./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 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-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-?-48c9605-m [2025-02-08 08:28:45,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:28:45,728 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:28:45,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:28:45,731 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:28:45,757 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:28:45,758 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:28:45,758 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:28:45,758 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:28:45,758 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:28:45,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:28:45,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:28:45,759 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:28:45,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:28:45,759 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:28:45,760 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:28:45,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:28:45,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:28:45,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:28:45,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:28:45,760 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:28:45,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:28:45,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:28:45,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:28:45,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:28:45,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:28:45,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:28:45,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:28:45,760 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 [2025-02-08 08:28:45,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:28:45,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:28:45,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:28:45,999 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:28:45,999 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:28:46,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2025-02-08 08:28:47,154 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d4cafdd42/57b6c58fd68e40389b258b1c1e43e76f/FLAG3407a9b66 [2025-02-08 08:28:47,470 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:28:47,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2025-02-08 08:28:47,483 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d4cafdd42/57b6c58fd68e40389b258b1c1e43e76f/FLAG3407a9b66 [2025-02-08 08:28:47,722 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d4cafdd42/57b6c58fd68e40389b258b1c1e43e76f [2025-02-08 08:28:47,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:28:47,727 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:28:47,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:28:47,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:28:47,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:28:47,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:28:47" (1/1) ... [2025-02-08 08:28:47,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1299b72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:47, skipping insertion in model container [2025-02-08 08:28:47,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:28:47" (1/1) ... [2025-02-08 08:28:47,765 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:28:48,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:28:48,160 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:28:48,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:28:48,241 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:28:48,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48 WrapperNode [2025-02-08 08:28:48,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:28:48,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:28:48,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:28:48,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:28:48,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,266 INFO L138 Inliner]: procedures = 364, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-02-08 08:28:48,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:28:48,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:28:48,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:28:48,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:28:48,273 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,275 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,286 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]. [2025-02-08 08:28:48,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,298 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:28:48,303 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:28:48,303 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:28:48,303 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:28:48,303 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (1/1) ... [2025-02-08 08:28:48,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:28:48,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:48,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:28:48,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:28:48,348 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 08:28:48,348 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 08:28:48,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:28:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2025-02-08 08:28:48,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2025-02-08 08:28:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:28:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 08:28:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:28:48,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:28:48,350 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:28:48,461 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:28:48,463 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:28:48,602 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:28:48,602 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:28:48,670 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:28:48,671 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:28:48,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:28:48 BoogieIcfgContainer [2025-02-08 08:28:48,671 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:28:48,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:28:48,673 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:28:48,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:28:48,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:28:47" (1/3) ... [2025-02-08 08:28:48,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a3eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:28:48, skipping insertion in model container [2025-02-08 08:28:48,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:28:48" (2/3) ... [2025-02-08 08:28:48,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a3eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:28:48, skipping insertion in model container [2025-02-08 08:28:48,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:28:48" (3/3) ... [2025-02-08 08:28:48,681 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2025-02-08 08:28:48,692 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:28:48,693 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. [2025-02-08 08:28:48,694 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:28:48,729 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-08 08:28:48,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 65 flow [2025-02-08 08:28:48,788 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-02-08 08:28:48,791 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:28:48,793 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. [2025-02-08 08:28:48,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 65 flow [2025-02-08 08:28:48,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 27 transitions, 60 flow [2025-02-08 08:28:48,803 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:28:48,811 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;@62ab8880, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:28:48,812 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-08 08:28:48,819 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:28:48,819 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2025-02-08 08:28:48,819 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:28:48,819 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:48,819 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:28:48,820 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:48,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2019308081, now seen corresponding path program 1 times [2025-02-08 08:28:48,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:48,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005582040] [2025-02-08 08:28:48,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:28:48,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:48,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 08:28:48,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 08:28:48,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:28:48,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:28:49,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:49,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005582040] [2025-02-08 08:28:49,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005582040] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:28:49,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:28:49,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:28:49,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555725332] [2025-02-08 08:28:49,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:28:49,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:28:49,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:49,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:28:49,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:28:49,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 08:28:49,049 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) [2025-02-08 08:28:49,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:49,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 08:28:49,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:49,127 INFO L124 PetriNetUnfolderBase]: 61/135 cut-off events. [2025-02-08 08:28:49,127 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:28:49,128 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 406 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. [2025-02-08 08:28:49,130 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 2 changer transitions 1/32 dead transitions. [2025-02-08 08:28:49,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 124 flow [2025-02-08 08:28:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:28:49,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:28:49,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-02-08 08:28:49,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2025-02-08 08:28:49,142 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2025-02-08 08:28:49,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 124 flow [2025-02-08 08:28:49,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:28:49,149 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 56 flow [2025-02-08 08:28:49,153 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} [2025-02-08 08:28:49,156 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2025-02-08 08:28:49,157 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 56 flow [2025-02-08 08:28:49,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:28:49,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:49,158 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:28:49,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:28:49,159 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:49,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:49,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2074057066, now seen corresponding path program 1 times [2025-02-08 08:28:49,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:49,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434819497] [2025-02-08 08:28:49,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:28:49,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:49,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 08:28:49,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 08:28:49,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:28:49,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 08:28:49,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:49,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434819497] [2025-02-08 08:28:49,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434819497] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:28:49,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:28:49,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:28:49,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113368269] [2025-02-08 08:28:49,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:28:49,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:28:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:49,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:28:49,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:28:49,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:28:49,265 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) [2025-02-08 08:28:49,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:49,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:28:49,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:49,340 INFO L124 PetriNetUnfolderBase]: 91/209 cut-off events. [2025-02-08 08:28:49,340 INFO L125 PetriNetUnfolderBase]: For 35/36 co-relation queries the response was YES. [2025-02-08 08:28:49,341 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 745 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. [2025-02-08 08:28:49,342 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 25 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2025-02-08 08:28:49,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 138 flow [2025-02-08 08:28:49,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:28:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:28:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2025-02-08 08:28:49,343 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2025-02-08 08:28:49,343 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 50 transitions. [2025-02-08 08:28:49,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 138 flow [2025-02-08 08:28:49,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:28:49,348 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 66 flow [2025-02-08 08:28:49,348 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} [2025-02-08 08:28:49,349 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2025-02-08 08:28:49,349 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 66 flow [2025-02-08 08:28:49,349 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) [2025-02-08 08:28:49,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:49,349 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] [2025-02-08 08:28:49,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:28:49,349 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:49,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:49,350 INFO L85 PathProgramCache]: Analyzing trace with hash 844364539, now seen corresponding path program 1 times [2025-02-08 08:28:49,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:49,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167174574] [2025-02-08 08:28:49,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:28:49,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:49,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 08:28:49,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 08:28:49,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:28:49,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:28:49,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:49,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167174574] [2025-02-08 08:28:49,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167174574] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:28:49,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:28:49,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:28:49,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526749372] [2025-02-08 08:28:49,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:28:49,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:28:49,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:49,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:28:49,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:28:49,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:28:49,447 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) [2025-02-08 08:28:49,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:49,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:28:49,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:49,512 INFO L124 PetriNetUnfolderBase]: 59/154 cut-off events. [2025-02-08 08:28:49,512 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2025-02-08 08:28:49,514 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 468 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. [2025-02-08 08:28:49,516 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 21 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2025-02-08 08:28:49,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 30 transitions, 146 flow [2025-02-08 08:28:49,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:28:49,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:28:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2025-02-08 08:28:49,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2025-02-08 08:28:49,517 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 66 flow. Second operand 3 states and 47 transitions. [2025-02-08 08:28:49,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 30 transitions, 146 flow [2025-02-08 08:28:49,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:28:49,518 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 72 flow [2025-02-08 08:28:49,519 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} [2025-02-08 08:28:49,519 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2025-02-08 08:28:49,519 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 72 flow [2025-02-08 08:28:49,519 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) [2025-02-08 08:28:49,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:49,520 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] [2025-02-08 08:28:49,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:28:49,520 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:49,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:49,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1973803213, now seen corresponding path program 2 times [2025-02-08 08:28:49,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:49,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751014265] [2025-02-08 08:28:49,521 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:28:49,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:49,528 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 1 equivalence classes. [2025-02-08 08:28:49,538 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 08:28:49,539 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 08:28:49,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:28:49,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:49,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751014265] [2025-02-08 08:28:49,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751014265] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:28:49,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:28:49,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:28:49,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54660774] [2025-02-08 08:28:49,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:28:49,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:28:49,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:49,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:28:49,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:28:49,607 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-08 08:28:49,608 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) [2025-02-08 08:28:49,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:49,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-08 08:28:49,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:49,680 INFO L124 PetriNetUnfolderBase]: 79/217 cut-off events. [2025-02-08 08:28:49,680 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2025-02-08 08:28:49,680 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 716 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. [2025-02-08 08:28:49,681 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 34 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2025-02-08 08:28:49,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 42 transitions, 214 flow [2025-02-08 08:28:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:28:49,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:28:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2025-02-08 08:28:49,684 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2025-02-08 08:28:49,684 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 72 flow. Second operand 4 states and 67 transitions. [2025-02-08 08:28:49,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 42 transitions, 214 flow [2025-02-08 08:28:49,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:28:49,685 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 84 flow [2025-02-08 08:28:49,685 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} [2025-02-08 08:28:49,685 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2025-02-08 08:28:49,685 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 84 flow [2025-02-08 08:28:49,686 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) [2025-02-08 08:28:49,686 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:49,686 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] [2025-02-08 08:28:49,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:28:49,686 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:49,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:49,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1044813738, now seen corresponding path program 3 times [2025-02-08 08:28:49,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:49,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322988671] [2025-02-08 08:28:49,686 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:28:49,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:49,699 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-02-08 08:28:49,706 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 26 statements. [2025-02-08 08:28:49,706 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 08:28:49,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 08:28:49,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:49,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322988671] [2025-02-08 08:28:49,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322988671] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:28:49,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:28:49,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:28:49,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231170801] [2025-02-08 08:28:49,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:28:49,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:28:49,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:49,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:28:49,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:28:49,762 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 08:28:49,762 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) [2025-02-08 08:28:49,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:49,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 08:28:49,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:49,833 INFO L124 PetriNetUnfolderBase]: 125/328 cut-off events. [2025-02-08 08:28:49,833 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2025-02-08 08:28:49,834 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 1233 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. [2025-02-08 08:28:49,837 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 40 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2025-02-08 08:28:49,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 270 flow [2025-02-08 08:28:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 08:28:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 08:28:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2025-02-08 08:28:49,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2025-02-08 08:28:49,840 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 84 flow. Second operand 4 states and 66 transitions. [2025-02-08 08:28:49,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 270 flow [2025-02-08 08:28:49,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 252 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 08:28:49,843 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 94 flow [2025-02-08 08:28:49,843 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} [2025-02-08 08:28:49,844 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2025-02-08 08:28:49,845 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 94 flow [2025-02-08 08:28:49,845 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) [2025-02-08 08:28:49,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:49,845 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] [2025-02-08 08:28:49,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 08:28:49,845 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:49,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:49,846 INFO L85 PathProgramCache]: Analyzing trace with hash -669138277, now seen corresponding path program 4 times [2025-02-08 08:28:49,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:49,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531241567] [2025-02-08 08:28:49,846 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:28:49,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:49,857 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-02-08 08:28:49,872 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 08:28:49,873 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:28:49,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 08:28:49,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:49,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531241567] [2025-02-08 08:28:49,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531241567] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:28:49,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012277689] [2025-02-08 08:28:49,929 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:28:49,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:49,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:49,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:28:49,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:28:49,983 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-02-08 08:28:50,001 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-08 08:28:50,001 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:28:50,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:50,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:28:50,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:28:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 08:28:50,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:28:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 08:28:50,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012277689] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:28:50,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:28:50,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-08 08:28:50,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325196757] [2025-02-08 08:28:50,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:28:50,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 08:28:50,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:50,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 08:28:50,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:28:50,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-08 08:28:50,127 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) [2025-02-08 08:28:50,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:50,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-08 08:28:50,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:50,306 INFO L124 PetriNetUnfolderBase]: 319/721 cut-off events. [2025-02-08 08:28:50,306 INFO L125 PetriNetUnfolderBase]: For 660/660 co-relation queries the response was YES. [2025-02-08 08:28:50,309 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 2868 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. [2025-02-08 08:28:50,312 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 86 selfloop transitions, 8 changer transitions 0/97 dead transitions. [2025-02-08 08:28:50,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 97 transitions, 556 flow [2025-02-08 08:28:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:28:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:28:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2025-02-08 08:28:50,313 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2025-02-08 08:28:50,313 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 94 flow. Second operand 8 states and 132 transitions. [2025-02-08 08:28:50,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 97 transitions, 556 flow [2025-02-08 08:28:50,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 97 transitions, 550 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-08 08:28:50,316 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 146 flow [2025-02-08 08:28:50,316 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} [2025-02-08 08:28:50,320 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2025-02-08 08:28:50,320 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 146 flow [2025-02-08 08:28:50,320 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) [2025-02-08 08:28:50,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:50,320 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] [2025-02-08 08:28:50,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 08:28:50,521 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 [2025-02-08 08:28:50,521 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:50,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash 20497141, now seen corresponding path program 5 times [2025-02-08 08:28:50,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:50,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941391657] [2025-02-08 08:28:50,522 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:28:50,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:50,537 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 7 equivalence classes. [2025-02-08 08:28:50,556 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 51 of 51 statements. [2025-02-08 08:28:50,557 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-08 08:28:50,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-02-08 08:28:50,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:50,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941391657] [2025-02-08 08:28:50,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941391657] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:28:50,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260787762] [2025-02-08 08:28:50,634 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:28:50,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:50,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:50,636 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:28:50,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 08:28:50,700 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 7 equivalence classes. [2025-02-08 08:28:50,737 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 51 of 51 statements. [2025-02-08 08:28:50,738 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-08 08:28:50,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:50,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 08:28:50,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:28:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 08:28:50,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:28:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 08:28:51,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260787762] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:28:51,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:28:51,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-08 08:28:51,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205778428] [2025-02-08 08:28:51,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:28:51,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 08:28:51,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:51,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 08:28:51,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342 [2025-02-08 08:28:51,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-08 08:28:51,017 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) [2025-02-08 08:28:51,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:51,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-08 08:28:51,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:52,149 INFO L124 PetriNetUnfolderBase]: 867/1999 cut-off events. [2025-02-08 08:28:52,150 INFO L125 PetriNetUnfolderBase]: For 4048/4048 co-relation queries the response was YES. [2025-02-08 08:28:52,154 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 8892 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. [2025-02-08 08:28:52,161 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 443 selfloop transitions, 124 changer transitions 0/570 dead transitions. [2025-02-08 08:28:52,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 570 transitions, 3496 flow [2025-02-08 08:28:52,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-02-08 08:28:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-02-08 08:28:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 980 transitions. [2025-02-08 08:28:52,166 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5539853024307518 [2025-02-08 08:28:52,166 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 146 flow. Second operand 61 states and 980 transitions. [2025-02-08 08:28:52,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 570 transitions, 3496 flow [2025-02-08 08:28:52,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 570 transitions, 3288 flow, removed 96 selfloop flow, removed 2 redundant places. [2025-02-08 08:28:52,186 INFO L231 Difference]: Finished difference. Result has 142 places, 143 transitions, 1310 flow [2025-02-08 08:28:52,187 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} [2025-02-08 08:28:52,188 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 115 predicate places. [2025-02-08 08:28:52,188 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 143 transitions, 1310 flow [2025-02-08 08:28:52,188 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) [2025-02-08 08:28:52,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:52,188 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] [2025-02-08 08:28:52,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 08:28:52,393 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 [2025-02-08 08:28:52,393 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:52,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:52,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1918608438, now seen corresponding path program 6 times [2025-02-08 08:28:52,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:52,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235920748] [2025-02-08 08:28:52,394 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:28:52,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:52,410 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 96 statements into 15 equivalence classes. [2025-02-08 08:28:52,423 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 56 of 96 statements. [2025-02-08 08:28:52,423 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-08 08:28:52,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-02-08 08:28:52,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:52,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235920748] [2025-02-08 08:28:52,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235920748] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:28:52,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473968646] [2025-02-08 08:28:52,515 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:28:52,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:52,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:52,518 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:28:52,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 08:28:52,583 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 96 statements into 15 equivalence classes. [2025-02-08 08:28:52,615 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 56 of 96 statements. [2025-02-08 08:28:52,615 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-08 08:28:52,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:52,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 08:28:52,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:28:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-02-08 08:28:52,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:28:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-02-08 08:28:52,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473968646] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:28:52,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:28:52,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-02-08 08:28:52,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308649043] [2025-02-08 08:28:52,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:28:52,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 08:28:52,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:52,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 08:28:52,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2025-02-08 08:28:52,731 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 08:28:52,732 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) [2025-02-08 08:28:52,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:52,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 08:28:52,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:53,348 INFO L124 PetriNetUnfolderBase]: 1634/3863 cut-off events. [2025-02-08 08:28:53,348 INFO L125 PetriNetUnfolderBase]: For 77362/77494 co-relation queries the response was YES. [2025-02-08 08:28:53,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19256 conditions, 3863 events. 1634/3863 cut-off events. For 77362/77494 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 21514 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. [2025-02-08 08:28:53,385 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 200 selfloop transitions, 66 changer transitions 0/275 dead transitions. [2025-02-08 08:28:53,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 275 transitions, 2812 flow [2025-02-08 08:28:53,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:28:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 08:28:53,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2025-02-08 08:28:53,386 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5793103448275863 [2025-02-08 08:28:53,386 INFO L175 Difference]: Start difference. First operand has 142 places, 143 transitions, 1310 flow. Second operand 10 states and 168 transitions. [2025-02-08 08:28:53,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 275 transitions, 2812 flow [2025-02-08 08:28:53,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 275 transitions, 2602 flow, removed 30 selfloop flow, removed 7 redundant places. [2025-02-08 08:28:53,468 INFO L231 Difference]: Finished difference. Result has 150 places, 148 transitions, 1482 flow [2025-02-08 08:28:53,469 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} [2025-02-08 08:28:53,469 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 123 predicate places. [2025-02-08 08:28:53,469 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 148 transitions, 1482 flow [2025-02-08 08:28:53,469 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) [2025-02-08 08:28:53,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:53,469 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] [2025-02-08 08:28:53,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 08:28:53,674 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 [2025-02-08 08:28:53,674 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:53,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1965844053, now seen corresponding path program 7 times [2025-02-08 08:28:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:53,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666854352] [2025-02-08 08:28:53,675 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:28:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:53,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-08 08:28:53,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-08 08:28:53,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:28:53,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2025-02-08 08:28:54,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:54,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666854352] [2025-02-08 08:28:54,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666854352] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:28:54,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239375376] [2025-02-08 08:28:54,102 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 08:28:54,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:54,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:54,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:28:54,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 08:28:54,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-08 08:28:54,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-08 08:28:54,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:28:54,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:54,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 08:28:54,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:28:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2025-02-08 08:28:54,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:28:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2025-02-08 08:28:54,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239375376] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:28:54,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:28:54,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2025-02-08 08:28:54,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4156094] [2025-02-08 08:28:54,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:28:54,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 08:28:54,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:54,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 08:28:54,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-02-08 08:28:54,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-08 08:28:54,625 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) [2025-02-08 08:28:54,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:54,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-08 08:28:54,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:55,645 INFO L124 PetriNetUnfolderBase]: 2225/5233 cut-off events. [2025-02-08 08:28:55,645 INFO L125 PetriNetUnfolderBase]: For 288000/288000 co-relation queries the response was YES. [2025-02-08 08:28:55,671 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 29205 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. [2025-02-08 08:28:55,704 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 401 selfloop transitions, 88 changer transitions 0/493 dead transitions. [2025-02-08 08:28:55,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 493 transitions, 8746 flow [2025-02-08 08:28:55,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 08:28:55,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 08:28:55,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 372 transitions. [2025-02-08 08:28:55,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5830721003134797 [2025-02-08 08:28:55,708 INFO L175 Difference]: Start difference. First operand has 150 places, 148 transitions, 1482 flow. Second operand 22 states and 372 transitions. [2025-02-08 08:28:55,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 493 transitions, 8746 flow [2025-02-08 08:28:55,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 493 transitions, 6904 flow, removed 840 selfloop flow, removed 3 redundant places. [2025-02-08 08:28:55,874 INFO L231 Difference]: Finished difference. Result has 175 places, 176 transitions, 1852 flow [2025-02-08 08:28:55,876 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} [2025-02-08 08:28:55,877 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 148 predicate places. [2025-02-08 08:28:55,877 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 176 transitions, 1852 flow [2025-02-08 08:28:55,877 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) [2025-02-08 08:28:55,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:55,877 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] [2025-02-08 08:28:55,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 08:28:56,077 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 [2025-02-08 08:28:56,078 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:56,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:56,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1588810101, now seen corresponding path program 8 times [2025-02-08 08:28:56,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:56,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612430894] [2025-02-08 08:28:56,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:28:56,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:56,095 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 151 statements into 2 equivalence classes. [2025-02-08 08:28:56,111 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 151 of 151 statements. [2025-02-08 08:28:56,111 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:28:56,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-02-08 08:28:56,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:28:56,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612430894] [2025-02-08 08:28:56,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612430894] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:28:56,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241690028] [2025-02-08 08:28:56,328 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:28:56,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:28:56,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:28:56,330 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:28:56,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:28:56,406 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 151 statements into 2 equivalence classes. [2025-02-08 08:28:56,514 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 151 of 151 statements. [2025-02-08 08:28:56,514 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:28:56,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:28:56,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 08:28:56,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:28:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-02-08 08:28:56,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:28:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-02-08 08:28:56,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241690028] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:28:56,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:28:56,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2025-02-08 08:28:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078537096] [2025-02-08 08:28:56,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:28:56,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 08:28:56,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:28:56,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 08:28:56,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2025-02-08 08:28:56,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 08:28:56,725 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) [2025-02-08 08:28:56,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:28:56,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 08:28:56,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:28:58,621 INFO L124 PetriNetUnfolderBase]: 4831/11343 cut-off events. [2025-02-08 08:28:58,622 INFO L125 PetriNetUnfolderBase]: For 223869/224193 co-relation queries the response was YES. [2025-02-08 08:28:58,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56778 conditions, 11343 events. 4831/11343 cut-off events. For 223869/224193 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 73618 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. [2025-02-08 08:28:58,738 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 534 selfloop transitions, 76 changer transitions 0/623 dead transitions. [2025-02-08 08:28:58,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 623 transitions, 7340 flow [2025-02-08 08:28:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 08:28:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-08 08:28:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 343 transitions. [2025-02-08 08:28:58,742 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5913793103448276 [2025-02-08 08:28:58,742 INFO L175 Difference]: Start difference. First operand has 175 places, 176 transitions, 1852 flow. Second operand 20 states and 343 transitions. [2025-02-08 08:28:58,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 623 transitions, 7340 flow [2025-02-08 08:28:59,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 623 transitions, 6846 flow, removed 0 selfloop flow, removed 13 redundant places. [2025-02-08 08:28:59,017 INFO L231 Difference]: Finished difference. Result has 192 places, 187 transitions, 2206 flow [2025-02-08 08:28:59,018 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} [2025-02-08 08:28:59,018 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 165 predicate places. [2025-02-08 08:28:59,018 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 187 transitions, 2206 flow [2025-02-08 08:28:59,018 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) [2025-02-08 08:28:59,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:28:59,019 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] [2025-02-08 08:28:59,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 08:28:59,219 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 [2025-02-08 08:28:59,219 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:28:59,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:28:59,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1311700891, now seen corresponding path program 9 times [2025-02-08 08:28:59,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:28:59,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867349937] [2025-02-08 08:28:59,221 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:28:59,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:28:59,245 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 201 statements into 19 equivalence classes. [2025-02-08 08:28:59,370 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 201 of 201 statements. [2025-02-08 08:28:59,370 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-02-08 08:28:59,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 817 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2025-02-08 08:29:00,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:29:00,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867349937] [2025-02-08 08:29:00,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867349937] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:29:00,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169838363] [2025-02-08 08:29:00,009 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 08:29:00,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:29:00,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:29:00,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:29:00,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 08:29:00,107 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 201 statements into 19 equivalence classes. [2025-02-08 08:29:00,599 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) and asserted 201 of 201 statements. [2025-02-08 08:29:00,600 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2025-02-08 08:29:00,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:00,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 08:29:00,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:29:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 817 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2025-02-08 08:29:00,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:29:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 0 proven. 817 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2025-02-08 08:29:00,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169838363] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:29:00,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:29:00,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2025-02-08 08:29:00,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348943265] [2025-02-08 08:29:00,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:29:00,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 08:29:00,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:29:00,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 08:29:00,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-02-08 08:29:00,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 08:29:00,993 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) [2025-02-08 08:29:00,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:29:00,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 08:29:00,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:29:03,069 INFO L124 PetriNetUnfolderBase]: 5339/12529 cut-off events. [2025-02-08 08:29:03,070 INFO L125 PetriNetUnfolderBase]: For 256946/257302 co-relation queries the response was YES. [2025-02-08 08:29:03,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66833 conditions, 12529 events. 5339/12529 cut-off events. For 256946/257302 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 82340 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. [2025-02-08 08:29:03,286 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 590 selfloop transitions, 78 changer transitions 0/681 dead transitions. [2025-02-08 08:29:03,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 681 transitions, 7736 flow [2025-02-08 08:29:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 08:29:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 08:29:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 369 transitions. [2025-02-08 08:29:03,288 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5783699059561128 [2025-02-08 08:29:03,288 INFO L175 Difference]: Start difference. First operand has 192 places, 187 transitions, 2206 flow. Second operand 22 states and 369 transitions. [2025-02-08 08:29:03,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 681 transitions, 7736 flow [2025-02-08 08:29:03,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 681 transitions, 7624 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-08 08:29:03,635 INFO L231 Difference]: Finished difference. Result has 209 places, 190 transitions, 2344 flow [2025-02-08 08:29:03,636 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} [2025-02-08 08:29:03,636 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 182 predicate places. [2025-02-08 08:29:03,636 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 190 transitions, 2344 flow [2025-02-08 08:29:03,636 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) [2025-02-08 08:29:03,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:29:03,637 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] [2025-02-08 08:29:03,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-08 08:29:03,837 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 [2025-02-08 08:29:03,837 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:29:03,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:29:03,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1792412639, now seen corresponding path program 10 times [2025-02-08 08:29:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:29:03,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631405778] [2025-02-08 08:29:03,838 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:29:03,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:29:03,861 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 211 statements into 2 equivalence classes. [2025-02-08 08:29:03,906 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 211 of 211 statements. [2025-02-08 08:29:03,907 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:29:03,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 0 proven. 1537 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:29:06,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:29:06,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631405778] [2025-02-08 08:29:06,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631405778] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:29:06,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432906257] [2025-02-08 08:29:06,065 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 08:29:06,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:29:06,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:29:06,069 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:29:06,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 08:29:06,166 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 211 statements into 2 equivalence classes. [2025-02-08 08:29:06,277 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 211 of 211 statements. [2025-02-08 08:29:06,277 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 08:29:06,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:06,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 125 conjuncts are in the unsatisfiable core [2025-02-08 08:29:06,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:29:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 0 proven. 1537 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:29:06,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:29:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1537 backedges. 0 proven. 1537 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:29:06,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432906257] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:29:06,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:29:06,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2025-02-08 08:29:06,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131697350] [2025-02-08 08:29:06,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:29:06,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-08 08:29:06,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:29:06,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-08 08:29:06,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2025-02-08 08:29:06,751 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 08:29:06,752 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) [2025-02-08 08:29:06,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:29:06,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 08:29:06,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:29:15,772 INFO L124 PetriNetUnfolderBase]: 8720/22940 cut-off events. [2025-02-08 08:29:15,772 INFO L125 PetriNetUnfolderBase]: For 1043631/1046425 co-relation queries the response was YES. [2025-02-08 08:29:16,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171771 conditions, 22940 events. 8720/22940 cut-off events. For 1043631/1046425 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 183803 event pairs, 1649 based on Foata normal form. 335/22877 useless extension candidates. Maximal degree in co-relation 153379. Up to 4888 conditions per place. [2025-02-08 08:29:16,284 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 1843 selfloop transitions, 83 changer transitions 2/1945 dead transitions. [2025-02-08 08:29:16,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 1945 transitions, 32952 flow [2025-02-08 08:29:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-02-08 08:29:16,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-02-08 08:29:16,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 754 transitions. [2025-02-08 08:29:16,287 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-02-08 08:29:16,287 INFO L175 Difference]: Start difference. First operand has 209 places, 190 transitions, 2344 flow. Second operand 44 states and 754 transitions. [2025-02-08 08:29:16,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 1945 transitions, 32952 flow [2025-02-08 08:29:18,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1945 transitions, 31531 flow, removed 0 selfloop flow, removed 17 redundant places. [2025-02-08 08:29:18,229 INFO L231 Difference]: Finished difference. Result has 237 places, 272 transitions, 2554 flow [2025-02-08 08:29:18,229 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} [2025-02-08 08:29:18,229 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 210 predicate places. [2025-02-08 08:29:18,229 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 272 transitions, 2554 flow [2025-02-08 08:29:18,230 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) [2025-02-08 08:29:18,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:29:18,230 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] [2025-02-08 08:29:18,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 08:29:18,430 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 [2025-02-08 08:29:18,431 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:29:18,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:29:18,432 INFO L85 PathProgramCache]: Analyzing trace with hash 494272124, now seen corresponding path program 11 times [2025-02-08 08:29:18,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:29:18,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520100756] [2025-02-08 08:29:18,432 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 08:29:18,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:29:18,452 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 216 statements into 20 equivalence classes. [2025-02-08 08:29:18,493 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) and asserted 216 of 216 statements. [2025-02-08 08:29:18,493 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2025-02-08 08:29:18,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 1721 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2025-02-08 08:29:18,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:29:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520100756] [2025-02-08 08:29:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520100756] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:29:18,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:29:18,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2025-02-08 08:29:18,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414633459] [2025-02-08 08:29:18,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:29:18,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 08:29:18,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:29:18,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 08:29:18,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-02-08 08:29:18,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 08:29:18,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 272 transitions, 2554 flow. Second operand has 23 states, 23 states have (on average 12.26086956521739) internal successors, (282), 23 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:29:18,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:29:18,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 08:29:18,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:29:22,901 INFO L124 PetriNetUnfolderBase]: 8337/19484 cut-off events. [2025-02-08 08:29:22,901 INFO L125 PetriNetUnfolderBase]: For 406547/409491 co-relation queries the response was YES. [2025-02-08 08:29:23,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112673 conditions, 19484 events. 8337/19484 cut-off events. For 406547/409491 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 142031 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. [2025-02-08 08:29:23,100 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 1936 selfloop transitions, 77 changer transitions 0/2026 dead transitions. [2025-02-08 08:29:23,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 2026 transitions, 16042 flow [2025-02-08 08:29:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 08:29:23,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-08 08:29:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 379 transitions. [2025-02-08 08:29:23,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.568215892053973 [2025-02-08 08:29:23,102 INFO L175 Difference]: Start difference. First operand has 237 places, 272 transitions, 2554 flow. Second operand 23 states and 379 transitions. [2025-02-08 08:29:23,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 2026 transitions, 16042 flow [2025-02-08 08:29:23,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 2026 transitions, 16024 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-08 08:29:23,895 INFO L231 Difference]: Finished difference. Result has 256 places, 271 transitions, 2676 flow [2025-02-08 08:29:23,896 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} [2025-02-08 08:29:23,896 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 229 predicate places. [2025-02-08 08:29:23,896 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 271 transitions, 2676 flow [2025-02-08 08:29:23,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.26086956521739) internal successors, (282), 23 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:29:23,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:29:23,897 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] [2025-02-08 08:29:23,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 08:29:23,897 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 08:29:24,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:29:24,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1015205644, now seen corresponding path program 12 times [2025-02-08 08:29:24,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:29:24,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686164649] [2025-02-08 08:29:24,138 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:29:24,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:29:24,165 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 216 statements into 22 equivalence classes. [2025-02-08 08:29:24,233 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 216 of 216 statements. [2025-02-08 08:29:24,233 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-02-08 08:29:24,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 96 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-02-08 08:29:24,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:29:24,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686164649] [2025-02-08 08:29:24,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686164649] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:29:24,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480301582] [2025-02-08 08:29:24,811 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 08:29:24,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:29:24,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:29:24,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:29:24,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 08:29:24,952 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 216 statements into 22 equivalence classes. [2025-02-08 08:29:25,335 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 216 of 216 statements. [2025-02-08 08:29:25,335 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-02-08 08:29:25,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:29:25,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 08:29:25,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:29:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2025-02-08 08:29:25,451 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:29:25,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480301582] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:29:25,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 08:29:25,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2025-02-08 08:29:25,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951854547] [2025-02-08 08:29:25,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:29:25,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 08:29:25,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:29:25,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 08:29:25,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2025-02-08 08:29:25,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-08 08:29:25,462 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) [2025-02-08 08:29:25,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:29:25,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-08 08:29:25,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:29:28,351 INFO L124 PetriNetUnfolderBase]: 5164/12142 cut-off events. [2025-02-08 08:29:28,351 INFO L125 PetriNetUnfolderBase]: For 334265/334265 co-relation queries the response was YES. [2025-02-08 08:29:28,426 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 82445 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. [2025-02-08 08:29:28,436 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 0 selfloop transitions, 0 changer transitions 1601/1601 dead transitions. [2025-02-08 08:29:28,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 1601 transitions, 22221 flow [2025-02-08 08:29:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 08:29:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-08 08:29:28,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 376 transitions. [2025-02-08 08:29:28,438 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5637181409295352 [2025-02-08 08:29:28,438 INFO L175 Difference]: Start difference. First operand has 256 places, 271 transitions, 2676 flow. Second operand 23 states and 376 transitions. [2025-02-08 08:29:28,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 1601 transitions, 22221 flow [2025-02-08 08:29:28,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 1601 transitions, 21259 flow, removed 0 selfloop flow, removed 24 redundant places. [2025-02-08 08:29:28,950 INFO L231 Difference]: Finished difference. Result has 250 places, 0 transitions, 0 flow [2025-02-08 08:29:28,950 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} [2025-02-08 08:29:28,950 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 223 predicate places. [2025-02-08 08:29:28,950 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 0 transitions, 0 flow [2025-02-08 08:29:28,950 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) [2025-02-08 08:29:28,952 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 3 remaining) [2025-02-08 08:29:28,953 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 3 remaining) [2025-02-08 08:29:28,953 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-02-08 08:29:28,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 08:29:29,153 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 [2025-02-08 08:29:29,153 INFO L422 BasicCegarLoop]: Path program histogram: [12, 1, 1] [2025-02-08 08:29:29,156 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:29:29,156 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:29:29,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:29:29 BasicIcfg [2025-02-08 08:29:29,159 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:29:29,160 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:29:29,160 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:29:29,160 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:29:29,161 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:28:48" (3/4) ... [2025-02-08 08:29:29,162 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 08:29:29,164 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread_function_mutex [2025-02-08 08:29:29,167 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2025-02-08 08:29:29,167 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2025-02-08 08:29:29,167 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-02-08 08:29:29,167 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-08 08:29:29,224 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 08:29:29,225 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 08:29:29,225 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:29:29,226 INFO L158 Benchmark]: Toolchain (without parser) took 41498.52ms. Allocated memory was 142.6MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 112.1MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2025-02-08 08:29:29,226 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 201.3MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:29:29,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.32ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 74.5MB in the end (delta: 37.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-02-08 08:29:29,227 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.22ms. Allocated memory is still 142.6MB. Free memory was 74.5MB in the beginning and 72.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:29:29,228 INFO L158 Benchmark]: Boogie Preprocessor took 34.88ms. Allocated memory is still 142.6MB. Free memory was 72.7MB in the beginning and 70.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:29:29,228 INFO L158 Benchmark]: IcfgBuilder took 368.53ms. Allocated memory is still 142.6MB. Free memory was 70.9MB in the beginning and 48.9MB in the end (delta: 22.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 08:29:29,228 INFO L158 Benchmark]: TraceAbstraction took 40486.51ms. Allocated memory was 142.6MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 48.4MB in the beginning and 2.4GB in the end (delta: -2.4GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2025-02-08 08:29:29,229 INFO L158 Benchmark]: Witness Printer took 65.00ms. Allocated memory is still 4.0GB. Free memory was 2.4GB in the beginning and 2.4GB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:29:29,230 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 201.3MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 513.32ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 74.5MB in the end (delta: 37.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.22ms. Allocated memory is still 142.6MB. Free memory was 74.5MB in the beginning and 72.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.88ms. Allocated memory is still 142.6MB. Free memory was 72.7MB in the beginning and 70.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 368.53ms. Allocated memory is still 142.6MB. Free memory was 70.9MB in the beginning and 48.9MB in the end (delta: 22.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 40486.51ms. Allocated memory was 142.6MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 48.4MB in the beginning and 2.4GB in the end (delta: -2.4GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. * Witness Printer took 65.00ms. Allocated memory is still 4.0GB. Free memory was 2.4GB in the beginning and 2.4GB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. 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: 40.4s, OverallIterations: 14, TraceHistogramMax: 21, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 28.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2072 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2054 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 4.7s 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, 2.3s 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, 1.7s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 2467 NumberOfCodeBlocks, 2382 NumberOfCodeBlocksAsserted, 149 NumberOfCheckSat, 3300 ConstructedInterpolants, 0 QuantifiedInterpolants, 7493 SizeOfPredicates, 22 NumberOfNonLiveVariables, 4412 ConjunctsInSsa, 210 ConjunctsInUnsatCore, 29 InterpolantComputations, 7 PerfectInterpolantSequences, 12652/21896 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! [2025-02-08 08:29:29,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE