./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/test-easy1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed 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/weaver/test-easy1.wvr.c -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 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:30:02,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:30:02,305 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:30:02,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:30:02,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:30:02,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:30:02,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:30:02,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:30:02,333 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:30:02,333 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:30:02,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:30:02,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:30:02,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:30:02,334 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:30:02,334 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:30:02,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:30:02,335 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:30:02,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:30:02,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:30:02,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:30:02,335 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:30:02,335 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:30:02,335 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:30:02,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:30:02,335 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:30:02,335 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:30:02,336 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:30:02,336 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:30:02,336 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:30:02,336 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:30:02,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:30:02,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:30:02,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:30:02,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:30:02,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:30:02,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:30:02,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:30:02,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:30:02,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:30:02,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:30:02,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:30:02,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:30:02,337 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 -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2025-03-09 01:30:02,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:30:02,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:30:02,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:30:02,560 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:30:02,560 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:30:02,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-03-09 01:30:03,686 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0e858ea1/0fdcd7f6701945fa8785756db5f352fb/FLAG55f723bda [2025-03-09 01:30:03,893 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:30:03,894 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-03-09 01:30:03,899 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0e858ea1/0fdcd7f6701945fa8785756db5f352fb/FLAG55f723bda [2025-03-09 01:30:03,909 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0e858ea1/0fdcd7f6701945fa8785756db5f352fb [2025-03-09 01:30:03,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:30:03,911 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:30:03,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:30:03,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:30:03,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:30:03,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:30:03" (1/1) ... [2025-03-09 01:30:03,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e69d2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:03, skipping insertion in model container [2025-03-09 01:30:03,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:30:03" (1/1) ... [2025-03-09 01:30:03,926 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:30:04,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:30:04,040 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:30:04,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:30:04,065 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:30:04,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04 WrapperNode [2025-03-09 01:30:04,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:30:04,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:30:04,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:30:04,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:30:04,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (1/1) ... [2025-03-09 01:30:04,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (1/1) ... [2025-03-09 01:30:04,090 INFO L138 Inliner]: procedures = 20, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2025-03-09 01:30:04,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:30:04,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:30:04,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:30:04,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:30:04,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (1/1) ... [2025-03-09 01:30:04,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (1/1) ... [2025-03-09 01:30:04,099 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (1/1) ... [2025-03-09 01:30:04,110 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]. [2025-03-09 01:30:04,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (1/1) ... [2025-03-09 01:30:04,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (1/1) ... [2025-03-09 01:30:04,115 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (1/1) ... [2025-03-09 01:30:04,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (1/1) ... [2025-03-09 01:30:04,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (1/1) ... [2025-03-09 01:30:04,118 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (1/1) ... [2025-03-09 01:30:04,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:30:04,119 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:30:04,119 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:30:04,119 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:30:04,124 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (1/1) ... [2025-03-09 01:30:04,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:30:04,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:04,147 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) [2025-03-09 01:30:04,149 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 [2025-03-09 01:30:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:30:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 01:30:04,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 01:30:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 01:30:04,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 01:30:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:30:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:30:04,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:30:04,164 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:30:04,223 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:30:04,225 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:30:04,340 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:30:04,341 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:30:04,431 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:30:04,431 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:30:04,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:30:04 BoogieIcfgContainer [2025-03-09 01:30:04,432 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:30:04,436 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:30:04,436 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:30:04,439 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:30:04,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:30:03" (1/3) ... [2025-03-09 01:30:04,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdaec4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:30:04, skipping insertion in model container [2025-03-09 01:30:04,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:30:04" (2/3) ... [2025-03-09 01:30:04,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdaec4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:30:04, skipping insertion in model container [2025-03-09 01:30:04,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:30:04" (3/3) ... [2025-03-09 01:30:04,442 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2025-03-09 01:30:04,451 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:30:04,453 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy1.wvr.c that has 3 procedures, 19 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-09 01:30:04,453 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:30:04,482 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 01:30:04,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2025-03-09 01:30:04,531 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2025-03-09 01:30:04,533 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:30:04,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-03-09 01:30:04,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2025-03-09 01:30:04,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2025-03-09 01:30:04,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:30:04,551 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;@4b6ccd14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:30:04,551 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-09 01:30:04,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:30:04,557 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-03-09 01:30:04,557 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:30:04,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:04,558 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:04,558 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:04,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:04,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2032214516, now seen corresponding path program 1 times [2025-03-09 01:30:04,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:04,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332911168] [2025-03-09 01:30:04,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:30:04,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:04,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 01:30:04,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 01:30:04,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:04,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:04,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:04,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332911168] [2025-03-09 01:30:04,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332911168] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:30:04,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:30:04,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:30:04,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994960918] [2025-03-09 01:30:04,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:30:04,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:30:04,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:04,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:30:04,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:30:04,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:04,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2025-03-09 01:30:04,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:04,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:04,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:04,809 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2025-03-09 01:30:04,811 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-03-09 01:30:04,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 59/104 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 283 event pairs, 8 based on Foata normal form. 2/69 useless extension candidates. Maximal degree in co-relation 179. Up to 77 conditions per place. [2025-03-09 01:30:04,814 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2025-03-09 01:30:04,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2025-03-09 01:30:04,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:30:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:30:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2025-03-09 01:30:04,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2025-03-09 01:30:04,825 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 41 transitions. [2025-03-09 01:30:04,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2025-03-09 01:30:04,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:30:04,831 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2025-03-09 01:30:04,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2025-03-09 01:30:04,837 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2025-03-09 01:30:04,837 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2025-03-09 01:30:04,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2025-03-09 01:30:04,837 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:04,837 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:04,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:30:04,838 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:04,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:04,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1426630968, now seen corresponding path program 1 times [2025-03-09 01:30:04,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:04,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778679262] [2025-03-09 01:30:04,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:30:04,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:04,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 01:30:04,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 01:30:04,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:04,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:04,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:04,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778679262] [2025-03-09 01:30:04,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778679262] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:30:04,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:30:04,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:30:04,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736290595] [2025-03-09 01:30:04,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:30:04,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:30:04,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:04,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:30:04,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:30:04,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:04,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2025-03-09 01:30:04,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:04,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:04,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:05,042 INFO L124 PetriNetUnfolderBase]: 60/115 cut-off events. [2025-03-09 01:30:05,043 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-09 01:30:05,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 115 events. 60/115 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 330 event pairs, 6 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 79. Up to 46 conditions per place. [2025-03-09 01:30:05,044 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 26 selfloop transitions, 7 changer transitions 2/38 dead transitions. [2025-03-09 01:30:05,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 38 transitions, 183 flow [2025-03-09 01:30:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:30:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:30:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2025-03-09 01:30:05,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63 [2025-03-09 01:30:05,047 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 63 transitions. [2025-03-09 01:30:05,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 38 transitions, 183 flow [2025-03-09 01:30:05,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:30:05,049 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2025-03-09 01:30:05,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2025-03-09 01:30:05,050 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2025-03-09 01:30:05,050 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2025-03-09 01:30:05,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2025-03-09 01:30:05,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:05,050 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:05,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:30:05,050 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:05,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:05,052 INFO L85 PathProgramCache]: Analyzing trace with hash -662948703, now seen corresponding path program 1 times [2025-03-09 01:30:05,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:05,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509631979] [2025-03-09 01:30:05,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:30:05,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:05,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 01:30:05,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 01:30:05,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:05,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:05,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:05,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509631979] [2025-03-09 01:30:05,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509631979] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:05,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12467497] [2025-03-09 01:30:05,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:30:05,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:05,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:05,116 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) [2025-03-09 01:30:05,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 01:30:05,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 01:30:05,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 01:30:05,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:05,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:05,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:30:05,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:05,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:05,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12467497] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:05,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:30:05,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2025-03-09 01:30:05,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241487290] [2025-03-09 01:30:05,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:30:05,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:30:05,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:05,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:30:05,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:30:05,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:05,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2025-03-09 01:30:05,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:05,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:05,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:05,348 INFO L124 PetriNetUnfolderBase]: 61/134 cut-off events. [2025-03-09 01:30:05,348 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2025-03-09 01:30:05,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 134 events. 61/134 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 445 event pairs, 11 based on Foata normal form. 5/136 useless extension candidates. Maximal degree in co-relation 290. Up to 52 conditions per place. [2025-03-09 01:30:05,350 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 28 selfloop transitions, 8 changer transitions 2/41 dead transitions. [2025-03-09 01:30:05,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 256 flow [2025-03-09 01:30:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:30:05,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:30:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 54 transitions. [2025-03-09 01:30:05,350 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2025-03-09 01:30:05,350 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 4 states and 54 transitions. [2025-03-09 01:30:05,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 256 flow [2025-03-09 01:30:05,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:30:05,352 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 153 flow [2025-03-09 01:30:05,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2025-03-09 01:30:05,353 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 8 predicate places. [2025-03-09 01:30:05,353 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 153 flow [2025-03-09 01:30:05,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2025-03-09 01:30:05,353 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:05,353 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:05,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:05,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:05,561 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:05,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:05,562 INFO L85 PathProgramCache]: Analyzing trace with hash -718598781, now seen corresponding path program 2 times [2025-03-09 01:30:05,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:05,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307026788] [2025-03-09 01:30:05,562 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:05,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:05,569 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-09 01:30:05,576 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 01:30:05,576 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:05,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:05,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:05,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:05,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307026788] [2025-03-09 01:30:05,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307026788] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:30:05,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:30:05,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:30:05,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414498233] [2025-03-09 01:30:05,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:30:05,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:30:05,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:05,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:30:05,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:30:05,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:05,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2025-03-09 01:30:05,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:05,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:05,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:05,694 INFO L124 PetriNetUnfolderBase]: 51/111 cut-off events. [2025-03-09 01:30:05,697 INFO L125 PetriNetUnfolderBase]: For 238/241 co-relation queries the response was YES. [2025-03-09 01:30:05,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 111 events. 51/111 cut-off events. For 238/241 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 319 event pairs, 5 based on Foata normal form. 2/110 useless extension candidates. Maximal degree in co-relation 276. Up to 39 conditions per place. [2025-03-09 01:30:05,698 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 28 selfloop transitions, 7 changer transitions 2/40 dead transitions. [2025-03-09 01:30:05,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 291 flow [2025-03-09 01:30:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:30:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:30:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2025-03-09 01:30:05,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-03-09 01:30:05,699 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 153 flow. Second operand 5 states and 60 transitions. [2025-03-09 01:30:05,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 291 flow [2025-03-09 01:30:05,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 287 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-09 01:30:05,701 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 172 flow [2025-03-09 01:30:05,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2025-03-09 01:30:05,702 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 13 predicate places. [2025-03-09 01:30:05,702 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 172 flow [2025-03-09 01:30:05,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2025-03-09 01:30:05,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:05,702 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:05,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 01:30:05,703 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:05,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:05,703 INFO L85 PathProgramCache]: Analyzing trace with hash 132866498, now seen corresponding path program 2 times [2025-03-09 01:30:05,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:05,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81323351] [2025-03-09 01:30:05,703 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:05,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:05,707 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-09 01:30:05,710 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 01:30:05,712 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:05,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:05,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:05,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81323351] [2025-03-09 01:30:05,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81323351] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:05,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011551652] [2025-03-09 01:30:05,758 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:05,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:05,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:05,760 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) [2025-03-09 01:30:05,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 01:30:05,789 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-09 01:30:05,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 01:30:05,800 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:05,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:05,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 01:30:05,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:05,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:05,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011551652] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:05,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:30:05,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2025-03-09 01:30:05,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943963252] [2025-03-09 01:30:05,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:30:05,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:30:05,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:05,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:30:05,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:30:05,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:05,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2025-03-09 01:30:05,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:05,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:05,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:05,953 INFO L124 PetriNetUnfolderBase]: 43/93 cut-off events. [2025-03-09 01:30:05,954 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2025-03-09 01:30:05,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 93 events. 43/93 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 218 event pairs, 4 based on Foata normal form. 4/96 useless extension candidates. Maximal degree in co-relation 233. Up to 57 conditions per place. [2025-03-09 01:30:05,955 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 24 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2025-03-09 01:30:05,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 263 flow [2025-03-09 01:30:05,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:30:05,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:30:05,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2025-03-09 01:30:05,957 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-09 01:30:05,957 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 172 flow. Second operand 4 states and 50 transitions. [2025-03-09 01:30:05,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 263 flow [2025-03-09 01:30:05,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 241 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-09 01:30:05,959 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 169 flow [2025-03-09 01:30:05,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2025-03-09 01:30:05,960 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 15 predicate places. [2025-03-09 01:30:05,960 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 169 flow [2025-03-09 01:30:05,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2025-03-09 01:30:05,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:05,960 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:05,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:06,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:06,163 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:06,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:06,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1818064513, now seen corresponding path program 1 times [2025-03-09 01:30:06,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:06,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169721055] [2025-03-09 01:30:06,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:30:06,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:06,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:30:06,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:30:06,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:06,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:06,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:06,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169721055] [2025-03-09 01:30:06,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169721055] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:06,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907752447] [2025-03-09 01:30:06,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:30:06,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:06,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:06,262 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) [2025-03-09 01:30:06,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 01:30:06,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:30:06,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:30:06,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:06,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:06,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:30:06,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:06,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:06,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907752447] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:06,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:06,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-03-09 01:30:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874359280] [2025-03-09 01:30:06,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:06,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 01:30:06,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:06,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 01:30:06,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2025-03-09 01:30:06,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:06,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 169 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2025-03-09 01:30:06,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:06,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:06,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:06,643 INFO L124 PetriNetUnfolderBase]: 98/193 cut-off events. [2025-03-09 01:30:06,643 INFO L125 PetriNetUnfolderBase]: For 517/517 co-relation queries the response was YES. [2025-03-09 01:30:06,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 193 events. 98/193 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 636 event pairs, 0 based on Foata normal form. 17/209 useless extension candidates. Maximal degree in co-relation 274. Up to 76 conditions per place. [2025-03-09 01:30:06,644 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 19 changer transitions 8/68 dead transitions. [2025-03-09 01:30:06,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 551 flow [2025-03-09 01:30:06,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:30:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:30:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2025-03-09 01:30:06,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2025-03-09 01:30:06,646 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 169 flow. Second operand 9 states and 111 transitions. [2025-03-09 01:30:06,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 551 flow [2025-03-09 01:30:06,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 504 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-09 01:30:06,650 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 346 flow [2025-03-09 01:30:06,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=346, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2025-03-09 01:30:06,651 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 26 predicate places. [2025-03-09 01:30:06,651 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 346 flow [2025-03-09 01:30:06,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 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) [2025-03-09 01:30:06,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:06,652 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:06,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 01:30:06,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:06,853 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:06,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:06,853 INFO L85 PathProgramCache]: Analyzing trace with hash -620629203, now seen corresponding path program 2 times [2025-03-09 01:30:06,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:06,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077250029] [2025-03-09 01:30:06,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:06,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:06,857 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-09 01:30:06,860 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:30:06,860 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:06,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:06,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:06,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077250029] [2025-03-09 01:30:06,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077250029] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:06,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490360110] [2025-03-09 01:30:06,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:06,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:06,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:06,934 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) [2025-03-09 01:30:06,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 01:30:06,961 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-09 01:30:06,969 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:30:06,970 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:06,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:06,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 01:30:06,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:07,034 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:07,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490360110] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:07,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:07,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 10 [2025-03-09 01:30:07,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221317630] [2025-03-09 01:30:07,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:07,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 01:30:07,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:07,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 01:30:07,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-03-09 01:30:07,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:07,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 346 flow. Second operand has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 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) [2025-03-09 01:30:07,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:07,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:07,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:07,202 INFO L124 PetriNetUnfolderBase]: 143/289 cut-off events. [2025-03-09 01:30:07,202 INFO L125 PetriNetUnfolderBase]: For 1350/1350 co-relation queries the response was YES. [2025-03-09 01:30:07,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 289 events. 143/289 cut-off events. For 1350/1350 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1133 event pairs, 4 based on Foata normal form. 15/303 useless extension candidates. Maximal degree in co-relation 1382. Up to 91 conditions per place. [2025-03-09 01:30:07,209 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 44 selfloop transitions, 32 changer transitions 14/93 dead transitions. [2025-03-09 01:30:07,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 931 flow [2025-03-09 01:30:07,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 01:30:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 01:30:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2025-03-09 01:30:07,210 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2025-03-09 01:30:07,210 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 346 flow. Second operand 12 states and 139 transitions. [2025-03-09 01:30:07,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 931 flow [2025-03-09 01:30:07,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 93 transitions, 858 flow, removed 35 selfloop flow, removed 2 redundant places. [2025-03-09 01:30:07,214 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 598 flow [2025-03-09 01:30:07,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=598, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2025-03-09 01:30:07,215 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 43 predicate places. [2025-03-09 01:30:07,215 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 598 flow [2025-03-09 01:30:07,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 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) [2025-03-09 01:30:07,215 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:07,215 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:07,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:07,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:07,416 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:07,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:07,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1062750689, now seen corresponding path program 3 times [2025-03-09 01:30:07,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:07,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005754734] [2025-03-09 01:30:07,417 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:30:07,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:07,423 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:30:07,427 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:30:07,427 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:30:07,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:07,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:07,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005754734] [2025-03-09 01:30:07,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005754734] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:07,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003272022] [2025-03-09 01:30:07,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:30:07,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:07,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:07,470 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) [2025-03-09 01:30:07,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 01:30:07,496 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:30:07,505 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:30:07,506 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:30:07,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:07,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 01:30:07,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:07,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:07,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003272022] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:07,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:07,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-09 01:30:07,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655844882] [2025-03-09 01:30:07,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:07,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:30:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:07,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:30:07,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:30:07,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:07,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 598 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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) [2025-03-09 01:30:07,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:07,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:07,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:07,711 INFO L124 PetriNetUnfolderBase]: 148/310 cut-off events. [2025-03-09 01:30:07,711 INFO L125 PetriNetUnfolderBase]: For 2977/2977 co-relation queries the response was YES. [2025-03-09 01:30:07,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1865 conditions, 310 events. 148/310 cut-off events. For 2977/2977 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1263 event pairs, 4 based on Foata normal form. 9/318 useless extension candidates. Maximal degree in co-relation 1749. Up to 106 conditions per place. [2025-03-09 01:30:07,714 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 58 selfloop transitions, 28 changer transitions 6/95 dead transitions. [2025-03-09 01:30:07,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 1147 flow [2025-03-09 01:30:07,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:30:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:30:07,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2025-03-09 01:30:07,715 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2025-03-09 01:30:07,715 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 598 flow. Second operand 9 states and 107 transitions. [2025-03-09 01:30:07,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 1147 flow [2025-03-09 01:30:07,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 1029 flow, removed 56 selfloop flow, removed 4 redundant places. [2025-03-09 01:30:07,725 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 795 flow [2025-03-09 01:30:07,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=795, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2025-03-09 01:30:07,727 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 49 predicate places. [2025-03-09 01:30:07,727 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 795 flow [2025-03-09 01:30:07,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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) [2025-03-09 01:30:07,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:07,728 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:07,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:07,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:07,929 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:07,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1541913525, now seen corresponding path program 4 times [2025-03-09 01:30:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:07,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627584891] [2025-03-09 01:30:07,929 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:30:07,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:07,933 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:30:07,936 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:30:07,936 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:30:07,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:07,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:07,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627584891] [2025-03-09 01:30:07,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627584891] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:07,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098393966] [2025-03-09 01:30:07,975 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:30:07,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:07,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:07,977 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) [2025-03-09 01:30:07,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 01:30:08,000 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:30:08,009 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:30:08,010 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:30:08,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:08,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 01:30:08,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:08,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:08,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098393966] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:08,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:08,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2025-03-09 01:30:08,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73527528] [2025-03-09 01:30:08,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:08,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 01:30:08,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:08,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 01:30:08,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2025-03-09 01:30:08,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:08,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 795 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2025-03-09 01:30:08,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:08,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:08,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:08,256 INFO L124 PetriNetUnfolderBase]: 149/320 cut-off events. [2025-03-09 01:30:08,256 INFO L125 PetriNetUnfolderBase]: For 3640/3640 co-relation queries the response was YES. [2025-03-09 01:30:08,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 320 events. 149/320 cut-off events. For 3640/3640 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1345 event pairs, 3 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 1788. Up to 119 conditions per place. [2025-03-09 01:30:08,260 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 66 selfloop transitions, 37 changer transitions 0/106 dead transitions. [2025-03-09 01:30:08,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 1291 flow [2025-03-09 01:30:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 01:30:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 01:30:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2025-03-09 01:30:08,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2025-03-09 01:30:08,270 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 795 flow. Second operand 11 states and 128 transitions. [2025-03-09 01:30:08,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 1291 flow [2025-03-09 01:30:08,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 106 transitions, 1151 flow, removed 66 selfloop flow, removed 2 redundant places. [2025-03-09 01:30:08,281 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 924 flow [2025-03-09 01:30:08,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=924, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2025-03-09 01:30:08,281 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 61 predicate places. [2025-03-09 01:30:08,281 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 924 flow [2025-03-09 01:30:08,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2025-03-09 01:30:08,282 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:08,282 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:08,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 01:30:08,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:08,486 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:08,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:08,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1329214367, now seen corresponding path program 5 times [2025-03-09 01:30:08,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:08,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796469255] [2025-03-09 01:30:08,487 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:30:08,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:08,490 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:30:08,493 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:30:08,493 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:08,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:08,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:08,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796469255] [2025-03-09 01:30:08,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796469255] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:08,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394414483] [2025-03-09 01:30:08,523 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:30:08,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:08,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:08,525 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) [2025-03-09 01:30:08,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 01:30:08,549 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:30:08,557 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:30:08,557 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:08,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:08,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 01:30:08,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:08,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:08,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394414483] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:08,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:08,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-09 01:30:08,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465692042] [2025-03-09 01:30:08,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:08,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 01:30:08,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:08,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 01:30:08,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-03-09 01:30:08,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:08,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 924 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2025-03-09 01:30:08,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:08,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:08,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:08,789 INFO L124 PetriNetUnfolderBase]: 187/410 cut-off events. [2025-03-09 01:30:08,790 INFO L125 PetriNetUnfolderBase]: For 4216/4216 co-relation queries the response was YES. [2025-03-09 01:30:08,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2533 conditions, 410 events. 187/410 cut-off events. For 4216/4216 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1877 event pairs, 5 based on Foata normal form. 10/419 useless extension candidates. Maximal degree in co-relation 2331. Up to 196 conditions per place. [2025-03-09 01:30:08,793 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 73 selfloop transitions, 45 changer transitions 0/121 dead transitions. [2025-03-09 01:30:08,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 121 transitions, 1647 flow [2025-03-09 01:30:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 01:30:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 01:30:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2025-03-09 01:30:08,794 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55 [2025-03-09 01:30:08,794 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 924 flow. Second operand 12 states and 132 transitions. [2025-03-09 01:30:08,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 121 transitions, 1647 flow [2025-03-09 01:30:08,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 121 transitions, 1512 flow, removed 56 selfloop flow, removed 4 redundant places. [2025-03-09 01:30:08,804 INFO L231 Difference]: Finished difference. Result has 96 places, 97 transitions, 1341 flow [2025-03-09 01:30:08,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1341, PETRI_PLACES=96, PETRI_TRANSITIONS=97} [2025-03-09 01:30:08,805 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 74 predicate places. [2025-03-09 01:30:08,805 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 97 transitions, 1341 flow [2025-03-09 01:30:08,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2025-03-09 01:30:08,805 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:08,806 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:08,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:09,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:09,008 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:09,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:09,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1682874866, now seen corresponding path program 6 times [2025-03-09 01:30:09,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:09,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568634995] [2025-03-09 01:30:09,010 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:30:09,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:09,014 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:30:09,017 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:30:09,017 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:30:09,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:09,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:09,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568634995] [2025-03-09 01:30:09,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568634995] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:09,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288249991] [2025-03-09 01:30:09,049 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:30:09,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:09,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:09,051 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) [2025-03-09 01:30:09,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 01:30:09,073 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:30:09,081 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:30:09,081 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:30:09,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:09,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 01:30:09,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:09,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:09,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288249991] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:09,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:09,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2025-03-09 01:30:09,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977945645] [2025-03-09 01:30:09,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:09,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 01:30:09,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:09,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 01:30:09,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2025-03-09 01:30:09,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:09,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 97 transitions, 1341 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2025-03-09 01:30:09,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:09,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:09,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:09,357 INFO L124 PetriNetUnfolderBase]: 205/447 cut-off events. [2025-03-09 01:30:09,357 INFO L125 PetriNetUnfolderBase]: For 5017/5017 co-relation queries the response was YES. [2025-03-09 01:30:09,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2883 conditions, 447 events. 205/447 cut-off events. For 5017/5017 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2098 event pairs, 4 based on Foata normal form. 5/451 useless extension candidates. Maximal degree in co-relation 2690. Up to 150 conditions per place. [2025-03-09 01:30:09,360 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 90 selfloop transitions, 51 changer transitions 0/144 dead transitions. [2025-03-09 01:30:09,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 144 transitions, 2014 flow [2025-03-09 01:30:09,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 01:30:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 01:30:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2025-03-09 01:30:09,361 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2025-03-09 01:30:09,361 INFO L175 Difference]: Start difference. First operand has 96 places, 97 transitions, 1341 flow. Second operand 11 states and 128 transitions. [2025-03-09 01:30:09,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 144 transitions, 2014 flow [2025-03-09 01:30:09,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 144 transitions, 1918 flow, removed 32 selfloop flow, removed 3 redundant places. [2025-03-09 01:30:09,376 INFO L231 Difference]: Finished difference. Result has 107 places, 113 transitions, 1706 flow [2025-03-09 01:30:09,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1706, PETRI_PLACES=107, PETRI_TRANSITIONS=113} [2025-03-09 01:30:09,378 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 85 predicate places. [2025-03-09 01:30:09,378 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 113 transitions, 1706 flow [2025-03-09 01:30:09,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2025-03-09 01:30:09,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:09,378 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:09,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 01:30:09,583 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,SelfDestructingSolverStorable10 [2025-03-09 01:30:09,583 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:09,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:09,583 INFO L85 PathProgramCache]: Analyzing trace with hash -898325362, now seen corresponding path program 7 times [2025-03-09 01:30:09,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:09,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918238036] [2025-03-09 01:30:09,584 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:30:09,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:09,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 01:30:09,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:30:09,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:09,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:09,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:09,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918238036] [2025-03-09 01:30:09,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918238036] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:09,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693204363] [2025-03-09 01:30:09,673 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:30:09,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:09,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:09,681 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) [2025-03-09 01:30:09,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 01:30:09,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 01:30:09,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:30:09,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:09,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:09,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 01:30:09,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:09,818 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:09,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693204363] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:09,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:09,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-03-09 01:30:09,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679457558] [2025-03-09 01:30:09,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:09,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 01:30:09,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:09,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 01:30:09,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2025-03-09 01:30:09,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:09,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 113 transitions, 1706 flow. Second operand has 19 states, 19 states have (on average 8.105263157894736) internal successors, (154), 19 states have internal predecessors, (154), 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) [2025-03-09 01:30:09,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:09,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:09,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:10,224 INFO L124 PetriNetUnfolderBase]: 296/632 cut-off events. [2025-03-09 01:30:10,224 INFO L125 PetriNetUnfolderBase]: For 8655/8655 co-relation queries the response was YES. [2025-03-09 01:30:10,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4471 conditions, 632 events. 296/632 cut-off events. For 8655/8655 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3273 event pairs, 1 based on Foata normal form. 24/655 useless extension candidates. Maximal degree in co-relation 4185. Up to 244 conditions per place. [2025-03-09 01:30:10,228 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 117 selfloop transitions, 71 changer transitions 12/203 dead transitions. [2025-03-09 01:30:10,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 203 transitions, 3194 flow [2025-03-09 01:30:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 01:30:10,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-09 01:30:10,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 214 transitions. [2025-03-09 01:30:10,230 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5631578947368421 [2025-03-09 01:30:10,230 INFO L175 Difference]: Start difference. First operand has 107 places, 113 transitions, 1706 flow. Second operand 19 states and 214 transitions. [2025-03-09 01:30:10,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 203 transitions, 3194 flow [2025-03-09 01:30:10,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 203 transitions, 3035 flow, removed 76 selfloop flow, removed 2 redundant places. [2025-03-09 01:30:10,250 INFO L231 Difference]: Finished difference. Result has 135 places, 151 transitions, 2540 flow [2025-03-09 01:30:10,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2540, PETRI_PLACES=135, PETRI_TRANSITIONS=151} [2025-03-09 01:30:10,251 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 113 predicate places. [2025-03-09 01:30:10,251 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 151 transitions, 2540 flow [2025-03-09 01:30:10,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.105263157894736) internal successors, (154), 19 states have internal predecessors, (154), 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) [2025-03-09 01:30:10,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:10,251 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:10,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:10,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:10,452 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:10,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1773699372, now seen corresponding path program 8 times [2025-03-09 01:30:10,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:10,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144534240] [2025-03-09 01:30:10,452 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:10,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:10,455 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-09 01:30:10,457 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:30:10,457 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:10,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:10,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:10,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144534240] [2025-03-09 01:30:10,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144534240] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:10,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220906116] [2025-03-09 01:30:10,521 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:10,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:10,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:10,523 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) [2025-03-09 01:30:10,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 01:30:10,545 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-09 01:30:10,553 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:30:10,553 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:10,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:10,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:30:10,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:10,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:30:10,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220906116] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:10,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:10,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 14 [2025-03-09 01:30:10,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675916799] [2025-03-09 01:30:10,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:10,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 01:30:10,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:10,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 01:30:10,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-03-09 01:30:10,649 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:10,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 151 transitions, 2540 flow. Second operand has 15 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 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) [2025-03-09 01:30:10,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:10,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:10,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:10,929 INFO L124 PetriNetUnfolderBase]: 463/914 cut-off events. [2025-03-09 01:30:10,929 INFO L125 PetriNetUnfolderBase]: For 19228/19228 co-relation queries the response was YES. [2025-03-09 01:30:10,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7379 conditions, 914 events. 463/914 cut-off events. For 19228/19228 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4945 event pairs, 2 based on Foata normal form. 41/954 useless extension candidates. Maximal degree in co-relation 7078. Up to 240 conditions per place. [2025-03-09 01:30:10,937 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 98 selfloop transitions, 162 changer transitions 17/280 dead transitions. [2025-03-09 01:30:10,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 280 transitions, 5121 flow [2025-03-09 01:30:10,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 01:30:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-09 01:30:10,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 194 transitions. [2025-03-09 01:30:10,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.60625 [2025-03-09 01:30:10,939 INFO L175 Difference]: Start difference. First operand has 135 places, 151 transitions, 2540 flow. Second operand 16 states and 194 transitions. [2025-03-09 01:30:10,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 280 transitions, 5121 flow [2025-03-09 01:30:10,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 280 transitions, 4674 flow, removed 179 selfloop flow, removed 6 redundant places. [2025-03-09 01:30:10,983 INFO L231 Difference]: Finished difference. Result has 151 places, 227 transitions, 4318 flow [2025-03-09 01:30:10,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2137, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4318, PETRI_PLACES=151, PETRI_TRANSITIONS=227} [2025-03-09 01:30:10,985 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 129 predicate places. [2025-03-09 01:30:10,985 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 227 transitions, 4318 flow [2025-03-09 01:30:10,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 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) [2025-03-09 01:30:10,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:10,986 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:10,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 01:30:11,186 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,SelfDestructingSolverStorable12 [2025-03-09 01:30:11,186 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:11,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:11,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1904251862, now seen corresponding path program 9 times [2025-03-09 01:30:11,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:11,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124607764] [2025-03-09 01:30:11,187 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:30:11,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:11,189 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-03-09 01:30:11,192 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:30:11,192 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:30:11,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:11,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:11,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124607764] [2025-03-09 01:30:11,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124607764] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:11,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586285556] [2025-03-09 01:30:11,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:30:11,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:11,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:11,265 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) [2025-03-09 01:30:11,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 01:30:11,288 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-03-09 01:30:11,296 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:30:11,296 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:30:11,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:11,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:30:11,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:11,369 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:30:11,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586285556] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:11,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:11,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 4] total 15 [2025-03-09 01:30:11,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928790105] [2025-03-09 01:30:11,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:11,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 01:30:11,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:11,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 01:30:11,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-03-09 01:30:11,399 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:11,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 227 transitions, 4318 flow. Second operand has 16 states, 16 states have (on average 8.4375) internal successors, (135), 16 states have internal predecessors, (135), 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) [2025-03-09 01:30:11,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:11,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:11,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:11,685 INFO L124 PetriNetUnfolderBase]: 536/1066 cut-off events. [2025-03-09 01:30:11,686 INFO L125 PetriNetUnfolderBase]: For 24313/24313 co-relation queries the response was YES. [2025-03-09 01:30:11,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9122 conditions, 1066 events. 536/1066 cut-off events. For 24313/24313 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6018 event pairs, 26 based on Foata normal form. 32/1097 useless extension candidates. Maximal degree in co-relation 8835. Up to 749 conditions per place. [2025-03-09 01:30:11,694 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 227 selfloop transitions, 74 changer transitions 9/313 dead transitions. [2025-03-09 01:30:11,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 313 transitions, 6393 flow [2025-03-09 01:30:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 01:30:11,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 01:30:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2025-03-09 01:30:11,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6045454545454545 [2025-03-09 01:30:11,696 INFO L175 Difference]: Start difference. First operand has 151 places, 227 transitions, 4318 flow. Second operand 11 states and 133 transitions. [2025-03-09 01:30:11,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 313 transitions, 6393 flow [2025-03-09 01:30:11,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 313 transitions, 5261 flow, removed 552 selfloop flow, removed 5 redundant places. [2025-03-09 01:30:11,777 INFO L231 Difference]: Finished difference. Result has 160 places, 270 transitions, 4494 flow [2025-03-09 01:30:11,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3540, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4494, PETRI_PLACES=160, PETRI_TRANSITIONS=270} [2025-03-09 01:30:11,778 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 138 predicate places. [2025-03-09 01:30:11,778 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 270 transitions, 4494 flow [2025-03-09 01:30:11,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.4375) internal successors, (135), 16 states have internal predecessors, (135), 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) [2025-03-09 01:30:11,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:11,779 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:11,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:11,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-09 01:30:11,979 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:11,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:11,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1672632814, now seen corresponding path program 10 times [2025-03-09 01:30:11,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:11,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091340245] [2025-03-09 01:30:11,984 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:30:11,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:11,986 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-09 01:30:11,988 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:11,988 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:30:11,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:12,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:12,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091340245] [2025-03-09 01:30:12,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091340245] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:12,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360089500] [2025-03-09 01:30:12,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:30:12,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:12,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:12,032 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:12,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 01:30:12,053 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-09 01:30:12,060 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:12,060 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:30:12,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:12,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:30:12,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:12,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:12,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360089500] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:12,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:12,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-09 01:30:12,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207199807] [2025-03-09 01:30:12,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:12,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 01:30:12,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:12,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 01:30:12,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2025-03-09 01:30:12,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:12,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 270 transitions, 4494 flow. Second operand has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 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) [2025-03-09 01:30:12,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:12,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:12,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:12,402 INFO L124 PetriNetUnfolderBase]: 650/1314 cut-off events. [2025-03-09 01:30:12,402 INFO L125 PetriNetUnfolderBase]: For 18153/18153 co-relation queries the response was YES. [2025-03-09 01:30:12,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9786 conditions, 1314 events. 650/1314 cut-off events. For 18153/18153 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7831 event pairs, 11 based on Foata normal form. 36/1349 useless extension candidates. Maximal degree in co-relation 9570. Up to 424 conditions per place. [2025-03-09 01:30:12,429 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 181 selfloop transitions, 164 changer transitions 39/387 dead transitions. [2025-03-09 01:30:12,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 387 transitions, 7058 flow [2025-03-09 01:30:12,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 01:30:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 01:30:12,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2025-03-09 01:30:12,430 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5875 [2025-03-09 01:30:12,430 INFO L175 Difference]: Start difference. First operand has 160 places, 270 transitions, 4494 flow. Second operand 12 states and 141 transitions. [2025-03-09 01:30:12,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 387 transitions, 7058 flow [2025-03-09 01:30:12,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 387 transitions, 6883 flow, removed 81 selfloop flow, removed 2 redundant places. [2025-03-09 01:30:12,503 INFO L231 Difference]: Finished difference. Result has 177 places, 316 transitions, 5913 flow [2025-03-09 01:30:12,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4317, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5913, PETRI_PLACES=177, PETRI_TRANSITIONS=316} [2025-03-09 01:30:12,504 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 155 predicate places. [2025-03-09 01:30:12,504 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 316 transitions, 5913 flow [2025-03-09 01:30:12,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 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) [2025-03-09 01:30:12,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:12,505 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:12,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:12,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-09 01:30:12,705 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:12,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:12,706 INFO L85 PathProgramCache]: Analyzing trace with hash 709211746, now seen corresponding path program 11 times [2025-03-09 01:30:12,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:12,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708429221] [2025-03-09 01:30:12,706 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:30:12,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:12,708 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-03-09 01:30:12,712 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:12,712 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 01:30:12,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:12,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708429221] [2025-03-09 01:30:12,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708429221] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389091328] [2025-03-09 01:30:12,748 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:30:12,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:12,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:12,750 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:12,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 01:30:12,772 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-03-09 01:30:12,781 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:12,781 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 01:30:12,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:12,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:30:12,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:12,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:12,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389091328] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:12,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:12,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-03-09 01:30:12,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131735526] [2025-03-09 01:30:12,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:12,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 01:30:12,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:12,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 01:30:12,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2025-03-09 01:30:12,884 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:12,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 316 transitions, 5913 flow. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2025-03-09 01:30:12,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:12,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:12,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:13,226 INFO L124 PetriNetUnfolderBase]: 630/1306 cut-off events. [2025-03-09 01:30:13,227 INFO L125 PetriNetUnfolderBase]: For 17533/17533 co-relation queries the response was YES. [2025-03-09 01:30:13,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10465 conditions, 1306 events. 630/1306 cut-off events. For 17533/17533 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7892 event pairs, 14 based on Foata normal form. 8/1313 useless extension candidates. Maximal degree in co-relation 10234. Up to 451 conditions per place. [2025-03-09 01:30:13,238 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 175 selfloop transitions, 219 changer transitions 1/398 dead transitions. [2025-03-09 01:30:13,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 398 transitions, 7833 flow [2025-03-09 01:30:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 01:30:13,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-09 01:30:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 170 transitions. [2025-03-09 01:30:13,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2025-03-09 01:30:13,240 INFO L175 Difference]: Start difference. First operand has 177 places, 316 transitions, 5913 flow. Second operand 16 states and 170 transitions. [2025-03-09 01:30:13,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 398 transitions, 7833 flow [2025-03-09 01:30:13,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 398 transitions, 7378 flow, removed 220 selfloop flow, removed 2 redundant places. [2025-03-09 01:30:13,365 INFO L231 Difference]: Finished difference. Result has 197 places, 358 transitions, 7181 flow [2025-03-09 01:30:13,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5590, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7181, PETRI_PLACES=197, PETRI_TRANSITIONS=358} [2025-03-09 01:30:13,365 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 175 predicate places. [2025-03-09 01:30:13,365 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 358 transitions, 7181 flow [2025-03-09 01:30:13,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2025-03-09 01:30:13,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:13,366 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:13,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:13,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-09 01:30:13,566 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:13,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:13,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1486361345, now seen corresponding path program 12 times [2025-03-09 01:30:13,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:13,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001166504] [2025-03-09 01:30:13,567 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:30:13,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:13,569 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-09 01:30:13,571 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:13,571 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:30:13,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:13,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:13,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:13,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001166504] [2025-03-09 01:30:13,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001166504] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:13,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689240121] [2025-03-09 01:30:13,608 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:30:13,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:13,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:13,610 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:13,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 01:30:13,633 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-09 01:30:13,641 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:13,641 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:30:13,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:13,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:30:13,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:13,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:13,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:13,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689240121] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:13,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:13,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-03-09 01:30:13,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954994637] [2025-03-09 01:30:13,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:13,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 01:30:13,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:13,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 01:30:13,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2025-03-09 01:30:13,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:13,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 358 transitions, 7181 flow. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2025-03-09 01:30:13,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:13,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:13,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:14,095 INFO L124 PetriNetUnfolderBase]: 630/1290 cut-off events. [2025-03-09 01:30:14,095 INFO L125 PetriNetUnfolderBase]: For 19056/19056 co-relation queries the response was YES. [2025-03-09 01:30:14,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10886 conditions, 1290 events. 630/1290 cut-off events. For 19056/19056 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7689 event pairs, 24 based on Foata normal form. 14/1303 useless extension candidates. Maximal degree in co-relation 10726. Up to 406 conditions per place. [2025-03-09 01:30:14,114 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 217 selfloop transitions, 160 changer transitions 16/396 dead transitions. [2025-03-09 01:30:14,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 396 transitions, 8350 flow [2025-03-09 01:30:14,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 01:30:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-09 01:30:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 171 transitions. [2025-03-09 01:30:14,115 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.534375 [2025-03-09 01:30:14,115 INFO L175 Difference]: Start difference. First operand has 197 places, 358 transitions, 7181 flow. Second operand 16 states and 171 transitions. [2025-03-09 01:30:14,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 396 transitions, 8350 flow [2025-03-09 01:30:14,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 396 transitions, 8087 flow, removed 103 selfloop flow, removed 4 redundant places. [2025-03-09 01:30:14,225 INFO L231 Difference]: Finished difference. Result has 212 places, 352 transitions, 7253 flow [2025-03-09 01:30:14,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6691, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7253, PETRI_PLACES=212, PETRI_TRANSITIONS=352} [2025-03-09 01:30:14,225 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 190 predicate places. [2025-03-09 01:30:14,225 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 352 transitions, 7253 flow [2025-03-09 01:30:14,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2025-03-09 01:30:14,225 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:14,225 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:14,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:14,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:14,428 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:14,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:14,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1503118416, now seen corresponding path program 13 times [2025-03-09 01:30:14,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:14,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645240824] [2025-03-09 01:30:14,428 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:30:14,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:14,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 01:30:14,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:14,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:14,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:30:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645240824] [2025-03-09 01:30:14,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645240824] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497133708] [2025-03-09 01:30:14,481 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:30:14,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:14,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:14,482 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:14,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 01:30:14,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 01:30:14,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:14,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:14,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:14,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:30:14,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:14,567 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:14,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497133708] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:14,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:14,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-03-09 01:30:14,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299305117] [2025-03-09 01:30:14,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:14,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 01:30:14,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:14,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 01:30:14,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2025-03-09 01:30:14,624 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:14,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 352 transitions, 7253 flow. Second operand has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 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) [2025-03-09 01:30:14,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:14,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:14,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:14,884 INFO L124 PetriNetUnfolderBase]: 599/1185 cut-off events. [2025-03-09 01:30:14,885 INFO L125 PetriNetUnfolderBase]: For 16897/16897 co-relation queries the response was YES. [2025-03-09 01:30:14,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10270 conditions, 1185 events. 599/1185 cut-off events. For 16897/16897 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6760 event pairs, 14 based on Foata normal form. 21/1205 useless extension candidates. Maximal degree in co-relation 10131. Up to 435 conditions per place. [2025-03-09 01:30:14,894 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 204 selfloop transitions, 160 changer transitions 11/378 dead transitions. [2025-03-09 01:30:14,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 378 transitions, 8120 flow [2025-03-09 01:30:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 01:30:14,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-09 01:30:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 150 transitions. [2025-03-09 01:30:14,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2025-03-09 01:30:14,897 INFO L175 Difference]: Start difference. First operand has 212 places, 352 transitions, 7253 flow. Second operand 14 states and 150 transitions. [2025-03-09 01:30:14,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 378 transitions, 8120 flow [2025-03-09 01:30:15,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 378 transitions, 7560 flow, removed 135 selfloop flow, removed 14 redundant places. [2025-03-09 01:30:15,023 INFO L231 Difference]: Finished difference. Result has 211 places, 340 transitions, 6674 flow [2025-03-09 01:30:15,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6413, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6674, PETRI_PLACES=211, PETRI_TRANSITIONS=340} [2025-03-09 01:30:15,024 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 189 predicate places. [2025-03-09 01:30:15,024 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 340 transitions, 6674 flow [2025-03-09 01:30:15,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 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) [2025-03-09 01:30:15,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:15,024 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:15,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:15,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 01:30:15,224 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:15,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:15,225 INFO L85 PathProgramCache]: Analyzing trace with hash 825645478, now seen corresponding path program 14 times [2025-03-09 01:30:15,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:15,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800023765] [2025-03-09 01:30:15,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:15,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:15,227 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-09 01:30:15,230 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:15,230 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:15,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:15,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:15,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800023765] [2025-03-09 01:30:15,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800023765] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:15,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908495087] [2025-03-09 01:30:15,282 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:15,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:15,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:15,284 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:15,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 01:30:15,305 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-09 01:30:15,314 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:15,315 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:15,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:15,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:30:15,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:15,369 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:15,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908495087] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:15,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:15,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-03-09 01:30:15,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197694930] [2025-03-09 01:30:15,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:15,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 01:30:15,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:15,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 01:30:15,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2025-03-09 01:30:15,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:15,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 340 transitions, 6674 flow. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2025-03-09 01:30:15,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:15,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:15,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:15,735 INFO L124 PetriNetUnfolderBase]: 690/1370 cut-off events. [2025-03-09 01:30:15,735 INFO L125 PetriNetUnfolderBase]: For 14090/14090 co-relation queries the response was YES. [2025-03-09 01:30:15,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11634 conditions, 1370 events. 690/1370 cut-off events. For 14090/14090 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8070 event pairs, 19 based on Foata normal form. 6/1375 useless extension candidates. Maximal degree in co-relation 11434. Up to 753 conditions per place. [2025-03-09 01:30:15,744 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 254 selfloop transitions, 188 changer transitions 0/445 dead transitions. [2025-03-09 01:30:15,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 445 transitions, 9262 flow [2025-03-09 01:30:15,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 01:30:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-09 01:30:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 196 transitions. [2025-03-09 01:30:15,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2025-03-09 01:30:15,745 INFO L175 Difference]: Start difference. First operand has 211 places, 340 transitions, 6674 flow. Second operand 19 states and 196 transitions. [2025-03-09 01:30:15,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 445 transitions, 9262 flow [2025-03-09 01:30:15,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 445 transitions, 8949 flow, removed 79 selfloop flow, removed 8 redundant places. [2025-03-09 01:30:15,844 INFO L231 Difference]: Finished difference. Result has 229 places, 409 transitions, 8533 flow [2025-03-09 01:30:15,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6430, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8533, PETRI_PLACES=229, PETRI_TRANSITIONS=409} [2025-03-09 01:30:15,844 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 207 predicate places. [2025-03-09 01:30:15,844 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 409 transitions, 8533 flow [2025-03-09 01:30:15,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2025-03-09 01:30:15,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:15,845 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:15,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-09 01:30:16,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:16,047 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:16,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:16,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2093815369, now seen corresponding path program 15 times [2025-03-09 01:30:16,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:16,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197247005] [2025-03-09 01:30:16,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:30:16,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:16,050 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-03-09 01:30:16,051 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:16,051 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:30:16,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:16,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197247005] [2025-03-09 01:30:16,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197247005] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761640978] [2025-03-09 01:30:16,080 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:30:16,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:16,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:16,083 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:16,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 01:30:16,108 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-03-09 01:30:16,117 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:16,117 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:30:16,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:16,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:30:16,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:16,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:16,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761640978] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:16,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:16,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-03-09 01:30:16,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914934895] [2025-03-09 01:30:16,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:16,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 01:30:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:16,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 01:30:16,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2025-03-09 01:30:16,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:16,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 409 transitions, 8533 flow. Second operand has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 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) [2025-03-09 01:30:16,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:16,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:16,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:16,510 INFO L124 PetriNetUnfolderBase]: 724/1457 cut-off events. [2025-03-09 01:30:16,510 INFO L125 PetriNetUnfolderBase]: For 17206/17206 co-relation queries the response was YES. [2025-03-09 01:30:16,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12879 conditions, 1457 events. 724/1457 cut-off events. For 17206/17206 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 8833 event pairs, 29 based on Foata normal form. 4/1460 useless extension candidates. Maximal degree in co-relation 12669. Up to 457 conditions per place. [2025-03-09 01:30:16,521 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 251 selfloop transitions, 213 changer transitions 4/471 dead transitions. [2025-03-09 01:30:16,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 471 transitions, 10440 flow [2025-03-09 01:30:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-09 01:30:16,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-09 01:30:16,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 148 transitions. [2025-03-09 01:30:16,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2025-03-09 01:30:16,523 INFO L175 Difference]: Start difference. First operand has 229 places, 409 transitions, 8533 flow. Second operand 14 states and 148 transitions. [2025-03-09 01:30:16,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 471 transitions, 10440 flow [2025-03-09 01:30:16,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 471 transitions, 10272 flow, removed 33 selfloop flow, removed 3 redundant places. [2025-03-09 01:30:16,684 INFO L231 Difference]: Finished difference. Result has 243 places, 437 transitions, 9817 flow [2025-03-09 01:30:16,684 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8356, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9817, PETRI_PLACES=243, PETRI_TRANSITIONS=437} [2025-03-09 01:30:16,684 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 221 predicate places. [2025-03-09 01:30:16,684 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 437 transitions, 9817 flow [2025-03-09 01:30:16,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 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) [2025-03-09 01:30:16,685 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:16,685 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:16,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:16,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:16,889 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:16,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:16,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1935235598, now seen corresponding path program 16 times [2025-03-09 01:30:16,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:16,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583383423] [2025-03-09 01:30:16,889 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:30:16,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:16,891 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-09 01:30:16,893 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:16,893 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:30:16,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:16,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:16,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583383423] [2025-03-09 01:30:16,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583383423] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:16,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549100692] [2025-03-09 01:30:16,927 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:30:16,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:16,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:16,929 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:16,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 01:30:16,950 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-09 01:30:16,958 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:16,958 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:30:16,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:16,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:30:16,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:16,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:17,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549100692] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:17,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:17,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-03-09 01:30:17,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849408012] [2025-03-09 01:30:17,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:17,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 01:30:17,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:17,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 01:30:17,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2025-03-09 01:30:17,048 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:17,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 437 transitions, 9817 flow. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2025-03-09 01:30:17,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:17,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:17,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:17,377 INFO L124 PetriNetUnfolderBase]: 738/1437 cut-off events. [2025-03-09 01:30:17,377 INFO L125 PetriNetUnfolderBase]: For 19179/19179 co-relation queries the response was YES. [2025-03-09 01:30:17,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13608 conditions, 1437 events. 738/1437 cut-off events. For 19179/19179 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8439 event pairs, 14 based on Foata normal form. 15/1451 useless extension candidates. Maximal degree in co-relation 13393. Up to 477 conditions per place. [2025-03-09 01:30:17,391 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 249 selfloop transitions, 217 changer transitions 7/476 dead transitions. [2025-03-09 01:30:17,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 476 transitions, 11246 flow [2025-03-09 01:30:17,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 01:30:17,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-09 01:30:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 165 transitions. [2025-03-09 01:30:17,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.515625 [2025-03-09 01:30:17,394 INFO L175 Difference]: Start difference. First operand has 243 places, 437 transitions, 9817 flow. Second operand 16 states and 165 transitions. [2025-03-09 01:30:17,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 476 transitions, 11246 flow [2025-03-09 01:30:17,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 476 transitions, 11067 flow, removed 85 selfloop flow, removed 3 redundant places. [2025-03-09 01:30:17,559 INFO L231 Difference]: Finished difference. Result has 255 places, 440 transitions, 10179 flow [2025-03-09 01:30:17,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9509, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10179, PETRI_PLACES=255, PETRI_TRANSITIONS=440} [2025-03-09 01:30:17,559 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 233 predicate places. [2025-03-09 01:30:17,559 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 440 transitions, 10179 flow [2025-03-09 01:30:17,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2025-03-09 01:30:17,560 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:17,560 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:17,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:17,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:17,760 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:17,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:17,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1147304383, now seen corresponding path program 17 times [2025-03-09 01:30:17,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:17,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645024701] [2025-03-09 01:30:17,761 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:30:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:17,763 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-03-09 01:30:17,766 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:17,766 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 01:30:17,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:17,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:17,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645024701] [2025-03-09 01:30:17,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645024701] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:17,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343492939] [2025-03-09 01:30:17,811 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:30:17,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:17,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:17,812 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:17,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-09 01:30:17,838 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-03-09 01:30:17,847 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:17,847 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 01:30:17,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:17,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:30:17,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:17,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:17,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343492939] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:17,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:17,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-09 01:30:17,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547250511] [2025-03-09 01:30:17,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:17,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 01:30:17,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:17,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 01:30:17,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2025-03-09 01:30:17,934 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:17,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 440 transitions, 10179 flow. Second operand has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 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) [2025-03-09 01:30:17,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:17,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:17,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:18,214 INFO L124 PetriNetUnfolderBase]: 714/1390 cut-off events. [2025-03-09 01:30:18,215 INFO L125 PetriNetUnfolderBase]: For 18478/18478 co-relation queries the response was YES. [2025-03-09 01:30:18,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13474 conditions, 1390 events. 714/1390 cut-off events. For 18478/18478 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8049 event pairs, 20 based on Foata normal form. 10/1399 useless extension candidates. Maximal degree in co-relation 13256. Up to 506 conditions per place. [2025-03-09 01:30:18,224 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 251 selfloop transitions, 181 changer transitions 25/460 dead transitions. [2025-03-09 01:30:18,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 460 transitions, 11171 flow [2025-03-09 01:30:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 01:30:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 01:30:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2025-03-09 01:30:18,225 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-03-09 01:30:18,225 INFO L175 Difference]: Start difference. First operand has 255 places, 440 transitions, 10179 flow. Second operand 12 states and 128 transitions. [2025-03-09 01:30:18,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 460 transitions, 11171 flow [2025-03-09 01:30:18,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 460 transitions, 10786 flow, removed 51 selfloop flow, removed 10 redundant places. [2025-03-09 01:30:18,347 INFO L231 Difference]: Finished difference. Result has 258 places, 412 transitions, 9540 flow [2025-03-09 01:30:18,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9717, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9540, PETRI_PLACES=258, PETRI_TRANSITIONS=412} [2025-03-09 01:30:18,348 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 236 predicate places. [2025-03-09 01:30:18,348 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 412 transitions, 9540 flow [2025-03-09 01:30:18,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 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) [2025-03-09 01:30:18,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:18,348 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:18,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:18,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:18,548 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:18,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash -307547768, now seen corresponding path program 18 times [2025-03-09 01:30:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:18,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31596144] [2025-03-09 01:30:18,549 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:30:18,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:18,551 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-09 01:30:18,553 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:18,553 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:30:18,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:18,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:18,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31596144] [2025-03-09 01:30:18,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31596144] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:18,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536736883] [2025-03-09 01:30:18,585 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:30:18,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:18,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:18,587 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:18,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 01:30:18,610 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-09 01:30:18,617 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:30:18,617 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:30:18,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:18,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:30:18,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:18,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:18,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536736883] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:18,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:18,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-03-09 01:30:18,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706693227] [2025-03-09 01:30:18,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:18,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 01:30:18,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:18,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 01:30:18,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2025-03-09 01:30:18,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:18,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 412 transitions, 9540 flow. Second operand has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 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) [2025-03-09 01:30:18,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:18,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:18,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:19,045 INFO L124 PetriNetUnfolderBase]: 745/1401 cut-off events. [2025-03-09 01:30:19,046 INFO L125 PetriNetUnfolderBase]: For 17403/17403 co-relation queries the response was YES. [2025-03-09 01:30:19,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13765 conditions, 1401 events. 745/1401 cut-off events. For 17403/17403 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7786 event pairs, 15 based on Foata normal form. 6/1406 useless extension candidates. Maximal degree in co-relation 13541. Up to 668 conditions per place. [2025-03-09 01:30:19,055 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 280 selfloop transitions, 189 changer transitions 4/476 dead transitions. [2025-03-09 01:30:19,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 476 transitions, 11532 flow [2025-03-09 01:30:19,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 01:30:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 01:30:19,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 180 transitions. [2025-03-09 01:30:19,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-09 01:30:19,055 INFO L175 Difference]: Start difference. First operand has 258 places, 412 transitions, 9540 flow. Second operand 18 states and 180 transitions. [2025-03-09 01:30:19,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 476 transitions, 11532 flow [2025-03-09 01:30:19,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 476 transitions, 11231 flow, removed 18 selfloop flow, removed 8 redundant places. [2025-03-09 01:30:19,179 INFO L231 Difference]: Finished difference. Result has 267 places, 442 transitions, 10357 flow [2025-03-09 01:30:19,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9181, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10357, PETRI_PLACES=267, PETRI_TRANSITIONS=442} [2025-03-09 01:30:19,180 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 245 predicate places. [2025-03-09 01:30:19,180 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 442 transitions, 10357 flow [2025-03-09 01:30:19,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.1875) internal successors, (131), 16 states have internal predecessors, (131), 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) [2025-03-09 01:30:19,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:19,180 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:19,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:19,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-03-09 01:30:19,381 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:19,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:19,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1462207585, now seen corresponding path program 19 times [2025-03-09 01:30:19,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:19,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095812401] [2025-03-09 01:30:19,381 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:30:19,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:19,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:30:19,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:30:19,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:19,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:19,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:19,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095812401] [2025-03-09 01:30:19,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095812401] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:19,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733789468] [2025-03-09 01:30:19,451 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:30:19,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:19,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:19,453 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:19,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-09 01:30:19,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:30:19,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:30:19,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:19,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:19,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 01:30:19,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:19,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:19,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733789468] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:19,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:19,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-03-09 01:30:19,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945893562] [2025-03-09 01:30:19,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:19,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-09 01:30:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:19,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 01:30:19,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2025-03-09 01:30:19,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:19,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 442 transitions, 10357 flow. Second operand has 25 states, 25 states have (on average 7.84) internal successors, (196), 25 states have internal predecessors, (196), 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) [2025-03-09 01:30:19,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:19,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:19,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:20,187 INFO L124 PetriNetUnfolderBase]: 842/1597 cut-off events. [2025-03-09 01:30:20,187 INFO L125 PetriNetUnfolderBase]: For 24769/24769 co-relation queries the response was YES. [2025-03-09 01:30:20,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15740 conditions, 1597 events. 842/1597 cut-off events. For 24769/24769 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9219 event pairs, 0 based on Foata normal form. 28/1624 useless extension candidates. Maximal degree in co-relation 15466. Up to 958 conditions per place. [2025-03-09 01:30:20,198 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 378 selfloop transitions, 170 changer transitions 8/559 dead transitions. [2025-03-09 01:30:20,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 559 transitions, 13150 flow [2025-03-09 01:30:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-09 01:30:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-09 01:30:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 281 transitions. [2025-03-09 01:30:20,199 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403846153846154 [2025-03-09 01:30:20,199 INFO L175 Difference]: Start difference. First operand has 267 places, 442 transitions, 10357 flow. Second operand 26 states and 281 transitions. [2025-03-09 01:30:20,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 559 transitions, 13150 flow [2025-03-09 01:30:20,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 559 transitions, 12685 flow, removed 70 selfloop flow, removed 11 redundant places. [2025-03-09 01:30:20,343 INFO L231 Difference]: Finished difference. Result has 294 places, 500 transitions, 11825 flow [2025-03-09 01:30:20,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9848, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=11825, PETRI_PLACES=294, PETRI_TRANSITIONS=500} [2025-03-09 01:30:20,344 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 272 predicate places. [2025-03-09 01:30:20,344 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 500 transitions, 11825 flow [2025-03-09 01:30:20,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.84) internal successors, (196), 25 states have internal predecessors, (196), 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) [2025-03-09 01:30:20,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:20,345 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:20,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:20,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-09 01:30:20,545 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:20,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:20,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1077118769, now seen corresponding path program 20 times [2025-03-09 01:30:20,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:20,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399015392] [2025-03-09 01:30:20,546 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:20,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:20,548 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:30:20,551 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:30:20,551 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:20,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:20,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399015392] [2025-03-09 01:30:20,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399015392] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:20,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845851844] [2025-03-09 01:30:20,614 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:20,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:20,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:20,616 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:20,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-09 01:30:20,642 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:30:20,650 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:30:20,650 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:20,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:20,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:30:20,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:20,741 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:20,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845851844] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:20,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:20,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 18 [2025-03-09 01:30:20,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206470814] [2025-03-09 01:30:20,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:20,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 01:30:20,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:20,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 01:30:20,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2025-03-09 01:30:20,777 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:20,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 500 transitions, 11825 flow. Second operand has 19 states, 19 states have (on average 8.368421052631579) internal successors, (159), 19 states have internal predecessors, (159), 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) [2025-03-09 01:30:20,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:20,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:20,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:21,313 INFO L124 PetriNetUnfolderBase]: 1071/2036 cut-off events. [2025-03-09 01:30:21,313 INFO L125 PetriNetUnfolderBase]: For 42522/42522 co-relation queries the response was YES. [2025-03-09 01:30:21,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20488 conditions, 2036 events. 1071/2036 cut-off events. For 42522/42522 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 12510 event pairs, 11 based on Foata normal form. 45/2080 useless extension candidates. Maximal degree in co-relation 20369. Up to 867 conditions per place. [2025-03-09 01:30:21,326 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 376 selfloop transitions, 270 changer transitions 42/691 dead transitions. [2025-03-09 01:30:21,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 691 transitions, 16882 flow [2025-03-09 01:30:21,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-09 01:30:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-09 01:30:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 297 transitions. [2025-03-09 01:30:21,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5711538461538461 [2025-03-09 01:30:21,327 INFO L175 Difference]: Start difference. First operand has 294 places, 500 transitions, 11825 flow. Second operand 26 states and 297 transitions. [2025-03-09 01:30:21,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 691 transitions, 16882 flow [2025-03-09 01:30:21,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 691 transitions, 16173 flow, removed 305 selfloop flow, removed 5 redundant places. [2025-03-09 01:30:21,557 INFO L231 Difference]: Finished difference. Result has 328 places, 588 transitions, 13989 flow [2025-03-09 01:30:21,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=10941, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=13989, PETRI_PLACES=328, PETRI_TRANSITIONS=588} [2025-03-09 01:30:21,557 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 306 predicate places. [2025-03-09 01:30:21,557 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 588 transitions, 13989 flow [2025-03-09 01:30:21,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.368421052631579) internal successors, (159), 19 states have internal predecessors, (159), 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) [2025-03-09 01:30:21,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:21,557 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:21,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:21,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:21,758 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:21,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:21,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1481403595, now seen corresponding path program 21 times [2025-03-09 01:30:21,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:21,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980957649] [2025-03-09 01:30:21,759 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:30:21,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:21,761 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-03-09 01:30:21,763 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:30:21,763 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-09 01:30:21,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:30:21,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980957649] [2025-03-09 01:30:21,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980957649] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232233573] [2025-03-09 01:30:21,822 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:30:21,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:21,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:21,824 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:21,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-09 01:30:21,845 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-03-09 01:30:21,853 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:30:21,854 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-09 01:30:21,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:21,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 01:30:21,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:21,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:22,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232233573] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:22,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:22,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2025-03-09 01:30:22,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572935669] [2025-03-09 01:30:22,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:22,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 01:30:22,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:22,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 01:30:22,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2025-03-09 01:30:22,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:22,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 588 transitions, 13989 flow. Second operand has 23 states, 23 states have (on average 7.956521739130435) internal successors, (183), 23 states have internal predecessors, (183), 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) [2025-03-09 01:30:22,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:22,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:22,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:22,902 INFO L124 PetriNetUnfolderBase]: 1250/2361 cut-off events. [2025-03-09 01:30:22,902 INFO L125 PetriNetUnfolderBase]: For 56984/56984 co-relation queries the response was YES. [2025-03-09 01:30:22,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24736 conditions, 2361 events. 1250/2361 cut-off events. For 56984/56984 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 14892 event pairs, 18 based on Foata normal form. 20/2380 useless extension candidates. Maximal degree in co-relation 24487. Up to 626 conditions per place. [2025-03-09 01:30:22,923 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 349 selfloop transitions, 420 changer transitions 38/810 dead transitions. [2025-03-09 01:30:22,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 810 transitions, 20234 flow [2025-03-09 01:30:22,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-09 01:30:22,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-03-09 01:30:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 381 transitions. [2025-03-09 01:30:22,924 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5148648648648648 [2025-03-09 01:30:22,924 INFO L175 Difference]: Start difference. First operand has 328 places, 588 transitions, 13989 flow. Second operand 37 states and 381 transitions. [2025-03-09 01:30:22,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 810 transitions, 20234 flow [2025-03-09 01:30:23,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 810 transitions, 18428 flow, removed 774 selfloop flow, removed 12 redundant places. [2025-03-09 01:30:23,306 INFO L231 Difference]: Finished difference. Result has 362 places, 703 transitions, 17209 flow [2025-03-09 01:30:23,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12710, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=17209, PETRI_PLACES=362, PETRI_TRANSITIONS=703} [2025-03-09 01:30:23,307 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 340 predicate places. [2025-03-09 01:30:23,307 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 703 transitions, 17209 flow [2025-03-09 01:30:23,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.956521739130435) internal successors, (183), 23 states have internal predecessors, (183), 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) [2025-03-09 01:30:23,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:23,307 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:23,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:23,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:23,508 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:23,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:23,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1081900721, now seen corresponding path program 22 times [2025-03-09 01:30:23,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:23,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584734001] [2025-03-09 01:30:23,508 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:30:23,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:23,510 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:30:23,512 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:30:23,512 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:30:23,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:23,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584734001] [2025-03-09 01:30:23,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584734001] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461244733] [2025-03-09 01:30:23,585 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:30:23,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:23,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:23,587 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:23,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-09 01:30:23,609 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:30:23,619 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:30:23,619 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:30:23,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:23,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 01:30:23,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:23,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:23,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461244733] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:23,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:23,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 20 [2025-03-09 01:30:23,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560428311] [2025-03-09 01:30:23,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:23,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-09 01:30:23,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:23,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-09 01:30:23,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2025-03-09 01:30:23,848 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:23,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 703 transitions, 17209 flow. Second operand has 21 states, 21 states have (on average 8.142857142857142) internal successors, (171), 21 states have internal predecessors, (171), 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) [2025-03-09 01:30:23,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:23,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:23,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:24,891 INFO L124 PetriNetUnfolderBase]: 1380/2626 cut-off events. [2025-03-09 01:30:24,891 INFO L125 PetriNetUnfolderBase]: For 69440/69440 co-relation queries the response was YES. [2025-03-09 01:30:24,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27946 conditions, 2626 events. 1380/2626 cut-off events. For 69440/69440 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 16981 event pairs, 43 based on Foata normal form. 65/2690 useless extension candidates. Maximal degree in co-relation 27474. Up to 1139 conditions per place. [2025-03-09 01:30:24,913 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 457 selfloop transitions, 386 changer transitions 23/869 dead transitions. [2025-03-09 01:30:24,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 869 transitions, 22527 flow [2025-03-09 01:30:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-09 01:30:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-03-09 01:30:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 323 transitions. [2025-03-09 01:30:24,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5383333333333333 [2025-03-09 01:30:24,914 INFO L175 Difference]: Start difference. First operand has 362 places, 703 transitions, 17209 flow. Second operand 30 states and 323 transitions. [2025-03-09 01:30:24,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 869 transitions, 22527 flow [2025-03-09 01:30:25,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 869 transitions, 20297 flow, removed 960 selfloop flow, removed 18 redundant places. [2025-03-09 01:30:25,390 INFO L231 Difference]: Finished difference. Result has 378 places, 784 transitions, 18933 flow [2025-03-09 01:30:25,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15612, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18933, PETRI_PLACES=378, PETRI_TRANSITIONS=784} [2025-03-09 01:30:25,391 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 356 predicate places. [2025-03-09 01:30:25,391 INFO L471 AbstractCegarLoop]: Abstraction has has 378 places, 784 transitions, 18933 flow [2025-03-09 01:30:25,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.142857142857142) internal successors, (171), 21 states have internal predecessors, (171), 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) [2025-03-09 01:30:25,391 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:25,391 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:25,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-09 01:30:25,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-09 01:30:25,592 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:25,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash 501422287, now seen corresponding path program 23 times [2025-03-09 01:30:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:25,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642165605] [2025-03-09 01:30:25,592 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:30:25,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:25,595 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-03-09 01:30:25,598 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:30:25,598 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 01:30:25,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-09 01:30:25,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:25,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642165605] [2025-03-09 01:30:25,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642165605] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:25,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521983135] [2025-03-09 01:30:25,636 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:30:25,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:25,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:25,638 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:25,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-09 01:30:25,659 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-03-09 01:30:25,667 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:30:25,667 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 01:30:25,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:25,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:30:25,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-09 01:30:25,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:30:25,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521983135] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:30:25,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 01:30:25,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-03-09 01:30:25,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715467220] [2025-03-09 01:30:25,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:30:25,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:30:25,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:25,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:30:25,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-03-09 01:30:25,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:25,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 784 transitions, 18933 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2025-03-09 01:30:25,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:25,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:25,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:26,346 INFO L124 PetriNetUnfolderBase]: 1354/2523 cut-off events. [2025-03-09 01:30:26,346 INFO L125 PetriNetUnfolderBase]: For 41128/41131 co-relation queries the response was YES. [2025-03-09 01:30:26,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25830 conditions, 2523 events. 1354/2523 cut-off events. For 41128/41131 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 15874 event pairs, 62 based on Foata normal form. 10/2531 useless extension candidates. Maximal degree in co-relation 25662. Up to 1794 conditions per place. [2025-03-09 01:30:26,364 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 597 selfloop transitions, 30 changer transitions 164/794 dead transitions. [2025-03-09 01:30:26,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 794 transitions, 20685 flow [2025-03-09 01:30:26,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:30:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:30:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2025-03-09 01:30:26,365 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2025-03-09 01:30:26,365 INFO L175 Difference]: Start difference. First operand has 378 places, 784 transitions, 18933 flow. Second operand 6 states and 63 transitions. [2025-03-09 01:30:26,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 794 transitions, 20685 flow [2025-03-09 01:30:26,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 794 transitions, 19165 flow, removed 468 selfloop flow, removed 17 redundant places. [2025-03-09 01:30:26,735 INFO L231 Difference]: Finished difference. Result has 364 places, 625 transitions, 14110 flow [2025-03-09 01:30:26,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=17403, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14110, PETRI_PLACES=364, PETRI_TRANSITIONS=625} [2025-03-09 01:30:26,736 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 342 predicate places. [2025-03-09 01:30:26,736 INFO L471 AbstractCegarLoop]: Abstraction has has 364 places, 625 transitions, 14110 flow [2025-03-09 01:30:26,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2025-03-09 01:30:26,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:26,736 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:26,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-09 01:30:26,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-09 01:30:26,936 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:26,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1928411787, now seen corresponding path program 24 times [2025-03-09 01:30:26,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:26,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856408026] [2025-03-09 01:30:26,937 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:30:26,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:26,939 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-03-09 01:30:26,941 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 01:30:26,941 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-09 01:30:26,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:26,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:26,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856408026] [2025-03-09 01:30:26,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856408026] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:26,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841392807] [2025-03-09 01:30:26,992 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:30:26,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:26,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:26,994 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:26,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-09 01:30:27,017 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-03-09 01:30:27,026 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 01:30:27,027 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-09 01:30:27,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:27,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 01:30:27,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:27,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:27,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841392807] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:27,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:27,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-03-09 01:30:27,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516496683] [2025-03-09 01:30:27,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:27,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 01:30:27,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:27,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 01:30:27,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2025-03-09 01:30:27,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:27,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 625 transitions, 14110 flow. Second operand has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 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) [2025-03-09 01:30:27,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:27,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:27,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:27,744 INFO L124 PetriNetUnfolderBase]: 1301/2451 cut-off events. [2025-03-09 01:30:27,744 INFO L125 PetriNetUnfolderBase]: For 33888/33888 co-relation queries the response was YES. [2025-03-09 01:30:27,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23366 conditions, 2451 events. 1301/2451 cut-off events. For 33888/33888 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 15320 event pairs, 30 based on Foata normal form. 39/2489 useless extension candidates. Maximal degree in co-relation 23259. Up to 761 conditions per place. [2025-03-09 01:30:27,765 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 304 selfloop transitions, 418 changer transitions 59/784 dead transitions. [2025-03-09 01:30:27,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 784 transitions, 18673 flow [2025-03-09 01:30:27,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 01:30:27,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 01:30:27,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 163 transitions. [2025-03-09 01:30:27,766 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5433333333333333 [2025-03-09 01:30:27,766 INFO L175 Difference]: Start difference. First operand has 364 places, 625 transitions, 14110 flow. Second operand 15 states and 163 transitions. [2025-03-09 01:30:27,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 784 transitions, 18673 flow [2025-03-09 01:30:28,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 784 transitions, 16721 flow, removed 280 selfloop flow, removed 27 redundant places. [2025-03-09 01:30:28,049 INFO L231 Difference]: Finished difference. Result has 328 places, 686 transitions, 15743 flow [2025-03-09 01:30:28,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12450, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=15743, PETRI_PLACES=328, PETRI_TRANSITIONS=686} [2025-03-09 01:30:28,050 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 306 predicate places. [2025-03-09 01:30:28,050 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 686 transitions, 15743 flow [2025-03-09 01:30:28,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 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) [2025-03-09 01:30:28,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:28,050 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:28,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:28,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-09 01:30:28,251 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:28,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:28,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1745759679, now seen corresponding path program 25 times [2025-03-09 01:30:28,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:28,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27722666] [2025-03-09 01:30:28,251 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:30:28,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:28,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 01:30:28,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 01:30:28,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:28,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:28,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:28,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27722666] [2025-03-09 01:30:28,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27722666] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:28,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847796493] [2025-03-09 01:30:28,331 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:30:28,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:28,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:28,334 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:28,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-09 01:30:28,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 01:30:28,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 01:30:28,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:30:28,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:28,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 01:30:28,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:28,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:28,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847796493] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:28,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:28,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2025-03-09 01:30:28,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104888235] [2025-03-09 01:30:28,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:28,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 01:30:28,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:28,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 01:30:28,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2025-03-09 01:30:28,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:28,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 686 transitions, 15743 flow. Second operand has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 19 states have internal predecessors, (151), 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) [2025-03-09 01:30:28,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:28,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:28,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:29,035 INFO L124 PetriNetUnfolderBase]: 1227/2266 cut-off events. [2025-03-09 01:30:29,035 INFO L125 PetriNetUnfolderBase]: For 24335/24335 co-relation queries the response was YES. [2025-03-09 01:30:29,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22214 conditions, 2266 events. 1227/2266 cut-off events. For 24335/24335 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 13491 event pairs, 36 based on Foata normal form. 39/2304 useless extension candidates. Maximal degree in co-relation 22118. Up to 943 conditions per place. [2025-03-09 01:30:29,050 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 349 selfloop transitions, 360 changer transitions 38/750 dead transitions. [2025-03-09 01:30:29,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 750 transitions, 18195 flow [2025-03-09 01:30:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 01:30:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 01:30:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 181 transitions. [2025-03-09 01:30:29,051 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5027777777777778 [2025-03-09 01:30:29,051 INFO L175 Difference]: Start difference. First operand has 328 places, 686 transitions, 15743 flow. Second operand 18 states and 181 transitions. [2025-03-09 01:30:29,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 750 transitions, 18195 flow [2025-03-09 01:30:29,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 750 transitions, 17408 flow, removed 351 selfloop flow, removed 4 redundant places. [2025-03-09 01:30:29,258 INFO L231 Difference]: Finished difference. Result has 344 places, 675 transitions, 15880 flow [2025-03-09 01:30:29,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14926, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=15880, PETRI_PLACES=344, PETRI_TRANSITIONS=675} [2025-03-09 01:30:29,259 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 322 predicate places. [2025-03-09 01:30:29,259 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 675 transitions, 15880 flow [2025-03-09 01:30:29,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 19 states have internal predecessors, (151), 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) [2025-03-09 01:30:29,259 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:29,260 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:29,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-03-09 01:30:29,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:29,461 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:29,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:29,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1372225345, now seen corresponding path program 26 times [2025-03-09 01:30:29,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:29,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433152206] [2025-03-09 01:30:29,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:29,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:29,464 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-09 01:30:29,466 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 01:30:29,466 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:29,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:29,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:29,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433152206] [2025-03-09 01:30:29,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433152206] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:29,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711731668] [2025-03-09 01:30:29,502 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:30:29,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:29,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:29,504 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:29,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-09 01:30:29,528 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-09 01:30:29,536 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 01:30:29,536 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:30:29,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:29,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 01:30:29,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:29,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:30:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:30:29,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711731668] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:30:29,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:30:29,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2025-03-09 01:30:29,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921855530] [2025-03-09 01:30:29,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:30:29,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-09 01:30:29,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:29,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-09 01:30:29,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2025-03-09 01:30:29,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:29,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 675 transitions, 15880 flow. Second operand has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 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) [2025-03-09 01:30:29,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:29,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:29,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:30,235 INFO L124 PetriNetUnfolderBase]: 1219/2227 cut-off events. [2025-03-09 01:30:30,236 INFO L125 PetriNetUnfolderBase]: For 21248/21248 co-relation queries the response was YES. [2025-03-09 01:30:30,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21945 conditions, 2227 events. 1219/2227 cut-off events. For 21248/21248 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12887 event pairs, 43 based on Foata normal form. 3/2229 useless extension candidates. Maximal degree in co-relation 21846. Up to 1657 conditions per place. [2025-03-09 01:30:30,257 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 574 selfloop transitions, 156 changer transitions 4/737 dead transitions. [2025-03-09 01:30:30,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 737 transitions, 18087 flow [2025-03-09 01:30:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 01:30:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 01:30:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 171 transitions. [2025-03-09 01:30:30,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-03-09 01:30:30,258 INFO L175 Difference]: Start difference. First operand has 344 places, 675 transitions, 15880 flow. Second operand 18 states and 171 transitions. [2025-03-09 01:30:30,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 737 transitions, 18087 flow [2025-03-09 01:30:30,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 737 transitions, 17741 flow, removed 79 selfloop flow, removed 9 redundant places. [2025-03-09 01:30:30,521 INFO L231 Difference]: Finished difference. Result has 352 places, 709 transitions, 16482 flow [2025-03-09 01:30:30,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15556, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=16482, PETRI_PLACES=352, PETRI_TRANSITIONS=709} [2025-03-09 01:30:30,522 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 330 predicate places. [2025-03-09 01:30:30,522 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 709 transitions, 16482 flow [2025-03-09 01:30:30,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 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) [2025-03-09 01:30:30,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:30:30,523 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:30:30,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-09 01:30:30,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:30,723 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:30:30,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:30:30,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1427876328, now seen corresponding path program 27 times [2025-03-09 01:30:30,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:30:30,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136490149] [2025-03-09 01:30:30,724 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:30:30,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:30:30,726 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-03-09 01:30:30,728 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 20 statements. [2025-03-09 01:30:30,729 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:30:30,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:30,764 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-09 01:30:30,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:30:30,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136490149] [2025-03-09 01:30:30,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136490149] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:30:30,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820568495] [2025-03-09 01:30:30,764 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:30:30,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:30,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:30:30,766 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:30:30,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-09 01:30:30,791 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-03-09 01:30:30,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 20 statements. [2025-03-09 01:30:30,800 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:30:30,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:30:30,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:30:30,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:30:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-09 01:30:30,824 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:30:30,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820568495] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:30:30,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 01:30:30,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-03-09 01:30:30,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361195946] [2025-03-09 01:30:30,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:30:30,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:30:30,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:30:30,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:30:30,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-03-09 01:30:30,825 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-09 01:30:30,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 709 transitions, 16482 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2025-03-09 01:30:30,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:30:30,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-09 01:30:30,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:30:31,322 INFO L124 PetriNetUnfolderBase]: 1215/2172 cut-off events. [2025-03-09 01:30:31,322 INFO L125 PetriNetUnfolderBase]: For 20833/20833 co-relation queries the response was YES. [2025-03-09 01:30:31,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21682 conditions, 2172 events. 1215/2172 cut-off events. For 20833/20833 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12427 event pairs, 3 based on Foata normal form. 25/2196 useless extension candidates. Maximal degree in co-relation 21586. Up to 1449 conditions per place. [2025-03-09 01:30:31,339 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 0 selfloop transitions, 0 changer transitions 712/712 dead transitions. [2025-03-09 01:30:31,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 712 transitions, 17869 flow [2025-03-09 01:30:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:30:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:30:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2025-03-09 01:30:31,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2025-03-09 01:30:31,340 INFO L175 Difference]: Start difference. First operand has 352 places, 709 transitions, 16482 flow. Second operand 6 states and 63 transitions. [2025-03-09 01:30:31,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 712 transitions, 17869 flow [2025-03-09 01:30:31,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 712 transitions, 17810 flow, removed 15 selfloop flow, removed 5 redundant places. [2025-03-09 01:30:31,533 INFO L231 Difference]: Finished difference. Result has 347 places, 0 transitions, 0 flow [2025-03-09 01:30:31,533 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=16333, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=347, PETRI_TRANSITIONS=0} [2025-03-09 01:30:31,534 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 325 predicate places. [2025-03-09 01:30:31,534 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 0 transitions, 0 flow [2025-03-09 01:30:31,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2025-03-09 01:30:31,536 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-03-09 01:30:31,536 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-03-09 01:30:31,536 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-09 01:30:31,536 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-09 01:30:31,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-09 01:30:31,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:30:31,741 INFO L422 BasicCegarLoop]: Path program histogram: [27, 2, 2, 1] [2025-03-09 01:30:31,743 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 01:30:31,743 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 01:30:31,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 01:30:31 BasicIcfg [2025-03-09 01:30:31,746 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 01:30:31,747 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 01:30:31,747 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 01:30:31,747 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 01:30:31,747 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:30:04" (3/4) ... [2025-03-09 01:30:31,749 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 01:30:31,751 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-09 01:30:31,751 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-09 01:30:31,753 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2025-03-09 01:30:31,753 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2025-03-09 01:30:31,753 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-03-09 01:30:31,753 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-09 01:30:31,800 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 01:30:31,800 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 01:30:31,800 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 01:30:31,801 INFO L158 Benchmark]: Toolchain (without parser) took 27889.05ms. Allocated memory was 142.6MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 112.7MB in the beginning and 357.3MB in the end (delta: -244.5MB). Peak memory consumption was 618.6MB. Max. memory is 16.1GB. [2025-03-09 01:30:31,802 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 201.3MB. Free memory is still 122.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 01:30:31,802 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.08ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 101.5MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 01:30:31,802 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.18ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 01:30:31,802 INFO L158 Benchmark]: Boogie Preprocessor took 26.18ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 98.9MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 01:30:31,803 INFO L158 Benchmark]: IcfgBuilder took 312.66ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 78.6MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 01:30:31,803 INFO L158 Benchmark]: TraceAbstraction took 27310.06ms. Allocated memory was 142.6MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 78.2MB in the beginning and 361.6MB in the end (delta: -283.4MB). Peak memory consumption was 576.6MB. Max. memory is 16.1GB. [2025-03-09 01:30:31,803 INFO L158 Benchmark]: Witness Printer took 53.18ms. Allocated memory is still 1.0GB. Free memory was 361.6MB in the beginning and 357.3MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 01:30:31,804 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 201.3MB. Free memory is still 122.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.08ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 101.5MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.18ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.18ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 98.9MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 312.66ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 78.6MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 27310.06ms. Allocated memory was 142.6MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 78.2MB in the beginning and 361.6MB in the end (delta: -283.4MB). Peak memory consumption was 576.6MB. Max. memory is 16.1GB. * Witness Printer took 53.18ms. Allocated memory is still 1.0GB. Free memory was 361.6MB in the beginning and 357.3MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 27 locations, 30 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 27.2s, OverallIterations: 32, TraceHistogramMax: 4, PathProgramHistogramMax: 27, EmptinessCheckTime: 0.0s, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1833 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1833 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 584 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5678 IncrementalHoareTripleChecker+Invalid, 6262 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 584 mSolverCounterUnsat, 0 mSDtfsCounter, 5678 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1323 GetRequests, 733 SyntacticMatches, 23 SemanticMatches, 567 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3828 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18933occurred in iteration=27, InterpolantAutomatonStates: 450, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 1061 NumberOfCodeBlocks, 1057 NumberOfCodeBlocksAsserted, 118 NumberOfCheckSat, 1444 ConstructedInterpolants, 0 QuantifiedInterpolants, 7008 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2829 ConjunctsInSsa, 219 ConjunctsInUnsatCore, 88 InterpolantComputations, 7 PerfectInterpolantSequences, 305/611 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 01:30:31,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE