./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:53:51,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:53:51,707 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:53:51,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:53:51,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:53:51,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:53:51,737 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:53:51,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:53:51,738 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:53:51,738 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:53:51,738 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:53:51,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:53:51,738 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:53:51,738 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:53:51,738 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:53:51,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:53:51,738 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:53:51,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:53:51,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:53:51,740 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:53:51,740 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:53:51,740 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:53:51,741 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:53:51,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:53:51,741 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:53:51,741 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:53:51,741 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:53:51,741 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:53:51,741 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:53:51,741 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:53:51,741 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:53:51,742 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:53:51,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:53:51,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:53:51,742 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:53:51,742 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:53:51,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:53:51,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:53:51,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:53:51,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:53:51,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:53:51,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:53:51,742 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 -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2025-02-06 12:53:51,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:53:51,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:53:52,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:53:52,002 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:53:52,002 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:53:52,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2025-02-06 12:53:53,226 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/34790b1d2/be553d3a31bf4ada9bc5f67571371667/FLAG6a8b74f3c [2025-02-06 12:53:53,715 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:53:53,716 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2025-02-06 12:53:53,749 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/34790b1d2/be553d3a31bf4ada9bc5f67571371667/FLAG6a8b74f3c [2025-02-06 12:53:53,822 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/34790b1d2/be553d3a31bf4ada9bc5f67571371667 [2025-02-06 12:53:53,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:53:53,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:53:53,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:53:53,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:53:53,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:53:53,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:53:53" (1/1) ... [2025-02-06 12:53:53,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5867074e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:53, skipping insertion in model container [2025-02-06 12:53:53,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:53:53" (1/1) ... [2025-02-06 12:53:53,901 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:53:54,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:53:54,513 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:53:54,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:53:54,592 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:53:54,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54 WrapperNode [2025-02-06 12:53:54,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:53:54,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:53:54,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:53:54,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:53:54,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (1/1) ... [2025-02-06 12:53:54,609 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (1/1) ... [2025-02-06 12:53:54,620 INFO L138 Inliner]: procedures = 364, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-02-06 12:53:54,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:53:54,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:53:54,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:53:54,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:53:54,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (1/1) ... [2025-02-06 12:53:54,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (1/1) ... [2025-02-06 12:53:54,627 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (1/1) ... [2025-02-06 12:53:54,634 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-02-06 12:53:54,634 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (1/1) ... [2025-02-06 12:53:54,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (1/1) ... [2025-02-06 12:53:54,637 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (1/1) ... [2025-02-06 12:53:54,637 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (1/1) ... [2025-02-06 12:53:54,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (1/1) ... [2025-02-06 12:53:54,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (1/1) ... [2025-02-06 12:53:54,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:53:54,642 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:53:54,642 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:53:54,643 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:53:54,643 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (1/1) ... [2025-02-06 12:53:54,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:53:54,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:53:54,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:53:54,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:53:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 12:53:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 12:53:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:53:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2025-02-06 12:53:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2025-02-06 12:53:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:53:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 12:53:54,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:53:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:53:54,689 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 12:53:54,885 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:53:54,892 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:53:55,141 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:53:55,141 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:53:55,260 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:53:55,260 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:53:55,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:53:55 BoogieIcfgContainer [2025-02-06 12:53:55,261 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:53:55,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:53:55,262 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:53:55,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:53:55,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:53:53" (1/3) ... [2025-02-06 12:53:55,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e120690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:53:55, skipping insertion in model container [2025-02-06 12:53:55,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:53:54" (2/3) ... [2025-02-06 12:53:55,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e120690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:53:55, skipping insertion in model container [2025-02-06 12:53:55,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:53:55" (3/3) ... [2025-02-06 12:53:55,267 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2025-02-06 12:53:55,277 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:53:55,278 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pthread-demo-datarace-1.i that has 2 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-06 12:53:55,278 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:53:55,301 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-06 12:53:55,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 65 flow [2025-02-06 12:53:55,340 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-02-06 12:53:55,342 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 12:53:55,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 4/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2025-02-06 12:53:55,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 65 flow [2025-02-06 12:53:55,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 27 transitions, 60 flow [2025-02-06 12:53:55,350 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:53:55,356 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;@6b284102, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:53:55,357 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-06 12:53:55,362 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:53:55,362 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2025-02-06 12:53:55,362 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 12:53:55,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:53:55,363 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:53:55,363 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:53:55,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:53:55,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1242916975, now seen corresponding path program 1 times [2025-02-06 12:53:55,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:53:55,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300347062] [2025-02-06 12:53:55,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:53:55,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:53:55,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 12:53:55,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 12:53:55,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:53:55,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:53:55,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:53:55,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:53:55,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300347062] [2025-02-06 12:53:55,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300347062] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:53:55,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:53:55,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:53:55,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466059334] [2025-02-06 12:53:55,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:53:55,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:53:55,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:53:55,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:53:55,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:53:55,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-06 12:53:55,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 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) [2025-02-06 12:53:55,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:53:55,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-06 12:53:55,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:53:55,601 INFO L124 PetriNetUnfolderBase]: 61/135 cut-off events. [2025-02-06 12:53:55,601 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 12:53:55,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 135 events. 61/135 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 407 event pairs, 27 based on Foata normal form. 9/143 useless extension candidates. Maximal degree in co-relation 247. Up to 78 conditions per place. [2025-02-06 12:53:55,603 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 2 changer transitions 1/32 dead transitions. [2025-02-06 12:53:55,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 124 flow [2025-02-06 12:53:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:53:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:53:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-02-06 12:53:55,611 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2025-02-06 12:53:55,612 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2025-02-06 12:53:55,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 124 flow [2025-02-06 12:53:55,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:53:55,617 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 56 flow [2025-02-06 12:53:55,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2025-02-06 12:53:55,620 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2025-02-06 12:53:55,620 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 56 flow [2025-02-06 12:53:55,620 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) [2025-02-06 12:53:55,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:53:55,621 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:53:55,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:53:55,621 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:53:55,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:53:55,622 INFO L85 PathProgramCache]: Analyzing trace with hash 82828089, now seen corresponding path program 1 times [2025-02-06 12:53:55,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:53:55,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620052631] [2025-02-06 12:53:55,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:53:55,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:53:55,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 12:53:55,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 12:53:55,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:53:55,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:53:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 12:53:55,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:53:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620052631] [2025-02-06 12:53:55,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620052631] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:53:55,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:53:55,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:53:55,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369966765] [2025-02-06 12:53:55,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:53:55,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:53:55,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:53:55,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:53:55,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:53:55,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:53:55,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:55,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:53:55,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:53:55,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:53:55,785 INFO L124 PetriNetUnfolderBase]: 91/209 cut-off events. [2025-02-06 12:53:55,786 INFO L125 PetriNetUnfolderBase]: For 35/36 co-relation queries the response was YES. [2025-02-06 12:53:55,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 209 events. 91/209 cut-off events. For 35/36 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 741 event pairs, 46 based on Foata normal form. 9/217 useless extension candidates. Maximal degree in co-relation 123. Up to 114 conditions per place. [2025-02-06 12:53:55,788 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 25 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2025-02-06 12:53:55,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 138 flow [2025-02-06 12:53:55,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:53:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:53:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2025-02-06 12:53:55,789 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2025-02-06 12:53:55,789 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 50 transitions. [2025-02-06 12:53:55,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 138 flow [2025-02-06 12:53:55,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:53:55,790 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 66 flow [2025-02-06 12:53:55,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2025-02-06 12:53:55,791 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2025-02-06 12:53:55,791 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 66 flow [2025-02-06 12:53:55,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:55,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:53:55,791 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:53:55,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 12:53:55,792 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:53:55,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:53:55,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1170885477, now seen corresponding path program 1 times [2025-02-06 12:53:55,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:53:55,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243290530] [2025-02-06 12:53:55,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:53:55,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:53:55,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 12:53:55,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 12:53:55,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:53:55,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:53:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:53:55,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:53:55,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243290530] [2025-02-06 12:53:55,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243290530] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:53:55,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:53:55,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:53:55,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949215757] [2025-02-06 12:53:55,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:53:55,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:53:55,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:53:55,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:53:55,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:53:55,962 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:53:55,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:55,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:53:55,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:53:55,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:53:56,032 INFO L124 PetriNetUnfolderBase]: 59/154 cut-off events. [2025-02-06 12:53:56,033 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2025-02-06 12:53:56,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 154 events. 59/154 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 459 event pairs, 20 based on Foata normal form. 16/169 useless extension candidates. Maximal degree in co-relation 117. Up to 72 conditions per place. [2025-02-06 12:53:56,034 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 21 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2025-02-06 12:53:56,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 30 transitions, 146 flow [2025-02-06 12:53:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:53:56,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:53:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2025-02-06 12:53:56,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2025-02-06 12:53:56,035 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 66 flow. Second operand 3 states and 47 transitions. [2025-02-06 12:53:56,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 30 transitions, 146 flow [2025-02-06 12:53:56,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:53:56,036 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 72 flow [2025-02-06 12:53:56,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2025-02-06 12:53:56,037 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2025-02-06 12:53:56,037 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 72 flow [2025-02-06 12:53:56,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:56,037 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:53:56,038 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:53:56,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 12:53:56,038 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:53:56,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:53:56,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1801814091, now seen corresponding path program 2 times [2025-02-06 12:53:56,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:53:56,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644687839] [2025-02-06 12:53:56,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:53:56,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:53:56,046 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 1 equivalence classes. [2025-02-06 12:53:56,055 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 12:53:56,056 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 12:53:56,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:53:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:53:56,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:53:56,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644687839] [2025-02-06 12:53:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644687839] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:53:56,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:53:56,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:53:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848735299] [2025-02-06 12:53:56,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:53:56,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:53:56,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:53:56,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:53:56,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:53:56,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:53:56,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:56,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:53:56,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:53:56,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:53:56,229 INFO L124 PetriNetUnfolderBase]: 79/217 cut-off events. [2025-02-06 12:53:56,229 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2025-02-06 12:53:56,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 217 events. 79/217 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 722 event pairs, 18 based on Foata normal form. 9/226 useless extension candidates. Maximal degree in co-relation 180. Up to 90 conditions per place. [2025-02-06 12:53:56,232 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 34 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2025-02-06 12:53:56,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 42 transitions, 214 flow [2025-02-06 12:53:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:53:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 12:53:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2025-02-06 12:53:56,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2025-02-06 12:53:56,235 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 72 flow. Second operand 4 states and 67 transitions. [2025-02-06 12:53:56,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 42 transitions, 214 flow [2025-02-06 12:53:56,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:53:56,238 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 84 flow [2025-02-06 12:53:56,238 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2025-02-06 12:53:56,238 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2025-02-06 12:53:56,239 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 84 flow [2025-02-06 12:53:56,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:56,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:53:56,240 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:53:56,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 12:53:56,240 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:53:56,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:53:56,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1460213093, now seen corresponding path program 3 times [2025-02-06 12:53:56,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:53:56,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639635936] [2025-02-06 12:53:56,242 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 12:53:56,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:53:56,252 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-02-06 12:53:56,258 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 26 statements. [2025-02-06 12:53:56,258 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 12:53:56,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:53:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 12:53:56,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:53:56,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639635936] [2025-02-06 12:53:56,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639635936] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:53:56,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:53:56,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:53:56,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960545268] [2025-02-06 12:53:56,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:53:56,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:53:56,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:53:56,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:53:56,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:53:56,311 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-06 12:53:56,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:56,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:53:56,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-06 12:53:56,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:53:56,386 INFO L124 PetriNetUnfolderBase]: 125/328 cut-off events. [2025-02-06 12:53:56,386 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2025-02-06 12:53:56,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 328 events. 125/328 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1237 event pairs, 35 based on Foata normal form. 14/341 useless extension candidates. Maximal degree in co-relation 267. Up to 138 conditions per place. [2025-02-06 12:53:56,391 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 40 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2025-02-06 12:53:56,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 270 flow [2025-02-06 12:53:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:53:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 12:53:56,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2025-02-06 12:53:56,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2025-02-06 12:53:56,394 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 84 flow. Second operand 4 states and 66 transitions. [2025-02-06 12:53:56,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 270 flow [2025-02-06 12:53:56,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 252 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 12:53:56,396 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 94 flow [2025-02-06 12:53:56,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=94, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2025-02-06 12:53:56,397 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2025-02-06 12:53:56,398 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 94 flow [2025-02-06 12:53:56,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:56,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:53:56,398 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:53:56,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 12:53:56,399 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:53:56,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:53:56,399 INFO L85 PathProgramCache]: Analyzing trace with hash -832745584, now seen corresponding path program 4 times [2025-02-06 12:53:56,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:53:56,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872131255] [2025-02-06 12:53:56,399 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 12:53:56,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:53:56,412 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-02-06 12:53:56,427 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 12:53:56,428 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 12:53:56,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:53:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 12:53:56,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:53:56,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872131255] [2025-02-06 12:53:56,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872131255] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:53:56,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056723043] [2025-02-06 12:53:56,497 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 12:53:56,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:53:56,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:53:56,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:53:56,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 12:53:56,571 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-02-06 12:53:56,593 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 12:53:56,593 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 12:53:56,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:53:56,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:53:56,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:53:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 12:53:56,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:53:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 12:53:56,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056723043] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:53:56,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:53:56,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-06 12:53:56,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452797522] [2025-02-06 12:53:56,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:53:56,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:53:56,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:53:56,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:53:56,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:53:56,718 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-06 12:53:56,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 94 flow. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:56,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:53:56,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-06 12:53:56,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:53:56,876 INFO L124 PetriNetUnfolderBase]: 319/721 cut-off events. [2025-02-06 12:53:56,879 INFO L125 PetriNetUnfolderBase]: For 660/660 co-relation queries the response was YES. [2025-02-06 12:53:56,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 721 events. 319/721 cut-off events. For 660/660 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2858 event pairs, 20 based on Foata normal form. 56/777 useless extension candidates. Maximal degree in co-relation 857. Up to 132 conditions per place. [2025-02-06 12:53:56,882 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 86 selfloop transitions, 8 changer transitions 0/97 dead transitions. [2025-02-06 12:53:56,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 97 transitions, 556 flow [2025-02-06 12:53:56,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:53:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 12:53:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2025-02-06 12:53:56,886 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2025-02-06 12:53:56,886 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 94 flow. Second operand 8 states and 132 transitions. [2025-02-06 12:53:56,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 97 transitions, 556 flow [2025-02-06 12:53:56,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 97 transitions, 550 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 12:53:56,890 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 146 flow [2025-02-06 12:53:56,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=30, 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=146, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2025-02-06 12:53:56,891 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2025-02-06 12:53:56,891 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 146 flow [2025-02-06 12:53:56,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:56,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:53:56,891 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:53:56,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 12:53:57,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:53:57,092 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:53:57,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:53:57,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1933772302, now seen corresponding path program 5 times [2025-02-06 12:53:57,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:53:57,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270642489] [2025-02-06 12:53:57,093 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 12:53:57,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:53:57,107 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 7 equivalence classes. [2025-02-06 12:53:57,135 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 12:53:57,135 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-06 12:53:57,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:53:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-02-06 12:53:57,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:53:57,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270642489] [2025-02-06 12:53:57,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270642489] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:53:57,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117467670] [2025-02-06 12:53:57,228 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 12:53:57,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:53:57,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:53:57,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:53:57,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 12:53:57,291 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 7 equivalence classes. [2025-02-06 12:53:57,336 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 12:53:57,336 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-06 12:53:57,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:53:57,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:53:57,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:53:57,464 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 12:53:57,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:53:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 12:53:57,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117467670] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:53:57,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:53:57,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-06 12:53:57,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945476030] [2025-02-06 12:53:57,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:53:57,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 12:53:57,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:53:57,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 12:53:57,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342 [2025-02-06 12:53:57,663 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-06 12:53:57,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 146 flow. Second operand has 19 states, 19 states have (on average 11.157894736842104) internal successors, (212), 19 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:57,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:53:57,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-06 12:53:57,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:53:58,977 INFO L124 PetriNetUnfolderBase]: 867/1999 cut-off events. [2025-02-06 12:53:58,983 INFO L125 PetriNetUnfolderBase]: For 4048/4048 co-relation queries the response was YES. [2025-02-06 12:53:58,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6571 conditions, 1999 events. 867/1999 cut-off events. For 4048/4048 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 8906 event pairs, 10 based on Foata normal form. 217/2216 useless extension candidates. Maximal degree in co-relation 2142. Up to 365 conditions per place. [2025-02-06 12:53:59,008 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 443 selfloop transitions, 124 changer transitions 0/570 dead transitions. [2025-02-06 12:53:59,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 570 transitions, 3496 flow [2025-02-06 12:53:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-02-06 12:53:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-02-06 12:53:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 980 transitions. [2025-02-06 12:53:59,015 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5539853024307518 [2025-02-06 12:53:59,015 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 146 flow. Second operand 61 states and 980 transitions. [2025-02-06 12:53:59,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 570 transitions, 3496 flow [2025-02-06 12:53:59,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 570 transitions, 3288 flow, removed 96 selfloop flow, removed 2 redundant places. [2025-02-06 12:53:59,033 INFO L231 Difference]: Finished difference. Result has 142 places, 143 transitions, 1310 flow [2025-02-06 12:53:59,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=1310, PETRI_PLACES=142, PETRI_TRANSITIONS=143} [2025-02-06 12:53:59,038 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 115 predicate places. [2025-02-06 12:53:59,038 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 143 transitions, 1310 flow [2025-02-06 12:53:59,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.157894736842104) internal successors, (212), 19 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:59,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:53:59,039 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:53:59,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 12:53:59,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:53:59,241 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:53:59,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:53:59,241 INFO L85 PathProgramCache]: Analyzing trace with hash -144672042, now seen corresponding path program 6 times [2025-02-06 12:53:59,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:53:59,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485248963] [2025-02-06 12:53:59,242 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 12:53:59,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:53:59,256 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 96 statements into 15 equivalence classes. [2025-02-06 12:53:59,271 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 56 of 96 statements. [2025-02-06 12:53:59,272 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-06 12:53:59,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:53:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-02-06 12:53:59,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:53:59,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485248963] [2025-02-06 12:53:59,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485248963] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:53:59,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674572935] [2025-02-06 12:53:59,414 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 12:53:59,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:53:59,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:53:59,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:53:59,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 12:53:59,485 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 96 statements into 15 equivalence classes. [2025-02-06 12:53:59,514 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 56 of 96 statements. [2025-02-06 12:53:59,515 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-06 12:53:59,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:53:59,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:53:59,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:53:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-02-06 12:53:59,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:53:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-02-06 12:53:59,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674572935] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:53:59,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:53:59,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-02-06 12:53:59,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748060747] [2025-02-06 12:53:59,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:53:59,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 12:53:59,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:53:59,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 12:53:59,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2025-02-06 12:53:59,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-06 12:53:59,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 143 transitions, 1310 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:53:59,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:53:59,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-06 12:53:59,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:00,403 INFO L124 PetriNetUnfolderBase]: 1634/3863 cut-off events. [2025-02-06 12:54:00,403 INFO L125 PetriNetUnfolderBase]: For 77375/77507 co-relation queries the response was YES. [2025-02-06 12:54:00,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19256 conditions, 3863 events. 1634/3863 cut-off events. For 77375/77507 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 21473 event pairs, 240 based on Foata normal form. 335/4135 useless extension candidates. Maximal degree in co-relation 18227. Up to 645 conditions per place. [2025-02-06 12:54:00,445 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 200 selfloop transitions, 66 changer transitions 0/275 dead transitions. [2025-02-06 12:54:00,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 275 transitions, 2812 flow [2025-02-06 12:54:00,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:54:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 12:54:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2025-02-06 12:54:00,447 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5793103448275863 [2025-02-06 12:54:00,448 INFO L175 Difference]: Start difference. First operand has 142 places, 143 transitions, 1310 flow. Second operand 10 states and 168 transitions. [2025-02-06 12:54:00,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 275 transitions, 2812 flow [2025-02-06 12:54:00,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 275 transitions, 2602 flow, removed 30 selfloop flow, removed 7 redundant places. [2025-02-06 12:54:00,523 INFO L231 Difference]: Finished difference. Result has 150 places, 148 transitions, 1482 flow [2025-02-06 12:54:00,523 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1482, PETRI_PLACES=150, PETRI_TRANSITIONS=148} [2025-02-06 12:54:00,523 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 123 predicate places. [2025-02-06 12:54:00,523 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 148 transitions, 1482 flow [2025-02-06 12:54:00,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:00,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:00,524 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:54:00,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 12:54:00,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:54:00,725 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:54:00,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:00,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1287909646, now seen corresponding path program 7 times [2025-02-06 12:54:00,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:00,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978765827] [2025-02-06 12:54:00,726 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 12:54:00,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:00,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-06 12:54:00,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-06 12:54:00,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:54:00,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2025-02-06 12:54:01,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978765827] [2025-02-06 12:54:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978765827] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:54:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534262097] [2025-02-06 12:54:01,253 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 12:54:01,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:54:01,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:54:01,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:54:01,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 12:54:01,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-06 12:54:01,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-06 12:54:01,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:54:01,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:01,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 12:54:01,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:54:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2025-02-06 12:54:01,630 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:54:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2025-02-06 12:54:02,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534262097] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:54:02,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:54:02,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2025-02-06 12:54:02,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248904282] [2025-02-06 12:54:02,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:54:02,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 12:54:02,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:02,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 12:54:02,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-02-06 12:54:02,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-06 12:54:02,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 148 transitions, 1482 flow. Second operand has 23 states, 23 states have (on average 11.304347826086957) internal successors, (260), 23 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:02,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:02,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-06 12:54:02,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:03,258 INFO L124 PetriNetUnfolderBase]: 2225/5233 cut-off events. [2025-02-06 12:54:03,259 INFO L125 PetriNetUnfolderBase]: For 288000/288000 co-relation queries the response was YES. [2025-02-06 12:54:03,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31696 conditions, 5233 events. 2225/5233 cut-off events. For 288000/288000 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 29210 event pairs, 78 based on Foata normal form. 210/5442 useless extension candidates. Maximal degree in co-relation 29046. Up to 940 conditions per place. [2025-02-06 12:54:03,358 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 401 selfloop transitions, 88 changer transitions 0/493 dead transitions. [2025-02-06 12:54:03,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 493 transitions, 8746 flow [2025-02-06 12:54:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 12:54:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-06 12:54:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 372 transitions. [2025-02-06 12:54:03,361 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5830721003134797 [2025-02-06 12:54:03,361 INFO L175 Difference]: Start difference. First operand has 150 places, 148 transitions, 1482 flow. Second operand 22 states and 372 transitions. [2025-02-06 12:54:03,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 493 transitions, 8746 flow [2025-02-06 12:54:03,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 493 transitions, 6904 flow, removed 840 selfloop flow, removed 3 redundant places. [2025-02-06 12:54:03,526 INFO L231 Difference]: Finished difference. Result has 175 places, 176 transitions, 1852 flow [2025-02-06 12:54:03,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1852, PETRI_PLACES=175, PETRI_TRANSITIONS=176} [2025-02-06 12:54:03,527 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 148 predicate places. [2025-02-06 12:54:03,527 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 176 transitions, 1852 flow [2025-02-06 12:54:03,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.304347826086957) internal successors, (260), 23 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:03,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:03,527 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:54:03,535 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 [2025-02-06 12:54:03,728 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,SelfDestructingSolverStorable8 [2025-02-06 12:54:03,728 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:54:03,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash 703514130, now seen corresponding path program 8 times [2025-02-06 12:54:03,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:03,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317793228] [2025-02-06 12:54:03,729 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:54:03,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:03,765 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 151 statements into 2 equivalence classes. [2025-02-06 12:54:03,815 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 151 of 151 statements. [2025-02-06 12:54:03,816 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:54:03,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-02-06 12:54:04,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:04,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317793228] [2025-02-06 12:54:04,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317793228] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:54:04,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136692831] [2025-02-06 12:54:04,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:54:04,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:54:04,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:54:04,342 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) [2025-02-06 12:54:04,343 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 [2025-02-06 12:54:04,429 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 151 statements into 2 equivalence classes. [2025-02-06 12:54:04,485 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 151 of 151 statements. [2025-02-06 12:54:04,485 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:54:04,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:04,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 12:54:04,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:54:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-02-06 12:54:04,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:54:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-02-06 12:54:04,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136692831] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:54:04,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:54:04,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2025-02-06 12:54:04,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160468233] [2025-02-06 12:54:04,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:54:04,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 12:54:04,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:04,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 12:54:04,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2025-02-06 12:54:04,844 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-06 12:54:04,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 176 transitions, 1852 flow. Second operand has 21 states, 21 states have (on average 11.761904761904763) internal successors, (247), 21 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:04,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:04,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-06 12:54:04,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:07,145 INFO L124 PetriNetUnfolderBase]: 4831/11343 cut-off events. [2025-02-06 12:54:07,146 INFO L125 PetriNetUnfolderBase]: For 223972/224296 co-relation queries the response was YES. [2025-02-06 12:54:07,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56778 conditions, 11343 events. 4831/11343 cut-off events. For 223972/224296 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 73546 event pairs, 390 based on Foata normal form. 1008/12181 useless extension candidates. Maximal degree in co-relation 52092. Up to 1953 conditions per place. [2025-02-06 12:54:07,231 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 534 selfloop transitions, 76 changer transitions 0/623 dead transitions. [2025-02-06 12:54:07,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 623 transitions, 7340 flow [2025-02-06 12:54:07,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 12:54:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-06 12:54:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 343 transitions. [2025-02-06 12:54:07,233 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5913793103448276 [2025-02-06 12:54:07,233 INFO L175 Difference]: Start difference. First operand has 175 places, 176 transitions, 1852 flow. Second operand 20 states and 343 transitions. [2025-02-06 12:54:07,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 623 transitions, 7340 flow [2025-02-06 12:54:07,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 623 transitions, 6846 flow, removed 0 selfloop flow, removed 13 redundant places. [2025-02-06 12:54:07,458 INFO L231 Difference]: Finished difference. Result has 192 places, 187 transitions, 2206 flow [2025-02-06 12:54:07,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2206, PETRI_PLACES=192, PETRI_TRANSITIONS=187} [2025-02-06 12:54:07,459 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 165 predicate places. [2025-02-06 12:54:07,459 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 187 transitions, 2206 flow [2025-02-06 12:54:07,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.761904761904763) internal successors, (247), 21 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:07,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:07,460 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:54:07,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 12:54:07,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 12:54:07,661 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:54:07,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:07,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1796628136, now seen corresponding path program 9 times [2025-02-06 12:54:07,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:07,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781252506] [2025-02-06 12:54:07,662 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 12:54:07,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:07,682 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 201 statements into 19 equivalence classes. [2025-02-06 12:54:07,788 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 201 of 201 statements. [2025-02-06 12:54:07,789 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-02-06 12:54:07,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 817 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2025-02-06 12:54:08,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:08,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781252506] [2025-02-06 12:54:08,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781252506] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:54:08,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990215643] [2025-02-06 12:54:08,549 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 12:54:08,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:54:08,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:54:08,551 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) [2025-02-06 12:54:08,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 12:54:08,661 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 201 statements into 19 equivalence classes. [2025-02-06 12:54:09,220 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 201 of 201 statements. [2025-02-06 12:54:09,220 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-02-06 12:54:09,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:09,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 12:54:09,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:54:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 817 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2025-02-06 12:54:09,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:54:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 817 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2025-02-06 12:54:09,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990215643] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:54:09,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:54:09,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2025-02-06 12:54:09,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428704723] [2025-02-06 12:54:09,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:54:09,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 12:54:09,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:09,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 12:54:09,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-02-06 12:54:09,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-06 12:54:09,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 187 transitions, 2206 flow. Second operand has 23 states, 23 states have (on average 12.521739130434783) internal successors, (288), 23 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:09,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:09,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-06 12:54:09,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:12,050 INFO L124 PetriNetUnfolderBase]: 5339/12529 cut-off events. [2025-02-06 12:54:12,054 INFO L125 PetriNetUnfolderBase]: For 257061/257417 co-relation queries the response was YES. [2025-02-06 12:54:12,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66833 conditions, 12529 events. 5339/12529 cut-off events. For 257061/257417 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 82258 event pairs, 408 based on Foata normal form. 292/12633 useless extension candidates. Maximal degree in co-relation 60898. Up to 2163 conditions per place. [2025-02-06 12:54:12,220 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 590 selfloop transitions, 78 changer transitions 0/681 dead transitions. [2025-02-06 12:54:12,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 681 transitions, 7736 flow [2025-02-06 12:54:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 12:54:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-06 12:54:12,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 369 transitions. [2025-02-06 12:54:12,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5783699059561128 [2025-02-06 12:54:12,222 INFO L175 Difference]: Start difference. First operand has 192 places, 187 transitions, 2206 flow. Second operand 22 states and 369 transitions. [2025-02-06 12:54:12,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 681 transitions, 7736 flow [2025-02-06 12:54:12,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 681 transitions, 7624 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-06 12:54:12,530 INFO L231 Difference]: Finished difference. Result has 209 places, 190 transitions, 2344 flow [2025-02-06 12:54:12,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2344, PETRI_PLACES=209, PETRI_TRANSITIONS=190} [2025-02-06 12:54:12,531 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 182 predicate places. [2025-02-06 12:54:12,531 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 190 transitions, 2344 flow [2025-02-06 12:54:12,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.521739130434783) internal successors, (288), 23 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:12,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:12,532 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:54:12,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 12:54:12,735 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,SelfDestructingSolverStorable10 [2025-02-06 12:54:12,736 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:54:12,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:12,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2133380664, now seen corresponding path program 10 times [2025-02-06 12:54:12,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:12,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059219255] [2025-02-06 12:54:12,737 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 12:54:12,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:12,770 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 211 statements into 2 equivalence classes. [2025-02-06 12:54:12,819 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 211 of 211 statements. [2025-02-06 12:54:12,819 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 12:54:12,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:15,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 0 proven. 1537 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:54:15,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:15,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059219255] [2025-02-06 12:54:15,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059219255] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:54:15,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831432432] [2025-02-06 12:54:15,290 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 12:54:15,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:54:15,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:54:15,293 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) [2025-02-06 12:54:15,293 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 [2025-02-06 12:54:15,398 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 211 statements into 2 equivalence classes. [2025-02-06 12:54:15,508 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 211 of 211 statements. [2025-02-06 12:54:15,508 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 12:54:15,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:15,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 125 conjuncts are in the unsatisfiable core [2025-02-06 12:54:15,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:54:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 0 proven. 1537 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:54:15,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:54:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 0 proven. 1537 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:54:16,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831432432] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:54:16,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:54:16,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2025-02-06 12:54:16,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721965075] [2025-02-06 12:54:16,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:54:16,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-06 12:54:16,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:16,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-06 12:54:16,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2025-02-06 12:54:16,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-06 12:54:16,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 190 transitions, 2344 flow. Second operand has 45 states, 45 states have (on average 10.777777777777779) internal successors, (485), 45 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:16,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:16,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-06 12:54:16,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:27,822 INFO L124 PetriNetUnfolderBase]: 8720/22941 cut-off events. [2025-02-06 12:54:27,827 INFO L125 PetriNetUnfolderBase]: For 1044025/1046819 co-relation queries the response was YES. [2025-02-06 12:54:28,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171773 conditions, 22941 events. 8720/22941 cut-off events. For 1044025/1046819 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 184015 event pairs, 1649 based on Foata normal form. 335/22878 useless extension candidates. Maximal degree in co-relation 153381. Up to 4888 conditions per place. [2025-02-06 12:54:28,446 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 1843 selfloop transitions, 83 changer transitions 2/1945 dead transitions. [2025-02-06 12:54:28,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 1945 transitions, 32952 flow [2025-02-06 12:54:28,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-02-06 12:54:28,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-02-06 12:54:28,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 754 transitions. [2025-02-06 12:54:28,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-02-06 12:54:28,451 INFO L175 Difference]: Start difference. First operand has 209 places, 190 transitions, 2344 flow. Second operand 44 states and 754 transitions. [2025-02-06 12:54:28,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 1945 transitions, 32952 flow [2025-02-06 12:54:29,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1945 transitions, 31531 flow, removed 0 selfloop flow, removed 17 redundant places. [2025-02-06 12:54:29,930 INFO L231 Difference]: Finished difference. Result has 237 places, 272 transitions, 2554 flow [2025-02-06 12:54:29,931 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2554, PETRI_PLACES=237, PETRI_TRANSITIONS=272} [2025-02-06 12:54:29,931 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 210 predicate places. [2025-02-06 12:54:29,931 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 272 transitions, 2554 flow [2025-02-06 12:54:29,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.777777777777779) internal successors, (485), 45 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:29,932 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:29,932 INFO L206 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:54:29,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 12:54:30,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:54:30,133 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:54:30,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:30,134 INFO L85 PathProgramCache]: Analyzing trace with hash 813185072, now seen corresponding path program 11 times [2025-02-06 12:54:30,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:30,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734252406] [2025-02-06 12:54:30,134 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 12:54:30,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:30,167 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 216 statements into 21 equivalence classes. [2025-02-06 12:54:30,242 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) and asserted 216 of 216 statements. [2025-02-06 12:54:30,242 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2025-02-06 12:54:30,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 1733 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2025-02-06 12:54:30,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:30,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734252406] [2025-02-06 12:54:30,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734252406] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:54:30,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:54:30,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2025-02-06 12:54:30,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869475773] [2025-02-06 12:54:30,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:54:30,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 12:54:30,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:30,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 12:54:30,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-02-06 12:54:30,865 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-06 12:54:30,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 272 transitions, 2554 flow. Second operand has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:30,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:30,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-06 12:54:30,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:35,234 INFO L124 PetriNetUnfolderBase]: 8337/19484 cut-off events. [2025-02-06 12:54:35,234 INFO L125 PetriNetUnfolderBase]: For 407026/409970 co-relation queries the response was YES. [2025-02-06 12:54:35,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112673 conditions, 19484 events. 8337/19484 cut-off events. For 407026/409970 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 142097 event pairs, 535 based on Foata normal form. 411/19459 useless extension candidates. Maximal degree in co-relation 112584. Up to 3296 conditions per place. [2025-02-06 12:54:35,510 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 1936 selfloop transitions, 77 changer transitions 0/2026 dead transitions. [2025-02-06 12:54:35,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 2026 transitions, 16042 flow [2025-02-06 12:54:35,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 12:54:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-06 12:54:35,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 379 transitions. [2025-02-06 12:54:35,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.568215892053973 [2025-02-06 12:54:35,512 INFO L175 Difference]: Start difference. First operand has 237 places, 272 transitions, 2554 flow. Second operand 23 states and 379 transitions. [2025-02-06 12:54:35,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 2026 transitions, 16042 flow [2025-02-06 12:54:36,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 2026 transitions, 16024 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 12:54:36,410 INFO L231 Difference]: Finished difference. Result has 256 places, 271 transitions, 2676 flow [2025-02-06 12:54:36,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2676, PETRI_PLACES=256, PETRI_TRANSITIONS=271} [2025-02-06 12:54:36,411 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 229 predicate places. [2025-02-06 12:54:36,411 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 271 transitions, 2676 flow [2025-02-06 12:54:36,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:36,412 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:36,412 INFO L206 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:54:36,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 12:54:36,412 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:54:36,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:36,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1538702711, now seen corresponding path program 12 times [2025-02-06 12:54:36,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:36,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879713121] [2025-02-06 12:54:36,413 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 12:54:36,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:36,441 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 216 statements into 22 equivalence classes. [2025-02-06 12:54:36,559 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 216 of 216 statements. [2025-02-06 12:54:36,559 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-02-06 12:54:36,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 96 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-02-06 12:54:37,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879713121] [2025-02-06 12:54:37,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879713121] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:54:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366599800] [2025-02-06 12:54:37,306 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 12:54:37,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:54:37,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:54:37,310 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:54:37,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 12:54:37,455 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 216 statements into 22 equivalence classes. [2025-02-06 12:54:37,944 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 216 of 216 statements. [2025-02-06 12:54:37,944 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-02-06 12:54:37,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:37,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 12:54:37,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:54:38,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-02-06 12:54:38,064 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:54:38,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366599800] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:54:38,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 12:54:38,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2025-02-06 12:54:38,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475249109] [2025-02-06 12:54:38,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:54:38,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 12:54:38,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:38,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 12:54:38,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2025-02-06 12:54:38,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-06 12:54:38,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 271 transitions, 2676 flow. Second operand has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:38,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:38,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-06 12:54:38,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:41,161 INFO L124 PetriNetUnfolderBase]: 5164/12142 cut-off events. [2025-02-06 12:54:41,162 INFO L125 PetriNetUnfolderBase]: For 334265/334265 co-relation queries the response was YES. [2025-02-06 12:54:41,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76060 conditions, 12142 events. 5164/12142 cut-off events. For 334265/334265 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 82107 event pairs, 29 based on Foata normal form. 83/12225 useless extension candidates. Maximal degree in co-relation 75511. Up to 2556 conditions per place. [2025-02-06 12:54:41,298 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 0 selfloop transitions, 0 changer transitions 1601/1601 dead transitions. [2025-02-06 12:54:41,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 1601 transitions, 22221 flow [2025-02-06 12:54:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 12:54:41,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-06 12:54:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 376 transitions. [2025-02-06 12:54:41,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5637181409295352 [2025-02-06 12:54:41,302 INFO L175 Difference]: Start difference. First operand has 256 places, 271 transitions, 2676 flow. Second operand 23 states and 376 transitions. [2025-02-06 12:54:41,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 1601 transitions, 22221 flow [2025-02-06 12:54:41,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 1601 transitions, 21259 flow, removed 0 selfloop flow, removed 24 redundant places. [2025-02-06 12:54:41,958 INFO L231 Difference]: Finished difference. Result has 250 places, 0 transitions, 0 flow [2025-02-06 12:54:41,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=250, PETRI_TRANSITIONS=0} [2025-02-06 12:54:41,963 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 223 predicate places. [2025-02-06 12:54:41,963 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 0 transitions, 0 flow [2025-02-06 12:54:41,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:41,965 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 3 remaining) [2025-02-06 12:54:41,965 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 3 remaining) [2025-02-06 12:54:41,965 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-02-06 12:54:41,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 12:54:42,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:54:42,171 INFO L422 BasicCegarLoop]: Path program histogram: [12, 1, 1] [2025-02-06 12:54:42,175 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 12:54:42,176 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 12:54:42,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 12:54:42 BasicIcfg [2025-02-06 12:54:42,183 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 12:54:42,184 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 12:54:42,184 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 12:54:42,184 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 12:54:42,185 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:53:55" (3/4) ... [2025-02-06 12:54:42,187 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 12:54:42,191 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread_function_mutex [2025-02-06 12:54:42,200 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2025-02-06 12:54:42,201 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2025-02-06 12:54:42,201 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-02-06 12:54:42,201 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-06 12:54:42,277 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 12:54:42,277 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 12:54:42,277 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 12:54:42,278 INFO L158 Benchmark]: Toolchain (without parser) took 48452.93ms. Allocated memory was 201.3MB in the beginning and 6.2GB in the end (delta: 6.0GB). Free memory was 156.9MB in the beginning and 4.0GB in the end (delta: -3.8GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2025-02-06 12:54:42,278 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 218.1MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:54:42,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 762.09ms. Allocated memory is still 201.3MB. Free memory was 156.9MB in the beginning and 119.6MB in the end (delta: 37.4MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-06 12:54:42,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.97ms. Allocated memory is still 201.3MB. Free memory was 119.6MB in the beginning and 117.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:54:42,278 INFO L158 Benchmark]: Boogie Preprocessor took 19.36ms. Allocated memory is still 201.3MB. Free memory was 117.4MB in the beginning and 116.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:54:42,279 INFO L158 Benchmark]: IcfgBuilder took 618.41ms. Allocated memory is still 201.3MB. Free memory was 116.1MB in the beginning and 93.8MB in the end (delta: 22.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 12:54:42,279 INFO L158 Benchmark]: TraceAbstraction took 46921.04ms. Allocated memory was 201.3MB in the beginning and 6.2GB in the end (delta: 6.0GB). Free memory was 93.2MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2025-02-06 12:54:42,279 INFO L158 Benchmark]: Witness Printer took 93.26ms. Allocated memory is still 6.2GB. Free memory was 4.0GB in the beginning and 4.0GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:54:42,281 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 218.1MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 762.09ms. Allocated memory is still 201.3MB. Free memory was 156.9MB in the beginning and 119.6MB in the end (delta: 37.4MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.97ms. Allocated memory is still 201.3MB. Free memory was 119.6MB in the beginning and 117.4MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.36ms. Allocated memory is still 201.3MB. Free memory was 117.4MB in the beginning and 116.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 618.41ms. Allocated memory is still 201.3MB. Free memory was 116.1MB in the beginning and 93.8MB in the end (delta: 22.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 46921.04ms. Allocated memory was 201.3MB in the beginning and 6.2GB in the end (delta: 6.0GB). Free memory was 93.2MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Witness Printer took 93.26ms. Allocated memory is still 6.2GB. Free memory was 4.0GB in the beginning and 4.0GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1334]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 46.9s, OverallIterations: 14, TraceHistogramMax: 21, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 33.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2071 SdHoareTripleChecker+Valid, 8.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2053 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 6.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21784 IncrementalHoareTripleChecker+Invalid, 21839 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 4 mSDtfsCounter, 21784 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2181 GetRequests, 1923 SyntacticMatches, 29 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1409 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2676occurred in iteration=13, InterpolantAutomatonStates: 250, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 2467 NumberOfCodeBlocks, 2382 NumberOfCodeBlocksAsserted, 150 NumberOfCheckSat, 3300 ConstructedInterpolants, 0 QuantifiedInterpolants, 7493 SizeOfPredicates, 22 NumberOfNonLiveVariables, 4412 ConjunctsInSsa, 210 ConjunctsInUnsatCore, 29 InterpolantComputations, 7 PerfectInterpolantSequences, 12690/21934 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 12:54:42,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE