./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.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-C-DAC/pthread-demo-datarace-3.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 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:28:46,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:28:46,478 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:28:46,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:28:46,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:28:46,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:28:46,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:28:46,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:28:46,496 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:28:46,496 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:28:46,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:28:46,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:28:46,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:28:46,497 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:28:46,498 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:28:46,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:28:46,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:28:46,498 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 -> 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 [2025-02-08 08:28:46,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:28:46,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:28:46,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:28:46,687 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:28:46,687 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:28:46,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2025-02-08 08:28:47,808 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/32aac92b8/298d738d205141fab8ab53720257c6e8/FLAG2adb0b2e8 [2025-02-08 08:28:48,115 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:28:48,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2025-02-08 08:28:48,131 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/32aac92b8/298d738d205141fab8ab53720257c6e8/FLAG2adb0b2e8 [2025-02-08 08:28:48,387 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/32aac92b8/298d738d205141fab8ab53720257c6e8 [2025-02-08 08:28:48,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:28:48,389 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:28:48,390 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:28:48,390 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:28:48,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:28:48,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dda3935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48, skipping insertion in model container [2025-02-08 08:28:48,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,420 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:28:48,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:28:48,822 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:28:48,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:28:48,923 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:28:48,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48 WrapperNode [2025-02-08 08:28:48,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:28:48,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:28:48,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:28:48,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:28:48,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,984 INFO L138 Inliner]: procedures = 364, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2025-02-08 08:28:48,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:28:48,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:28:48,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:28:48,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:28:48,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:49,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:49,003 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:49,024 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 08:28:49,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:49,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:49,042 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:49,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:49,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:49,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:49,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:28:49,052 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:28:49,052 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:28:49,052 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:28:49,053 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:49,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:28:49,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:49,086 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 08:28:49,089 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 08:28:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:28:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:28:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2025-02-08 08:28:49,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2025-02-08 08:28:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:28:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:28:49,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:28:49,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:28:49,106 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 08:28:49,223 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:28:49,225 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:28:49,379 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:28:49,379 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:28:49,551 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:28:49,551 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:28:49,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:28:49 BoogieIcfgContainer [2025-02-08 08:28:49,551 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:28:49,553 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:28:49,553 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:28:49,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:28:49,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:28:48" (1/3) ... [2025-02-08 08:28:49,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f349b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:28:49, skipping insertion in model container [2025-02-08 08:28:49,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (2/3) ... [2025-02-08 08:28:49,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f349b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:28:49, skipping insertion in model container [2025-02-08 08:28:49,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:28:49" (3/3) ... [2025-02-08 08:28:49,558 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i [2025-02-08 08:28:49,567 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:28:49,569 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pthread-demo-datarace-3.i that has 2 procedures, 24 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-08 08:28:49,569 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:28:49,593 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-08 08:28:49,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 27 transitions, 61 flow [2025-02-08 08:28:49,629 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2025-02-08 08:28:49,631 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:28:49,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 26 events. 4/26 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2025-02-08 08:28:49,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 27 transitions, 61 flow [2025-02-08 08:28:49,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 25 transitions, 56 flow [2025-02-08 08:28:49,639 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:28:49,646 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;@5ad3f025, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:28:49,646 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-08 08:28:49,653 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:28:49,653 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2025-02-08 08:28:49,653 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:28:49,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:49,654 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:28:49,654 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:49,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:49,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1914804769, now seen corresponding path program 1 times [2025-02-08 08:28:49,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:49,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140260048] [2025-02-08 08:28:49,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:28:49,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:49,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 08:28:49,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 08:28:49,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:28:49,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:49,885 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 08:28:49,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:49,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140260048] [2025-02-08 08:28:49,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140260048] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:28:49,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:28:49,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:28:49,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073767146] [2025-02-08 08:28:49,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:28:49,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:28:49,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:49,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:28:49,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:28:49,942 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-02-08 08:28:49,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 08:28:49,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:49,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-02-08 08:28:49,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:50,034 INFO L124 PetriNetUnfolderBase]: 37/90 cut-off events. [2025-02-08 08:28:50,037 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:28:50,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 90 events. 37/90 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 277 event pairs, 15 based on Foata normal form. 9/98 useless extension candidates. Maximal degree in co-relation 154. Up to 54 conditions per place. [2025-02-08 08:28:50,039 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 21 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2025-02-08 08:28:50,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 28 transitions, 108 flow [2025-02-08 08:28:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:28:50,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:28:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2025-02-08 08:28:50,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2025-02-08 08:28:50,062 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 56 flow. Second operand 3 states and 48 transitions. [2025-02-08 08:28:50,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 28 transitions, 108 flow [2025-02-08 08:28:50,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:28:50,068 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 52 flow [2025-02-08 08:28:50,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2025-02-08 08:28:50,074 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2025-02-08 08:28:50,075 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 52 flow [2025-02-08 08:28:50,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 08:28:50,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:50,075 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:28:50,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:28:50,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:50,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:50,076 INFO L85 PathProgramCache]: Analyzing trace with hash 565344361, now seen corresponding path program 1 times [2025-02-08 08:28:50,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:50,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954199609] [2025-02-08 08:28:50,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:28:50,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:50,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 08:28:50,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:28:50,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:28:50,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:28:50,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:50,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954199609] [2025-02-08 08:28:50,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954199609] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:28:50,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:28:50,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:28:50,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537798798] [2025-02-08 08:28:50,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:28:50,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:28:50,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:50,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:28:50,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:28:50,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 08:28:50,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 08:28:50,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:50,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 08:28:50,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:50,286 INFO L124 PetriNetUnfolderBase]: 51/122 cut-off events. [2025-02-08 08:28:50,286 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2025-02-08 08:28:50,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 122 events. 51/122 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 370 event pairs, 20 based on Foata normal form. 5/127 useless extension candidates. Maximal degree in co-relation 65. Up to 66 conditions per place. [2025-02-08 08:28:50,287 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 21 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2025-02-08 08:28:50,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 28 transitions, 122 flow [2025-02-08 08:28:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:28:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:28:50,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2025-02-08 08:28:50,288 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2025-02-08 08:28:50,288 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 52 flow. Second operand 3 states and 46 transitions. [2025-02-08 08:28:50,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 28 transitions, 122 flow [2025-02-08 08:28:50,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:28:50,289 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 62 flow [2025-02-08 08:28:50,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2025-02-08 08:28:50,290 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2025-02-08 08:28:50,290 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 62 flow [2025-02-08 08:28:50,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 08:28:50,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:50,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:28:50,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:28:50,291 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:50,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash -335850864, now seen corresponding path program 1 times [2025-02-08 08:28:50,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:50,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884345238] [2025-02-08 08:28:50,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:28:50,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:50,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:28:50,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:28:50,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:28:50,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:50,386 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 08:28:50,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:50,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884345238] [2025-02-08 08:28:50,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884345238] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:28:50,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792317160] [2025-02-08 08:28:50,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:28:50,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:50,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:50,389 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 08:28:50,391 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 08:28:50,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 08:28:50,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 08:28:50,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:28:50,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:50,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:28:50,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:28:50,505 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 08:28:50,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:28:50,529 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 08:28:50,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792317160] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:28:50,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:28:50,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-08 08:28:50,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006425223] [2025-02-08 08:28:50,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:28:50,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 08:28:50,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:50,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 08:28:50,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 08:28:50,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-02-08 08:28:50,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 08:28:50,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:50,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-02-08 08:28:50,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:50,668 INFO L124 PetriNetUnfolderBase]: 116/242 cut-off events. [2025-02-08 08:28:50,668 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2025-02-08 08:28:50,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 242 events. 116/242 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 714 event pairs, 8 based on Foata normal form. 15/257 useless extension candidates. Maximal degree in co-relation 153. Up to 69 conditions per place. [2025-02-08 08:28:50,669 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 42 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2025-02-08 08:28:50,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 52 transitions, 248 flow [2025-02-08 08:28:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:28:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 08:28:50,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2025-02-08 08:28:50,671 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2025-02-08 08:28:50,671 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 62 flow. Second operand 6 states and 88 transitions. [2025-02-08 08:28:50,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 52 transitions, 248 flow [2025-02-08 08:28:50,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 52 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:28:50,672 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 100 flow [2025-02-08 08:28:50,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2025-02-08 08:28:50,673 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2025-02-08 08:28:50,673 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 100 flow [2025-02-08 08:28:50,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 08:28:50,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:50,673 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:28:50,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 08:28:50,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:50,875 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:50,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1286615683, now seen corresponding path program 2 times [2025-02-08 08:28:50,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:50,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173387727] [2025-02-08 08:28:50,875 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:28:50,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:50,890 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-08 08:28:50,897 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 34 statements. [2025-02-08 08:28:50,897 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:28:50,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-08 08:28:50,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:50,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173387727] [2025-02-08 08:28:50,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173387727] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:28:50,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:28:50,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:28:50,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956431207] [2025-02-08 08:28:50,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:28:50,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:28:50,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:50,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:28:50,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:28:50,968 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-02-08 08:28:50,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 08:28:50,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:50,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-02-08 08:28:50,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:51,048 INFO L124 PetriNetUnfolderBase]: 149/360 cut-off events. [2025-02-08 08:28:51,049 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2025-02-08 08:28:51,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 360 events. 149/360 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1403 event pairs, 54 based on Foata normal form. 19/378 useless extension candidates. Maximal degree in co-relation 581. Up to 154 conditions per place. [2025-02-08 08:28:51,051 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 37 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2025-02-08 08:28:51,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 296 flow [2025-02-08 08:28:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:28:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:28:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2025-02-08 08:28:51,052 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-08 08:28:51,052 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 100 flow. Second operand 4 states and 60 transitions. [2025-02-08 08:28:51,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 296 flow [2025-02-08 08:28:51,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 272 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-02-08 08:28:51,054 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 108 flow [2025-02-08 08:28:51,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2025-02-08 08:28:51,054 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2025-02-08 08:28:51,054 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 108 flow [2025-02-08 08:28:51,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 08:28:51,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:51,055 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:28:51,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:28:51,055 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:51,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:51,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1958799600, now seen corresponding path program 3 times [2025-02-08 08:28:51,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:51,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044082952] [2025-02-08 08:28:51,055 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:28:51,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:51,069 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 3 equivalence classes. [2025-02-08 08:28:51,087 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:28:51,090 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 08:28:51,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 08:28:51,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:51,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044082952] [2025-02-08 08:28:51,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044082952] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:28:51,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951630921] [2025-02-08 08:28:51,167 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:28:51,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:51,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:51,171 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 08:28:51,172 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 08:28:51,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 3 equivalence classes. [2025-02-08 08:28:51,282 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 08:28:51,282 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 08:28:51,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:51,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:28:51,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:28:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 08:28:51,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:28:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 08:28:51,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951630921] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:28:51,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:28:51,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-08 08:28:51,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850298242] [2025-02-08 08:28:51,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:28:51,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 08:28:51,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:51,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 08:28:51,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-08 08:28:51,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 08:28:51,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 108 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:28:51,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:51,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 08:28:51,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:51,511 INFO L124 PetriNetUnfolderBase]: 382/796 cut-off events. [2025-02-08 08:28:51,511 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2025-02-08 08:28:51,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 796 events. 382/796 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3529 event pairs, 36 based on Foata normal form. 76/872 useless extension candidates. Maximal degree in co-relation 1414. Up to 134 conditions per place. [2025-02-08 08:28:51,518 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 81 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2025-02-08 08:28:51,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 93 transitions, 602 flow [2025-02-08 08:28:51,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:28:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:28:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2025-02-08 08:28:51,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-02-08 08:28:51,519 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 108 flow. Second operand 8 states and 120 transitions. [2025-02-08 08:28:51,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 93 transitions, 602 flow [2025-02-08 08:28:51,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 93 transitions, 596 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-08 08:28:51,524 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 160 flow [2025-02-08 08:28:51,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2025-02-08 08:28:51,524 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2025-02-08 08:28:51,524 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 160 flow [2025-02-08 08:28:51,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:28:51,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:51,525 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:28:51,531 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 08:28:51,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:51,726 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:51,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:51,726 INFO L85 PathProgramCache]: Analyzing trace with hash -76176848, now seen corresponding path program 4 times [2025-02-08 08:28:51,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:51,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130058596] [2025-02-08 08:28:51,727 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:28:51,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:51,740 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-02-08 08:28:51,747 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-02-08 08:28:51,747 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:28:51,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-08 08:28:51,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:51,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130058596] [2025-02-08 08:28:51,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130058596] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:28:51,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037833792] [2025-02-08 08:28:51,858 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:28:51,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:51,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:51,860 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 08:28:51,862 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 08:28:51,928 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-02-08 08:28:51,947 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-02-08 08:28:51,948 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:28:51,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:51,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:28:51,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:28:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-08 08:28:52,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:28:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-08 08:28:52,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037833792] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:28:52,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:28:52,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-02-08 08:28:52,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972234284] [2025-02-08 08:28:52,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:28:52,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 08:28:52,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:52,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 08:28:52,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-02-08 08:28:52,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 08:28:52,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 160 flow. Second operand has 16 states, 16 states have (on average 9.5625) internal successors, (153), 16 states have internal predecessors, (153), 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 08:28:52,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:52,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 08:28:52,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:52,459 INFO L124 PetriNetUnfolderBase]: 816/1694 cut-off events. [2025-02-08 08:28:52,459 INFO L125 PetriNetUnfolderBase]: For 3460/3460 co-relation queries the response was YES. [2025-02-08 08:28:52,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5670 conditions, 1694 events. 816/1694 cut-off events. For 3460/3460 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7818 event pairs, 49 based on Foata normal form. 152/1846 useless extension candidates. Maximal degree in co-relation 3667. Up to 304 conditions per place. [2025-02-08 08:28:52,492 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 169 selfloop transitions, 16 changer transitions 0/189 dead transitions. [2025-02-08 08:28:52,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 189 transitions, 1348 flow [2025-02-08 08:28:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 08:28:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 08:28:52,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 244 transitions. [2025-02-08 08:28:52,495 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2025-02-08 08:28:52,495 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 160 flow. Second operand 16 states and 244 transitions. [2025-02-08 08:28:52,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 189 transitions, 1348 flow [2025-02-08 08:28:52,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 189 transitions, 1296 flow, removed 24 selfloop flow, removed 2 redundant places. [2025-02-08 08:28:52,502 INFO L231 Difference]: Finished difference. Result has 67 places, 38 transitions, 264 flow [2025-02-08 08:28:52,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=264, PETRI_PLACES=67, PETRI_TRANSITIONS=38} [2025-02-08 08:28:52,503 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 42 predicate places. [2025-02-08 08:28:52,503 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 38 transitions, 264 flow [2025-02-08 08:28:52,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.5625) internal successors, (153), 16 states have internal predecessors, (153), 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 08:28:52,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:52,503 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:28:52,513 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 08:28:52,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:52,704 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:52,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:52,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1818776732, now seen corresponding path program 5 times [2025-02-08 08:28:52,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:52,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854819049] [2025-02-08 08:28:52,707 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:28:52,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:52,720 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 73 statements into 15 equivalence classes. [2025-02-08 08:28:52,730 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 73 of 73 statements. [2025-02-08 08:28:52,730 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-02-08 08:28:52,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2025-02-08 08:28:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:52,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854819049] [2025-02-08 08:28:52,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854819049] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:28:52,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75442820] [2025-02-08 08:28:52,823 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:28:52,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:52,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:52,824 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 08:28:52,830 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 08:28:52,895 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 73 statements into 15 equivalence classes. [2025-02-08 08:28:52,919 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 73 of 73 statements. [2025-02-08 08:28:52,919 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-02-08 08:28:52,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:52,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:28:52,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:28:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2025-02-08 08:28:52,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:28:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2025-02-08 08:28:53,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75442820] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:28:53,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:28:53,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-08 08:28:53,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734973470] [2025-02-08 08:28:53,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:28:53,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 08:28:53,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:53,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 08:28:53,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-02-08 08:28:53,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-02-08 08:28:53,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 38 transitions, 264 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 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 08:28:53,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:53,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-02-08 08:28:53,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:53,658 INFO L124 PetriNetUnfolderBase]: 1540/3165 cut-off events. [2025-02-08 08:28:53,660 INFO L125 PetriNetUnfolderBase]: For 7996/7996 co-relation queries the response was YES. [2025-02-08 08:28:53,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10598 conditions, 3165 events. 1540/3165 cut-off events. For 7996/7996 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 18087 event pairs, 58 based on Foata normal form. 180/3345 useless extension candidates. Maximal degree in co-relation 9327. Up to 795 conditions per place. [2025-02-08 08:28:53,676 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 222 selfloop transitions, 12 changer transitions 0/240 dead transitions. [2025-02-08 08:28:53,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 240 transitions, 2270 flow [2025-02-08 08:28:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 08:28:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 08:28:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 181 transitions. [2025-02-08 08:28:53,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.558641975308642 [2025-02-08 08:28:53,677 INFO L175 Difference]: Start difference. First operand has 67 places, 38 transitions, 264 flow. Second operand 12 states and 181 transitions. [2025-02-08 08:28:53,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 240 transitions, 2270 flow [2025-02-08 08:28:53,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 240 transitions, 2160 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 08:28:53,688 INFO L231 Difference]: Finished difference. Result has 80 places, 45 transitions, 350 flow [2025-02-08 08:28:53,688 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=350, PETRI_PLACES=80, PETRI_TRANSITIONS=45} [2025-02-08 08:28:53,689 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 55 predicate places. [2025-02-08 08:28:53,689 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 45 transitions, 350 flow [2025-02-08 08:28:53,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 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 08:28:53,689 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:53,689 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:28:53,696 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 08:28:53,890 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,SelfDestructingSolverStorable6 [2025-02-08 08:28:53,890 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:53,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:53,891 INFO L85 PathProgramCache]: Analyzing trace with hash -624556328, now seen corresponding path program 6 times [2025-02-08 08:28:53,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:53,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064172341] [2025-02-08 08:28:53,891 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:28:53,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:53,906 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 103 statements into 14 equivalence classes. [2025-02-08 08:28:53,927 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) and asserted 103 of 103 statements. [2025-02-08 08:28:53,927 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2025-02-08 08:28:53,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-02-08 08:28:54,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:54,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064172341] [2025-02-08 08:28:54,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064172341] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:28:54,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127471433] [2025-02-08 08:28:54,230 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:28:54,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:54,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:54,234 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 08:28:54,235 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 08:28:54,307 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 103 statements into 14 equivalence classes. [2025-02-08 08:28:54,356 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) and asserted 103 of 103 statements. [2025-02-08 08:28:54,356 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2025-02-08 08:28:54,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:54,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 08:28:54,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:28:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-02-08 08:28:54,474 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:28:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-02-08 08:28:54,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127471433] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:28:54,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:28:54,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2025-02-08 08:28:54,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719170098] [2025-02-08 08:28:54,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:28:54,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 08:28:54,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:54,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 08:28:54,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-02-08 08:28:54,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 08:28:54,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 45 transitions, 350 flow. Second operand has 23 states, 23 states have (on average 9.73913043478261) internal successors, (224), 23 states have internal predecessors, (224), 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 08:28:54,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:54,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 08:28:54,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:55,516 INFO L124 PetriNetUnfolderBase]: 2649/5383 cut-off events. [2025-02-08 08:28:55,517 INFO L125 PetriNetUnfolderBase]: For 35422/35422 co-relation queries the response was YES. [2025-02-08 08:28:55,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20210 conditions, 5383 events. 2649/5383 cut-off events. For 35422/35422 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 30418 event pairs, 84 based on Foata normal form. 258/5641 useless extension candidates. Maximal degree in co-relation 16638. Up to 946 conditions per place. [2025-02-08 08:28:55,549 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 361 selfloop transitions, 22 changer transitions 0/388 dead transitions. [2025-02-08 08:28:55,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 388 transitions, 3950 flow [2025-02-08 08:28:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 08:28:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 08:28:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 332 transitions. [2025-02-08 08:28:55,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5589225589225589 [2025-02-08 08:28:55,551 INFO L175 Difference]: Start difference. First operand has 80 places, 45 transitions, 350 flow. Second operand 22 states and 332 transitions. [2025-02-08 08:28:55,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 388 transitions, 3950 flow [2025-02-08 08:28:55,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 388 transitions, 3824 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 08:28:55,576 INFO L231 Difference]: Finished difference. Result has 105 places, 52 transitions, 488 flow [2025-02-08 08:28:55,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=488, PETRI_PLACES=105, PETRI_TRANSITIONS=52} [2025-02-08 08:28:55,576 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 80 predicate places. [2025-02-08 08:28:55,576 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 52 transitions, 488 flow [2025-02-08 08:28:55,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.73913043478261) internal successors, (224), 23 states have internal predecessors, (224), 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 08:28:55,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:55,577 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:28:55,584 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 08:28:55,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:55,781 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:55,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:55,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1547329846, now seen corresponding path program 7 times [2025-02-08 08:28:55,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:55,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359954764] [2025-02-08 08:28:55,782 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:28:55,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:55,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-08 08:28:55,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-08 08:28:55,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:28:55,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:56,018 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2025-02-08 08:28:56,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:56,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359954764] [2025-02-08 08:28:56,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359954764] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:28:56,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174318175] [2025-02-08 08:28:56,019 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:28:56,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:56,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:56,020 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 08:28:56,022 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 08:28:56,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-08 08:28:56,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-08 08:28:56,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:28:56,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:56,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 08:28:56,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:28:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2025-02-08 08:28:56,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:28:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2025-02-08 08:28:56,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174318175] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:28:56,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:28:56,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2025-02-08 08:28:56,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152311491] [2025-02-08 08:28:56,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:28:56,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 08:28:56,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:56,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 08:28:56,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-02-08 08:28:56,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-02-08 08:28:56,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 52 transitions, 488 flow. Second operand has 23 states, 23 states have (on average 12.173913043478262) internal successors, (280), 23 states have internal predecessors, (280), 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 08:28:56,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:56,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-02-08 08:28:56,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:57,882 INFO L124 PetriNetUnfolderBase]: 4231/8704 cut-off events. [2025-02-08 08:28:57,887 INFO L125 PetriNetUnfolderBase]: For 50482/50482 co-relation queries the response was YES. [2025-02-08 08:28:57,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34721 conditions, 8704 events. 4231/8704 cut-off events. For 50482/50482 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 54737 event pairs, 182 based on Foata normal form. 420/9124 useless extension candidates. Maximal degree in co-relation 31507. Up to 2163 conditions per place. [2025-02-08 08:28:58,001 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 548 selfloop transitions, 22 changer transitions 0/577 dead transitions. [2025-02-08 08:28:58,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 577 transitions, 6914 flow [2025-02-08 08:28:58,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 08:28:58,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 08:28:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 335 transitions. [2025-02-08 08:28:58,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.563973063973064 [2025-02-08 08:28:58,006 INFO L175 Difference]: Start difference. First operand has 105 places, 52 transitions, 488 flow. Second operand 22 states and 335 transitions. [2025-02-08 08:28:58,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 577 transitions, 6914 flow [2025-02-08 08:28:58,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 577 transitions, 6368 flow, removed 0 selfloop flow, removed 13 redundant places. [2025-02-08 08:28:58,125 INFO L231 Difference]: Finished difference. Result has 124 places, 63 transitions, 662 flow [2025-02-08 08:28:58,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=662, PETRI_PLACES=124, PETRI_TRANSITIONS=63} [2025-02-08 08:28:58,129 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 99 predicate places. [2025-02-08 08:28:58,130 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 63 transitions, 662 flow [2025-02-08 08:28:58,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.173913043478262) internal successors, (280), 23 states have internal predecessors, (280), 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 08:28:58,130 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:58,130 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:28:58,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 08:28:58,331 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,SelfDestructingSolverStorable8 [2025-02-08 08:28:58,335 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:58,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:58,336 INFO L85 PathProgramCache]: Analyzing trace with hash 730407498, now seen corresponding path program 8 times [2025-02-08 08:28:58,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:58,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641066633] [2025-02-08 08:28:58,336 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:28:58,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:58,349 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 171 statements into 2 equivalence classes. [2025-02-08 08:28:58,380 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 171 of 171 statements. [2025-02-08 08:28:58,381 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:28:58,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:29:00,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:29:00,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641066633] [2025-02-08 08:29:00,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641066633] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:29:00,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610037609] [2025-02-08 08:29:00,588 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:29:00,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:29:00,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:29:00,590 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 08:29:00,598 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 08:29:00,681 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 171 statements into 2 equivalence classes. [2025-02-08 08:29:00,721 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 171 of 171 statements. [2025-02-08 08:29:00,721 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:29:00,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:00,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 82 conjuncts are in the unsatisfiable core [2025-02-08 08:29:00,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:29:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:29:01,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:29:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:29:02,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610037609] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:29:02,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:29:02,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 69 [2025-02-08 08:29:02,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896867181] [2025-02-08 08:29:02,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:29:02,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2025-02-08 08:29:02,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:29:02,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2025-02-08 08:29:02,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1258, Invalid=3572, Unknown=0, NotChecked=0, Total=4830 [2025-02-08 08:29:02,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-02-08 08:29:02,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 63 transitions, 662 flow. Second operand has 70 states, 70 states have (on average 9.228571428571428) internal successors, (646), 70 states have internal predecessors, (646), 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 08:29:02,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:29:02,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-02-08 08:29:02,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand