./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 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/triangular-longest-2.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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:00:05,011 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:00:05,071 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:00:05,077 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:00:05,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:00:05,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:00:05,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:00:05,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:00:05,095 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:00:05,095 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:00:05,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:00:05,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:00:05,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:00:05,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:00:05,096 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:00:05,097 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:00:05,097 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:00:05,097 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:00:05,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:00:05,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:00:05,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:00:05,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:00:05,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:00:05,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:00:05,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:00:05,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:00:05,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:00:05,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:00:05,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:00:05,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:00:05,099 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 -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2025-03-17 14:00:05,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:00:05,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:00:05,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:00:05,329 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:00:05,329 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:00:05,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-2.i [2025-03-17 14:00:06,457 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a9b3968f/f0f5c4186b154c2fba1b85c9396e2d44/FLAG83560d996 [2025-03-17 14:00:06,707 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:00:06,722 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-2.i [2025-03-17 14:00:06,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a9b3968f/f0f5c4186b154c2fba1b85c9396e2d44/FLAG83560d996 [2025-03-17 14:00:07,027 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a9b3968f/f0f5c4186b154c2fba1b85c9396e2d44 [2025-03-17 14:00:07,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:00:07,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:00:07,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:00:07,031 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:00:07,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:00:07,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235e7df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07, skipping insertion in model container [2025-03-17 14:00:07,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,060 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:00:07,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:00:07,302 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:00:07,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:00:07,362 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:00:07,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07 WrapperNode [2025-03-17 14:00:07,363 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:00:07,364 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:00:07,364 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:00:07,364 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:00:07,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,384 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,402 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-17 14:00:07,402 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:00:07,403 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:00:07,403 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:00:07,403 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:00:07,409 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,412 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,425 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]. [2025-03-17 14:00:07,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,435 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:00:07,439 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:00:07,439 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:00:07,439 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:00:07,440 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (1/1) ... [2025-03-17 14:00:07,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:00:07,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:07,473 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) [2025-03-17 14:00:07,477 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 [2025-03-17 14:00:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-17 14:00:07,503 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-17 14:00:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-17 14:00:07,503 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-17 14:00:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 14:00:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:00:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 14:00:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 14:00:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:00:07,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:00:07,504 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 14:00:07,590 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:00:07,591 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:00:07,684 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:00:07,684 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:00:07,763 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:00:07,763 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:00:07,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:00:07 BoogieIcfgContainer [2025-03-17 14:00:07,764 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:00:07,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:00:07,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:00:07,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:00:07,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:00:07" (1/3) ... [2025-03-17 14:00:07,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d109d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:00:07, skipping insertion in model container [2025-03-17 14:00:07,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:07" (2/3) ... [2025-03-17 14:00:07,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d109d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:00:07, skipping insertion in model container [2025-03-17 14:00:07,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:00:07" (3/3) ... [2025-03-17 14:00:07,772 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2025-03-17 14:00:07,783 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:00:07,786 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longest-2.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-17 14:00:07,786 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:00:07,819 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 14:00:07,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2025-03-17 14:00:07,868 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-03-17 14:00:07,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:00:07,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-03-17 14:00:07,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2025-03-17 14:00:07,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2025-03-17 14:00:07,878 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:00:07,888 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;@ff22074, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:00:07,889 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 14:00:07,895 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:00:07,895 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-03-17 14:00:07,895 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:00:07,895 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:07,895 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:07,896 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:07,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:07,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1190746502, now seen corresponding path program 1 times [2025-03-17 14:00:07,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:07,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928912941] [2025-03-17 14:00:07,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:07,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:07,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 14:00:07,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 14:00:07,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:07,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:08,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:08,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928912941] [2025-03-17 14:00:08,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928912941] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:08,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:08,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:00:08,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847511481] [2025-03-17 14:00:08,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:08,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:00:08,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:08,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:00:08,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:00:08,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:08,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:08,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:08,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:08,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:08,261 INFO L124 PetriNetUnfolderBase]: 185/359 cut-off events. [2025-03-17 14:00:08,262 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 14:00:08,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 359 events. 185/359 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1574 event pairs, 135 based on Foata normal form. 32/386 useless extension candidates. Maximal degree in co-relation 653. Up to 290 conditions per place. [2025-03-17 14:00:08,267 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 15 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2025-03-17 14:00:08,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 86 flow [2025-03-17 14:00:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:00:08,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:00:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-03-17 14:00:08,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-03-17 14:00:08,278 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 44 transitions. [2025-03-17 14:00:08,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 86 flow [2025-03-17 14:00:08,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:00:08,283 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2025-03-17 14:00:08,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2025-03-17 14:00:08,289 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2025-03-17 14:00:08,291 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2025-03-17 14:00:08,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:08,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:08,292 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:08,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:00:08,292 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:08,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:08,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1190746953, now seen corresponding path program 1 times [2025-03-17 14:00:08,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:08,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953344624] [2025-03-17 14:00:08,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:08,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:08,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 14:00:08,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 14:00:08,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:08,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:08,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:08,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953344624] [2025-03-17 14:00:08,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953344624] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:08,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:08,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:00:08,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069955635] [2025-03-17 14:00:08,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:08,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:00:08,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:08,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:00:08,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:00:08,475 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:08,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:08,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:08,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:08,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:08,637 INFO L124 PetriNetUnfolderBase]: 273/487 cut-off events. [2025-03-17 14:00:08,637 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:00:08,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 487 events. 273/487 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1985 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 921. Up to 181 conditions per place. [2025-03-17 14:00:08,639 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 4 changer transitions 21/54 dead transitions. [2025-03-17 14:00:08,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 212 flow [2025-03-17 14:00:08,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 14:00:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 14:00:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2025-03-17 14:00:08,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2025-03-17 14:00:08,640 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 6 states and 99 transitions. [2025-03-17 14:00:08,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 212 flow [2025-03-17 14:00:08,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:00:08,642 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2025-03-17 14:00:08,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2025-03-17 14:00:08,643 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2025-03-17 14:00:08,643 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2025-03-17 14:00:08,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:08,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:08,643 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:08,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:00:08,643 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:08,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:08,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1318103228, now seen corresponding path program 1 times [2025-03-17 14:00:08,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:08,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594488899] [2025-03-17 14:00:08,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:08,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:08,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 14:00:08,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 14:00:08,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:08,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:08,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:08,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594488899] [2025-03-17 14:00:08,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594488899] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:08,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:08,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:00:08,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119023267] [2025-03-17 14:00:08,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:08,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:00:08,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:08,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:00:08,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:00:08,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:08,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:08,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:08,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:08,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:08,965 INFO L124 PetriNetUnfolderBase]: 382/704 cut-off events. [2025-03-17 14:00:08,965 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2025-03-17 14:00:08,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 704 events. 382/704 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3083 event pairs, 65 based on Foata normal form. 27/727 useless extension candidates. Maximal degree in co-relation 1591. Up to 246 conditions per place. [2025-03-17 14:00:08,971 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 9 changer transitions 20/79 dead transitions. [2025-03-17 14:00:08,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 382 flow [2025-03-17 14:00:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 14:00:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 14:00:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-03-17 14:00:08,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-03-17 14:00:08,973 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 9 states and 144 transitions. [2025-03-17 14:00:08,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 382 flow [2025-03-17 14:00:08,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 366 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-03-17 14:00:08,977 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 159 flow [2025-03-17 14:00:08,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2025-03-17 14:00:08,977 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2025-03-17 14:00:08,977 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 159 flow [2025-03-17 14:00:08,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:08,978 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:08,978 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:08,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 14:00:08,978 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:08,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:08,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1201091516, now seen corresponding path program 2 times [2025-03-17 14:00:08,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:08,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374555872] [2025-03-17 14:00:08,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:00:08,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:08,986 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-03-17 14:00:08,996 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 14:00:08,996 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:00:08,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:09,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:09,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374555872] [2025-03-17 14:00:09,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374555872] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:09,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:09,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:00:09,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561370982] [2025-03-17 14:00:09,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:09,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:00:09,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:09,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:00:09,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:00:09,105 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:09,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:09,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:09,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:09,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:09,256 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2025-03-17 14:00:09,256 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2025-03-17 14:00:09,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 611 events. 328/611 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2599 event pairs, 65 based on Foata normal form. 45/652 useless extension candidates. Maximal degree in co-relation 1723. Up to 234 conditions per place. [2025-03-17 14:00:09,259 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 9 changer transitions 28/79 dead transitions. [2025-03-17 14:00:09,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 499 flow [2025-03-17 14:00:09,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:00:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 14:00:09,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2025-03-17 14:00:09,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2025-03-17 14:00:09,260 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 159 flow. Second operand 8 states and 127 transitions. [2025-03-17 14:00:09,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 499 flow [2025-03-17 14:00:09,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-17 14:00:09,264 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 213 flow [2025-03-17 14:00:09,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2025-03-17 14:00:09,264 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2025-03-17 14:00:09,265 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 213 flow [2025-03-17 14:00:09,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:09,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:09,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:09,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:00:09,265 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:09,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1701427140, now seen corresponding path program 1 times [2025-03-17 14:00:09,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:09,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814883044] [2025-03-17 14:00:09,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:09,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:09,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:00:09,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:00:09,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:09,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:09,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:09,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814883044] [2025-03-17 14:00:09,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814883044] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:09,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:09,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 14:00:09,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636657564] [2025-03-17 14:00:09,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:09,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 14:00:09,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:09,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 14:00:09,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 14:00:09,371 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:09,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:09,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:09,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:09,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:09,534 INFO L124 PetriNetUnfolderBase]: 355/662 cut-off events. [2025-03-17 14:00:09,534 INFO L125 PetriNetUnfolderBase]: For 1747/1747 co-relation queries the response was YES. [2025-03-17 14:00:09,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069 conditions, 662 events. 355/662 cut-off events. For 1747/1747 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2886 event pairs, 86 based on Foata normal form. 18/676 useless extension candidates. Maximal degree in co-relation 2046. Up to 258 conditions per place. [2025-03-17 14:00:09,539 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 43 selfloop transitions, 16 changer transitions 21/84 dead transitions. [2025-03-17 14:00:09,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 600 flow [2025-03-17 14:00:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 14:00:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 14:00:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-03-17 14:00:09,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2025-03-17 14:00:09,541 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 213 flow. Second operand 9 states and 140 transitions. [2025-03-17 14:00:09,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 600 flow [2025-03-17 14:00:09,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 530 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-03-17 14:00:09,552 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 300 flow [2025-03-17 14:00:09,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2025-03-17 14:00:09,552 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2025-03-17 14:00:09,553 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 300 flow [2025-03-17 14:00:09,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:09,553 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:09,554 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:09,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 14:00:09,554 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:09,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash 661783278, now seen corresponding path program 2 times [2025-03-17 14:00:09,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:09,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863996777] [2025-03-17 14:00:09,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:00:09,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:09,562 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:00:09,564 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:00:09,565 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:00:09,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:09,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863996777] [2025-03-17 14:00:09,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863996777] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:09,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:09,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 14:00:09,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260366633] [2025-03-17 14:00:09,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:09,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 14:00:09,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:09,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 14:00:09,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 14:00:09,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:09,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:09,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:09,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:09,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:09,872 INFO L124 PetriNetUnfolderBase]: 463/849 cut-off events. [2025-03-17 14:00:09,872 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2025-03-17 14:00:09,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 849 events. 463/849 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3783 event pairs, 59 based on Foata normal form. 27/870 useless extension candidates. Maximal degree in co-relation 2724. Up to 154 conditions per place. [2025-03-17 14:00:09,878 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 25 changer transitions 30/103 dead transitions. [2025-03-17 14:00:09,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 764 flow [2025-03-17 14:00:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:00:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:00:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2025-03-17 14:00:09,879 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5360501567398119 [2025-03-17 14:00:09,879 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 300 flow. Second operand 11 states and 171 transitions. [2025-03-17 14:00:09,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 764 flow [2025-03-17 14:00:09,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 716 flow, removed 20 selfloop flow, removed 3 redundant places. [2025-03-17 14:00:09,887 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 424 flow [2025-03-17 14:00:09,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=424, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2025-03-17 14:00:09,889 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2025-03-17 14:00:09,889 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 424 flow [2025-03-17 14:00:09,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:09,889 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:09,889 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:09,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 14:00:09,889 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:09,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1798932915, now seen corresponding path program 1 times [2025-03-17 14:00:09,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:09,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251068612] [2025-03-17 14:00:09,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:09,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:09,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:00:09,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:00:09,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:09,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:10,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:10,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:10,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251068612] [2025-03-17 14:00:10,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251068612] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:10,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879998943] [2025-03-17 14:00:10,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:10,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:10,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:10,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:10,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 14:00:10,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:00:10,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:00:10,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:10,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:10,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 14:00:10,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:10,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:10,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:10,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879998943] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:10,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:10,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-03-17 14:00:10,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491921072] [2025-03-17 14:00:10,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:10,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 14:00:10,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:10,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 14:00:10,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-17 14:00:10,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:10,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 424 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:10,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:10,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:10,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:10,683 INFO L124 PetriNetUnfolderBase]: 589/1100 cut-off events. [2025-03-17 14:00:10,683 INFO L125 PetriNetUnfolderBase]: For 7230/7230 co-relation queries the response was YES. [2025-03-17 14:00:10,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4284 conditions, 1100 events. 589/1100 cut-off events. For 7230/7230 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4767 event pairs, 137 based on Foata normal form. 63/1159 useless extension candidates. Maximal degree in co-relation 4254. Up to 486 conditions per place. [2025-03-17 14:00:10,690 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 19 changer transitions 67/154 dead transitions. [2025-03-17 14:00:10,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 154 transitions, 1384 flow [2025-03-17 14:00:10,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-17 14:00:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-17 14:00:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2025-03-17 14:00:10,692 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2025-03-17 14:00:10,692 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 424 flow. Second operand 19 states and 288 transitions. [2025-03-17 14:00:10,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 154 transitions, 1384 flow [2025-03-17 14:00:10,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 154 transitions, 1305 flow, removed 32 selfloop flow, removed 5 redundant places. [2025-03-17 14:00:10,704 INFO L231 Difference]: Finished difference. Result has 89 places, 54 transitions, 560 flow [2025-03-17 14:00:10,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=560, PETRI_PLACES=89, PETRI_TRANSITIONS=54} [2025-03-17 14:00:10,704 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2025-03-17 14:00:10,705 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 54 transitions, 560 flow [2025-03-17 14:00:10,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:10,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:10,705 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:10,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 14:00:10,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:10,909 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:10,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:10,910 INFO L85 PathProgramCache]: Analyzing trace with hash -865156721, now seen corresponding path program 2 times [2025-03-17 14:00:10,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:10,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329116444] [2025-03-17 14:00:10,910 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:00:10,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:10,915 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:00:10,918 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:00:10,919 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:00:10,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:11,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:11,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329116444] [2025-03-17 14:00:11,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329116444] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:11,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:11,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 14:00:11,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134466417] [2025-03-17 14:00:11,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:11,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 14:00:11,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:11,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 14:00:11,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 14:00:11,034 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:11,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 54 transitions, 560 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:11,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:11,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:11,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:11,321 INFO L124 PetriNetUnfolderBase]: 670/1276 cut-off events. [2025-03-17 14:00:11,321 INFO L125 PetriNetUnfolderBase]: For 19712/19712 co-relation queries the response was YES. [2025-03-17 14:00:11,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6234 conditions, 1276 events. 670/1276 cut-off events. For 19712/19712 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6156 event pairs, 132 based on Foata normal form. 27/1299 useless extension candidates. Maximal degree in co-relation 6193. Up to 483 conditions per place. [2025-03-17 14:00:11,329 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 76 selfloop transitions, 25 changer transitions 31/136 dead transitions. [2025-03-17 14:00:11,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 136 transitions, 1552 flow [2025-03-17 14:00:11,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 14:00:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 14:00:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 232 transitions. [2025-03-17 14:00:11,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-03-17 14:00:11,330 INFO L175 Difference]: Start difference. First operand has 89 places, 54 transitions, 560 flow. Second operand 15 states and 232 transitions. [2025-03-17 14:00:11,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 136 transitions, 1552 flow [2025-03-17 14:00:11,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 136 transitions, 1251 flow, removed 138 selfloop flow, removed 12 redundant places. [2025-03-17 14:00:11,343 INFO L231 Difference]: Finished difference. Result has 91 places, 60 transitions, 624 flow [2025-03-17 14:00:11,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=624, PETRI_PLACES=91, PETRI_TRANSITIONS=60} [2025-03-17 14:00:11,344 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2025-03-17 14:00:11,344 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 60 transitions, 624 flow [2025-03-17 14:00:11,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:11,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:11,344 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:11,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 14:00:11,345 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:11,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:11,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2125096619, now seen corresponding path program 3 times [2025-03-17 14:00:11,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:11,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547941963] [2025-03-17 14:00:11,345 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:00:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:11,350 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-17 14:00:11,353 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:00:11,353 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 14:00:11,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:11,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:11,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547941963] [2025-03-17 14:00:11,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547941963] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:11,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598944092] [2025-03-17 14:00:11,431 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:00:11,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:11,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:11,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:11,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 14:00:11,475 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-17 14:00:11,487 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:00:11,488 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 14:00:11,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:11,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 14:00:11,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:11,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:11,535 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:11,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598944092] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:11,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:11,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-17 14:00:11,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499794235] [2025-03-17 14:00:11,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:11,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 14:00:11,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:11,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 14:00:11,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2025-03-17 14:00:11,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:11,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 60 transitions, 624 flow. Second operand has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:11,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:11,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:11,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:12,228 INFO L124 PetriNetUnfolderBase]: 973/1788 cut-off events. [2025-03-17 14:00:12,229 INFO L125 PetriNetUnfolderBase]: For 26627/26627 co-relation queries the response was YES. [2025-03-17 14:00:12,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8714 conditions, 1788 events. 973/1788 cut-off events. For 26627/26627 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9099 event pairs, 96 based on Foata normal form. 81/1865 useless extension candidates. Maximal degree in co-relation 8673. Up to 269 conditions per place. [2025-03-17 14:00:12,238 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 85 selfloop transitions, 54 changer transitions 81/224 dead transitions. [2025-03-17 14:00:12,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 224 transitions, 2567 flow [2025-03-17 14:00:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-17 14:00:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-17 14:00:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 388 transitions. [2025-03-17 14:00:12,240 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5351724137931034 [2025-03-17 14:00:12,240 INFO L175 Difference]: Start difference. First operand has 91 places, 60 transitions, 624 flow. Second operand 25 states and 388 transitions. [2025-03-17 14:00:12,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 224 transitions, 2567 flow [2025-03-17 14:00:12,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 224 transitions, 2347 flow, removed 94 selfloop flow, removed 8 redundant places. [2025-03-17 14:00:12,265 INFO L231 Difference]: Finished difference. Result has 120 places, 81 transitions, 1072 flow [2025-03-17 14:00:12,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1072, PETRI_PLACES=120, PETRI_TRANSITIONS=81} [2025-03-17 14:00:12,266 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2025-03-17 14:00:12,266 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 81 transitions, 1072 flow [2025-03-17 14:00:12,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:12,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:12,266 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:12,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 14:00:12,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-17 14:00:12,470 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:12,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:12,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2006801339, now seen corresponding path program 1 times [2025-03-17 14:00:12,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:12,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369354727] [2025-03-17 14:00:12,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:12,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:12,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 14:00:12,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 14:00:12,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:12,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:00:12,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369354727] [2025-03-17 14:00:12,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369354727] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828550630] [2025-03-17 14:00:12,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:12,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:12,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:12,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:12,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 14:00:12,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 14:00:12,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 14:00:12,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:12,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:12,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 14:00:12,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:00:12,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:00:12,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828550630] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:12,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:12,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-03-17 14:00:12,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588211842] [2025-03-17 14:00:12,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:12,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 14:00:12,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:12,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 14:00:12,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2025-03-17 14:00:12,818 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:12,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 81 transitions, 1072 flow. Second operand has 16 states, 16 states have (on average 10.375) internal successors, (166), 16 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:12,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:12,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:12,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:13,486 INFO L124 PetriNetUnfolderBase]: 1369/2570 cut-off events. [2025-03-17 14:00:13,487 INFO L125 PetriNetUnfolderBase]: For 77683/77683 co-relation queries the response was YES. [2025-03-17 14:00:13,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15553 conditions, 2570 events. 1369/2570 cut-off events. For 77683/77683 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 14428 event pairs, 70 based on Foata normal form. 72/2638 useless extension candidates. Maximal degree in co-relation 15500. Up to 458 conditions per place. [2025-03-17 14:00:13,513 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 92 selfloop transitions, 84 changer transitions 88/268 dead transitions. [2025-03-17 14:00:13,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 268 transitions, 4200 flow [2025-03-17 14:00:13,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-17 14:00:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-17 14:00:13,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 425 transitions. [2025-03-17 14:00:13,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5233990147783252 [2025-03-17 14:00:13,516 INFO L175 Difference]: Start difference. First operand has 120 places, 81 transitions, 1072 flow. Second operand 28 states and 425 transitions. [2025-03-17 14:00:13,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 268 transitions, 4200 flow [2025-03-17 14:00:13,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 268 transitions, 3452 flow, removed 348 selfloop flow, removed 17 redundant places. [2025-03-17 14:00:13,633 INFO L231 Difference]: Finished difference. Result has 141 places, 117 transitions, 1798 flow [2025-03-17 14:00:13,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1798, PETRI_PLACES=141, PETRI_TRANSITIONS=117} [2025-03-17 14:00:13,633 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2025-03-17 14:00:13,633 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 117 transitions, 1798 flow [2025-03-17 14:00:13,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.375) internal successors, (166), 16 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:13,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:13,633 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:13,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 14:00:13,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:13,834 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:13,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:13,835 INFO L85 PathProgramCache]: Analyzing trace with hash 788539270, now seen corresponding path program 2 times [2025-03-17 14:00:13,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:13,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128653824] [2025-03-17 14:00:13,835 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:00:13,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:13,840 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-17 14:00:13,845 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:00:13,845 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:00:13,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:13,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128653824] [2025-03-17 14:00:13,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128653824] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:13,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731044689] [2025-03-17 14:00:13,968 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:00:13,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:13,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:13,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:13,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 14:00:13,999 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-17 14:00:14,009 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:00:14,009 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:00:14,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:14,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 14:00:14,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:14,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:14,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731044689] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:14,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:14,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2025-03-17 14:00:14,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213523823] [2025-03-17 14:00:14,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:14,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 14:00:14,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:14,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 14:00:14,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2025-03-17 14:00:14,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:14,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 117 transitions, 1798 flow. Second operand has 19 states, 19 states have (on average 10.105263157894736) internal successors, (192), 19 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:14,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:14,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:14,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:15,218 INFO L124 PetriNetUnfolderBase]: 1864/3498 cut-off events. [2025-03-17 14:00:15,219 INFO L125 PetriNetUnfolderBase]: For 186798/186798 co-relation queries the response was YES. [2025-03-17 14:00:15,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25092 conditions, 3498 events. 1864/3498 cut-off events. For 186798/186798 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 19119 event pairs, 38 based on Foata normal form. 90/3584 useless extension candidates. Maximal degree in co-relation 25029. Up to 680 conditions per place. [2025-03-17 14:00:15,247 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 123 selfloop transitions, 126 changer transitions 123/376 dead transitions. [2025-03-17 14:00:15,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 376 transitions, 6885 flow [2025-03-17 14:00:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-03-17 14:00:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2025-03-17 14:00:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 611 transitions. [2025-03-17 14:00:15,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267241379310345 [2025-03-17 14:00:15,249 INFO L175 Difference]: Start difference. First operand has 141 places, 117 transitions, 1798 flow. Second operand 40 states and 611 transitions. [2025-03-17 14:00:15,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 376 transitions, 6885 flow [2025-03-17 14:00:15,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 376 transitions, 5363 flow, removed 724 selfloop flow, removed 16 redundant places. [2025-03-17 14:00:15,406 INFO L231 Difference]: Finished difference. Result has 182 places, 153 transitions, 2632 flow [2025-03-17 14:00:15,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2632, PETRI_PLACES=182, PETRI_TRANSITIONS=153} [2025-03-17 14:00:15,406 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2025-03-17 14:00:15,406 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 153 transitions, 2632 flow [2025-03-17 14:00:15,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.105263157894736) internal successors, (192), 19 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:15,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:15,407 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:15,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 14:00:15,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:15,609 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:15,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:15,610 INFO L85 PathProgramCache]: Analyzing trace with hash 219362865, now seen corresponding path program 3 times [2025-03-17 14:00:15,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:15,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804999117] [2025-03-17 14:00:15,610 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:00:15,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:15,614 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 46 statements into 5 equivalence classes. [2025-03-17 14:00:15,622 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 46 of 46 statements. [2025-03-17 14:00:15,624 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-03-17 14:00:15,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:15,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:15,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804999117] [2025-03-17 14:00:15,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804999117] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:15,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31145527] [2025-03-17 14:00:15,805 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:00:15,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:15,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:15,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:15,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 14:00:15,837 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 46 statements into 5 equivalence classes. [2025-03-17 14:00:15,850 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 46 of 46 statements. [2025-03-17 14:00:15,851 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-03-17 14:00:15,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:15,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-17 14:00:15,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:15,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:16,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31145527] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:16,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:16,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2025-03-17 14:00:16,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820046324] [2025-03-17 14:00:16,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:16,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-17 14:00:16,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:16,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-17 14:00:16,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2025-03-17 14:00:16,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:16,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 153 transitions, 2632 flow. Second operand has 32 states, 32 states have (on average 10.03125) internal successors, (321), 32 states have internal predecessors, (321), 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) [2025-03-17 14:00:16,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:16,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:16,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:18,085 INFO L124 PetriNetUnfolderBase]: 2800/5141 cut-off events. [2025-03-17 14:00:18,086 INFO L125 PetriNetUnfolderBase]: For 415292/415292 co-relation queries the response was YES. [2025-03-17 14:00:18,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42979 conditions, 5141 events. 2800/5141 cut-off events. For 415292/415292 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 26722 event pairs, 50 based on Foata normal form. 126/5263 useless extension candidates. Maximal degree in co-relation 42898. Up to 1025 conditions per place. [2025-03-17 14:00:18,129 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 202 selfloop transitions, 186 changer transitions 195/587 dead transitions. [2025-03-17 14:00:18,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 587 transitions, 12405 flow [2025-03-17 14:00:18,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-03-17 14:00:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2025-03-17 14:00:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 1007 transitions. [2025-03-17 14:00:18,137 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5261233019853709 [2025-03-17 14:00:18,137 INFO L175 Difference]: Start difference. First operand has 182 places, 153 transitions, 2632 flow. Second operand 66 states and 1007 transitions. [2025-03-17 14:00:18,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 587 transitions, 12405 flow [2025-03-17 14:00:18,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 587 transitions, 10055 flow, removed 1126 selfloop flow, removed 23 redundant places. [2025-03-17 14:00:18,515 INFO L231 Difference]: Finished difference. Result has 254 places, 213 transitions, 4219 flow [2025-03-17 14:00:18,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=4219, PETRI_PLACES=254, PETRI_TRANSITIONS=213} [2025-03-17 14:00:18,516 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2025-03-17 14:00:18,516 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 213 transitions, 4219 flow [2025-03-17 14:00:18,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.03125) internal successors, (321), 32 states have internal predecessors, (321), 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) [2025-03-17 14:00:18,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:18,516 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:18,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 14:00:18,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-17 14:00:18,718 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:18,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:18,719 INFO L85 PathProgramCache]: Analyzing trace with hash -987051804, now seen corresponding path program 4 times [2025-03-17 14:00:18,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:18,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760255719] [2025-03-17 14:00:18,719 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:00:18,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:18,728 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 76 statements into 2 equivalence classes. [2025-03-17 14:00:18,739 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-03-17 14:00:18,739 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:00:18,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:19,205 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 1 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:19,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:19,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760255719] [2025-03-17 14:00:19,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760255719] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:19,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336683039] [2025-03-17 14:00:19,205 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:00:19,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:19,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:19,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:19,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 14:00:19,239 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 76 statements into 2 equivalence classes. [2025-03-17 14:00:19,255 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-03-17 14:00:19,255 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:00:19,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:19,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-17 14:00:19,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 1 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:19,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:20,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336683039] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:20,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:20,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2025-03-17 14:00:20,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292843313] [2025-03-17 14:00:20,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:20,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-03-17 14:00:20,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:20,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-03-17 14:00:20,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=2103, Unknown=0, NotChecked=0, Total=2652 [2025-03-17 14:00:20,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:20,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 213 transitions, 4219 flow. Second operand has 52 states, 52 states have (on average 10.038461538461538) internal successors, (522), 52 states have internal predecessors, (522), 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) [2025-03-17 14:00:20,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:20,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:20,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:22,799 INFO L124 PetriNetUnfolderBase]: 3745/7295 cut-off events. [2025-03-17 14:00:22,799 INFO L125 PetriNetUnfolderBase]: For 1157073/1157073 co-relation queries the response was YES. [2025-03-17 14:00:22,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77125 conditions, 7295 events. 3745/7295 cut-off events. For 1157073/1157073 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 41427 event pairs, 628 based on Foata normal form. 171/7462 useless extension candidates. Maximal degree in co-relation 77016. Up to 2428 conditions per place. [2025-03-17 14:00:22,884 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 286 selfloop transitions, 187 changer transitions 239/716 dead transitions. [2025-03-17 14:00:22,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 716 transitions, 20345 flow [2025-03-17 14:00:22,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2025-03-17 14:00:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2025-03-17 14:00:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 1105 transitions. [2025-03-17 14:00:22,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5080459770114942 [2025-03-17 14:00:22,890 INFO L175 Difference]: Start difference. First operand has 254 places, 213 transitions, 4219 flow. Second operand 75 states and 1105 transitions. [2025-03-17 14:00:22,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 716 transitions, 20345 flow [2025-03-17 14:00:24,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 716 transitions, 15854 flow, removed 2225 selfloop flow, removed 22 redundant places. [2025-03-17 14:00:24,551 INFO L231 Difference]: Finished difference. Result has 331 places, 308 transitions, 6065 flow [2025-03-17 14:00:24,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2881, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=6065, PETRI_PLACES=331, PETRI_TRANSITIONS=308} [2025-03-17 14:00:24,552 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2025-03-17 14:00:24,552 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 308 transitions, 6065 flow [2025-03-17 14:00:24,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 10.038461538461538) internal successors, (522), 52 states have internal predecessors, (522), 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) [2025-03-17 14:00:24,553 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:24,553 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:24,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 14:00:24,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:24,753 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:24,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:24,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1316630830, now seen corresponding path program 5 times [2025-03-17 14:00:24,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:24,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434202644] [2025-03-17 14:00:24,754 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:00:24,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:24,760 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 76 statements into 9 equivalence classes. [2025-03-17 14:00:24,769 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 76 of 76 statements. [2025-03-17 14:00:24,769 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-03-17 14:00:24,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:25,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:25,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434202644] [2025-03-17 14:00:25,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434202644] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:25,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651011271] [2025-03-17 14:00:25,137 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:00:25,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:25,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:25,139 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:25,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 14:00:25,170 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 76 statements into 9 equivalence classes. [2025-03-17 14:00:25,194 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 76 of 76 statements. [2025-03-17 14:00:25,194 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-03-17 14:00:25,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:25,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-17 14:00:25,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:25,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:25,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651011271] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:25,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:25,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 50 [2025-03-17 14:00:25,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594497917] [2025-03-17 14:00:25,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:25,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-03-17 14:00:25,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:25,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-03-17 14:00:25,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=2068, Unknown=0, NotChecked=0, Total=2550 [2025-03-17 14:00:25,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:25,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 308 transitions, 6065 flow. Second operand has 51 states, 51 states have (on average 10.03921568627451) internal successors, (512), 51 states have internal predecessors, (512), 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) [2025-03-17 14:00:25,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:25,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:25,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:29,338 INFO L124 PetriNetUnfolderBase]: 4519/9082 cut-off events. [2025-03-17 14:00:29,338 INFO L125 PetriNetUnfolderBase]: For 2237925/2237925 co-relation queries the response was YES. [2025-03-17 14:00:29,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108499 conditions, 9082 events. 4519/9082 cut-off events. For 2237925/2237925 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 54872 event pairs, 350 based on Foata normal form. 171/9247 useless extension candidates. Maximal degree in co-relation 108364. Up to 2132 conditions per place. [2025-03-17 14:00:29,426 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 260 selfloop transitions, 326 changer transitions 251/841 dead transitions. [2025-03-17 14:00:29,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 841 transitions, 25113 flow [2025-03-17 14:00:29,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2025-03-17 14:00:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2025-03-17 14:00:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 1201 transitions. [2025-03-17 14:00:29,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5112813963388676 [2025-03-17 14:00:29,429 INFO L175 Difference]: Start difference. First operand has 331 places, 308 transitions, 6065 flow. Second operand 81 states and 1201 transitions. [2025-03-17 14:00:29,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 841 transitions, 25113 flow [2025-03-17 14:00:33,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 841 transitions, 21327 flow, removed 1829 selfloop flow, removed 31 redundant places. [2025-03-17 14:00:33,423 INFO L231 Difference]: Finished difference. Result has 400 places, 396 transitions, 8601 flow [2025-03-17 14:00:33,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4639, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=8601, PETRI_PLACES=400, PETRI_TRANSITIONS=396} [2025-03-17 14:00:33,424 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2025-03-17 14:00:33,424 INFO L471 AbstractCegarLoop]: Abstraction has has 400 places, 396 transitions, 8601 flow [2025-03-17 14:00:33,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 10.03921568627451) internal successors, (512), 51 states have internal predecessors, (512), 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) [2025-03-17 14:00:33,424 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:33,424 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:33,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 14:00:33,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:33,625 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:33,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:33,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1853555458, now seen corresponding path program 6 times [2025-03-17 14:00:33,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:33,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208696665] [2025-03-17 14:00:33,626 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:00:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:33,633 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 76 statements into 7 equivalence classes. [2025-03-17 14:00:33,643 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 76 of 76 statements. [2025-03-17 14:00:33,643 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-17 14:00:33,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:34,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:34,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208696665] [2025-03-17 14:00:34,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208696665] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:34,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925952181] [2025-03-17 14:00:34,001 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:00:34,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:34,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:34,003 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:34,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 14:00:34,036 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 76 statements into 7 equivalence classes. [2025-03-17 14:00:34,052 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 76 of 76 statements. [2025-03-17 14:00:34,053 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-17 14:00:34,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:34,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-17 14:00:34,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:34,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:34,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925952181] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:34,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:34,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2025-03-17 14:00:34,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632085897] [2025-03-17 14:00:34,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:34,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-03-17 14:00:34,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:34,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-03-17 14:00:34,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2229, Unknown=0, NotChecked=0, Total=2652 [2025-03-17 14:00:34,621 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:34,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 396 transitions, 8601 flow. Second operand has 52 states, 52 states have (on average 10.057692307692308) internal successors, (523), 52 states have internal predecessors, (523), 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) [2025-03-17 14:00:34,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:34,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:34,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:39,139 INFO L124 PetriNetUnfolderBase]: 5518/11076 cut-off events. [2025-03-17 14:00:39,139 INFO L125 PetriNetUnfolderBase]: For 3833895/3833895 co-relation queries the response was YES. [2025-03-17 14:00:39,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150682 conditions, 11076 events. 5518/11076 cut-off events. For 3833895/3833895 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 68692 event pairs, 68 based on Foata normal form. 180/11252 useless extension candidates. Maximal degree in co-relation 150526. Up to 2636 conditions per place. [2025-03-17 14:00:39,427 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 275 selfloop transitions, 452 changer transitions 284/1015 dead transitions. [2025-03-17 14:00:39,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 1015 transitions, 33988 flow [2025-03-17 14:00:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-03-17 14:00:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2025-03-17 14:00:39,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 1441 transitions. [2025-03-17 14:00:39,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5176005747126436 [2025-03-17 14:00:39,429 INFO L175 Difference]: Start difference. First operand has 400 places, 396 transitions, 8601 flow. Second operand 96 states and 1441 transitions. [2025-03-17 14:00:39,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 1015 transitions, 33988 flow [2025-03-17 14:00:46,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 1015 transitions, 28557 flow, removed 2543 selfloop flow, removed 42 redundant places. [2025-03-17 14:00:46,109 INFO L231 Difference]: Finished difference. Result has 478 places, 481 transitions, 11309 flow [2025-03-17 14:00:46,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6338, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=368, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=11309, PETRI_PLACES=478, PETRI_TRANSITIONS=481} [2025-03-17 14:00:46,110 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 448 predicate places. [2025-03-17 14:00:46,110 INFO L471 AbstractCegarLoop]: Abstraction has has 478 places, 481 transitions, 11309 flow [2025-03-17 14:00:46,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 10.057692307692308) internal successors, (523), 52 states have internal predecessors, (523), 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) [2025-03-17 14:00:46,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:46,110 INFO L206 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:46,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 14:00:46,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 14:00:46,311 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:46,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash -163329412, now seen corresponding path program 7 times [2025-03-17 14:00:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:46,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243111814] [2025-03-17 14:00:46,313 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:00:46,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:46,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-17 14:00:46,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-17 14:00:46,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:46,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:46,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:46,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243111814] [2025-03-17 14:00:46,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243111814] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:46,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424629805] [2025-03-17 14:00:46,668 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:00:46,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:46,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:46,670 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:46,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 14:00:46,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-17 14:00:46,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-17 14:00:46,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:46,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:46,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-17 14:00:46,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:46,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:47,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424629805] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:47,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:47,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2025-03-17 14:00:47,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552668632] [2025-03-17 14:00:47,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:47,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-03-17 14:00:47,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:47,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-03-17 14:00:47,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=733, Invalid=2459, Unknown=0, NotChecked=0, Total=3192 [2025-03-17 14:00:47,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:47,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 481 transitions, 11309 flow. Second operand has 57 states, 57 states have (on average 10.035087719298245) internal successors, (572), 57 states have internal predecessors, (572), 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) [2025-03-17 14:00:47,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:47,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:47,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:53,673 INFO L124 PetriNetUnfolderBase]: 6949/13909 cut-off events. [2025-03-17 14:00:53,673 INFO L125 PetriNetUnfolderBase]: For 7182198/7182198 co-relation queries the response was YES. [2025-03-17 14:00:53,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226780 conditions, 13909 events. 6949/13909 cut-off events. For 7182198/7182198 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 87165 event pairs, 40 based on Foata normal form. 189/14094 useless extension candidates. Maximal degree in co-relation 226598. Up to 3326 conditions per place. [2025-03-17 14:00:53,896 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 350 selfloop transitions, 565 changer transitions 313/1232 dead transitions. [2025-03-17 14:00:53,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 1232 transitions, 49852 flow [2025-03-17 14:00:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2025-03-17 14:00:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2025-03-17 14:00:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 1689 transitions. [2025-03-17 14:00:53,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5246971109040075 [2025-03-17 14:00:53,900 INFO L175 Difference]: Start difference. First operand has 478 places, 481 transitions, 11309 flow. Second operand 111 states and 1689 transitions. [2025-03-17 14:00:53,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 1232 transitions, 49852 flow [2025-03-17 14:01:05,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 1232 transitions, 39746 flow, removed 4855 selfloop flow, removed 47 redundant places. [2025-03-17 14:01:05,869 INFO L231 Difference]: Finished difference. Result has 580 places, 596 transitions, 16501 flow [2025-03-17 14:01:05,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=8053, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=16501, PETRI_PLACES=580, PETRI_TRANSITIONS=596} [2025-03-17 14:01:05,870 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 550 predicate places. [2025-03-17 14:01:05,870 INFO L471 AbstractCegarLoop]: Abstraction has has 580 places, 596 transitions, 16501 flow [2025-03-17 14:01:05,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 10.035087719298245) internal successors, (572), 57 states have internal predecessors, (572), 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) [2025-03-17 14:01:05,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:05,871 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:05,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 14:01:06,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-17 14:01:06,071 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:06,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:06,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1234965310, now seen corresponding path program 8 times [2025-03-17 14:01:06,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:01:06,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539910099] [2025-03-17 14:01:06,073 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:01:06,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:01:06,078 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 124 statements into 2 equivalence classes. [2025-03-17 14:01:06,088 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 124 of 124 statements. [2025-03-17 14:01:06,088 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:01:06,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:06,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:01:06,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539910099] [2025-03-17 14:01:06,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539910099] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:01:06,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912914822] [2025-03-17 14:01:06,665 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:01:06,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:06,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:06,667 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:06,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 14:01:06,704 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 124 statements into 2 equivalence classes. [2025-03-17 14:01:06,724 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 124 of 124 statements. [2025-03-17 14:01:06,724 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:01:06,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:06,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-17 14:01:06,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:06,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:01:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:07,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912914822] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:01:07,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:01:07,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 83 [2025-03-17 14:01:07,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354236282] [2025-03-17 14:01:07,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:01:07,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2025-03-17 14:01:07,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:01:07,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2025-03-17 14:01:07,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1578, Invalid=5394, Unknown=0, NotChecked=0, Total=6972 [2025-03-17 14:01:07,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:07,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 596 transitions, 16501 flow. Second operand has 84 states, 84 states have (on average 10.011904761904763) internal successors, (841), 84 states have internal predecessors, (841), 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) [2025-03-17 14:01:07,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:07,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:07,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:15,400 INFO L124 PetriNetUnfolderBase]: 7552/15161 cut-off events. [2025-03-17 14:01:15,400 INFO L125 PetriNetUnfolderBase]: For 10434464/10434464 co-relation queries the response was YES. [2025-03-17 14:01:15,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264799 conditions, 15161 events. 7552/15161 cut-off events. For 10434464/10434464 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 95544 event pairs, 106 based on Foata normal form. 63/15220 useless extension candidates. Maximal degree in co-relation 264578. Up to 3620 conditions per place. [2025-03-17 14:01:15,650 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 343 selfloop transitions, 624 changer transitions 199/1170 dead transitions. [2025-03-17 14:01:15,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 1170 transitions, 45566 flow [2025-03-17 14:01:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2025-03-17 14:01:15,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2025-03-17 14:01:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 1371 transitions. [2025-03-17 14:01:15,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5195149677908298 [2025-03-17 14:01:15,651 INFO L175 Difference]: Start difference. First operand has 580 places, 596 transitions, 16501 flow. Second operand 91 states and 1371 transitions. [2025-03-17 14:01:15,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 1170 transitions, 45566 flow [2025-03-17 14:01:40,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 1170 transitions, 33212 flow, removed 5855 selfloop flow, removed 68 redundant places. [2025-03-17 14:01:40,030 INFO L231 Difference]: Finished difference. Result has 592 places, 665 transitions, 14388 flow [2025-03-17 14:01:40,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=10808, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=558, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=14388, PETRI_PLACES=592, PETRI_TRANSITIONS=665} [2025-03-17 14:01:40,031 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 562 predicate places. [2025-03-17 14:01:40,032 INFO L471 AbstractCegarLoop]: Abstraction has has 592 places, 665 transitions, 14388 flow [2025-03-17 14:01:40,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 10.011904761904763) internal successors, (841), 84 states have internal predecessors, (841), 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) [2025-03-17 14:01:40,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:40,032 INFO L206 CegarLoopForPetriNet]: trace histogram [21, 21, 20, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:40,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 14:01:40,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-17 14:01:40,233 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:40,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:40,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1858122590, now seen corresponding path program 9 times [2025-03-17 14:01:40,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:01:40,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695464957] [2025-03-17 14:01:40,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:01:40,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:01:40,243 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 130 statements into 16 equivalence classes. [2025-03-17 14:01:40,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 130 of 130 statements. [2025-03-17 14:01:40,264 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-03-17 14:01:40,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 873 proven. 31 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 14:01:40,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:01:40,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695464957] [2025-03-17 14:01:40,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695464957] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:01:40,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372130691] [2025-03-17 14:01:40,540 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:01:40,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:40,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:40,542 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:40,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 14:01:40,578 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 130 statements into 16 equivalence classes. [2025-03-17 14:01:40,601 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 130 of 130 statements. [2025-03-17 14:01:40,601 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-03-17 14:01:40,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:40,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-17 14:01:40,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 904 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 14:01:40,704 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:40,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372130691] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:40,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 14:01:40,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2025-03-17 14:01:40,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012005967] [2025-03-17 14:01:40,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:40,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 14:01:40,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:01:40,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 14:01:40,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2025-03-17 14:01:40,719 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:40,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 665 transitions, 14388 flow. Second operand has 23 states, 23 states have (on average 12.73913043478261) internal successors, (293), 23 states have internal predecessors, (293), 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) [2025-03-17 14:01:40,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:40,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:40,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand