./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/safe021_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-wmm/safe021_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:56:57,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:56:57,099 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:56:57,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:56:57,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:56:57,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:56:57,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:56:57,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:56:57,131 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:56:57,131 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:56:57,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:56:57,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:56:57,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:56:57,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:56:57,131 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:56:57,131 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:56:57,131 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:56:57,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:56:57,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:56:57,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:56:57,131 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:56:57,132 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:56:57,132 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:56:57,132 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:56:57,132 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:56:57,132 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:56:57,132 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:56:57,132 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:56:57,132 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:56:57,132 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:56:57,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:56:57,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:56:57,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:56:57,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:56:57,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:56:57,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:56:57,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:56:57,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:56:57,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:56:57,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:56:57,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:56:57,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:56:57,134 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/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 -> 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 [2025-03-04 09:56:57,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:56:57,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:56:57,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:56:57,395 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:56:57,395 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:56:57,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe021_tso.i [2025-03-04 09:56:58,497 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5a9dfd8d/562851911db84ee5829b8ebf2eefaff4/FLAG1b5b4c1ce [2025-03-04 09:56:58,740 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:56:58,741 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe021_tso.i [2025-03-04 09:56:58,753 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5a9dfd8d/562851911db84ee5829b8ebf2eefaff4/FLAG1b5b4c1ce [2025-03-04 09:56:58,763 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5a9dfd8d/562851911db84ee5829b8ebf2eefaff4 [2025-03-04 09:56:58,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:56:58,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:56:58,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:56:58,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:56:58,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:56:58,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:56:58" (1/1) ... [2025-03-04 09:56:58,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a06d7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:58, skipping insertion in model container [2025-03-04 09:56:58,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:56:58" (1/1) ... [2025-03-04 09:56:58,793 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:56:58,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:56:58,993 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:56:59,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:56:59,065 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:56:59,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59 WrapperNode [2025-03-04 09:56:59,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:56:59,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:56:59,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:56:59,068 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:56:59,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (1/1) ... [2025-03-04 09:56:59,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (1/1) ... [2025-03-04 09:56:59,102 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2025-03-04 09:56:59,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:56:59,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:56:59,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:56:59,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:56:59,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (1/1) ... [2025-03-04 09:56:59,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (1/1) ... [2025-03-04 09:56:59,114 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (1/1) ... [2025-03-04 09:56:59,130 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 09:56:59,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (1/1) ... [2025-03-04 09:56:59,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (1/1) ... [2025-03-04 09:56:59,134 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (1/1) ... [2025-03-04 09:56:59,135 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (1/1) ... [2025-03-04 09:56:59,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (1/1) ... [2025-03-04 09:56:59,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (1/1) ... [2025-03-04 09:56:59,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:56:59,138 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:56:59,138 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:56:59,138 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:56:59,139 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (1/1) ... [2025-03-04 09:56:59,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:56:59,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:56:59,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 09:56:59,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 09:56:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 09:56:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:56:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-04 09:56:59,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-04 09:56:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-04 09:56:59,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-04 09:56:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-04 09:56:59,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-04 09:56:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:56:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 09:56:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:56:59,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:56:59,193 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 09:56:59,302 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:56:59,304 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:56:59,438 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:56:59,438 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:56:59,506 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:56:59,507 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:56:59,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:56:59 BoogieIcfgContainer [2025-03-04 09:56:59,507 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:56:59,509 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:56:59,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:56:59,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:56:59,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:56:58" (1/3) ... [2025-03-04 09:56:59,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4914fa23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:56:59, skipping insertion in model container [2025-03-04 09:56:59,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:56:59" (2/3) ... [2025-03-04 09:56:59,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4914fa23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:56:59, skipping insertion in model container [2025-03-04 09:56:59,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:56:59" (3/3) ... [2025-03-04 09:56:59,515 INFO L128 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2025-03-04 09:56:59,527 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:56:59,528 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe021_tso.i that has 4 procedures, 42 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 09:56:59,528 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:56:59,569 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:56:59,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 43 transitions, 98 flow [2025-03-04 09:56:59,638 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2025-03-04 09:56:59,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:56:59,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 2/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2025-03-04 09:56:59,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 43 transitions, 98 flow [2025-03-04 09:56:59,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 39 transitions, 87 flow [2025-03-04 09:56:59,653 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:56:59,666 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;@49c198ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:56:59,666 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-04 09:56:59,676 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:56:59,676 INFO L124 PetriNetUnfolderBase]: 2/37 cut-off events. [2025-03-04 09:56:59,676 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:56:59,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:56:59,677 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:56:59,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:56:59,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:56:59,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1029472030, now seen corresponding path program 1 times [2025-03-04 09:56:59,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:56:59,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165854893] [2025-03-04 09:56:59,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:56:59,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:56:59,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 09:56:59,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 09:56:59,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:56:59,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:56:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:56:59,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:56:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165854893] [2025-03-04 09:56:59,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165854893] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:56:59,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:56:59,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:56:59,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460454595] [2025-03-04 09:56:59,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:56:59,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:56:59,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:56:59,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:56:59,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:56:59,927 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2025-03-04 09:56:59,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2025-03-04 09:56:59,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:56:59,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2025-03-04 09:56:59,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:57:00,528 INFO L124 PetriNetUnfolderBase]: 4775/7427 cut-off events. [2025-03-04 09:57:00,528 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2025-03-04 09:57:00,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14322 conditions, 7427 events. 4775/7427 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 43781 event pairs, 4775 based on Foata normal form. 648/8026 useless extension candidates. Maximal degree in co-relation 14311. Up to 6804 conditions per place. [2025-03-04 09:57:00,574 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 27 selfloop transitions, 1 changer transitions 1/35 dead transitions. [2025-03-04 09:57:00,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 35 transitions, 137 flow [2025-03-04 09:57:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:57:00,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:57:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2025-03-04 09:57:00,584 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2025-03-04 09:57:00,585 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 87 flow. Second operand 3 states and 59 transitions. [2025-03-04 09:57:00,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 35 transitions, 137 flow [2025-03-04 09:57:00,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 09:57:00,593 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 76 flow [2025-03-04 09:57:00,595 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2025-03-04 09:57:00,598 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2025-03-04 09:57:00,598 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 76 flow [2025-03-04 09:57:00,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2025-03-04 09:57:00,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:57:00,598 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:57:00,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:57:00,599 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:57:00,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:57:00,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1029471599, now seen corresponding path program 1 times [2025-03-04 09:57:00,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:57:00,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658583368] [2025-03-04 09:57:00,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:57:00,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:57:00,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 09:57:00,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 09:57:00,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:57:00,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:57:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:57:00,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:57:00,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658583368] [2025-03-04 09:57:00,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658583368] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:57:00,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:57:00,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:57:00,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957645198] [2025-03-04 09:57:00,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:57:00,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:57:00,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:57:00,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:57:00,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:57:00,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2025-03-04 09:57:00,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:57:00,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:57:00,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2025-03-04 09:57:00,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:57:02,026 INFO L124 PetriNetUnfolderBase]: 9943/14753 cut-off events. [2025-03-04 09:57:02,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:57:02,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29199 conditions, 14753 events. 9943/14753 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 90638 event pairs, 2314 based on Foata normal form. 0/14380 useless extension candidates. Maximal degree in co-relation 29193. Up to 6107 conditions per place. [2025-03-04 09:57:02,085 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 46 selfloop transitions, 5 changer transitions 95/151 dead transitions. [2025-03-04 09:57:02,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 151 transitions, 604 flow [2025-03-04 09:57:02,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:57:02,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 09:57:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2025-03-04 09:57:02,088 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5917312661498708 [2025-03-04 09:57:02,089 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 76 flow. Second operand 9 states and 229 transitions. [2025-03-04 09:57:02,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 151 transitions, 604 flow [2025-03-04 09:57:02,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 151 transitions, 603 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:57:02,094 INFO L231 Difference]: Finished difference. Result has 58 places, 37 transitions, 143 flow [2025-03-04 09:57:02,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=143, PETRI_PLACES=58, PETRI_TRANSITIONS=37} [2025-03-04 09:57:02,095 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2025-03-04 09:57:02,095 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 37 transitions, 143 flow [2025-03-04 09:57:02,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:57:02,096 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:57:02,096 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:57:02,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:57:02,096 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:57:02,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:57:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash 881709168, now seen corresponding path program 1 times [2025-03-04 09:57:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:57:02,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541104409] [2025-03-04 09:57:02,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:57:02,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:57:02,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:57:02,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:57:02,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:57:02,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:57:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:57:02,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:57:02,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541104409] [2025-03-04 09:57:02,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541104409] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:57:02,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:57:02,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:57:02,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246030329] [2025-03-04 09:57:02,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:57:02,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:57:02,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:57:02,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:57:02,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:57:02,287 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2025-03-04 09:57:02,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 37 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:57:02,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:57:02,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2025-03-04 09:57:02,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:57:03,254 INFO L124 PetriNetUnfolderBase]: 7482/11256 cut-off events. [2025-03-04 09:57:03,254 INFO L125 PetriNetUnfolderBase]: For 9153/9156 co-relation queries the response was YES. [2025-03-04 09:57:03,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29398 conditions, 11256 events. 7482/11256 cut-off events. For 9153/9156 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 66146 event pairs, 1024 based on Foata normal form. 300/11546 useless extension candidates. Maximal degree in co-relation 29383. Up to 5205 conditions per place. [2025-03-04 09:57:03,317 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 56 selfloop transitions, 6 changer transitions 74/141 dead transitions. [2025-03-04 09:57:03,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 141 transitions, 717 flow [2025-03-04 09:57:03,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:57:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 09:57:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 225 transitions. [2025-03-04 09:57:03,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2025-03-04 09:57:03,321 INFO L175 Difference]: Start difference. First operand has 58 places, 37 transitions, 143 flow. Second operand 10 states and 225 transitions. [2025-03-04 09:57:03,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 141 transitions, 717 flow [2025-03-04 09:57:03,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 141 transitions, 651 flow, removed 18 selfloop flow, removed 4 redundant places. [2025-03-04 09:57:03,363 INFO L231 Difference]: Finished difference. Result has 65 places, 39 transitions, 173 flow [2025-03-04 09:57:03,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=173, PETRI_PLACES=65, PETRI_TRANSITIONS=39} [2025-03-04 09:57:03,365 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2025-03-04 09:57:03,365 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 39 transitions, 173 flow [2025-03-04 09:57:03,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:57:03,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:57:03,365 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:57:03,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:57:03,366 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:57:03,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:57:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2083538864, now seen corresponding path program 1 times [2025-03-04 09:57:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:57:03,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554716363] [2025-03-04 09:57:03,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:57:03,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:57:03,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:57:03,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:57:03,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:57:03,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:57:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:57:03,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:57:03,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554716363] [2025-03-04 09:57:03,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554716363] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:57:03,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:57:03,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:57:03,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035724321] [2025-03-04 09:57:03,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:57:03,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:57:03,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:57:03,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:57:03,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:57:03,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2025-03-04 09:57:03,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 39 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:57:03,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:57:03,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2025-03-04 09:57:03,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:57:04,626 INFO L124 PetriNetUnfolderBase]: 7901/11651 cut-off events. [2025-03-04 09:57:04,627 INFO L125 PetriNetUnfolderBase]: For 20638/20641 co-relation queries the response was YES. [2025-03-04 09:57:04,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33330 conditions, 11651 events. 7901/11651 cut-off events. For 20638/20641 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 68604 event pairs, 564 based on Foata normal form. 330/11970 useless extension candidates. Maximal degree in co-relation 33308. Up to 4081 conditions per place. [2025-03-04 09:57:04,676 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 79 selfloop transitions, 16 changer transitions 104/204 dead transitions. [2025-03-04 09:57:04,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 204 transitions, 1225 flow [2025-03-04 09:57:04,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 09:57:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-04 09:57:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 307 transitions. [2025-03-04 09:57:04,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5491949910554562 [2025-03-04 09:57:04,678 INFO L175 Difference]: Start difference. First operand has 65 places, 39 transitions, 173 flow. Second operand 13 states and 307 transitions. [2025-03-04 09:57:04,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 204 transitions, 1225 flow [2025-03-04 09:57:04,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 204 transitions, 1140 flow, removed 40 selfloop flow, removed 7 redundant places. [2025-03-04 09:57:04,733 INFO L231 Difference]: Finished difference. Result has 76 places, 49 transitions, 344 flow [2025-03-04 09:57:04,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=344, PETRI_PLACES=76, PETRI_TRANSITIONS=49} [2025-03-04 09:57:04,734 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 29 predicate places. [2025-03-04 09:57:04,734 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 49 transitions, 344 flow [2025-03-04 09:57:04,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:57:04,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:57:04,735 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:57:04,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 09:57:04,735 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:57:04,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:57:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1662331380, now seen corresponding path program 1 times [2025-03-04 09:57:04,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:57:04,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804835946] [2025-03-04 09:57:04,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:57:04,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:57:04,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 09:57:04,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 09:57:04,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:57:04,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:57:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:57:04,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:57:04,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804835946] [2025-03-04 09:57:04,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804835946] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:57:04,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:57:04,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:57:04,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063605732] [2025-03-04 09:57:04,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:57:04,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:57:04,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:57:04,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:57:04,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:57:04,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2025-03-04 09:57:04,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 49 transitions, 344 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:57:04,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:57:04,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2025-03-04 09:57:04,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:57:05,881 INFO L124 PetriNetUnfolderBase]: 9355/13839 cut-off events. [2025-03-04 09:57:05,881 INFO L125 PetriNetUnfolderBase]: For 45933/45936 co-relation queries the response was YES. [2025-03-04 09:57:05,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44586 conditions, 13839 events. 9355/13839 cut-off events. For 45933/45936 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 82273 event pairs, 1261 based on Foata normal form. 290/14119 useless extension candidates. Maximal degree in co-relation 44557. Up to 4580 conditions per place. [2025-03-04 09:57:06,006 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 63 selfloop transitions, 7 changer transitions 79/154 dead transitions. [2025-03-04 09:57:06,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 154 transitions, 1196 flow [2025-03-04 09:57:06,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:57:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 09:57:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2025-03-04 09:57:06,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5400516795865633 [2025-03-04 09:57:06,008 INFO L175 Difference]: Start difference. First operand has 76 places, 49 transitions, 344 flow. Second operand 9 states and 209 transitions. [2025-03-04 09:57:06,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 154 transitions, 1196 flow [2025-03-04 09:57:06,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 154 transitions, 1060 flow, removed 68 selfloop flow, removed 8 redundant places. [2025-03-04 09:57:06,107 INFO L231 Difference]: Finished difference. Result has 74 places, 39 transitions, 219 flow [2025-03-04 09:57:06,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=219, PETRI_PLACES=74, PETRI_TRANSITIONS=39} [2025-03-04 09:57:06,107 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 27 predicate places. [2025-03-04 09:57:06,108 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 39 transitions, 219 flow [2025-03-04 09:57:06,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:57:06,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:57:06,108 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] [2025-03-04 09:57:06,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 09:57:06,108 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:57:06,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:57:06,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1939935143, now seen corresponding path program 1 times [2025-03-04 09:57:06,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:57:06,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315927770] [2025-03-04 09:57:06,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:57:06,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:57:06,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 09:57:06,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 09:57:06,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:57:06,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:57:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:57:06,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:57:06,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315927770] [2025-03-04 09:57:06,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315927770] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:57:06,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:57:06,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:57:06,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131300407] [2025-03-04 09:57:06,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:57:06,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:57:06,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:57:06,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:57:06,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:57:06,184 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-03-04 09:57:06,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 39 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2025-03-04 09:57:06,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:57:06,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-03-04 09:57:06,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:57:06,544 INFO L124 PetriNetUnfolderBase]: 3793/6049 cut-off events. [2025-03-04 09:57:06,544 INFO L125 PetriNetUnfolderBase]: For 12801/12804 co-relation queries the response was YES. [2025-03-04 09:57:06,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17609 conditions, 6049 events. 3793/6049 cut-off events. For 12801/12804 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 34696 event pairs, 604 based on Foata normal form. 256/6302 useless extension candidates. Maximal degree in co-relation 17588. Up to 3302 conditions per place. [2025-03-04 09:57:06,569 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 69 selfloop transitions, 5 changer transitions 1/80 dead transitions. [2025-03-04 09:57:06,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 631 flow [2025-03-04 09:57:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:57:06,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 09:57:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2025-03-04 09:57:06,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5988372093023255 [2025-03-04 09:57:06,571 INFO L175 Difference]: Start difference. First operand has 74 places, 39 transitions, 219 flow. Second operand 4 states and 103 transitions. [2025-03-04 09:57:06,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 631 flow [2025-03-04 09:57:06,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 492 flow, removed 21 selfloop flow, removed 14 redundant places. [2025-03-04 09:57:06,584 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 190 flow [2025-03-04 09:57:06,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2025-03-04 09:57:06,585 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 14 predicate places. [2025-03-04 09:57:06,585 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 190 flow [2025-03-04 09:57:06,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2025-03-04 09:57:06,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:57:06,586 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:57:06,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 09:57:06,586 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:57:06,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:57:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1747701534, now seen corresponding path program 1 times [2025-03-04 09:57:06,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:57:06,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519241335] [2025-03-04 09:57:06,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:57:06,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:57:06,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 09:57:06,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 09:57:06,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:57:06,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:57:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:57:06,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:57:06,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519241335] [2025-03-04 09:57:06,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519241335] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:57:06,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:57:06,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:57:06,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156314471] [2025-03-04 09:57:06,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:57:06,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:57:06,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:57:06,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:57:06,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:57:06,694 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-03-04 09:57:06,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:57:06,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:57:06,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-03-04 09:57:06,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:57:07,020 INFO L124 PetriNetUnfolderBase]: 2312/3720 cut-off events. [2025-03-04 09:57:07,020 INFO L125 PetriNetUnfolderBase]: For 3529/3532 co-relation queries the response was YES. [2025-03-04 09:57:07,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10339 conditions, 3720 events. 2312/3720 cut-off events. For 3529/3532 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 19125 event pairs, 316 based on Foata normal form. 198/3915 useless extension candidates. Maximal degree in co-relation 10326. Up to 1269 conditions per place. [2025-03-04 09:57:07,034 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 79 selfloop transitions, 8 changer transitions 2/94 dead transitions. [2025-03-04 09:57:07,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 94 transitions, 611 flow [2025-03-04 09:57:07,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:57:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 09:57:07,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2025-03-04 09:57:07,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5906976744186047 [2025-03-04 09:57:07,036 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 190 flow. Second operand 5 states and 127 transitions. [2025-03-04 09:57:07,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 94 transitions, 611 flow [2025-03-04 09:57:07,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 94 transitions, 601 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-04 09:57:07,040 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 230 flow [2025-03-04 09:57:07,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2025-03-04 09:57:07,040 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2025-03-04 09:57:07,041 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 230 flow [2025-03-04 09:57:07,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:57:07,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:57:07,045 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:57:07,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 09:57:07,045 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:57:07,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:57:07,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1809400953, now seen corresponding path program 1 times [2025-03-04 09:57:07,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:57:07,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686507716] [2025-03-04 09:57:07,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:57:07,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:57:07,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-04 09:57:07,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 09:57:07,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:57:07,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:57:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:57:07,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:57:07,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686507716] [2025-03-04 09:57:07,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686507716] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:57:07,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:57:07,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:57:07,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352082554] [2025-03-04 09:57:07,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:57:07,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:57:07,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:57:07,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:57:07,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:57:07,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2025-03-04 09:57:07,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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) [2025-03-04 09:57:07,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:57:07,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2025-03-04 09:57:07,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:57:07,395 INFO L124 PetriNetUnfolderBase]: 1399/2221 cut-off events. [2025-03-04 09:57:07,395 INFO L125 PetriNetUnfolderBase]: For 3290/3293 co-relation queries the response was YES. [2025-03-04 09:57:07,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 2221 events. 1399/2221 cut-off events. For 3290/3293 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 10148 event pairs, 241 based on Foata normal form. 88/2306 useless extension candidates. Maximal degree in co-relation 6773. Up to 762 conditions per place. [2025-03-04 09:57:07,408 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 67 selfloop transitions, 11 changer transitions 3/86 dead transitions. [2025-03-04 09:57:07,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 568 flow [2025-03-04 09:57:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:57:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 09:57:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2025-03-04 09:57:07,410 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5077519379844961 [2025-03-04 09:57:07,411 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 230 flow. Second operand 6 states and 131 transitions. [2025-03-04 09:57:07,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 568 flow [2025-03-04 09:57:07,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 518 flow, removed 13 selfloop flow, removed 7 redundant places. [2025-03-04 09:57:07,423 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 231 flow [2025-03-04 09:57:07,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2025-03-04 09:57:07,423 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2025-03-04 09:57:07,424 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 231 flow [2025-03-04 09:57:07,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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) [2025-03-04 09:57:07,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:57:07,425 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:57:07,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 09:57:07,425 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 09:57:07,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:57:07,425 INFO L85 PathProgramCache]: Analyzing trace with hash 500312241, now seen corresponding path program 1 times [2025-03-04 09:57:07,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:57:07,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053227223] [2025-03-04 09:57:07,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:57:07,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:57:07,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-04 09:57:07,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 09:57:07,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:57:07,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:57:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:57:07,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:57:07,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053227223] [2025-03-04 09:57:07,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053227223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:57:07,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:57:07,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:57:07,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280930980] [2025-03-04 09:57:07,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:57:07,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:57:07,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:57:07,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:57:07,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:57:07,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2025-03-04 09:57:07,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2025-03-04 09:57:07,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:57:07,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2025-03-04 09:57:07,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:57:07,827 INFO L124 PetriNetUnfolderBase]: 1299/2035 cut-off events. [2025-03-04 09:57:07,828 INFO L125 PetriNetUnfolderBase]: For 2922/2922 co-relation queries the response was YES. [2025-03-04 09:57:07,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6263 conditions, 2035 events. 1299/2035 cut-off events. For 2922/2922 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8819 event pairs, 328 based on Foata normal form. 8/2042 useless extension candidates. Maximal degree in co-relation 6251. Up to 1355 conditions per place. [2025-03-04 09:57:07,833 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2025-03-04 09:57:07,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 85 transitions, 564 flow [2025-03-04 09:57:07,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 09:57:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 09:57:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2025-03-04 09:57:07,835 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43853820598006643 [2025-03-04 09:57:07,835 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 231 flow. Second operand 7 states and 132 transitions. [2025-03-04 09:57:07,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 85 transitions, 564 flow [2025-03-04 09:57:07,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 468 flow, removed 10 selfloop flow, removed 8 redundant places. [2025-03-04 09:57:07,843 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2025-03-04 09:57:07,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2025-03-04 09:57:07,843 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2025-03-04 09:57:07,845 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2025-03-04 09:57:07,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2025-03-04 09:57:07,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-03-04 09:57:07,848 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-03-04 09:57:07,848 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-03-04 09:57:07,848 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-03-04 09:57:07,848 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-03-04 09:57:07,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 09:57:07,848 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:57:07,853 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 09:57:07,853 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 09:57:07,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 09:57:07 BasicIcfg [2025-03-04 09:57:07,860 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 09:57:07,860 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 09:57:07,860 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 09:57:07,861 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 09:57:07,861 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:56:59" (3/4) ... [2025-03-04 09:57:07,863 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 09:57:07,865 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-04 09:57:07,865 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-04 09:57:07,865 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-04 09:57:07,868 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2025-03-04 09:57:07,868 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-04 09:57:07,868 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-04 09:57:07,868 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-04 09:57:07,926 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 09:57:07,926 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 09:57:07,926 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 09:57:07,927 INFO L158 Benchmark]: Toolchain (without parser) took 9160.86ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 111.6MB in the beginning and 964.1MB in the end (delta: -852.5MB). Peak memory consumption was 436.4MB. Max. memory is 16.1GB. [2025-03-04 09:57:07,927 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 226.5MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:57:07,928 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.35ms. Allocated memory is still 142.6MB. Free memory was 111.1MB in the beginning and 91.6MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:57:07,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.89ms. Allocated memory is still 142.6MB. Free memory was 91.6MB in the beginning and 89.7MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:57:07,929 INFO L158 Benchmark]: Boogie Preprocessor took 34.38ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 88.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:57:07,929 INFO L158 Benchmark]: IcfgBuilder took 369.00ms. Allocated memory is still 142.6MB. Free memory was 88.1MB in the beginning and 68.4MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:57:07,929 INFO L158 Benchmark]: TraceAbstraction took 8350.99ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 67.9MB in the beginning and 970.8MB in the end (delta: -902.8MB). Peak memory consumption was 386.1MB. Max. memory is 16.1GB. [2025-03-04 09:57:07,930 INFO L158 Benchmark]: Witness Printer took 66.05ms. Allocated memory is still 1.4GB. Free memory was 970.8MB in the beginning and 964.1MB in the end (delta: 6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:57:07,931 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 226.5MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.35ms. Allocated memory is still 142.6MB. Free memory was 111.1MB in the beginning and 91.6MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.89ms. Allocated memory is still 142.6MB. Free memory was 91.6MB in the beginning and 89.7MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.38ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 88.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 369.00ms. Allocated memory is still 142.6MB. Free memory was 88.1MB in the beginning and 68.4MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8350.99ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 67.9MB in the beginning and 970.8MB in the end (delta: -902.8MB). Peak memory consumption was 386.1MB. Max. memory is 16.1GB. * Witness Printer took 66.05ms. Allocated memory is still 1.4GB. Free memory was 970.8MB in the beginning and 964.1MB in the end (delta: 6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: 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 7 procedures, 66 locations, 5 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: 8.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 706 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 702 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1582 IncrementalHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 2 mSDtfsCounter, 1582 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=4, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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! [2025-03-04 09:57:07,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE