions. [2025-02-08 08:11:28,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 136 transitions, 1552 flow [2025-02-08 08:11:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 08:11:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 08:11:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 232 transitions. [2025-02-08 08:11:28,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-02-08 08:11:28,006 INFO L175 Difference]: Start difference. First operand has 89 places, 54 transitions, 560 flow. Second operand 15 states and 232 transitions. [2025-02-08 08:11:28,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 136 transitions, 1552 flow [2025-02-08 08:11:28,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 136 transitions, 1251 flow, removed 138 selfloop flow, removed 12 redundant places. [2025-02-08 08:11:28,023 INFO L231 Difference]: Finished difference. Result has 91 places, 60 transitions, 624 flow [2025-02-08 08:11:28,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=624, PETRI_PLACES=91, PETRI_TRANSITIONS=60} [2025-02-08 08:11:28,023 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2025-02-08 08:11:28,023 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 60 transitions, 624 flow [2025-02-08 08:11:28,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2025-02-08 08:11:28,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:28,024 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:28,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 08:11:28,024 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:28,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:28,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2125096619, now seen corresponding path program 3 times [2025-02-08 08:11:28,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:28,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917707776] [2025-02-08 08:11:28,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:11:28,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:28,030 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-08 08:11:28,033 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:11:28,034 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:11:28,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:28,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:28,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917707776] [2025-02-08 08:11:28,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917707776] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:28,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437860026] [2025-02-08 08:11:28,121 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:11:28,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:28,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:28,126 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) [2025-02-08 08:11:28,127 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 [2025-02-08 08:11:28,172 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-08 08:11:28,185 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:11:28,185 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 08:11:28,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:28,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:11:28,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:28,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:28,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:28,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437860026] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:28,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:28,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-08 08:11:28,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675053879] [2025-02-08 08:11:28,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:28,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 08:11:28,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:28,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 08:11:28,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-02-08 08:11:28,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:28,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 60 transitions, 624 flow. Second operand has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 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) [2025-02-08 08:11:28,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:28,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:28,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:28,904 INFO L124 PetriNetUnfolderBase]: 973/1788 cut-off events. [2025-02-08 08:11:28,904 INFO L125 PetriNetUnfolderBase]: For 26627/26627 co-relation queries the response was YES. [2025-02-08 08:11:28,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8714 conditions, 1788 events. 973/1788 cut-off events. For 26627/26627 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9099 event pairs, 96 based on Foata normal form. 81/1865 useless extension candidates. Maximal degree in co-relation 8673. Up to 269 conditions per place. [2025-02-08 08:11:28,915 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 85 selfloop transitions, 54 changer transitions 81/224 dead transitions. [2025-02-08 08:11:28,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 224 transitions, 2567 flow [2025-02-08 08:11:28,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-08 08:11:28,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-08 08:11:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 388 transitions. [2025-02-08 08:11:28,917 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5351724137931034 [2025-02-08 08:11:28,917 INFO L175 Difference]: Start difference. First operand has 91 places, 60 transitions, 624 flow. Second operand 25 states and 388 transitions. [2025-02-08 08:11:28,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 224 transitions, 2567 flow [2025-02-08 08:11:28,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 224 transitions, 2347 flow, removed 94 selfloop flow, removed 8 redundant places. [2025-02-08 08:11:28,943 INFO L231 Difference]: Finished difference. Result has 120 places, 81 transitions, 1072 flow [2025-02-08 08:11:28,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1072, PETRI_PLACES=120, PETRI_TRANSITIONS=81} [2025-02-08 08:11:28,944 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2025-02-08 08:11:28,944 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 81 transitions, 1072 flow [2025-02-08 08:11:28,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 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) [2025-02-08 08:11:28,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:28,944 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:28,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 08:11:29,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:29,145 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:29,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:29,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2006801339, now seen corresponding path program 1 times [2025-02-08 08:11:29,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:29,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118248160] [2025-02-08 08:11:29,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:29,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:29,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 08:11:29,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 08:11:29,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:29,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:11:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:29,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118248160] [2025-02-08 08:11:29,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118248160] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:29,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414438109] [2025-02-08 08:11:29,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:29,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:29,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:29,286 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) [2025-02-08 08:11:29,287 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 [2025-02-08 08:11:29,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 08:11:29,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 08:11:29,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:29,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:29,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:11:29,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:11:29,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:11:29,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414438109] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:29,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:29,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-02-08 08:11:29,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653311858] [2025-02-08 08:11:29,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:29,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 08:11:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:29,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 08:11:29,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2025-02-08 08:11:29,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:29,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 81 transitions, 1072 flow. Second operand has 16 states, 16 states have (on average 10.375) internal successors, (166), 16 states have internal predecessors, (166), 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) [2025-02-08 08:11:29,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:29,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:29,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:30,163 INFO L124 PetriNetUnfolderBase]: 1369/2570 cut-off events. [2025-02-08 08:11:30,163 INFO L125 PetriNetUnfolderBase]: For 77683/77683 co-relation queries the response was YES. [2025-02-08 08:11:30,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15553 conditions, 2570 events. 1369/2570 cut-off events. For 77683/77683 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 14436 event pairs, 70 based on Foata normal form. 72/2638 useless extension candidates. Maximal degree in co-relation 15500. Up to 458 conditions per place. [2025-02-08 08:11:30,181 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 92 selfloop transitions, 84 changer transitions 88/268 dead transitions. [2025-02-08 08:11:30,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 268 transitions, 4200 flow [2025-02-08 08:11:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-08 08:11:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-02-08 08:11:30,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 425 transitions. [2025-02-08 08:11:30,185 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5233990147783252 [2025-02-08 08:11:30,185 INFO L175 Difference]: Start difference. First operand has 120 places, 81 transitions, 1072 flow. Second operand 28 states and 425 transitions. [2025-02-08 08:11:30,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 268 transitions, 4200 flow [2025-02-08 08:11:30,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 268 transitions, 3452 flow, removed 348 selfloop flow, removed 17 redundant places. [2025-02-08 08:11:30,273 INFO L231 Difference]: Finished difference. Result has 141 places, 117 transitions, 1798 flow [2025-02-08 08:11:30,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1798, PETRI_PLACES=141, PETRI_TRANSITIONS=117} [2025-02-08 08:11:30,275 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2025-02-08 08:11:30,275 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 117 transitions, 1798 flow [2025-02-08 08:11:30,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.375) internal successors, (166), 16 states have internal predecessors, (166), 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) [2025-02-08 08:11:30,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:30,275 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:30,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 08:11:30,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:30,476 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:30,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:30,477 INFO L85 PathProgramCache]: Analyzing trace with hash 788539270, now seen corresponding path program 2 times [2025-02-08 08:11:30,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:30,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567718041] [2025-02-08 08:11:30,478 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:30,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:30,482 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-08 08:11:30,488 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 08:11:30,490 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:11:30,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:30,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:30,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567718041] [2025-02-08 08:11:30,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567718041] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:30,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988296115] [2025-02-08 08:11:30,602 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:30,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:30,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:30,604 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) [2025-02-08 08:11:30,606 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 [2025-02-08 08:11:30,634 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-08 08:11:30,644 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 08:11:30,644 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:11:30,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:30,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 08:11:30,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:30,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:30,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988296115] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:30,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:30,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2025-02-08 08:11:30,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369354727] [2025-02-08 08:11:30,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:30,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:11:30,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:30,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:11:30,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2025-02-08 08:11:30,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:30,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 117 transitions, 1798 flow. Second operand has 19 states, 19 states have (on average 10.105263157894736) internal successors, (192), 19 states have internal predecessors, (192), 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) [2025-02-08 08:11:30,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:30,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:30,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:31,718 INFO L124 PetriNetUnfolderBase]: 1612/3060 cut-off events. [2025-02-08 08:11:31,718 INFO L125 PetriNetUnfolderBase]: For 147823/147823 co-relation queries the response was YES. [2025-02-08 08:11:31,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20790 conditions, 3060 events. 1612/3060 cut-off events. For 147823/147823 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 17319 event pairs, 92 based on Foata normal form. 54/3108 useless extension candidates. Maximal degree in co-relation 20727. Up to 584 conditions per place. [2025-02-08 08:11:31,740 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 92 selfloop transitions, 112 changer transitions 75/283 dead transitions. [2025-02-08 08:11:31,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 283 transitions, 5087 flow [2025-02-08 08:11:31,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 08:11:31,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-08 08:11:31,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 397 transitions. [2025-02-08 08:11:31,742 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5265251989389921 [2025-02-08 08:11:31,742 INFO L175 Difference]: Start difference. First operand has 141 places, 117 transitions, 1798 flow. Second operand 26 states and 397 transitions. [2025-02-08 08:11:31,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 283 transitions, 5087 flow [2025-02-08 08:11:31,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 283 transitions, 3933 flow, removed 540 selfloop flow, removed 16 redundant places. [2025-02-08 08:11:31,884 INFO L231 Difference]: Finished difference. Result has 156 places, 141 transitions, 2183 flow [2025-02-08 08:11:31,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2183, PETRI_PLACES=156, PETRI_TRANSITIONS=141} [2025-02-08 08:11:31,885 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2025-02-08 08:11:31,885 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 141 transitions, 2183 flow [2025-02-08 08:11:31,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.105263157894736) internal successors, (192), 19 states have internal predecessors, (192), 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) [2025-02-08 08:11:31,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:31,885 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:31,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 08:11:32,085 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,SelfDestructingSolverStorable10 [2025-02-08 08:11:32,086 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:32,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:32,086 INFO L85 PathProgramCache]: Analyzing trace with hash -962442157, now seen corresponding path program 3 times [2025-02-08 08:11:32,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:32,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741556431] [2025-02-08 08:11:32,086 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:11:32,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:32,093 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 5 equivalence classes. [2025-02-08 08:11:32,105 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 08:11:32,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-08 08:11:32,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:32,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741556431] [2025-02-08 08:11:32,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741556431] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:11:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021154857] [2025-02-08 08:11:32,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:11:32,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:32,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:32,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:32,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:11:32,275 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 5 equivalence classes. [2025-02-08 08:11:32,287 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 08:11:32,287 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-08 08:11:32,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:32,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 08:11:32,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:32,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:32,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021154857] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:32,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:11:32,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2025-02-08 08:11:32,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828550630] [2025-02-08 08:11:32,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:32,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 08:11:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:32,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 08:11:32,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2025-02-08 08:11:32,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:32,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 141 transitions, 2183 flow. Second operand has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 21 states have internal predecessors, (213), 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) [2025-02-08 08:11:32,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:32,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:32,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:33,461 INFO L124 PetriNetUnfolderBase]: 1936/3620 cut-off events. [2025-02-08 08:11:33,461 INFO L125 PetriNetUnfolderBase]: For 169838/169838 co-relation queries the response was YES. [2025-02-08 08:11:33,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24587 conditions, 3620 events. 1936/3620 cut-off events. For 169838/169838 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20366 event pairs, 50 based on Foata normal form. 54/3670 useless extension candidates. Maximal degree in co-relation 24518. Up to 689 conditions per place. [2025-02-08 08:11:33,508 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 118 selfloop transitions, 138 changer transitions 91/351 dead transitions. [2025-02-08 08:11:33,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 351 transitions, 6108 flow [2025-02-08 08:11:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-08 08:11:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-08 08:11:33,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 519 transitions. [2025-02-08 08:11:33,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.526369168356998 [2025-02-08 08:11:33,513 INFO L175 Difference]: Start difference. First operand has 156 places, 141 transitions, 2183 flow. Second operand 34 states and 519 transitions. [2025-02-08 08:11:33,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 351 transitions, 6108 flow [2025-02-08 08:11:33,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 351 transitions, 5170 flow, removed 422 selfloop flow, removed 17 redundant places. [2025-02-08 08:11:33,918 INFO L231 Difference]: Finished difference. Result has 182 places, 165 transitions, 2765 flow [2025-02-08 08:11:33,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2765, PETRI_PLACES=182, PETRI_TRANSITIONS=165} [2025-02-08 08:11:33,918 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2025-02-08 08:11:33,918 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 165 transitions, 2765 flow [2025-02-08 08:11:33,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 21 states have internal predecessors, (213), 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) [2025-02-08 08:11:33,918 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:33,919 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:33,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 08:11:34,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 08:11:34,119 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:34,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:34,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2133203642, now seen corresponding path program 4 times [2025-02-08 08:11:34,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:34,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932773907] [2025-02-08 08:11:34,121 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:11:34,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:34,128 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-02-08 08:11:34,138 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-02-08 08:11:34,138 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:11:34,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:11:34,138 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:11:34,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-08 08:11:34,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-08 08:11:34,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:34,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:11:34,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 08:11:34,173 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:11:34,174 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-02-08 08:11:34,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-02-08 08:11:34,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-02-08 08:11:34,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-02-08 08:11:34,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 08:11:34,176 INFO L422 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1] [2025-02-08 08:11:34,237 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:11:34,238 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:11:34,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:11:34 BasicIcfg [2025-02-08 08:11:34,242 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:11:34,242 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:11:34,243 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:11:34,243 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:11:34,244 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:24" (3/4) ... [2025-02-08 08:11:34,245 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:11:34,246 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:11:34,246 INFO L158 Benchmark]: Toolchain (without parser) took 10696.23ms. Allocated memory was 142.6MB in the beginning and 394.3MB in the end (delta: 251.7MB). Free memory was 103.7MB in the beginning and 168.7MB in the end (delta: -65.1MB). Peak memory consumption was 186.5MB. Max. memory is 16.1GB. [2025-02-08 08:11:34,246 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:34,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.61ms. Allocated memory is still 142.6MB. Free memory was 103.7MB in the beginning and 85.0MB in the end (delta: 18.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:11:34,247 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.43ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 82.7MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:11:34,247 INFO L158 Benchmark]: Boogie Preprocessor took 34.55ms. Allocated memory is still 142.6MB. Free memory was 82.7MB in the beginning and 81.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:34,247 INFO L158 Benchmark]: IcfgBuilder took 356.15ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 63.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:11:34,248 INFO L158 Benchmark]: TraceAbstraction took 9908.90ms. Allocated memory was 142.6MB in the beginning and 394.3MB in the end (delta: 251.7MB). Free memory was 62.7MB in the beginning and 168.8MB in the end (delta: -106.1MB). Peak memory consumption was 144.5MB. Max. memory is 16.1GB. [2025-02-08 08:11:34,248 INFO L158 Benchmark]: Witness Printer took 3.71ms. Allocated memory is still 394.3MB. Free memory was 168.8MB in the beginning and 168.7MB in the end (delta: 92.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:34,249 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.61ms. Allocated memory is still 142.6MB. Free memory was 103.7MB in the beginning and 85.0MB in the end (delta: 18.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.43ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 82.7MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.55ms. Allocated memory is still 142.6MB. Free memory was 82.7MB in the beginning and 81.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 356.15ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 63.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9908.90ms. Allocated memory was 142.6MB in the beginning and 394.3MB in the end (delta: 251.7MB). Free memory was 62.7MB in the beginning and 168.8MB in the end (delta: -106.1MB). Peak memory consumption was 144.5MB. Max. memory is 16.1GB. * Witness Printer took 3.71ms. Allocated memory is still 394.3MB. Free memory was 168.8MB in the beginning and 168.7MB in the end (delta: 92.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, argc=49, i=3, id1=-2, j=6] [L696] 1 int k = 0; VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, argc=49, i=3, id1=-2, id2=-1, j=6, k=0] [L704] 2 int k = 0; VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L716] 0 int condI = i >= (2*5 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, arg={0:0}, argc=49, condI=0, i=7, id1=-2, id2=-1, j=8, k=1, k=1] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L719] 0 int condJ = j >= (2*5 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, arg={0:0}, argc=49, condI=0, condJ=1, i=15, id1=-2, id2=-1, j=16, k=4, k=4] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L693] 0 __assert_fail ("0", "triangular-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.8s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1762 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1758 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3084 IncrementalHoareTripleChecker+Invalid, 3214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 130 mSolverCounterUnsat, 1 mSDtfsCounter, 3084 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 452 GetRequests, 213 SyntacticMatches, 4 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2765occurred in iteration=12, InterpolantAutomatonStates: 193, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 387 NumberOfCodeBlocks, 387 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 450 ConstructedInterpolants, 0 QuantifiedInterpolants, 1676 SizeOfPredicates, 29 NumberOfNonLiveVariables, 505 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 3/132 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-08 08:11:34,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/triangular-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:11:36,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:11:36,498 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 08:11:36,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:11:36,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:11:36,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:11:36,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:11:36,522 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:11:36,523 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:11:36,523 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:11:36,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:11:36,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:11:36,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:11:36,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:11:36,523 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:11:36,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:11:36,524 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:11:36,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:11:36,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:11:36,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:11:36,524 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:11:36,524 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:11:36,524 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:11:36,524 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:11:36,524 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:11:36,524 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 08:11:36,524 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 08:11:36,525 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:11:36,525 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:11:36,525 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:11:36,525 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:11:36,525 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:11:36,525 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:11:36,525 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:11:36,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:11:36,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:36,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:11:36,526 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:11:36,526 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 08:11:36,526 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 08:11:36,526 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:11:36,526 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:11:36,526 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:11:36,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:11:36,526 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 -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2025-02-08 08:11:36,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:11:36,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:11:36,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:11:36,820 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:11:36,820 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:11:36,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-2.i [2025-02-08 08:11:38,045 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/86bc08e50/62d7810dad874653a9fd946ffb94b7cc/FLAG1ddd1e8bd [2025-02-08 08:11:38,326 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:11:38,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-2.i [2025-02-08 08:11:38,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/86bc08e50/62d7810dad874653a9fd946ffb94b7cc/FLAG1ddd1e8bd [2025-02-08 08:11:38,350 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/86bc08e50/62d7810dad874653a9fd946ffb94b7cc [2025-02-08 08:11:38,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:11:38,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:11:38,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:38,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:11:38,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:11:38,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c973275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38, skipping insertion in model container [2025-02-08 08:11:38,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:11:38,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:38,663 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:11:38,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:38,737 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:11:38,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38 WrapperNode [2025-02-08 08:11:38,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:38,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:38,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:11:38,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:11:38,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,767 INFO L138 Inliner]: procedures = 169, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2025-02-08 08:11:38,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:38,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:11:38,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:11:38,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:11:38,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,777 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,785 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]. [2025-02-08 08:11:38,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,791 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:11:38,799 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:11:38,800 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:11:38,800 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:11:38,800 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (1/1) ... [2025-02-08 08:11:38,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:38,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:38,834 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) [2025-02-08 08:11:38,838 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 [2025-02-08 08:11:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-08 08:11:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-08 08:11:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-08 08:11:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-08 08:11:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:11:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:11:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 08:11:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:11:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:11:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:11:38,858 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:11:38,964 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:11:38,966 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:11:39,108 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:11:39,108 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:11:39,203 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:11:39,203 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:11:39,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:39 BoogieIcfgContainer [2025-02-08 08:11:39,203 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:11:39,206 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:11:39,206 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:11:39,211 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:11:39,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:11:38" (1/3) ... [2025-02-08 08:11:39,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1045a556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:39, skipping insertion in model container [2025-02-08 08:11:39,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:38" (2/3) ... [2025-02-08 08:11:39,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1045a556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:39, skipping insertion in model container [2025-02-08 08:11:39,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:39" (3/3) ... [2025-02-08 08:11:39,214 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2025-02-08 08:11:39,228 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:11:39,229 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-2.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-08 08:11:39,229 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:11:39,258 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 08:11:39,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2025-02-08 08:11:39,295 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-02-08 08:11:39,296 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:11:39,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-08 08:11:39,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2025-02-08 08:11:39,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2025-02-08 08:11:39,305 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:11:39,313 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;@72111213, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:11:39,313 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 08:11:39,319 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:11:39,319 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-02-08 08:11:39,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:11:39,319 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:39,320 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:39,320 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:39,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1792361786, now seen corresponding path program 1 times [2025-02-08 08:11:39,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:39,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926545928] [2025-02-08 08:11:39,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:39,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:39,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:39,333 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) [2025-02-08 08:11:39,335 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 [2025-02-08 08:11:39,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:11:39,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:11:39,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:39,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:39,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 08:11:39,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:39,428 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:39,429 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:39,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926545928] [2025-02-08 08:11:39,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926545928] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:39,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:39,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:11:39,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144732200] [2025-02-08 08:11:39,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:39,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:11:39,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:39,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:11:39,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:11:39,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:39,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2025-02-08 08:11:39,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:39,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:39,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:39,535 INFO L124 PetriNetUnfolderBase]: 185/359 cut-off events. [2025-02-08 08:11:39,536 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:11:39,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 359 events. 185/359 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1574 event pairs, 135 based on Foata normal form. 32/386 useless extension candidates. Maximal degree in co-relation 653. Up to 290 conditions per place. [2025-02-08 08:11:39,539 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 15 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2025-02-08 08:11:39,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 86 flow [2025-02-08 08:11:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:11:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:11:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-02-08 08:11:39,547 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-02-08 08:11:39,548 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 44 transitions. [2025-02-08 08:11:39,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 86 flow [2025-02-08 08:11:39,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:11:39,552 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2025-02-08 08:11:39,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2025-02-08 08:11:39,556 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2025-02-08 08:11:39,556 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2025-02-08 08:11:39,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2025-02-08 08:11:39,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:39,556 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:39,564 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 [2025-02-08 08:11:39,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:39,758 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:39,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:39,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1792361335, now seen corresponding path program 1 times [2025-02-08 08:11:39,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:39,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129000174] [2025-02-08 08:11:39,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:39,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:39,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:39,761 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) [2025-02-08 08:11:39,762 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 [2025-02-08 08:11:39,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:11:39,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:11:39,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:39,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:39,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:11:39,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:39,868 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:39,868 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:39,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129000174] [2025-02-08 08:11:39,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129000174] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:39,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:39,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:11:39,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147172673] [2025-02-08 08:11:39,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:39,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:11:39,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:39,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:11:39,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:11:39,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:39,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:39,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:39,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:39,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:40,039 INFO L124 PetriNetUnfolderBase]: 328/593 cut-off events. [2025-02-08 08:11:40,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:11:40,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 593 events. 328/593 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2607 event pairs, 45 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 1120. Up to 243 conditions per place. [2025-02-08 08:11:40,042 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 7 changer transitions 29/69 dead transitions. [2025-02-08 08:11:40,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 69 transitions, 274 flow [2025-02-08 08:11:40,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:11:40,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:11:40,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2025-02-08 08:11:40,044 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5646551724137931 [2025-02-08 08:11:40,044 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 8 states and 131 transitions. [2025-02-08 08:11:40,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 69 transitions, 274 flow [2025-02-08 08:11:40,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 69 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:11:40,046 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 100 flow [2025-02-08 08:11:40,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2025-02-08 08:11:40,046 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2025-02-08 08:11:40,046 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 100 flow [2025-02-08 08:11:40,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:40,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:40,047 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:40,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 08:11:40,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:40,251 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:40,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:40,252 INFO L85 PathProgramCache]: Analyzing trace with hash 123035499, now seen corresponding path program 1 times [2025-02-08 08:11:40,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:40,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278273934] [2025-02-08 08:11:40,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:40,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:40,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:40,254 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) [2025-02-08 08:11:40,255 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 [2025-02-08 08:11:40,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:11:40,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:11:40,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:40,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:40,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:11:40,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:40,409 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:40,410 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:40,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278273934] [2025-02-08 08:11:40,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278273934] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:40,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:40,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:11:40,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806091364] [2025-02-08 08:11:40,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:40,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:11:40,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:40,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:11:40,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:11:40,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:40,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2025-02-08 08:11:40,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:40,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:40,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:40,582 INFO L124 PetriNetUnfolderBase]: 247/454 cut-off events. [2025-02-08 08:11:40,582 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2025-02-08 08:11:40,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 454 events. 247/454 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1820 event pairs, 50 based on Foata normal form. 18/468 useless extension candidates. Maximal degree in co-relation 1170. Up to 190 conditions per place. [2025-02-08 08:11:40,585 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 30 selfloop transitions, 9 changer transitions 16/59 dead transitions. [2025-02-08 08:11:40,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 316 flow [2025-02-08 08:11:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 08:11:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 08:11:40,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2025-02-08 08:11:40,586 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.541871921182266 [2025-02-08 08:11:40,586 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 100 flow. Second operand 7 states and 110 transitions. [2025-02-08 08:11:40,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 316 flow [2025-02-08 08:11:40,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 312 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-08 08:11:40,589 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 143 flow [2025-02-08 08:11:40,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2025-02-08 08:11:40,589 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2025-02-08 08:11:40,590 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 143 flow [2025-02-08 08:11:40,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2025-02-08 08:11:40,590 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:40,590 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:40,596 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 [2025-02-08 08:11:40,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:40,793 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:40,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1292581058, now seen corresponding path program 1 times [2025-02-08 08:11:40,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:40,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322634137] [2025-02-08 08:11:40,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:40,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:40,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:40,796 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) [2025-02-08 08:11:40,798 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 [2025-02-08 08:11:40,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:11:40,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:11:40,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:40,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:40,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:11:40,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:40,882 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:40,882 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:40,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322634137] [2025-02-08 08:11:40,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322634137] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:40,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:40,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:11:40,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278190917] [2025-02-08 08:11:40,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:40,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:11:40,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:40,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:11:40,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:11:40,885 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:40,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2025-02-08 08:11:40,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:40,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:40,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:41,059 INFO L124 PetriNetUnfolderBase]: 391/725 cut-off events. [2025-02-08 08:11:41,059 INFO L125 PetriNetUnfolderBase]: For 1146/1146 co-relation queries the response was YES. [2025-02-08 08:11:41,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2115 conditions, 725 events. 391/725 cut-off events. For 1146/1146 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3203 event pairs, 95 based on Foata normal form. 27/748 useless extension candidates. Maximal degree in co-relation 2098. Up to 264 conditions per place. [2025-02-08 08:11:41,063 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 47 selfloop transitions, 11 changer transitions 20/82 dead transitions. [2025-02-08 08:11:41,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 82 transitions, 517 flow [2025-02-08 08:11:41,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:11:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 08:11:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-02-08 08:11:41,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-02-08 08:11:41,070 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 143 flow. Second operand 9 states and 144 transitions. [2025-02-08 08:11:41,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 82 transitions, 517 flow [2025-02-08 08:11:41,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 478 flow, removed 17 selfloop flow, removed 3 redundant places. [2025-02-08 08:11:41,077 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 236 flow [2025-02-08 08:11:41,077 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2025-02-08 08:11:41,077 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2025-02-08 08:11:41,077 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 236 flow [2025-02-08 08:11:41,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2025-02-08 08:11:41,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:41,077 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:41,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 08:11:41,278 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 [2025-02-08 08:11:41,279 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:41,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:41,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1409592770, now seen corresponding path program 2 times [2025-02-08 08:11:41,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:41,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305258199] [2025-02-08 08:11:41,281 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:41,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:41,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:41,283 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:41,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:11:41,323 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:11:41,329 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:11:41,329 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:11:41,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:41,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:11:41,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:41,374 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:41,374 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:41,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305258199] [2025-02-08 08:11:41,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305258199] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:41,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:41,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:11:41,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725269] [2025-02-08 08:11:41,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:41,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:11:41,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:41,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:11:41,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:11:41,377 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:41,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2025-02-08 08:11:41,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:41,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:41,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:41,589 INFO L124 PetriNetUnfolderBase]: 346/655 cut-off events. [2025-02-08 08:11:41,589 INFO L125 PetriNetUnfolderBase]: For 2058/2058 co-relation queries the response was YES. [2025-02-08 08:11:41,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 655 events. 346/655 cut-off events. For 2058/2058 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2875 event pairs, 88 based on Foata normal form. 45/696 useless extension candidates. Maximal degree in co-relation 2166. Up to 273 conditions per place. [2025-02-08 08:11:41,592 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 40 selfloop transitions, 12 changer transitions 30/86 dead transitions. [2025-02-08 08:11:41,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 655 flow [2025-02-08 08:11:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:11:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 08:11:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-02-08 08:11:41,594 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2025-02-08 08:11:41,594 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 236 flow. Second operand 9 states and 140 transitions. [2025-02-08 08:11:41,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 655 flow [2025-02-08 08:11:41,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 595 flow, removed 30 selfloop flow, removed 2 redundant places. [2025-02-08 08:11:41,600 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 278 flow [2025-02-08 08:11:41,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=278, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2025-02-08 08:11:41,601 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2025-02-08 08:11:41,601 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 278 flow [2025-02-08 08:11:41,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2025-02-08 08:11:41,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:41,601 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:41,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 08:11:41,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:41,802 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:41,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:41,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1069631228, now seen corresponding path program 1 times [2025-02-08 08:11:41,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:41,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003080410] [2025-02-08 08:11:41,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:41,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:41,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:41,804 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:41,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 08:11:41,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:11:41,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:11:41,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:41,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:41,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:11:41,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:41,896 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:41,896 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:41,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003080410] [2025-02-08 08:11:41,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003080410] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:41,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:41,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:11:41,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570755099] [2025-02-08 08:11:41,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:41,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:11:41,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:41,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:11:41,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:11:41,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:41,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-02-08 08:11:41,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:41,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:41,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:42,115 INFO L124 PetriNetUnfolderBase]: 427/806 cut-off events. [2025-02-08 08:11:42,116 INFO L125 PetriNetUnfolderBase]: For 3492/3492 co-relation queries the response was YES. [2025-02-08 08:11:42,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2902 conditions, 806 events. 427/806 cut-off events. For 3492/3492 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3713 event pairs, 122 based on Foata normal form. 27/829 useless extension candidates. Maximal degree in co-relation 2874. Up to 316 conditions per place. [2025-02-08 08:11:42,143 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 51 selfloop transitions, 12 changer transitions 26/93 dead transitions. [2025-02-08 08:11:42,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 93 transitions, 752 flow [2025-02-08 08:11:42,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:11:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 08:11:42,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2025-02-08 08:11:42,144 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2025-02-08 08:11:42,144 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 278 flow. Second operand 10 states and 158 transitions. [2025-02-08 08:11:42,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 93 transitions, 752 flow [2025-02-08 08:11:42,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 93 transitions, 718 flow, removed 11 selfloop flow, removed 4 redundant places. [2025-02-08 08:11:42,150 INFO L231 Difference]: Finished difference. Result has 68 places, 43 transitions, 345 flow [2025-02-08 08:11:42,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=345, PETRI_PLACES=68, PETRI_TRANSITIONS=43} [2025-02-08 08:11:42,151 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2025-02-08 08:11:42,151 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 43 transitions, 345 flow [2025-02-08 08:11:42,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-02-08 08:11:42,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:42,151 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:42,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-08 08:11:42,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:42,352 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:42,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1761094232, now seen corresponding path program 2 times [2025-02-08 08:11:42,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:42,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664410976] [2025-02-08 08:11:42,352 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:42,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:42,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:42,354 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:42,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 08:11:42,386 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:11:42,391 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:11:42,391 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:11:42,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:42,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:11:42,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:42,440 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:42,440 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:42,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664410976] [2025-02-08 08:11:42,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664410976] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:42,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:42,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:11:42,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720305040] [2025-02-08 08:11:42,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:42,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:11:42,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:42,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:11:42,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:11:42,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:42,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 43 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-02-08 08:11:42,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:42,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:42,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:42,679 INFO L124 PetriNetUnfolderBase]: 463/891 cut-off events. [2025-02-08 08:11:42,679 INFO L125 PetriNetUnfolderBase]: For 6473/6473 co-relation queries the response was YES. [2025-02-08 08:11:42,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3609 conditions, 891 events. 463/891 cut-off events. For 6473/6473 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4355 event pairs, 120 based on Foata normal form. 27/914 useless extension candidates. Maximal degree in co-relation 3577. Up to 340 conditions per place. [2025-02-08 08:11:42,683 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 56 selfloop transitions, 17 changer transitions 30/107 dead transitions. [2025-02-08 08:11:42,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 978 flow [2025-02-08 08:11:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 08:11:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 08:11:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2025-02-08 08:11:42,684 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-02-08 08:11:42,684 INFO L175 Difference]: Start difference. First operand has 68 places, 43 transitions, 345 flow. Second operand 12 states and 186 transitions. [2025-02-08 08:11:42,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 978 flow [2025-02-08 08:11:42,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 842 flow, removed 59 selfloop flow, removed 7 redundant places. [2025-02-08 08:11:42,691 INFO L231 Difference]: Finished difference. Result has 75 places, 48 transitions, 395 flow [2025-02-08 08:11:42,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=395, PETRI_PLACES=75, PETRI_TRANSITIONS=48} [2025-02-08 08:11:42,692 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2025-02-08 08:11:42,692 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 48 transitions, 395 flow [2025-02-08 08:11:42,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-02-08 08:11:42,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:42,692 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:42,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 08:11:42,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:42,893 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:42,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:42,893 INFO L85 PathProgramCache]: Analyzing trace with hash 810027100, now seen corresponding path program 3 times [2025-02-08 08:11:42,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:42,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626790832] [2025-02-08 08:11:42,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:11:42,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:42,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:42,896 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:42,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 08:11:42,930 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:11:42,936 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:11:42,936 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 08:11:42,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:42,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:11:42,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:43,022 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:43,022 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:43,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626790832] [2025-02-08 08:11:43,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626790832] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:43,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:43,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:11:43,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216175181] [2025-02-08 08:11:43,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:43,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:11:43,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:43,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:11:43,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:11:43,025 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:43,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 48 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-02-08 08:11:43,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:43,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:43,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:43,260 INFO L124 PetriNetUnfolderBase]: 436/839 cut-off events. [2025-02-08 08:11:43,260 INFO L125 PetriNetUnfolderBase]: For 6137/6137 co-relation queries the response was YES. [2025-02-08 08:11:43,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3329 conditions, 839 events. 436/839 cut-off events. For 6137/6137 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4066 event pairs, 152 based on Foata normal form. 27/862 useless extension candidates. Maximal degree in co-relation 3295. Up to 555 conditions per place. [2025-02-08 08:11:43,264 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 9 changer transitions 29/96 dead transitions. [2025-02-08 08:11:43,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 875 flow [2025-02-08 08:11:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:11:43,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 08:11:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2025-02-08 08:11:43,265 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5275862068965518 [2025-02-08 08:11:43,265 INFO L175 Difference]: Start difference. First operand has 75 places, 48 transitions, 395 flow. Second operand 10 states and 153 transitions. [2025-02-08 08:11:43,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 875 flow [2025-02-08 08:11:43,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 804 flow, removed 25 selfloop flow, removed 7 redundant places. [2025-02-08 08:11:43,274 INFO L231 Difference]: Finished difference. Result has 79 places, 50 transitions, 405 flow [2025-02-08 08:11:43,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=405, PETRI_PLACES=79, PETRI_TRANSITIONS=50} [2025-02-08 08:11:43,275 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2025-02-08 08:11:43,275 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 50 transitions, 405 flow [2025-02-08 08:11:43,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-02-08 08:11:43,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:43,275 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:43,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 08:11:43,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:43,475 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:43,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:43,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1508505852, now seen corresponding path program 4 times [2025-02-08 08:11:43,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:43,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277085327] [2025-02-08 08:11:43,476 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:11:43,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:43,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:43,479 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:43,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 08:11:43,510 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-08 08:11:43,517 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:11:43,517 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:11:43,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:43,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:11:43,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:43,571 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:43,571 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:43,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277085327] [2025-02-08 08:11:43,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277085327] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:43,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:43,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 08:11:43,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164972257] [2025-02-08 08:11:43,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:43,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:11:43,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:43,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:11:43,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:11:43,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:43,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 50 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-02-08 08:11:43,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:43,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:43,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:43,811 INFO L124 PetriNetUnfolderBase]: 463/887 cut-off events. [2025-02-08 08:11:43,811 INFO L125 PetriNetUnfolderBase]: For 6613/6613 co-relation queries the response was YES. [2025-02-08 08:11:43,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 887 events. 463/887 cut-off events. For 6613/6613 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4344 event pairs, 152 based on Foata normal form. 18/901 useless extension candidates. Maximal degree in co-relation 3472. Up to 456 conditions per place. [2025-02-08 08:11:43,821 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 16 changer transitions 21/95 dead transitions. [2025-02-08 08:11:43,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 883 flow [2025-02-08 08:11:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 08:11:43,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 08:11:43,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-02-08 08:11:43,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2025-02-08 08:11:43,822 INFO L175 Difference]: Start difference. First operand has 79 places, 50 transitions, 405 flow. Second operand 9 states and 140 transitions. [2025-02-08 08:11:43,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 883 flow [2025-02-08 08:11:43,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 95 transitions, 827 flow, removed 21 selfloop flow, removed 7 redundant places. [2025-02-08 08:11:43,844 INFO L231 Difference]: Finished difference. Result has 81 places, 53 transitions, 468 flow [2025-02-08 08:11:43,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=468, PETRI_PLACES=81, PETRI_TRANSITIONS=53} [2025-02-08 08:11:43,844 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2025-02-08 08:11:43,844 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 53 transitions, 468 flow [2025-02-08 08:11:43,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2025-02-08 08:11:43,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:43,845 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:43,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 08:11:44,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:44,045 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:44,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:44,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1029340574, now seen corresponding path program 1 times [2025-02-08 08:11:44,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:44,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577133992] [2025-02-08 08:11:44,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:44,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:44,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:44,052 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:44,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 08:11:44,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:11:44,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:11:44,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:44,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:44,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:11:44,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:44,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:44,308 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:44,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577133992] [2025-02-08 08:11:44,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577133992] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:44,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:11:44,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2025-02-08 08:11:44,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024508105] [2025-02-08 08:11:44,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:44,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 08:11:44,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:44,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 08:11:44,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-02-08 08:11:44,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:44,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 53 transitions, 468 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2025-02-08 08:11:44,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:44,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:44,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:44,967 INFO L124 PetriNetUnfolderBase]: 697/1284 cut-off events. [2025-02-08 08:11:44,967 INFO L125 PetriNetUnfolderBase]: For 14498/14498 co-relation queries the response was YES. [2025-02-08 08:11:44,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5775 conditions, 1284 events. 697/1284 cut-off events. For 14498/14498 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6064 event pairs, 36 based on Foata normal form. 45/1325 useless extension candidates. Maximal degree in co-relation 5738. Up to 191 conditions per place. [2025-02-08 08:11:44,974 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 69 selfloop transitions, 43 changer transitions 60/176 dead transitions. [2025-02-08 08:11:44,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 176 transitions, 1752 flow [2025-02-08 08:11:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 08:11:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 08:11:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 323 transitions. [2025-02-08 08:11:44,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5303776683087028 [2025-02-08 08:11:44,976 INFO L175 Difference]: Start difference. First operand has 81 places, 53 transitions, 468 flow. Second operand 21 states and 323 transitions. [2025-02-08 08:11:44,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 176 transitions, 1752 flow [2025-02-08 08:11:44,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 176 transitions, 1659 flow, removed 36 selfloop flow, removed 6 redundant places. [2025-02-08 08:11:44,992 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 885 flow [2025-02-08 08:11:44,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=885, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2025-02-08 08:11:44,992 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2025-02-08 08:11:44,992 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 885 flow [2025-02-08 08:11:44,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 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) [2025-02-08 08:11:44,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:44,993 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:45,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 08:11:45,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:45,193 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:45,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:45,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1628576787, now seen corresponding path program 1 times [2025-02-08 08:11:45,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:45,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665668503] [2025-02-08 08:11:45,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:45,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:45,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:45,200 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:45,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 08:11:45,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:11:45,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:11:45,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:45,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:45,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:11:45,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:45,315 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:45,315 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:45,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665668503] [2025-02-08 08:11:45,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665668503] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:45,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:45,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 08:11:45,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069432697] [2025-02-08 08:11:45,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:45,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:11:45,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:45,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:11:45,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:11:45,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:45,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 885 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2025-02-08 08:11:45,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:45,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:45,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:45,607 INFO L124 PetriNetUnfolderBase]: 679/1283 cut-off events. [2025-02-08 08:11:45,607 INFO L125 PetriNetUnfolderBase]: For 18449/18449 co-relation queries the response was YES. [2025-02-08 08:11:45,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6064 conditions, 1283 events. 679/1283 cut-off events. For 18449/18449 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6458 event pairs, 239 based on Foata normal form. 27/1306 useless extension candidates. Maximal degree in co-relation 6019. Up to 828 conditions per place. [2025-02-08 08:11:45,615 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 73 selfloop transitions, 15 changer transitions 31/123 dead transitions. [2025-02-08 08:11:45,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 123 transitions, 1563 flow [2025-02-08 08:11:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:11:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 08:11:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-02-08 08:11:45,616 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-02-08 08:11:45,616 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 885 flow. Second operand 11 states and 168 transitions. [2025-02-08 08:11:45,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 123 transitions, 1563 flow [2025-02-08 08:11:45,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 1129 flow, removed 198 selfloop flow, removed 14 redundant places. [2025-02-08 08:11:45,645 INFO L231 Difference]: Finished difference. Result has 99 places, 71 transitions, 650 flow [2025-02-08 08:11:45,645 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=650, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2025-02-08 08:11:45,645 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2025-02-08 08:11:45,645 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 650 flow [2025-02-08 08:11:45,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2025-02-08 08:11:45,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:45,645 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:45,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 08:11:45,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:45,846 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:45,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:45,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2024791207, now seen corresponding path program 2 times [2025-02-08 08:11:45,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:45,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68396751] [2025-02-08 08:11:45,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:45,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:45,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:45,848 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:45,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 08:11:45,893 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:11:45,900 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:11:45,900 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:11:45,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:45,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:11:45,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:45,959 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:45,959 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:45,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68396751] [2025-02-08 08:11:45,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68396751] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:45,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:45,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 08:11:45,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316334981] [2025-02-08 08:11:45,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:45,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:11:45,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:45,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:11:45,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:11:45,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:45,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 650 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2025-02-08 08:11:45,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:45,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:45,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:46,282 INFO L124 PetriNetUnfolderBase]: 877/1664 cut-off events. [2025-02-08 08:11:46,282 INFO L125 PetriNetUnfolderBase]: For 18541/18541 co-relation queries the response was YES. [2025-02-08 08:11:46,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7162 conditions, 1664 events. 877/1664 cut-off events. For 18541/18541 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9044 event pairs, 224 based on Foata normal form. 27/1687 useless extension candidates. Maximal degree in co-relation 7120. Up to 780 conditions per place. [2025-02-08 08:11:46,317 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 94 selfloop transitions, 22 changer transitions 27/147 dead transitions. [2025-02-08 08:11:46,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 147 transitions, 1586 flow [2025-02-08 08:11:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 08:11:46,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 08:11:46,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 206 transitions. [2025-02-08 08:11:46,319 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5464190981432361 [2025-02-08 08:11:46,319 INFO L175 Difference]: Start difference. First operand has 99 places, 71 transitions, 650 flow. Second operand 13 states and 206 transitions. [2025-02-08 08:11:46,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 147 transitions, 1586 flow [2025-02-08 08:11:46,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 1465 flow, removed 48 selfloop flow, removed 8 redundant places. [2025-02-08 08:11:46,336 INFO L231 Difference]: Finished difference. Result has 107 places, 77 transitions, 774 flow [2025-02-08 08:11:46,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=774, PETRI_PLACES=107, PETRI_TRANSITIONS=77} [2025-02-08 08:11:46,336 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2025-02-08 08:11:46,336 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 77 transitions, 774 flow [2025-02-08 08:11:46,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2025-02-08 08:11:46,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:46,336 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:46,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 08:11:46,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:46,537 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:46,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:46,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1821363433, now seen corresponding path program 3 times [2025-02-08 08:11:46,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:46,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548829520] [2025-02-08 08:11:46,538 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:11:46,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:46,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:46,542 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:46,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 08:11:46,582 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:11:46,588 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:11:46,588 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 08:11:46,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:46,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:11:46,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:46,647 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:46,647 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:46,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548829520] [2025-02-08 08:11:46,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548829520] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:46,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:46,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 08:11:46,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909967283] [2025-02-08 08:11:46,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:46,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:11:46,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:46,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:11:46,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:11:46,651 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:46,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 77 transitions, 774 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2025-02-08 08:11:46,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:46,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:46,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:46,953 INFO L124 PetriNetUnfolderBase]: 832/1602 cut-off events. [2025-02-08 08:11:46,953 INFO L125 PetriNetUnfolderBase]: For 22340/22340 co-relation queries the response was YES. [2025-02-08 08:11:46,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7224 conditions, 1602 events. 832/1602 cut-off events. For 22340/22340 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8724 event pairs, 258 based on Foata normal form. 45/1643 useless extension candidates. Maximal degree in co-relation 7178. Up to 789 conditions per place. [2025-02-08 08:11:46,960 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 83 selfloop transitions, 22 changer transitions 31/140 dead transitions. [2025-02-08 08:11:46,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 140 transitions, 1665 flow [2025-02-08 08:11:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:11:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 08:11:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2025-02-08 08:11:46,961 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2025-02-08 08:11:46,961 INFO L175 Difference]: Start difference. First operand has 107 places, 77 transitions, 774 flow. Second operand 11 states and 174 transitions. [2025-02-08 08:11:46,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 140 transitions, 1665 flow [2025-02-08 08:11:46,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 140 transitions, 1443 flow, removed 91 selfloop flow, removed 9 redundant places. [2025-02-08 08:11:46,981 INFO L231 Difference]: Finished difference. Result has 110 places, 80 transitions, 764 flow [2025-02-08 08:11:46,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=764, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2025-02-08 08:11:46,981 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2025-02-08 08:11:46,981 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 764 flow [2025-02-08 08:11:46,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2025-02-08 08:11:46,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:46,982 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:46,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-08 08:11:47,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:47,182 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:47,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:47,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1676444127, now seen corresponding path program 4 times [2025-02-08 08:11:47,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:47,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877972167] [2025-02-08 08:11:47,183 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:11:47,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:47,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:47,188 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:47,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 08:11:47,227 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-08 08:11:47,234 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:11:47,234 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:11:47,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:47,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:11:47,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:47,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:47,359 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:47,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877972167] [2025-02-08 08:11:47,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877972167] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:47,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:47,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 08:11:47,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242710183] [2025-02-08 08:11:47,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:47,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:11:47,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:47,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:11:47,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:11:47,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:47,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 80 transitions, 764 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2025-02-08 08:11:47,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:47,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:47,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:47,668 INFO L124 PetriNetUnfolderBase]: 805/1544 cut-off events. [2025-02-08 08:11:47,668 INFO L125 PetriNetUnfolderBase]: For 19497/19497 co-relation queries the response was YES. [2025-02-08 08:11:47,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6640 conditions, 1544 events. 805/1544 cut-off events. For 19497/19497 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8332 event pairs, 311 based on Foata normal form. 27/1567 useless extension candidates. Maximal degree in co-relation 6593. Up to 1029 conditions per place. [2025-02-08 08:11:47,676 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 87 selfloop transitions, 16 changer transitions 31/138 dead transitions. [2025-02-08 08:11:47,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 138 transitions, 1504 flow [2025-02-08 08:11:47,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 08:11:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 08:11:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-02-08 08:11:47,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-02-08 08:11:47,677 INFO L175 Difference]: Start difference. First operand has 110 places, 80 transitions, 764 flow. Second operand 11 states and 168 transitions. [2025-02-08 08:11:47,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 138 transitions, 1504 flow [2025-02-08 08:11:47,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 138 transitions, 1425 flow, removed 24 selfloop flow, removed 6 redundant places. [2025-02-08 08:11:47,698 INFO L231 Difference]: Finished difference. Result has 116 places, 84 transitions, 806 flow [2025-02-08 08:11:47,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=806, PETRI_PLACES=116, PETRI_TRANSITIONS=84} [2025-02-08 08:11:47,698 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2025-02-08 08:11:47,698 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 84 transitions, 806 flow [2025-02-08 08:11:47,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2025-02-08 08:11:47,699 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:47,699 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:47,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 08:11:47,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:47,899 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:47,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash -122195739, now seen corresponding path program 1 times [2025-02-08 08:11:47,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:47,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88576519] [2025-02-08 08:11:47,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:47,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:47,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:47,902 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:47,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 08:11:47,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 08:11:47,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 08:11:47,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:47,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:47,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:11:47,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:48,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:48,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:48,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:48,164 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:48,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88576519] [2025-02-08 08:11:48,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88576519] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:48,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:11:48,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2025-02-08 08:11:48,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066412810] [2025-02-08 08:11:48,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:48,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 08:11:48,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:48,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 08:11:48,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2025-02-08 08:11:48,166 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:48,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 84 transitions, 806 flow. Second operand has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:48,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:48,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:48,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:49,133 INFO L124 PetriNetUnfolderBase]: 1219/2252 cut-off events. [2025-02-08 08:11:49,134 INFO L125 PetriNetUnfolderBase]: For 37881/37881 co-relation queries the response was YES. [2025-02-08 08:11:49,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10735 conditions, 2252 events. 1219/2252 cut-off events. For 37881/37881 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11703 event pairs, 66 based on Foata normal form. 54/2302 useless extension candidates. Maximal degree in co-relation 10685. Up to 320 conditions per place. [2025-02-08 08:11:49,151 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 98 selfloop transitions, 73 changer transitions 75/250 dead transitions. [2025-02-08 08:11:49,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 250 transitions, 2907 flow [2025-02-08 08:11:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 08:11:49,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-08 08:11:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 399 transitions. [2025-02-08 08:11:49,154 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5291777188328912 [2025-02-08 08:11:49,154 INFO L175 Difference]: Start difference. First operand has 116 places, 84 transitions, 806 flow. Second operand 26 states and 399 transitions. [2025-02-08 08:11:49,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 250 transitions, 2907 flow [2025-02-08 08:11:49,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 250 transitions, 2765 flow, removed 59 selfloop flow, removed 9 redundant places. [2025-02-08 08:11:49,185 INFO L231 Difference]: Finished difference. Result has 145 places, 108 transitions, 1432 flow [2025-02-08 08:11:49,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1432, PETRI_PLACES=145, PETRI_TRANSITIONS=108} [2025-02-08 08:11:49,185 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2025-02-08 08:11:49,185 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 108 transitions, 1432 flow [2025-02-08 08:11:49,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:49,185 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:49,185 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:49,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 08:11:49,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:49,386 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:49,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:49,386 INFO L85 PathProgramCache]: Analyzing trace with hash -176524877, now seen corresponding path program 2 times [2025-02-08 08:11:49,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:49,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742684967] [2025-02-08 08:11:49,387 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:11:49,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:49,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:49,389 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:49,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 08:11:49,420 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-08 08:11:49,430 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 08:11:49,430 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:11:49,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:49,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:11:49,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:11:49,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:11:49,904 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:49,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742684967] [2025-02-08 08:11:49,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742684967] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:49,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:11:49,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2025-02-08 08:11:49,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927170207] [2025-02-08 08:11:49,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:49,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:11:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:49,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:11:49,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2025-02-08 08:11:49,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:49,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 108 transitions, 1432 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2025-02-08 08:11:49,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:49,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:49,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:51,256 INFO L124 PetriNetUnfolderBase]: 1597/3060 cut-off events. [2025-02-08 08:11:51,257 INFO L125 PetriNetUnfolderBase]: For 104585/104585 co-relation queries the response was YES. [2025-02-08 08:11:51,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18554 conditions, 3060 events. 1597/3060 cut-off events. For 104585/104585 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 17505 event pairs, 288 based on Foata normal form. 63/3119 useless extension candidates. Maximal degree in co-relation 18492. Up to 1039 conditions per place. [2025-02-08 08:11:51,274 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 156 selfloop transitions, 72 changer transitions 87/319 dead transitions. [2025-02-08 08:11:51,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 319 transitions, 4808 flow [2025-02-08 08:11:51,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 08:11:51,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-02-08 08:11:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 498 transitions. [2025-02-08 08:11:51,282 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5203761755485894 [2025-02-08 08:11:51,282 INFO L175 Difference]: Start difference. First operand has 145 places, 108 transitions, 1432 flow. Second operand 33 states and 498 transitions. [2025-02-08 08:11:51,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 319 transitions, 4808 flow [2025-02-08 08:11:51,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 319 transitions, 4049 flow, removed 347 selfloop flow, removed 18 redundant places. [2025-02-08 08:11:51,378 INFO L231 Difference]: Finished difference. Result has 170 places, 138 transitions, 1915 flow [2025-02-08 08:11:51,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1915, PETRI_PLACES=170, PETRI_TRANSITIONS=138} [2025-02-08 08:11:51,379 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2025-02-08 08:11:51,379 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 138 transitions, 1915 flow [2025-02-08 08:11:51,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2025-02-08 08:11:51,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:51,380 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:51,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 08:11:51,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:51,580 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:51,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:51,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1991630797, now seen corresponding path program 3 times [2025-02-08 08:11:51,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:51,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286141365] [2025-02-08 08:11:51,581 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:11:51,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:51,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:51,583 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:51,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 08:11:51,618 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 3 equivalence classes. [2025-02-08 08:11:51,629 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 08:11:51,630 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 08:11:51,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:51,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:11:51,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:51,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:51,973 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:51,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286141365] [2025-02-08 08:11:51,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286141365] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:51,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:11:51,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2025-02-08 08:11:51,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109462409] [2025-02-08 08:11:51,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:51,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:11:51,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:51,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:11:51,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2025-02-08 08:11:51,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:51,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 138 transitions, 1915 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2025-02-08 08:11:51,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:51,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:51,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:53,370 INFO L124 PetriNetUnfolderBase]: 1804/3486 cut-off events. [2025-02-08 08:11:53,371 INFO L125 PetriNetUnfolderBase]: For 160042/160042 co-relation queries the response was YES. [2025-02-08 08:11:53,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23135 conditions, 3486 events. 1804/3486 cut-off events. For 160042/160042 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 20578 event pairs, 144 based on Foata normal form. 81/3563 useless extension candidates. Maximal degree in co-relation 23067. Up to 595 conditions per place. [2025-02-08 08:11:53,395 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 146 selfloop transitions, 106 changer transitions 87/343 dead transitions. [2025-02-08 08:11:53,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 343 transitions, 5504 flow [2025-02-08 08:11:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-08 08:11:53,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2025-02-08 08:11:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 531 transitions. [2025-02-08 08:11:53,400 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5231527093596059 [2025-02-08 08:11:53,400 INFO L175 Difference]: Start difference. First operand has 170 places, 138 transitions, 1915 flow. Second operand 35 states and 531 transitions. [2025-02-08 08:11:53,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 343 transitions, 5504 flow [2025-02-08 08:11:53,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 343 transitions, 4369 flow, removed 545 selfloop flow, removed 16 redundant places. [2025-02-08 08:11:53,539 INFO L231 Difference]: Finished difference. Result has 197 places, 153 transitions, 2300 flow [2025-02-08 08:11:53,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2300, PETRI_PLACES=197, PETRI_TRANSITIONS=153} [2025-02-08 08:11:53,540 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2025-02-08 08:11:53,540 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 153 transitions, 2300 flow [2025-02-08 08:11:53,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2025-02-08 08:11:53,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:53,540 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:53,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-08 08:11:53,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:53,741 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:53,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:53,741 INFO L85 PathProgramCache]: Analyzing trace with hash 42705875, now seen corresponding path program 4 times [2025-02-08 08:11:53,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:53,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110918006] [2025-02-08 08:11:53,741 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:11:53,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:53,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:53,743 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:53,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 08:11:53,786 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-02-08 08:11:53,804 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 08:11:53,805 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:11:53,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:53,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:11:53,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:53,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:11:54,147 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:54,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110918006] [2025-02-08 08:11:54,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110918006] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:54,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:11:54,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2025-02-08 08:11:54,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185020194] [2025-02-08 08:11:54,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:54,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:11:54,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:54,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:11:54,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2025-02-08 08:11:54,181 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:54,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 153 transitions, 2300 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2025-02-08 08:11:54,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:54,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:54,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:55,639 INFO L124 PetriNetUnfolderBase]: 1732/3362 cut-off events. [2025-02-08 08:11:55,639 INFO L125 PetriNetUnfolderBase]: For 136754/136754 co-relation queries the response was YES. [2025-02-08 08:11:55,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21075 conditions, 3362 events. 1732/3362 cut-off events. For 136754/136754 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 19806 event pairs, 102 based on Foata normal form. 90/3448 useless extension candidates. Maximal degree in co-relation 20997. Up to 507 conditions per place. [2025-02-08 08:11:55,658 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 126 selfloop transitions, 119 changer transitions 96/345 dead transitions. [2025-02-08 08:11:55,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 345 transitions, 5503 flow [2025-02-08 08:11:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-08 08:11:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-08 08:11:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 515 transitions. [2025-02-08 08:11:55,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5223123732251521 [2025-02-08 08:11:55,660 INFO L175 Difference]: Start difference. First operand has 197 places, 153 transitions, 2300 flow. Second operand 34 states and 515 transitions. [2025-02-08 08:11:55,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 345 transitions, 5503 flow [2025-02-08 08:11:55,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 345 transitions, 4844 flow, removed 292 selfloop flow, removed 23 redundant places. [2025-02-08 08:11:55,841 INFO L231 Difference]: Finished difference. Result has 213 places, 161 transitions, 2582 flow [2025-02-08 08:11:55,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2582, PETRI_PLACES=213, PETRI_TRANSITIONS=161} [2025-02-08 08:11:55,843 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2025-02-08 08:11:55,843 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 161 transitions, 2582 flow [2025-02-08 08:11:55,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2025-02-08 08:11:55,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:55,843 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:55,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 08:11:56,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:56,044 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:56,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:56,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1790792307, now seen corresponding path program 5 times [2025-02-08 08:11:56,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:56,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921998964] [2025-02-08 08:11:56,046 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:11:56,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:56,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:56,050 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:56,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 08:11:56,089 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 4 equivalence classes. [2025-02-08 08:11:56,101 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:11:56,101 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-08 08:11:56,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:56,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 08:11:56,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:56,220 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:11:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:56,556 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:56,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921998964] [2025-02-08 08:11:56,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921998964] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:11:56,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:11:56,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2025-02-08 08:11:56,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975040146] [2025-02-08 08:11:56,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:11:56,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 08:11:56,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:56,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 08:11:56,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2025-02-08 08:11:56,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:11:56,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 161 transitions, 2582 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-02-08 08:11:56,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:56,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:11:56,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:59,014 INFO L124 PetriNetUnfolderBase]: 1669/3257 cut-off events. [2025-02-08 08:11:59,014 INFO L125 PetriNetUnfolderBase]: For 132513/132513 co-relation queries the response was YES. [2025-02-08 08:11:59,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19957 conditions, 3257 events. 1669/3257 cut-off events. For 132513/132513 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 19187 event pairs, 32 based on Foata normal form. 18/3271 useless extension candidates. Maximal degree in co-relation 19875. Up to 477 conditions per place. [2025-02-08 08:11:59,035 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 155 selfloop transitions, 131 changer transitions 81/371 dead transitions. [2025-02-08 08:11:59,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 371 transitions, 5546 flow [2025-02-08 08:11:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-08 08:11:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2025-02-08 08:11:59,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 603 transitions. [2025-02-08 08:11:59,037 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5198275862068965 [2025-02-08 08:11:59,037 INFO L175 Difference]: Start difference. First operand has 213 places, 161 transitions, 2582 flow. Second operand 40 states and 603 transitions. [2025-02-08 08:11:59,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 371 transitions, 5546 flow [2025-02-08 08:11:59,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 371 transitions, 4976 flow, removed 214 selfloop flow, removed 29 redundant places. [2025-02-08 08:11:59,344 INFO L231 Difference]: Finished difference. Result has 221 places, 164 transitions, 2549 flow [2025-02-08 08:11:59,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2549, PETRI_PLACES=221, PETRI_TRANSITIONS=164} [2025-02-08 08:11:59,348 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2025-02-08 08:11:59,348 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 164 transitions, 2549 flow [2025-02-08 08:11:59,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-02-08 08:11:59,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:59,349 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:59,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 08:11:59,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:59,550 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:11:59,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:59,550 INFO L85 PathProgramCache]: Analyzing trace with hash 171571990, now seen corresponding path program 6 times [2025-02-08 08:11:59,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:59,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992145771] [2025-02-08 08:11:59,551 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:11:59,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:59,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:59,553 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:59,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 08:11:59,592 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 5 equivalence classes. [2025-02-08 08:11:59,612 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:11:59,612 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-08 08:11:59,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:59,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 08:11:59,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:59,777 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:00,084 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:00,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992145771] [2025-02-08 08:12:00,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992145771] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:00,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:12:00,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2025-02-08 08:12:00,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668720942] [2025-02-08 08:12:00,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:00,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 08:12:00,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:00,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 08:12:00,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2025-02-08 08:12:00,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:00,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 164 transitions, 2549 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-02-08 08:12:00,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:00,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:00,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:01,330 INFO L124 PetriNetUnfolderBase]: 1795/3515 cut-off events. [2025-02-08 08:12:01,330 INFO L125 PetriNetUnfolderBase]: For 143342/143342 co-relation queries the response was YES. [2025-02-08 08:12:01,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21975 conditions, 3515 events. 1795/3515 cut-off events. For 143342/143342 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21151 event pairs, 815 based on Foata normal form. 45/3556 useless extension candidates. Maximal degree in co-relation 21899. Up to 2574 conditions per place. [2025-02-08 08:12:01,355 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 188 selfloop transitions, 25 changer transitions 61/278 dead transitions. [2025-02-08 08:12:01,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 278 transitions, 4803 flow [2025-02-08 08:12:01,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 08:12:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 08:12:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 312 transitions. [2025-02-08 08:12:01,358 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5123152709359606 [2025-02-08 08:12:01,358 INFO L175 Difference]: Start difference. First operand has 221 places, 164 transitions, 2549 flow. Second operand 21 states and 312 transitions. [2025-02-08 08:12:01,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 278 transitions, 4803 flow [2025-02-08 08:12:01,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 278 transitions, 4108 flow, removed 180 selfloop flow, removed 38 redundant places. [2025-02-08 08:12:01,526 INFO L231 Difference]: Finished difference. Result has 214 places, 172 transitions, 2393 flow [2025-02-08 08:12:01,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2393, PETRI_PLACES=214, PETRI_TRANSITIONS=172} [2025-02-08 08:12:01,527 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2025-02-08 08:12:01,527 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 172 transitions, 2393 flow [2025-02-08 08:12:01,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-02-08 08:12:01,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:01,527 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:01,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-08 08:12:01,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:01,728 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:01,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1107617264, now seen corresponding path program 7 times [2025-02-08 08:12:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:01,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653975997] [2025-02-08 08:12:01,729 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:12:01,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:01,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:01,731 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:01,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 08:12:01,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-08 08:12:01,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:12:01,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:12:01,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:01,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 08:12:01,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:01,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:02,259 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:02,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653975997] [2025-02-08 08:12:02,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653975997] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:02,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:12:02,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2025-02-08 08:12:02,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714273318] [2025-02-08 08:12:02,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:02,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 08:12:02,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:02,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 08:12:02,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2025-02-08 08:12:02,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:02,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 172 transitions, 2393 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-02-08 08:12:02,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:02,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:02,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:04,090 INFO L124 PetriNetUnfolderBase]: 2047/4057 cut-off events. [2025-02-08 08:12:04,091 INFO L125 PetriNetUnfolderBase]: For 179667/179667 co-relation queries the response was YES. [2025-02-08 08:12:04,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25568 conditions, 4057 events. 2047/4057 cut-off events. For 179667/179667 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 25239 event pairs, 552 based on Foata normal form. 63/4116 useless extension candidates. Maximal degree in co-relation 25483. Up to 1792 conditions per place. [2025-02-08 08:12:04,117 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 196 selfloop transitions, 89 changer transitions 103/392 dead transitions. [2025-02-08 08:12:04,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 392 transitions, 6391 flow [2025-02-08 08:12:04,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 08:12:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-08 08:12:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 549 transitions. [2025-02-08 08:12:04,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5116495806150979 [2025-02-08 08:12:04,119 INFO L175 Difference]: Start difference. First operand has 214 places, 172 transitions, 2393 flow. Second operand 37 states and 549 transitions. [2025-02-08 08:12:04,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 392 transitions, 6391 flow [2025-02-08 08:12:04,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 392 transitions, 6010 flow, removed 174 selfloop flow, removed 12 redundant places. [2025-02-08 08:12:04,446 INFO L231 Difference]: Finished difference. Result has 250 places, 197 transitions, 3102 flow [2025-02-08 08:12:04,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3102, PETRI_PLACES=250, PETRI_TRANSITIONS=197} [2025-02-08 08:12:04,447 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2025-02-08 08:12:04,447 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 197 transitions, 3102 flow [2025-02-08 08:12:04,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-02-08 08:12:04,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:04,447 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:04,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-08 08:12:04,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:04,648 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:04,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:04,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1475801566, now seen corresponding path program 8 times [2025-02-08 08:12:04,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:04,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818169364] [2025-02-08 08:12:04,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:12:04,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:04,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:04,652 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:04,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 08:12:04,683 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-08 08:12:04,695 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:12:04,695 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:12:04,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:04,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 08:12:04,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:04,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:05,150 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:05,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818169364] [2025-02-08 08:12:05,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818169364] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:05,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:12:05,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2025-02-08 08:12:05,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500350878] [2025-02-08 08:12:05,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:05,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 08:12:05,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:05,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 08:12:05,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2025-02-08 08:12:05,156 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:05,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 197 transitions, 3102 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-02-08 08:12:05,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:05,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:05,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:07,299 INFO L124 PetriNetUnfolderBase]: 2290/4552 cut-off events. [2025-02-08 08:12:07,300 INFO L125 PetriNetUnfolderBase]: For 295245/295245 co-relation queries the response was YES. [2025-02-08 08:12:07,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33268 conditions, 4552 events. 2290/4552 cut-off events. For 295245/295245 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 28519 event pairs, 300 based on Foata normal form. 63/4611 useless extension candidates. Maximal degree in co-relation 33171. Up to 976 conditions per place. [2025-02-08 08:12:07,394 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 183 selfloop transitions, 143 changer transitions 99/429 dead transitions. [2025-02-08 08:12:07,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 429 transitions, 8017 flow [2025-02-08 08:12:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-02-08 08:12:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2025-02-08 08:12:07,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 587 transitions. [2025-02-08 08:12:07,397 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5190097259062776 [2025-02-08 08:12:07,397 INFO L175 Difference]: Start difference. First operand has 250 places, 197 transitions, 3102 flow. Second operand 39 states and 587 transitions. [2025-02-08 08:12:07,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 429 transitions, 8017 flow [2025-02-08 08:12:07,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 429 transitions, 7261 flow, removed 342 selfloop flow, removed 21 redundant places. [2025-02-08 08:12:07,755 INFO L231 Difference]: Finished difference. Result has 276 places, 211 transitions, 3691 flow [2025-02-08 08:12:07,756 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2700, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3691, PETRI_PLACES=276, PETRI_TRANSITIONS=211} [2025-02-08 08:12:07,756 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2025-02-08 08:12:07,756 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 211 transitions, 3691 flow [2025-02-08 08:12:07,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-02-08 08:12:07,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:07,756 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:07,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-08 08:12:07,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:07,957 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:07,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:07,958 INFO L85 PathProgramCache]: Analyzing trace with hash 955748654, now seen corresponding path program 9 times [2025-02-08 08:12:07,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:07,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378533913] [2025-02-08 08:12:07,958 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:12:07,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:07,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:07,961 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:07,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 08:12:07,993 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 5 equivalence classes. [2025-02-08 08:12:08,006 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:12:08,006 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-08 08:12:08,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:08,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 08:12:08,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:08,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:08,457 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:08,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378533913] [2025-02-08 08:12:08,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378533913] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:08,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:12:08,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2025-02-08 08:12:08,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565286174] [2025-02-08 08:12:08,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:08,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 08:12:08,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:08,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 08:12:08,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2025-02-08 08:12:08,460 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:08,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 211 transitions, 3691 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-02-08 08:12:08,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:08,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:08,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:10,624 INFO L124 PetriNetUnfolderBase]: 2452/4879 cut-off events. [2025-02-08 08:12:10,625 INFO L125 PetriNetUnfolderBase]: For 423774/423774 co-relation queries the response was YES. [2025-02-08 08:12:10,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39713 conditions, 4879 events. 2452/4879 cut-off events. For 423774/423774 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 30873 event pairs, 136 based on Foata normal form. 81/4956 useless extension candidates. Maximal degree in co-relation 39608. Up to 876 conditions per place. [2025-02-08 08:12:10,735 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 161 selfloop transitions, 174 changer transitions 91/430 dead transitions. [2025-02-08 08:12:10,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 430 transitions, 8964 flow [2025-02-08 08:12:10,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 08:12:10,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-08 08:12:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 565 transitions. [2025-02-08 08:12:10,737 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5265610438024231 [2025-02-08 08:12:10,737 INFO L175 Difference]: Start difference. First operand has 276 places, 211 transitions, 3691 flow. Second operand 37 states and 565 transitions. [2025-02-08 08:12:10,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 430 transitions, 8964 flow [2025-02-08 08:12:11,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 430 transitions, 7725 flow, removed 567 selfloop flow, removed 21 redundant places. [2025-02-08 08:12:11,201 INFO L231 Difference]: Finished difference. Result has 300 places, 220 transitions, 4206 flow [2025-02-08 08:12:11,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3164, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4206, PETRI_PLACES=300, PETRI_TRANSITIONS=220} [2025-02-08 08:12:11,201 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2025-02-08 08:12:11,202 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 220 transitions, 4206 flow [2025-02-08 08:12:11,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-02-08 08:12:11,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:11,202 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:11,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-08 08:12:11,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:11,403 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:11,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash -673759622, now seen corresponding path program 10 times [2025-02-08 08:12:11,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:11,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346413519] [2025-02-08 08:12:11,404 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:12:11,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:11,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:11,408 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:11,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 08:12:11,444 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-02-08 08:12:11,455 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:12:11,455 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:12:11,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:12:11,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 08:12:11,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:12:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:11,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:12:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:12:11,906 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:12:11,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346413519] [2025-02-08 08:12:11,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346413519] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:12:11,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:12:11,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2025-02-08 08:12:11,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908384863] [2025-02-08 08:12:11,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:12:11,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 08:12:11,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:12:11,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 08:12:11,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-02-08 08:12:11,915 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:12:11,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 220 transitions, 4206 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-02-08 08:12:11,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:12:11,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:12:11,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:12:13,796 INFO L124 PetriNetUnfolderBase]: 2371/4735 cut-off events. [2025-02-08 08:12:13,796 INFO L125 PetriNetUnfolderBase]: For 406845/406845 co-relation queries the response was YES. [2025-02-08 08:12:13,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37877 conditions, 4735 events. 2371/4735 cut-off events. For 406845/406845 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 29869 event pairs, 82 based on Foata normal form. 90/4821 useless extension candidates. Maximal degree in co-relation 37762. Up to 846 conditions per place. [2025-02-08 08:12:13,836 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 129 selfloop transitions, 188 changer transitions 96/417 dead transitions. [2025-02-08 08:12:13,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 417 transitions, 8971 flow [2025-02-08 08:12:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-08 08:12:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-08 08:12:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 517 transitions. [2025-02-08 08:12:13,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5243407707910751 [2025-02-08 08:12:13,837 INFO L175 Difference]: Start difference. First operand has 300 places, 220 transitions, 4206 flow. Second operand 34 states and 517 transitions. [2025-02-08 08:12:13,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 417 transitions, 8971 flow [2025-02-08 08:12:14,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 417 transitions, 7859 flow, removed 416 selfloop flow, removed 30 redundant places. [2025-02-08 08:12:14,616 INFO L231 Difference]: Finished difference. Result has 309 places, 227 transitions, 4469 flow [2025-02-08 08:12:14,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3511, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4469, PETRI_PLACES=309, PETRI_TRANSITIONS=227} [2025-02-08 08:12:14,617 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2025-02-08 08:12:14,618 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 227 transitions, 4469 flow [2025-02-08 08:12:14,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-02-08 08:12:14,618 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:12:14,618 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:12:14,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 08:12:14,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:14,822 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 08:12:14,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:12:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1783315618, now seen corresponding path program 11 times [2025-02-08 08:12:14,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:12:14,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454078688] [2025-02-08 08:12:14,823 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:12:14,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:14,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:12:14,827 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:12:14,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-08 08:12:14,864 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 40 statements into 5 equivalence classes. [2025-02-08 08:12:14,877 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 40 of 40 statements. [2025-02-08 08:12:14,877 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 08:12:14,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:12:14,877 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:12:14,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-08 08:12:14,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-08 08:12:14,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:12:14,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:12:14,911 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-02-08 08:12:14,911 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:12:14,912 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-02-08 08:12:14,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-02-08 08:12:14,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-02-08 08:12:14,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-02-08 08:12:14,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-08 08:12:15,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:12:15,114 INFO L422 BasicCegarLoop]: Path program histogram: [11, 4, 4, 2, 1, 1, 1, 1] [2025-02-08 08:12:15,158 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:12:15,158 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:12:15,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:12:15 BasicIcfg [2025-02-08 08:12:15,162 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:12:15,163 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:12:15,163 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:12:15,163 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:12:15,164 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:39" (3/4) ... [2025-02-08 08:12:15,165 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:12:15,166 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:12:15,166 INFO L158 Benchmark]: Toolchain (without parser) took 36813.30ms. Allocated memory was 142.6MB in the beginning and 872.4MB in the end (delta: 729.8MB). Free memory was 115.5MB in the beginning and 452.5MB in the end (delta: -337.0MB). Peak memory consumption was 392.1MB. Max. memory is 16.1GB. [2025-02-08 08:12:15,166 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 117.4MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:12:15,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.31ms. Allocated memory is still 142.6MB. Free memory was 115.3MB in the beginning and 95.5MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:12:15,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.63ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:12:15,167 INFO L158 Benchmark]: Boogie Preprocessor took 30.36ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 92.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:12:15,167 INFO L158 Benchmark]: IcfgBuilder took 403.85ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 68.6MB in the end (delta: 23.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 08:12:15,168 INFO L158 Benchmark]: TraceAbstraction took 35956.09ms. Allocated memory was 142.6MB in the beginning and 872.4MB in the end (delta: 729.8MB). Free memory was 68.0MB in the beginning and 453.0MB in the end (delta: -385.0MB). Peak memory consumption was 341.8MB. Max. memory is 16.1GB. [2025-02-08 08:12:15,168 INFO L158 Benchmark]: Witness Printer took 2.69ms. Allocated memory is still 872.4MB. Free memory was 453.0MB in the beginning and 452.5MB in the end (delta: 479.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:12:15,169 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 117.4MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.31ms. Allocated memory is still 142.6MB. Free memory was 115.3MB in the beginning and 95.5MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.63ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.36ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 92.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 403.85ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 68.6MB in the end (delta: 23.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 35956.09ms. Allocated memory was 142.6MB in the beginning and 872.4MB in the end (delta: 729.8MB). Free memory was 68.0MB in the beginning and 453.0MB in the end (delta: -385.0MB). Peak memory consumption was 341.8MB. Max. memory is 16.1GB. * Witness Printer took 2.69ms. Allocated memory is still 872.4MB. Free memory was 453.0MB in the beginning and 452.5MB in the end (delta: 479.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(arg)={0:0}, \old(argc)=0, \old(argv)={0:0}, argc=0, i=3, id1=-1, j=6] [L696] 1 int k = 0; VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=0, \old(argv)={0:0}, arg={0:0}, argc=0, i=3, id1=-1, id2=0, j=6, k=0] [L704] 2 int k = 0; VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L716] 0 int condI = i >= (2*5 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=0, \old(argv)={0:0}, arg={0:0}, arg={0:0}, argc=0, condI=0, i=7, id1=-1, id2=0, j=8, k=1, k=1] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L719] 0 int condJ = j >= (2*5 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=0, \old(argv)={0:0}, arg={0:0}, arg={0:0}, argc=0, condI=0, condJ=1, i=15, id1=-1, id2=0, j=16, k=4, k=4] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L693] 0 __assert_fail ("0", "triangular-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 35.8s, OverallIterations: 25, TraceHistogramMax: 5, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 24.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5190 SdHoareTripleChecker+Valid, 8.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5186 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 7.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 285 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16865 IncrementalHoareTripleChecker+Invalid, 17150 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 285 mSolverCounterUnsat, 2 mSDtfsCounter, 16865 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1230 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 627 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5398 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4469occurred in iteration=24, InterpolantAutomatonStates: 480, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 595 NumberOfCodeBlocks, 595 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 876 ConstructedInterpolants, 0 QuantifiedInterpolants, 5971 SizeOfPredicates, 127 NumberOfNonLiveVariables, 1334 ConjunctsInSsa, 198 ConjunctsInUnsatCore, 35 InterpolantComputations, 13 PerfectInterpolantSequences, 19/437 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-08 08:12:15,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample