./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 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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-?-798a7b3-m [2025-03-04 10:17:03,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 10:17:03,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 10:17:03,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 10:17:03,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 10:17:03,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 10:17:03,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 10:17:03,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 10:17:03,121 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 10:17:03,121 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 10:17:03,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 10:17:03,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 10:17:03,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 10:17:03,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 10:17:03,123 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 10:17:03,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 10:17:03,123 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 10:17:03,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 10:17:03,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 10:17:03,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 10:17:03,123 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 10:17:03,124 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 10:17:03,124 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 10:17:03,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 10:17:03,124 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 10:17:03,124 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 10:17:03,124 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 10:17:03,124 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 10:17:03,124 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 10:17:03,124 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 10:17:03,124 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 10:17:03,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 10:17:03,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 10:17:03,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:17:03,125 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 10:17:03,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 10:17:03,125 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 10:17:03,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 10:17:03,126 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 10:17:03,126 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 10:17:03,126 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 10:17:03,126 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 10:17:03,126 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 [2025-03-04 10:17:03,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 10:17:03,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 10:17:03,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 10:17:03,344 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 10:17:03,344 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 10:17:03,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-03-04 10:17:04,489 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265c1a53f/f2c006fd9d7e47e5ac45047b5ab495af/FLAG8df712557 [2025-03-04 10:17:04,710 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 10:17:04,715 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-03-04 10:17:04,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265c1a53f/f2c006fd9d7e47e5ac45047b5ab495af/FLAG8df712557 [2025-03-04 10:17:05,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265c1a53f/f2c006fd9d7e47e5ac45047b5ab495af [2025-03-04 10:17:05,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 10:17:05,062 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 10:17:05,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 10:17:05,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 10:17:05,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 10:17:05,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1af708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05, skipping insertion in model container [2025-03-04 10:17:05,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,081 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 10:17:05,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:17:05,190 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 10:17:05,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 10:17:05,210 INFO L204 MainTranslator]: Completed translation [2025-03-04 10:17:05,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05 WrapperNode [2025-03-04 10:17:05,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 10:17:05,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 10:17:05,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 10:17:05,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 10:17:05,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,235 INFO L138 Inliner]: procedures = 20, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2025-03-04 10:17:05,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 10:17:05,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 10:17:05,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 10:17:05,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 10:17:05,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,244 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,250 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 10:17:05,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,254 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,257 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,259 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 10:17:05,264 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 10:17:05,264 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 10:17:05,264 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 10:17:05,264 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (1/1) ... [2025-03-04 10:17:05,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 10:17:05,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:05,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 10:17:05,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 10:17:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 10:17:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 10:17:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 10:17:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 10:17:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 10:17:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 10:17:05,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 10:17:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 10:17:05,310 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 10:17:05,372 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 10:17:05,373 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 10:17:05,478 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 10:17:05,478 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 10:17:05,543 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 10:17:05,543 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 10:17:05,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:17:05 BoogieIcfgContainer [2025-03-04 10:17:05,543 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 10:17:05,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 10:17:05,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 10:17:05,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 10:17:05,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 10:17:05" (1/3) ... [2025-03-04 10:17:05,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1478f292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:17:05, skipping insertion in model container [2025-03-04 10:17:05,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 10:17:05" (2/3) ... [2025-03-04 10:17:05,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1478f292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 10:17:05, skipping insertion in model container [2025-03-04 10:17:05,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:17:05" (3/3) ... [2025-03-04 10:17:05,550 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2025-03-04 10:17:05,560 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 10:17:05,561 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. [2025-03-04 10:17:05,562 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 10:17:05,592 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 10:17:05,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2025-03-04 10:17:05,644 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2025-03-04 10:17:05,649 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 10:17:05,651 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. [2025-03-04 10:17:05,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2025-03-04 10:17:05,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2025-03-04 10:17:05,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 10:17:05,667 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;@4045b8a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 10:17:05,667 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-04 10:17:05,676 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 10:17:05,676 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-03-04 10:17:05,676 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 10:17:05,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:05,677 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:05,678 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)] === [2025-03-04 10:17:05,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:05,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2032214516, now seen corresponding path program 1 times [2025-03-04 10:17:05,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:05,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448618038] [2025-03-04 10:17:05,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:17:05,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:05,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 10:17:05,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 10:17:05,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:05,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:05,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:05,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448618038] [2025-03-04 10:17:05,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448618038] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:17:05,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:17:05,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 10:17:05,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411205949] [2025-03-04 10:17:05,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:17:05,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 10:17:05,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:05,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 10:17:05,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 10:17:05,919 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:05,921 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) [2025-03-04 10:17:05,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:05,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:05,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:05,972 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2025-03-04 10:17:05,972 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-03-04 10:17:05,973 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. [2025-03-04 10:17:05,974 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2025-03-04 10:17:05,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2025-03-04 10:17:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 10:17:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 10:17:05,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2025-03-04 10:17:05,984 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2025-03-04 10:17:05,985 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 41 transitions. [2025-03-04 10:17:05,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2025-03-04 10:17:05,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 10:17:05,991 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2025-03-04 10:17:05,993 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} [2025-03-04 10:17:05,995 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2025-03-04 10:17:05,997 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2025-03-04 10:17:05,997 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) [2025-03-04 10:17:05,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:05,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:05,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 10:17:05,998 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)] === [2025-03-04 10:17:05,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:05,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1426630968, now seen corresponding path program 1 times [2025-03-04 10:17:05,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:05,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930201863] [2025-03-04 10:17:05,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:17:05,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:06,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 10:17:06,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 10:17:06,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:06,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:06,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:06,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930201863] [2025-03-04 10:17:06,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930201863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:17:06,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:17:06,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:17:06,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938438468] [2025-03-04 10:17:06,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:17:06,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:17:06,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:06,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:17:06,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:17:06,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:06,095 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) [2025-03-04 10:17:06,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:06,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:06,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:06,199 INFO L124 PetriNetUnfolderBase]: 60/115 cut-off events. [2025-03-04 10:17:06,199 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-04 10:17:06,200 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. [2025-03-04 10:17:06,200 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 26 selfloop transitions, 7 changer transitions 2/38 dead transitions. [2025-03-04 10:17:06,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 38 transitions, 183 flow [2025-03-04 10:17:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 10:17:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 10:17:06,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2025-03-04 10:17:06,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63 [2025-03-04 10:17:06,204 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 63 transitions. [2025-03-04 10:17:06,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 38 transitions, 183 flow [2025-03-04 10:17:06,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 10:17:06,206 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2025-03-04 10:17:06,206 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} [2025-03-04 10:17:06,207 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2025-03-04 10:17:06,207 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2025-03-04 10:17:06,207 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) [2025-03-04 10:17:06,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:06,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:06,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 10:17:06,208 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)] === [2025-03-04 10:17:06,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:06,209 INFO L85 PathProgramCache]: Analyzing trace with hash -662948703, now seen corresponding path program 1 times [2025-03-04 10:17:06,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:06,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789768414] [2025-03-04 10:17:06,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:17:06,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:06,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 10:17:06,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 10:17:06,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:06,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:06,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:06,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:06,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789768414] [2025-03-04 10:17:06,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789768414] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:06,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182704815] [2025-03-04 10:17:06,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:17:06,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:06,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:06,297 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) [2025-03-04 10:17:06,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 10:17:06,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 10:17:06,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 10:17:06,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:06,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:06,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 10:17:06,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:06,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:06,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182704815] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:06,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-04 10:17:06,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2025-03-04 10:17:06,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741954224] [2025-03-04 10:17:06,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:17:06,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:17:06,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:06,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:17:06,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-04 10:17:06,477 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:06,477 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) [2025-03-04 10:17:06,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:06,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:06,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:06,540 INFO L124 PetriNetUnfolderBase]: 61/134 cut-off events. [2025-03-04 10:17:06,541 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2025-03-04 10:17:06,542 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. [2025-03-04 10:17:06,543 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 28 selfloop transitions, 8 changer transitions 2/41 dead transitions. [2025-03-04 10:17:06,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 256 flow [2025-03-04 10:17:06,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:17:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:17:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 54 transitions. [2025-03-04 10:17:06,545 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2025-03-04 10:17:06,545 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 4 states and 54 transitions. [2025-03-04 10:17:06,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 256 flow [2025-03-04 10:17:06,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 10:17:06,549 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 153 flow [2025-03-04 10:17:06,550 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} [2025-03-04 10:17:06,550 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 8 predicate places. [2025-03-04 10:17:06,550 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 153 flow [2025-03-04 10:17:06,550 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) [2025-03-04 10:17:06,551 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:06,551 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:06,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 10:17:06,751 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 [2025-03-04 10:17:06,751 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)] === [2025-03-04 10:17:06,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:06,752 INFO L85 PathProgramCache]: Analyzing trace with hash -718598781, now seen corresponding path program 2 times [2025-03-04 10:17:06,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:06,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718182565] [2025-03-04 10:17:06,752 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:06,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:06,758 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-04 10:17:06,769 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 10:17:06,771 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:06,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:06,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:06,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718182565] [2025-03-04 10:17:06,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718182565] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:17:06,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 10:17:06,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 10:17:06,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281016172] [2025-03-04 10:17:06,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:17:06,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:17:06,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:06,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:17:06,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 10:17:06,825 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:06,826 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) [2025-03-04 10:17:06,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:06,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:06,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:06,883 INFO L124 PetriNetUnfolderBase]: 51/111 cut-off events. [2025-03-04 10:17:06,884 INFO L125 PetriNetUnfolderBase]: For 238/241 co-relation queries the response was YES. [2025-03-04 10:17:06,885 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. [2025-03-04 10:17:06,887 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 28 selfloop transitions, 7 changer transitions 2/40 dead transitions. [2025-03-04 10:17:06,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 291 flow [2025-03-04 10:17:06,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 10:17:06,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 10:17:06,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2025-03-04 10:17:06,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-03-04 10:17:06,889 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 153 flow. Second operand 5 states and 60 transitions. [2025-03-04 10:17:06,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 291 flow [2025-03-04 10:17:06,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 287 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-04 10:17:06,891 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 172 flow [2025-03-04 10:17:06,891 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} [2025-03-04 10:17:06,891 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 13 predicate places. [2025-03-04 10:17:06,891 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 172 flow [2025-03-04 10:17:06,891 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) [2025-03-04 10:17:06,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:06,891 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:06,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 10:17:06,893 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)] === [2025-03-04 10:17:06,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:06,894 INFO L85 PathProgramCache]: Analyzing trace with hash 132866498, now seen corresponding path program 2 times [2025-03-04 10:17:06,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:06,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781716959] [2025-03-04 10:17:06,894 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:06,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:06,899 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-04 10:17:06,904 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 10:17:06,905 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:06,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:06,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:06,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781716959] [2025-03-04 10:17:06,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781716959] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:06,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361378871] [2025-03-04 10:17:06,940 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:06,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:06,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:06,942 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) [2025-03-04 10:17:06,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 10:17:06,967 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-03-04 10:17:06,976 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 10:17:06,977 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:06,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:06,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 10:17:06,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:07,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:07,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361378871] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:07,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-04 10:17:07,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2025-03-04 10:17:07,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892400130] [2025-03-04 10:17:07,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:17:07,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 10:17:07,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:07,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 10:17:07,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-04 10:17:07,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:07,089 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) [2025-03-04 10:17:07,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:07,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:07,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:07,127 INFO L124 PetriNetUnfolderBase]: 43/93 cut-off events. [2025-03-04 10:17:07,127 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2025-03-04 10:17:07,127 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. [2025-03-04 10:17:07,128 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 24 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2025-03-04 10:17:07,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 263 flow [2025-03-04 10:17:07,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 10:17:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 10:17:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2025-03-04 10:17:07,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-04 10:17:07,129 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 172 flow. Second operand 4 states and 50 transitions. [2025-03-04 10:17:07,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 263 flow [2025-03-04 10:17:07,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 241 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-04 10:17:07,131 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 169 flow [2025-03-04 10:17:07,131 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} [2025-03-04 10:17:07,131 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 15 predicate places. [2025-03-04 10:17:07,131 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 169 flow [2025-03-04 10:17:07,131 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) [2025-03-04 10:17:07,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:07,131 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:07,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:07,334 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 [2025-03-04 10:17:07,334 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)] === [2025-03-04 10:17:07,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:07,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1818064513, now seen corresponding path program 1 times [2025-03-04 10:17:07,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:07,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4981931] [2025-03-04 10:17:07,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:17:07,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:07,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 10:17:07,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 10:17:07,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:07,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:07,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:07,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4981931] [2025-03-04 10:17:07,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4981931] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:07,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516477289] [2025-03-04 10:17:07,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 10:17:07,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:07,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:07,456 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) [2025-03-04 10:17:07,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 10:17:07,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 10:17:07,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 10:17:07,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:07,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:07,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 10:17:07,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:07,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:07,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516477289] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:07,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:07,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-03-04 10:17:07,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947572534] [2025-03-04 10:17:07,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:07,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 10:17:07,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:07,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 10:17:07,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2025-03-04 10:17:07,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:07,711 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) [2025-03-04 10:17:07,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:07,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:07,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:07,858 INFO L124 PetriNetUnfolderBase]: 98/193 cut-off events. [2025-03-04 10:17:07,858 INFO L125 PetriNetUnfolderBase]: For 517/517 co-relation queries the response was YES. [2025-03-04 10:17:07,859 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. [2025-03-04 10:17:07,861 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 19 changer transitions 8/68 dead transitions. [2025-03-04 10:17:07,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 551 flow [2025-03-04 10:17:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 10:17:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 10:17:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2025-03-04 10:17:07,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2025-03-04 10:17:07,864 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 169 flow. Second operand 9 states and 111 transitions. [2025-03-04 10:17:07,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 551 flow [2025-03-04 10:17:07,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 504 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-04 10:17:07,867 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 346 flow [2025-03-04 10:17:07,867 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} [2025-03-04 10:17:07,868 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 26 predicate places. [2025-03-04 10:17:07,868 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 346 flow [2025-03-04 10:17:07,868 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) [2025-03-04 10:17:07,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:07,868 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:07,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:08,072 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 [2025-03-04 10:17:08,072 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)] === [2025-03-04 10:17:08,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash -620629203, now seen corresponding path program 2 times [2025-03-04 10:17:08,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:08,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68531460] [2025-03-04 10:17:08,073 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:08,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:08,076 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-04 10:17:08,083 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 10:17:08,083 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:08,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:08,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:08,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68531460] [2025-03-04 10:17:08,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68531460] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:08,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264891006] [2025-03-04 10:17:08,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:08,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:08,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:08,159 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) [2025-03-04 10:17:08,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 10:17:08,189 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-04 10:17:08,197 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 10:17:08,197 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:08,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:08,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 10:17:08,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:08,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:08,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264891006] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:08,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:08,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 10 [2025-03-04 10:17:08,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111039696] [2025-03-04 10:17:08,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:08,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 10:17:08,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:08,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 10:17:08,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-03-04 10:17:08,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:08,298 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) [2025-03-04 10:17:08,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:08,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:08,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:08,442 INFO L124 PetriNetUnfolderBase]: 143/289 cut-off events. [2025-03-04 10:17:08,442 INFO L125 PetriNetUnfolderBase]: For 1350/1350 co-relation queries the response was YES. [2025-03-04 10:17:08,443 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. [2025-03-04 10:17:08,444 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 44 selfloop transitions, 32 changer transitions 14/93 dead transitions. [2025-03-04 10:17:08,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 931 flow [2025-03-04 10:17:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 10:17:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-04 10:17:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2025-03-04 10:17:08,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2025-03-04 10:17:08,446 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 346 flow. Second operand 12 states and 139 transitions. [2025-03-04 10:17:08,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 931 flow [2025-03-04 10:17:08,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 93 transitions, 858 flow, removed 35 selfloop flow, removed 2 redundant places. [2025-03-04 10:17:08,450 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 598 flow [2025-03-04 10:17:08,450 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} [2025-03-04 10:17:08,451 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 43 predicate places. [2025-03-04 10:17:08,451 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 598 flow [2025-03-04 10:17:08,451 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) [2025-03-04 10:17:08,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:08,451 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:08,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 10:17:08,651 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 [2025-03-04 10:17:08,652 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)] === [2025-03-04 10:17:08,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1062750689, now seen corresponding path program 3 times [2025-03-04 10:17:08,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:08,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871970570] [2025-03-04 10:17:08,652 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:17:08,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:08,659 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-03-04 10:17:08,663 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 10:17:08,663 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 10:17:08,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:08,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:08,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871970570] [2025-03-04 10:17:08,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871970570] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:08,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753034121] [2025-03-04 10:17:08,707 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:17:08,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:08,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:08,709 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) [2025-03-04 10:17:08,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 10:17:08,734 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-03-04 10:17:08,743 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 10:17:08,744 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 10:17:08,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:08,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 10:17:08,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:08,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:08,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753034121] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:08,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:08,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-04 10:17:08,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980085980] [2025-03-04 10:17:08,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:08,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 10:17:08,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:08,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 10:17:08,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-04 10:17:08,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:08,838 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) [2025-03-04 10:17:08,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:08,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:08,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:08,952 INFO L124 PetriNetUnfolderBase]: 148/310 cut-off events. [2025-03-04 10:17:08,953 INFO L125 PetriNetUnfolderBase]: For 2977/2977 co-relation queries the response was YES. [2025-03-04 10:17:08,954 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. [2025-03-04 10:17:08,955 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 58 selfloop transitions, 28 changer transitions 6/95 dead transitions. [2025-03-04 10:17:08,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 1147 flow [2025-03-04 10:17:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 10:17:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 10:17:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2025-03-04 10:17:08,957 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2025-03-04 10:17:08,957 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 598 flow. Second operand 9 states and 107 transitions. [2025-03-04 10:17:08,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 1147 flow [2025-03-04 10:17:08,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 95 transitions, 1029 flow, removed 56 selfloop flow, removed 4 redundant places. [2025-03-04 10:17:08,964 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 795 flow [2025-03-04 10:17:08,964 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} [2025-03-04 10:17:08,965 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 49 predicate places. [2025-03-04 10:17:08,965 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 795 flow [2025-03-04 10:17:08,965 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) [2025-03-04 10:17:08,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:08,965 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:08,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:09,166 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 [2025-03-04 10:17:09,166 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)] === [2025-03-04 10:17:09,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:09,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1541913525, now seen corresponding path program 4 times [2025-03-04 10:17:09,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:09,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533202810] [2025-03-04 10:17:09,167 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:17:09,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:09,170 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-04 10:17:09,174 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 10:17:09,174 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:17:09,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:09,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:09,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533202810] [2025-03-04 10:17:09,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533202810] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:09,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867837535] [2025-03-04 10:17:09,204 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:17:09,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:09,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:09,206 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) [2025-03-04 10:17:09,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 10:17:09,231 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-04 10:17:09,240 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 10:17:09,240 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:17:09,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:09,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 10:17:09,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:09,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:09,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867837535] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:09,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:09,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2025-03-04 10:17:09,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097104299] [2025-03-04 10:17:09,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:09,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 10:17:09,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:09,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 10:17:09,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2025-03-04 10:17:09,326 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:09,326 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) [2025-03-04 10:17:09,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:09,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:09,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:09,472 INFO L124 PetriNetUnfolderBase]: 149/320 cut-off events. [2025-03-04 10:17:09,472 INFO L125 PetriNetUnfolderBase]: For 3640/3640 co-relation queries the response was YES. [2025-03-04 10:17:09,474 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. [2025-03-04 10:17:09,475 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 66 selfloop transitions, 37 changer transitions 0/106 dead transitions. [2025-03-04 10:17:09,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 1291 flow [2025-03-04 10:17:09,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 10:17:09,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-04 10:17:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2025-03-04 10:17:09,476 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2025-03-04 10:17:09,476 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 795 flow. Second operand 11 states and 128 transitions. [2025-03-04 10:17:09,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 1291 flow [2025-03-04 10:17:09,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 106 transitions, 1151 flow, removed 66 selfloop flow, removed 2 redundant places. [2025-03-04 10:17:09,497 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 924 flow [2025-03-04 10:17:09,497 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} [2025-03-04 10:17:09,498 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 61 predicate places. [2025-03-04 10:17:09,498 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 924 flow [2025-03-04 10:17:09,498 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) [2025-03-04 10:17:09,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:09,498 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:09,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:09,702 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 [2025-03-04 10:17:09,702 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)] === [2025-03-04 10:17:09,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1329214367, now seen corresponding path program 5 times [2025-03-04 10:17:09,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:09,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446865007] [2025-03-04 10:17:09,707 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:17:09,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:09,710 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-04 10:17:09,712 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 10:17:09,712 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:09,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:09,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:09,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:09,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446865007] [2025-03-04 10:17:09,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446865007] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:09,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578903895] [2025-03-04 10:17:09,741 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:17:09,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:09,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:09,743 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) [2025-03-04 10:17:09,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 10:17:09,770 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-04 10:17:09,778 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 10:17:09,778 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:09,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:09,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 10:17:09,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:09,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:09,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578903895] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:09,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:09,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-04 10:17:09,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628975092] [2025-03-04 10:17:09,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:09,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 10:17:09,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:09,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 10:17:09,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-03-04 10:17:09,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:09,862 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) [2025-03-04 10:17:09,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:09,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:09,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:10,030 INFO L124 PetriNetUnfolderBase]: 187/410 cut-off events. [2025-03-04 10:17:10,030 INFO L125 PetriNetUnfolderBase]: For 4216/4216 co-relation queries the response was YES. [2025-03-04 10:17:10,032 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. [2025-03-04 10:17:10,034 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 73 selfloop transitions, 45 changer transitions 0/121 dead transitions. [2025-03-04 10:17:10,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 121 transitions, 1647 flow [2025-03-04 10:17:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 10:17:10,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-04 10:17:10,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2025-03-04 10:17:10,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55 [2025-03-04 10:17:10,035 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 924 flow. Second operand 12 states and 132 transitions. [2025-03-04 10:17:10,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 121 transitions, 1647 flow [2025-03-04 10:17:10,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 121 transitions, 1512 flow, removed 56 selfloop flow, removed 4 redundant places. [2025-03-04 10:17:10,047 INFO L231 Difference]: Finished difference. Result has 96 places, 97 transitions, 1341 flow [2025-03-04 10:17:10,047 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} [2025-03-04 10:17:10,047 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 74 predicate places. [2025-03-04 10:17:10,047 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 97 transitions, 1341 flow [2025-03-04 10:17:10,047 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) [2025-03-04 10:17:10,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:10,047 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:10,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:10,248 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 [2025-03-04 10:17:10,248 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)] === [2025-03-04 10:17:10,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:10,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1682874866, now seen corresponding path program 6 times [2025-03-04 10:17:10,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:10,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835049983] [2025-03-04 10:17:10,249 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:17:10,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:10,252 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-03-04 10:17:10,255 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 10:17:10,258 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-04 10:17:10,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:10,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:10,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835049983] [2025-03-04 10:17:10,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835049983] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:10,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418669467] [2025-03-04 10:17:10,289 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:17:10,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:10,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:10,292 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) [2025-03-04 10:17:10,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 10:17:10,325 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-03-04 10:17:10,333 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 10:17:10,333 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-04 10:17:10,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:10,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 10:17:10,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:10,375 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:10,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418669467] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:10,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:10,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2025-03-04 10:17:10,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024114065] [2025-03-04 10:17:10,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:10,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 10:17:10,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:10,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 10:17:10,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2025-03-04 10:17:10,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:10,421 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) [2025-03-04 10:17:10,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:10,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:10,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:10,572 INFO L124 PetriNetUnfolderBase]: 205/447 cut-off events. [2025-03-04 10:17:10,573 INFO L125 PetriNetUnfolderBase]: For 5017/5017 co-relation queries the response was YES. [2025-03-04 10:17:10,574 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. [2025-03-04 10:17:10,576 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 90 selfloop transitions, 51 changer transitions 0/144 dead transitions. [2025-03-04 10:17:10,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 144 transitions, 2014 flow [2025-03-04 10:17:10,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 10:17:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-04 10:17:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2025-03-04 10:17:10,577 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2025-03-04 10:17:10,577 INFO L175 Difference]: Start difference. First operand has 96 places, 97 transitions, 1341 flow. Second operand 11 states and 128 transitions. [2025-03-04 10:17:10,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 144 transitions, 2014 flow [2025-03-04 10:17:10,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 144 transitions, 1918 flow, removed 32 selfloop flow, removed 3 redundant places. [2025-03-04 10:17:10,590 INFO L231 Difference]: Finished difference. Result has 107 places, 113 transitions, 1706 flow [2025-03-04 10:17:10,590 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} [2025-03-04 10:17:10,590 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 85 predicate places. [2025-03-04 10:17:10,590 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 113 transitions, 1706 flow [2025-03-04 10:17:10,590 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) [2025-03-04 10:17:10,590 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:10,590 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:10,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:10,795 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 [2025-03-04 10:17:10,795 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)] === [2025-03-04 10:17:10,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash -898325362, now seen corresponding path program 7 times [2025-03-04 10:17:10,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:10,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095525312] [2025-03-04 10:17:10,795 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 10:17:10,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:10,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 10:17:10,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 10:17:10,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:10,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:10,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:10,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095525312] [2025-03-04 10:17:10,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095525312] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:10,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833477208] [2025-03-04 10:17:10,881 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 10:17:10,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:10,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:10,882 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) [2025-03-04 10:17:10,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 10:17:10,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 10:17:10,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 10:17:10,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:10,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:10,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 10:17:10,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:11,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:11,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833477208] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:11,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:11,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-03-04 10:17:11,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212822665] [2025-03-04 10:17:11,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:11,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 10:17:11,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:11,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 10:17:11,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2025-03-04 10:17:11,150 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:11,150 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) [2025-03-04 10:17:11,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:11,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:11,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:11,426 INFO L124 PetriNetUnfolderBase]: 296/632 cut-off events. [2025-03-04 10:17:11,427 INFO L125 PetriNetUnfolderBase]: For 8655/8655 co-relation queries the response was YES. [2025-03-04 10:17:11,429 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. [2025-03-04 10:17:11,431 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 117 selfloop transitions, 71 changer transitions 12/203 dead transitions. [2025-03-04 10:17:11,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 203 transitions, 3194 flow [2025-03-04 10:17:11,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-04 10:17:11,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-04 10:17:11,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 214 transitions. [2025-03-04 10:17:11,434 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5631578947368421 [2025-03-04 10:17:11,434 INFO L175 Difference]: Start difference. First operand has 107 places, 113 transitions, 1706 flow. Second operand 19 states and 214 transitions. [2025-03-04 10:17:11,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 203 transitions, 3194 flow [2025-03-04 10:17:11,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 203 transitions, 3035 flow, removed 76 selfloop flow, removed 2 redundant places. [2025-03-04 10:17:11,455 INFO L231 Difference]: Finished difference. Result has 135 places, 151 transitions, 2540 flow [2025-03-04 10:17:11,456 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} [2025-03-04 10:17:11,457 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 113 predicate places. [2025-03-04 10:17:11,458 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 151 transitions, 2540 flow [2025-03-04 10:17:11,458 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) [2025-03-04 10:17:11,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:11,458 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:11,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:11,662 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 [2025-03-04 10:17:11,662 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)] === [2025-03-04 10:17:11,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:11,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1773699372, now seen corresponding path program 8 times [2025-03-04 10:17:11,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:11,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856865746] [2025-03-04 10:17:11,663 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:11,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:11,665 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-04 10:17:11,667 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 10:17:11,668 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:11,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:11,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:11,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856865746] [2025-03-04 10:17:11,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856865746] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:11,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117341750] [2025-03-04 10:17:11,747 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:11,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:11,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:11,749 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) [2025-03-04 10:17:11,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 10:17:11,774 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-04 10:17:11,782 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 10:17:11,782 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:11,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:11,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 10:17:11,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:11,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 10:17:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117341750] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:11,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:11,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 14 [2025-03-04 10:17:11,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535024580] [2025-03-04 10:17:11,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:11,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 10:17:11,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:11,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 10:17:11,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-03-04 10:17:11,885 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:11,886 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) [2025-03-04 10:17:11,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:11,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:11,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:12,209 INFO L124 PetriNetUnfolderBase]: 463/914 cut-off events. [2025-03-04 10:17:12,209 INFO L125 PetriNetUnfolderBase]: For 19228/19228 co-relation queries the response was YES. [2025-03-04 10:17:12,214 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. [2025-03-04 10:17:12,220 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 98 selfloop transitions, 162 changer transitions 17/280 dead transitions. [2025-03-04 10:17:12,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 280 transitions, 5121 flow [2025-03-04 10:17:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 10:17:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-04 10:17:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 194 transitions. [2025-03-04 10:17:12,221 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.60625 [2025-03-04 10:17:12,221 INFO L175 Difference]: Start difference. First operand has 135 places, 151 transitions, 2540 flow. Second operand 16 states and 194 transitions. [2025-03-04 10:17:12,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 280 transitions, 5121 flow [2025-03-04 10:17:12,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 280 transitions, 4674 flow, removed 179 selfloop flow, removed 6 redundant places. [2025-03-04 10:17:12,273 INFO L231 Difference]: Finished difference. Result has 151 places, 227 transitions, 4318 flow [2025-03-04 10:17:12,273 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} [2025-03-04 10:17:12,274 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 129 predicate places. [2025-03-04 10:17:12,274 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 227 transitions, 4318 flow [2025-03-04 10:17:12,274 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) [2025-03-04 10:17:12,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:12,274 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:12,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:12,474 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 [2025-03-04 10:17:12,475 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)] === [2025-03-04 10:17:12,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1904251862, now seen corresponding path program 9 times [2025-03-04 10:17:12,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:12,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859871032] [2025-03-04 10:17:12,475 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:17:12,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:12,478 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-03-04 10:17:12,483 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 10:17:12,484 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 10:17:12,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:12,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859871032] [2025-03-04 10:17:12,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859871032] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283477249] [2025-03-04 10:17:12,585 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:17:12,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:12,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:12,587 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) [2025-03-04 10:17:12,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 10:17:12,611 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-03-04 10:17:12,619 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 10:17:12,619 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 10:17:12,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:12,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 10:17:12,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:12,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 10:17:12,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283477249] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:12,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:12,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 4] total 15 [2025-03-04 10:17:12,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983444410] [2025-03-04 10:17:12,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:12,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 10:17:12,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:12,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 10:17:12,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-03-04 10:17:12,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:12,738 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) [2025-03-04 10:17:12,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:12,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:12,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:13,076 INFO L124 PetriNetUnfolderBase]: 536/1066 cut-off events. [2025-03-04 10:17:13,076 INFO L125 PetriNetUnfolderBase]: For 24313/24313 co-relation queries the response was YES. [2025-03-04 10:17:13,081 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. [2025-03-04 10:17:13,086 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 227 selfloop transitions, 74 changer transitions 9/313 dead transitions. [2025-03-04 10:17:13,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 313 transitions, 6393 flow [2025-03-04 10:17:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 10:17:13,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-04 10:17:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2025-03-04 10:17:13,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6045454545454545 [2025-03-04 10:17:13,087 INFO L175 Difference]: Start difference. First operand has 151 places, 227 transitions, 4318 flow. Second operand 11 states and 133 transitions. [2025-03-04 10:17:13,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 313 transitions, 6393 flow [2025-03-04 10:17:13,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 313 transitions, 5261 flow, removed 552 selfloop flow, removed 5 redundant places. [2025-03-04 10:17:13,167 INFO L231 Difference]: Finished difference. Result has 160 places, 270 transitions, 4494 flow [2025-03-04 10:17:13,167 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} [2025-03-04 10:17:13,167 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 138 predicate places. [2025-03-04 10:17:13,167 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 270 transitions, 4494 flow [2025-03-04 10:17:13,167 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) [2025-03-04 10:17:13,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:13,168 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:13,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:13,368 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 [2025-03-04 10:17:13,368 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)] === [2025-03-04 10:17:13,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:13,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1672632814, now seen corresponding path program 10 times [2025-03-04 10:17:13,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:13,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104035929] [2025-03-04 10:17:13,372 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:17:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:13,375 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-04 10:17:13,377 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:13,377 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:17:13,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:13,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:13,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104035929] [2025-03-04 10:17:13,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104035929] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:13,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034682516] [2025-03-04 10:17:13,414 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:17:13,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:13,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:13,416 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) [2025-03-04 10:17:13,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 10:17:13,436 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-04 10:17:13,443 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:13,443 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:17:13,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:13,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 10:17:13,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:13,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:13,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034682516] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:13,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:13,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-04 10:17:13,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829927988] [2025-03-04 10:17:13,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:13,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 10:17:13,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:13,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 10:17:13,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2025-03-04 10:17:13,553 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:13,554 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) [2025-03-04 10:17:13,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:13,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:13,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:13,842 INFO L124 PetriNetUnfolderBase]: 650/1314 cut-off events. [2025-03-04 10:17:13,842 INFO L125 PetriNetUnfolderBase]: For 18153/18153 co-relation queries the response was YES. [2025-03-04 10:17:13,847 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. [2025-03-04 10:17:13,852 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 181 selfloop transitions, 164 changer transitions 39/387 dead transitions. [2025-03-04 10:17:13,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 387 transitions, 7058 flow [2025-03-04 10:17:13,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 10:17:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-04 10:17:13,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2025-03-04 10:17:13,854 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5875 [2025-03-04 10:17:13,854 INFO L175 Difference]: Start difference. First operand has 160 places, 270 transitions, 4494 flow. Second operand 12 states and 141 transitions. [2025-03-04 10:17:13,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 387 transitions, 7058 flow [2025-03-04 10:17:13,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 387 transitions, 6883 flow, removed 81 selfloop flow, removed 2 redundant places. [2025-03-04 10:17:13,928 INFO L231 Difference]: Finished difference. Result has 177 places, 316 transitions, 5913 flow [2025-03-04 10:17:13,928 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} [2025-03-04 10:17:13,928 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 155 predicate places. [2025-03-04 10:17:13,929 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 316 transitions, 5913 flow [2025-03-04 10:17:13,929 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) [2025-03-04 10:17:13,929 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:13,929 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:13,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 10:17:14,129 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 [2025-03-04 10:17:14,129 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)] === [2025-03-04 10:17:14,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:14,130 INFO L85 PathProgramCache]: Analyzing trace with hash 709211746, now seen corresponding path program 11 times [2025-03-04 10:17:14,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:14,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182917890] [2025-03-04 10:17:14,130 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:17:14,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:14,132 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-03-04 10:17:14,134 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:14,134 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-04 10:17:14,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:14,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:14,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182917890] [2025-03-04 10:17:14,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182917890] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:14,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423461438] [2025-03-04 10:17:14,167 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:17:14,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:14,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:14,169 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) [2025-03-04 10:17:14,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 10:17:14,190 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-03-04 10:17:14,198 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:14,198 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-04 10:17:14,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:14,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 10:17:14,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:14,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:14,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423461438] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:14,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:14,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-03-04 10:17:14,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343721573] [2025-03-04 10:17:14,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:14,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 10:17:14,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:14,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 10:17:14,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2025-03-04 10:17:14,308 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:14,308 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) [2025-03-04 10:17:14,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:14,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:14,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:14,648 INFO L124 PetriNetUnfolderBase]: 630/1306 cut-off events. [2025-03-04 10:17:14,648 INFO L125 PetriNetUnfolderBase]: For 17533/17533 co-relation queries the response was YES. [2025-03-04 10:17:14,654 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. [2025-03-04 10:17:14,661 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 175 selfloop transitions, 219 changer transitions 1/398 dead transitions. [2025-03-04 10:17:14,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 398 transitions, 7833 flow [2025-03-04 10:17:14,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 10:17:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-04 10:17:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 170 transitions. [2025-03-04 10:17:14,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2025-03-04 10:17:14,663 INFO L175 Difference]: Start difference. First operand has 177 places, 316 transitions, 5913 flow. Second operand 16 states and 170 transitions. [2025-03-04 10:17:14,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 398 transitions, 7833 flow [2025-03-04 10:17:14,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 398 transitions, 7378 flow, removed 220 selfloop flow, removed 2 redundant places. [2025-03-04 10:17:14,754 INFO L231 Difference]: Finished difference. Result has 197 places, 358 transitions, 7181 flow [2025-03-04 10:17:14,754 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} [2025-03-04 10:17:14,755 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 175 predicate places. [2025-03-04 10:17:14,755 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 358 transitions, 7181 flow [2025-03-04 10:17:14,755 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) [2025-03-04 10:17:14,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:14,755 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:14,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 10:17:14,955 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 [2025-03-04 10:17:14,956 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)] === [2025-03-04 10:17:14,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:14,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1486361345, now seen corresponding path program 12 times [2025-03-04 10:17:14,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:14,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698094780] [2025-03-04 10:17:14,956 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:17:14,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:14,958 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-04 10:17:14,960 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:14,960 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-04 10:17:14,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:15,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:15,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698094780] [2025-03-04 10:17:15,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698094780] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:15,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427735177] [2025-03-04 10:17:15,008 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:17:15,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:15,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:15,010 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) [2025-03-04 10:17:15,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 10:17:15,034 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-04 10:17:15,042 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:15,042 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-04 10:17:15,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:15,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 10:17:15,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:15,089 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427735177] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:15,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:15,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-03-04 10:17:15,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253784533] [2025-03-04 10:17:15,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:15,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 10:17:15,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:15,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 10:17:15,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2025-03-04 10:17:15,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:15,137 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) [2025-03-04 10:17:15,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:15,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:15,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:15,444 INFO L124 PetriNetUnfolderBase]: 630/1290 cut-off events. [2025-03-04 10:17:15,444 INFO L125 PetriNetUnfolderBase]: For 19056/19056 co-relation queries the response was YES. [2025-03-04 10:17:15,451 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. [2025-03-04 10:17:15,456 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 217 selfloop transitions, 160 changer transitions 16/396 dead transitions. [2025-03-04 10:17:15,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 396 transitions, 8350 flow [2025-03-04 10:17:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 10:17:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-04 10:17:15,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 171 transitions. [2025-03-04 10:17:15,457 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.534375 [2025-03-04 10:17:15,458 INFO L175 Difference]: Start difference. First operand has 197 places, 358 transitions, 7181 flow. Second operand 16 states and 171 transitions. [2025-03-04 10:17:15,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 396 transitions, 8350 flow [2025-03-04 10:17:15,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 396 transitions, 8087 flow, removed 103 selfloop flow, removed 4 redundant places. [2025-03-04 10:17:15,589 INFO L231 Difference]: Finished difference. Result has 212 places, 352 transitions, 7253 flow [2025-03-04 10:17:15,589 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} [2025-03-04 10:17:15,589 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 190 predicate places. [2025-03-04 10:17:15,589 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 352 transitions, 7253 flow [2025-03-04 10:17:15,589 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) [2025-03-04 10:17:15,590 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:15,590 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:15,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:15,790 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 [2025-03-04 10:17:15,790 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)] === [2025-03-04 10:17:15,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:15,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1503118416, now seen corresponding path program 13 times [2025-03-04 10:17:15,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:15,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912285888] [2025-03-04 10:17:15,791 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 10:17:15,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:15,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 10:17:15,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:15,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:15,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 10:17:15,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:15,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912285888] [2025-03-04 10:17:15,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912285888] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:15,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211338615] [2025-03-04 10:17:15,832 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 10:17:15,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:15,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:15,834 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) [2025-03-04 10:17:15,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 10:17:15,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 10:17:15,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:15,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:15,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:15,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 10:17:15,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:15,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:15,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:15,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211338615] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:15,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:15,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-03-04 10:17:15,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066216602] [2025-03-04 10:17:15,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:15,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 10:17:15,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:15,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 10:17:15,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2025-03-04 10:17:15,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:15,986 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) [2025-03-04 10:17:15,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:15,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:15,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:16,260 INFO L124 PetriNetUnfolderBase]: 599/1185 cut-off events. [2025-03-04 10:17:16,260 INFO L125 PetriNetUnfolderBase]: For 16897/16897 co-relation queries the response was YES. [2025-03-04 10:17:16,267 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. [2025-03-04 10:17:16,298 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 204 selfloop transitions, 160 changer transitions 11/378 dead transitions. [2025-03-04 10:17:16,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 378 transitions, 8120 flow [2025-03-04 10:17:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 10:17:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-04 10:17:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 150 transitions. [2025-03-04 10:17:16,301 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2025-03-04 10:17:16,302 INFO L175 Difference]: Start difference. First operand has 212 places, 352 transitions, 7253 flow. Second operand 14 states and 150 transitions. [2025-03-04 10:17:16,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 378 transitions, 8120 flow [2025-03-04 10:17:16,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 378 transitions, 7560 flow, removed 135 selfloop flow, removed 14 redundant places. [2025-03-04 10:17:16,409 INFO L231 Difference]: Finished difference. Result has 211 places, 340 transitions, 6674 flow [2025-03-04 10:17:16,409 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} [2025-03-04 10:17:16,409 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 189 predicate places. [2025-03-04 10:17:16,410 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 340 transitions, 6674 flow [2025-03-04 10:17:16,410 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) [2025-03-04 10:17:16,410 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:16,410 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:16,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 10:17:16,610 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 [2025-03-04 10:17:16,610 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)] === [2025-03-04 10:17:16,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash 825645478, now seen corresponding path program 14 times [2025-03-04 10:17:16,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:16,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114207392] [2025-03-04 10:17:16,611 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:16,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:16,613 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-04 10:17:16,615 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:16,615 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:16,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:16,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:16,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:16,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114207392] [2025-03-04 10:17:16,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114207392] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:16,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857831290] [2025-03-04 10:17:16,652 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:16,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:16,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:16,654 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) [2025-03-04 10:17:16,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 10:17:16,678 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-04 10:17:16,686 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:16,686 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:16,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:16,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 10:17:16,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:16,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:16,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857831290] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:16,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:16,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-03-04 10:17:16,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873328265] [2025-03-04 10:17:16,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:16,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 10:17:16,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:16,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 10:17:16,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2025-03-04 10:17:16,803 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:16,803 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) [2025-03-04 10:17:16,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:16,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:16,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:17,142 INFO L124 PetriNetUnfolderBase]: 690/1370 cut-off events. [2025-03-04 10:17:17,142 INFO L125 PetriNetUnfolderBase]: For 14090/14090 co-relation queries the response was YES. [2025-03-04 10:17:17,149 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. [2025-03-04 10:17:17,155 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 254 selfloop transitions, 188 changer transitions 0/445 dead transitions. [2025-03-04 10:17:17,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 445 transitions, 9262 flow [2025-03-04 10:17:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-04 10:17:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-04 10:17:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 196 transitions. [2025-03-04 10:17:17,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2025-03-04 10:17:17,156 INFO L175 Difference]: Start difference. First operand has 211 places, 340 transitions, 6674 flow. Second operand 19 states and 196 transitions. [2025-03-04 10:17:17,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 445 transitions, 9262 flow [2025-03-04 10:17:17,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 445 transitions, 8949 flow, removed 79 selfloop flow, removed 8 redundant places. [2025-03-04 10:17:17,278 INFO L231 Difference]: Finished difference. Result has 229 places, 409 transitions, 8533 flow [2025-03-04 10:17:17,278 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} [2025-03-04 10:17:17,278 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 207 predicate places. [2025-03-04 10:17:17,278 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 409 transitions, 8533 flow [2025-03-04 10:17:17,278 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) [2025-03-04 10:17:17,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:17,278 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:17,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:17,479 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 [2025-03-04 10:17:17,479 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)] === [2025-03-04 10:17:17,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:17,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2093815369, now seen corresponding path program 15 times [2025-03-04 10:17:17,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:17,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973104105] [2025-03-04 10:17:17,479 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:17:17,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:17,482 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-03-04 10:17:17,483 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:17,484 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 10:17:17,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:17,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973104105] [2025-03-04 10:17:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973104105] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386571678] [2025-03-04 10:17:17,514 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:17:17,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:17,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:17,516 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) [2025-03-04 10:17:17,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 10:17:17,544 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-03-04 10:17:17,552 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:17,552 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 10:17:17,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:17,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 10:17:17,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:17,596 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:17,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:17,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386571678] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:17,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:17,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-03-04 10:17:17,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661072560] [2025-03-04 10:17:17,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:17,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 10:17:17,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:17,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 10:17:17,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2025-03-04 10:17:17,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:17,659 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) [2025-03-04 10:17:17,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:17,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:17,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:17,936 INFO L124 PetriNetUnfolderBase]: 724/1457 cut-off events. [2025-03-04 10:17:17,936 INFO L125 PetriNetUnfolderBase]: For 17206/17206 co-relation queries the response was YES. [2025-03-04 10:17:17,943 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. [2025-03-04 10:17:17,949 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 251 selfloop transitions, 213 changer transitions 4/471 dead transitions. [2025-03-04 10:17:17,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 471 transitions, 10440 flow [2025-03-04 10:17:17,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 10:17:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-04 10:17:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 148 transitions. [2025-03-04 10:17:17,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2025-03-04 10:17:17,952 INFO L175 Difference]: Start difference. First operand has 229 places, 409 transitions, 8533 flow. Second operand 14 states and 148 transitions. [2025-03-04 10:17:17,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 471 transitions, 10440 flow [2025-03-04 10:17:18,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 471 transitions, 10272 flow, removed 33 selfloop flow, removed 3 redundant places. [2025-03-04 10:17:18,112 INFO L231 Difference]: Finished difference. Result has 243 places, 437 transitions, 9817 flow [2025-03-04 10:17:18,113 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} [2025-03-04 10:17:18,113 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 221 predicate places. [2025-03-04 10:17:18,113 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 437 transitions, 9817 flow [2025-03-04 10:17:18,113 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) [2025-03-04 10:17:18,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:18,113 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:18,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-04 10:17:18,318 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 [2025-03-04 10:17:18,318 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)] === [2025-03-04 10:17:18,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:18,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1935235598, now seen corresponding path program 16 times [2025-03-04 10:17:18,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:18,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159997790] [2025-03-04 10:17:18,319 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:17:18,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:18,321 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-04 10:17:18,323 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:18,323 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:17:18,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:18,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:18,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159997790] [2025-03-04 10:17:18,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159997790] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:18,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887896424] [2025-03-04 10:17:18,364 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:17:18,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:18,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:18,366 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) [2025-03-04 10:17:18,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 10:17:18,388 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-04 10:17:18,395 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:18,396 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:17:18,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:18,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 10:17:18,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:18,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:18,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887896424] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:18,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:18,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-03-04 10:17:18,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504917000] [2025-03-04 10:17:18,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:18,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 10:17:18,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:18,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 10:17:18,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2025-03-04 10:17:18,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:18,479 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) [2025-03-04 10:17:18,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:18,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:18,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:18,787 INFO L124 PetriNetUnfolderBase]: 738/1437 cut-off events. [2025-03-04 10:17:18,787 INFO L125 PetriNetUnfolderBase]: For 19179/19179 co-relation queries the response was YES. [2025-03-04 10:17:18,794 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. [2025-03-04 10:17:18,799 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 249 selfloop transitions, 217 changer transitions 7/476 dead transitions. [2025-03-04 10:17:18,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 476 transitions, 11246 flow [2025-03-04 10:17:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 10:17:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-04 10:17:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 165 transitions. [2025-03-04 10:17:18,801 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.515625 [2025-03-04 10:17:18,801 INFO L175 Difference]: Start difference. First operand has 243 places, 437 transitions, 9817 flow. Second operand 16 states and 165 transitions. [2025-03-04 10:17:18,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 476 transitions, 11246 flow [2025-03-04 10:17:18,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 476 transitions, 11067 flow, removed 85 selfloop flow, removed 3 redundant places. [2025-03-04 10:17:18,979 INFO L231 Difference]: Finished difference. Result has 255 places, 440 transitions, 10179 flow [2025-03-04 10:17:18,979 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} [2025-03-04 10:17:18,979 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 233 predicate places. [2025-03-04 10:17:18,979 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 440 transitions, 10179 flow [2025-03-04 10:17:18,980 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) [2025-03-04 10:17:18,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:18,980 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:18,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:19,180 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 [2025-03-04 10:17:19,180 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)] === [2025-03-04 10:17:19,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:19,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1147304383, now seen corresponding path program 17 times [2025-03-04 10:17:19,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:19,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053636030] [2025-03-04 10:17:19,181 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:17:19,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:19,183 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-03-04 10:17:19,185 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:19,185 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-04 10:17:19,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:19,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:19,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053636030] [2025-03-04 10:17:19,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053636030] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:19,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362570420] [2025-03-04 10:17:19,239 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:17:19,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:19,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:19,241 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) [2025-03-04 10:17:19,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 10:17:19,266 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-03-04 10:17:19,275 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:19,275 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-04 10:17:19,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:19,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 10:17:19,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:19,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:19,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362570420] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:19,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:19,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-04 10:17:19,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884369191] [2025-03-04 10:17:19,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:19,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 10:17:19,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:19,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 10:17:19,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2025-03-04 10:17:19,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:19,368 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) [2025-03-04 10:17:19,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:19,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:19,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:19,686 INFO L124 PetriNetUnfolderBase]: 714/1390 cut-off events. [2025-03-04 10:17:19,686 INFO L125 PetriNetUnfolderBase]: For 18478/18478 co-relation queries the response was YES. [2025-03-04 10:17:19,694 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. [2025-03-04 10:17:19,698 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 251 selfloop transitions, 181 changer transitions 25/460 dead transitions. [2025-03-04 10:17:19,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 460 transitions, 11171 flow [2025-03-04 10:17:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 10:17:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-04 10:17:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2025-03-04 10:17:19,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-03-04 10:17:19,699 INFO L175 Difference]: Start difference. First operand has 255 places, 440 transitions, 10179 flow. Second operand 12 states and 128 transitions. [2025-03-04 10:17:19,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 460 transitions, 11171 flow [2025-03-04 10:17:19,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 460 transitions, 10786 flow, removed 51 selfloop flow, removed 10 redundant places. [2025-03-04 10:17:19,838 INFO L231 Difference]: Finished difference. Result has 258 places, 412 transitions, 9540 flow [2025-03-04 10:17:19,838 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} [2025-03-04 10:17:19,839 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 236 predicate places. [2025-03-04 10:17:19,839 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 412 transitions, 9540 flow [2025-03-04 10:17:19,839 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) [2025-03-04 10:17:19,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:19,839 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:19,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:20,039 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 [2025-03-04 10:17:20,040 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)] === [2025-03-04 10:17:20,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash -307547768, now seen corresponding path program 18 times [2025-03-04 10:17:20,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:20,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633409752] [2025-03-04 10:17:20,040 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:17:20,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:20,042 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-04 10:17:20,045 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:20,045 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-04 10:17:20,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:20,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:20,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633409752] [2025-03-04 10:17:20,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633409752] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:20,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033364631] [2025-03-04 10:17:20,076 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:17:20,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:20,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:20,078 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) [2025-03-04 10:17:20,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-04 10:17:20,102 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-04 10:17:20,110 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 10:17:20,110 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-04 10:17:20,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:20,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 10:17:20,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:20,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:20,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033364631] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:20,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:20,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-03-04 10:17:20,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981749156] [2025-03-04 10:17:20,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:20,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 10:17:20,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:20,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 10:17:20,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2025-03-04 10:17:20,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:20,212 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) [2025-03-04 10:17:20,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:20,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:20,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:20,506 INFO L124 PetriNetUnfolderBase]: 745/1401 cut-off events. [2025-03-04 10:17:20,506 INFO L125 PetriNetUnfolderBase]: For 17403/17403 co-relation queries the response was YES. [2025-03-04 10:17:20,514 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. [2025-03-04 10:17:20,518 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 280 selfloop transitions, 189 changer transitions 4/476 dead transitions. [2025-03-04 10:17:20,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 476 transitions, 11532 flow [2025-03-04 10:17:20,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 10:17:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 10:17:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 180 transitions. [2025-03-04 10:17:20,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-04 10:17:20,520 INFO L175 Difference]: Start difference. First operand has 258 places, 412 transitions, 9540 flow. Second operand 18 states and 180 transitions. [2025-03-04 10:17:20,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 476 transitions, 11532 flow [2025-03-04 10:17:20,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 476 transitions, 11231 flow, removed 18 selfloop flow, removed 8 redundant places. [2025-03-04 10:17:20,670 INFO L231 Difference]: Finished difference. Result has 267 places, 442 transitions, 10357 flow [2025-03-04 10:17:20,670 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} [2025-03-04 10:17:20,671 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 245 predicate places. [2025-03-04 10:17:20,671 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 442 transitions, 10357 flow [2025-03-04 10:17:20,671 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) [2025-03-04 10:17:20,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:20,671 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:20,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-04 10:17:20,871 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 [2025-03-04 10:17:20,871 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)] === [2025-03-04 10:17:20,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:20,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1462207585, now seen corresponding path program 19 times [2025-03-04 10:17:20,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:20,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543817546] [2025-03-04 10:17:20,872 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 10:17:20,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:20,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 10:17:20,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 10:17:20,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:20,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:20,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:20,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:20,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543817546] [2025-03-04 10:17:20,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543817546] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:20,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504363899] [2025-03-04 10:17:20,950 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 10:17:20,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:20,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:20,951 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) [2025-03-04 10:17:20,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-04 10:17:20,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 10:17:20,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 10:17:20,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:20,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:20,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 10:17:20,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:21,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504363899] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:21,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:21,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-03-04 10:17:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464990267] [2025-03-04 10:17:21,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:21,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-04 10:17:21,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:21,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-04 10:17:21,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2025-03-04 10:17:21,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:21,237 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) [2025-03-04 10:17:21,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:21,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:21,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:21,735 INFO L124 PetriNetUnfolderBase]: 842/1597 cut-off events. [2025-03-04 10:17:21,735 INFO L125 PetriNetUnfolderBase]: For 24769/24769 co-relation queries the response was YES. [2025-03-04 10:17:21,744 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. [2025-03-04 10:17:21,749 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 378 selfloop transitions, 170 changer transitions 8/559 dead transitions. [2025-03-04 10:17:21,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 559 transitions, 13150 flow [2025-03-04 10:17:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-04 10:17:21,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-04 10:17:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 281 transitions. [2025-03-04 10:17:21,750 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403846153846154 [2025-03-04 10:17:21,750 INFO L175 Difference]: Start difference. First operand has 267 places, 442 transitions, 10357 flow. Second operand 26 states and 281 transitions. [2025-03-04 10:17:21,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 559 transitions, 13150 flow [2025-03-04 10:17:21,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 559 transitions, 12685 flow, removed 70 selfloop flow, removed 11 redundant places. [2025-03-04 10:17:21,912 INFO L231 Difference]: Finished difference. Result has 294 places, 500 transitions, 11825 flow [2025-03-04 10:17:21,912 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} [2025-03-04 10:17:21,913 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 272 predicate places. [2025-03-04 10:17:21,913 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 500 transitions, 11825 flow [2025-03-04 10:17:21,913 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) [2025-03-04 10:17:21,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:21,913 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:21,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:22,113 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 [2025-03-04 10:17:22,113 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)] === [2025-03-04 10:17:22,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1077118769, now seen corresponding path program 20 times [2025-03-04 10:17:22,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:22,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171909928] [2025-03-04 10:17:22,114 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:22,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:22,116 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-04 10:17:22,118 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 10:17:22,118 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:22,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:22,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:22,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:22,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171909928] [2025-03-04 10:17:22,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171909928] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:22,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537249661] [2025-03-04 10:17:22,197 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:22,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:22,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:22,235 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) [2025-03-04 10:17:22,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-04 10:17:22,259 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-04 10:17:22,269 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 10:17:22,269 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:22,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:22,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 10:17:22,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:22,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:22,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537249661] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:22,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:22,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 18 [2025-03-04 10:17:22,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309515186] [2025-03-04 10:17:22,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:22,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 10:17:22,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:22,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 10:17:22,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2025-03-04 10:17:22,399 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:22,399 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) [2025-03-04 10:17:22,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:22,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:22,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:22,974 INFO L124 PetriNetUnfolderBase]: 1071/2036 cut-off events. [2025-03-04 10:17:22,975 INFO L125 PetriNetUnfolderBase]: For 42522/42522 co-relation queries the response was YES. [2025-03-04 10:17:22,988 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. [2025-03-04 10:17:22,995 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 376 selfloop transitions, 270 changer transitions 42/691 dead transitions. [2025-03-04 10:17:22,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 691 transitions, 16882 flow [2025-03-04 10:17:22,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-04 10:17:22,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-04 10:17:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 297 transitions. [2025-03-04 10:17:22,996 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5711538461538461 [2025-03-04 10:17:22,996 INFO L175 Difference]: Start difference. First operand has 294 places, 500 transitions, 11825 flow. Second operand 26 states and 297 transitions. [2025-03-04 10:17:22,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 691 transitions, 16882 flow [2025-03-04 10:17:23,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 691 transitions, 16173 flow, removed 305 selfloop flow, removed 5 redundant places. [2025-03-04 10:17:23,303 INFO L231 Difference]: Finished difference. Result has 328 places, 588 transitions, 13989 flow [2025-03-04 10:17:23,303 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} [2025-03-04 10:17:23,304 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 306 predicate places. [2025-03-04 10:17:23,304 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 588 transitions, 13989 flow [2025-03-04 10:17:23,304 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) [2025-03-04 10:17:23,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:23,304 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:23,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-04 10:17:23,504 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 [2025-03-04 10:17:23,505 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)] === [2025-03-04 10:17:23,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:23,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1481403595, now seen corresponding path program 21 times [2025-03-04 10:17:23,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:23,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941981447] [2025-03-04 10:17:23,505 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:17:23,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:23,508 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-03-04 10:17:23,510 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 10:17:23,511 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-04 10:17:23,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 10:17:23,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:23,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941981447] [2025-03-04 10:17:23,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941981447] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:23,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807473114] [2025-03-04 10:17:23,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:17:23,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:23,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:23,569 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) [2025-03-04 10:17:23,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-04 10:17:23,591 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-03-04 10:17:23,599 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 10:17:23,599 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-04 10:17:23,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:23,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 10:17:23,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:23,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:23,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807473114] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:23,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:23,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2025-03-04 10:17:23,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619336671] [2025-03-04 10:17:23,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:23,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 10:17:23,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:23,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 10:17:23,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2025-03-04 10:17:23,778 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:23,778 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) [2025-03-04 10:17:23,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:23,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:23,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:24,599 INFO L124 PetriNetUnfolderBase]: 1250/2361 cut-off events. [2025-03-04 10:17:24,599 INFO L125 PetriNetUnfolderBase]: For 56984/56984 co-relation queries the response was YES. [2025-03-04 10:17:24,616 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. [2025-03-04 10:17:24,625 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 349 selfloop transitions, 420 changer transitions 38/810 dead transitions. [2025-03-04 10:17:24,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 810 transitions, 20234 flow [2025-03-04 10:17:24,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-04 10:17:24,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-03-04 10:17:24,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 381 transitions. [2025-03-04 10:17:24,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5148648648648648 [2025-03-04 10:17:24,626 INFO L175 Difference]: Start difference. First operand has 328 places, 588 transitions, 13989 flow. Second operand 37 states and 381 transitions. [2025-03-04 10:17:24,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 810 transitions, 20234 flow [2025-03-04 10:17:24,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 810 transitions, 18428 flow, removed 774 selfloop flow, removed 12 redundant places. [2025-03-04 10:17:24,996 INFO L231 Difference]: Finished difference. Result has 362 places, 703 transitions, 17209 flow [2025-03-04 10:17:24,996 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} [2025-03-04 10:17:24,997 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 340 predicate places. [2025-03-04 10:17:24,997 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 703 transitions, 17209 flow [2025-03-04 10:17:24,997 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) [2025-03-04 10:17:24,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:24,997 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:25,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:25,197 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 [2025-03-04 10:17:25,197 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)] === [2025-03-04 10:17:25,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1081900721, now seen corresponding path program 22 times [2025-03-04 10:17:25,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:25,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546503143] [2025-03-04 10:17:25,198 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:17:25,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:25,200 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-04 10:17:25,202 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 10:17:25,202 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:17:25,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:25,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:25,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546503143] [2025-03-04 10:17:25,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546503143] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:25,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498552774] [2025-03-04 10:17:25,277 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 10:17:25,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:25,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:25,279 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) [2025-03-04 10:17:25,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-04 10:17:25,302 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-04 10:17:25,312 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 10:17:25,312 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 10:17:25,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:25,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 10:17:25,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:25,410 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:25,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498552774] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:25,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:25,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 20 [2025-03-04 10:17:25,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890670981] [2025-03-04 10:17:25,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:25,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 10:17:25,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:25,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 10:17:25,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2025-03-04 10:17:25,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:25,538 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) [2025-03-04 10:17:25,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:25,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:25,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:26,469 INFO L124 PetriNetUnfolderBase]: 1380/2626 cut-off events. [2025-03-04 10:17:26,469 INFO L125 PetriNetUnfolderBase]: For 69440/69440 co-relation queries the response was YES. [2025-03-04 10:17:26,487 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. [2025-03-04 10:17:26,496 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 457 selfloop transitions, 386 changer transitions 23/869 dead transitions. [2025-03-04 10:17:26,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 869 transitions, 22527 flow [2025-03-04 10:17:26,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-04 10:17:26,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-03-04 10:17:26,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 323 transitions. [2025-03-04 10:17:26,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5383333333333333 [2025-03-04 10:17:26,497 INFO L175 Difference]: Start difference. First operand has 362 places, 703 transitions, 17209 flow. Second operand 30 states and 323 transitions. [2025-03-04 10:17:26,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 869 transitions, 22527 flow [2025-03-04 10:17:26,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 869 transitions, 20297 flow, removed 960 selfloop flow, removed 18 redundant places. [2025-03-04 10:17:26,981 INFO L231 Difference]: Finished difference. Result has 378 places, 784 transitions, 18933 flow [2025-03-04 10:17:26,982 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} [2025-03-04 10:17:26,982 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 356 predicate places. [2025-03-04 10:17:26,982 INFO L471 AbstractCegarLoop]: Abstraction has has 378 places, 784 transitions, 18933 flow [2025-03-04 10:17:26,983 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) [2025-03-04 10:17:26,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:26,983 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:26,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-04 10:17:27,183 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 [2025-03-04 10:17:27,183 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)] === [2025-03-04 10:17:27,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:27,184 INFO L85 PathProgramCache]: Analyzing trace with hash 501422287, now seen corresponding path program 23 times [2025-03-04 10:17:27,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:27,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480034817] [2025-03-04 10:17:27,184 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:17:27,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:27,186 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-03-04 10:17:27,190 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 10:17:27,190 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-04 10:17:27,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 10:17:27,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480034817] [2025-03-04 10:17:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480034817] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300078103] [2025-03-04 10:17:27,229 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 10:17:27,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:27,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:27,231 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) [2025-03-04 10:17:27,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-04 10:17:27,253 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-03-04 10:17:27,261 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 10:17:27,261 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-04 10:17:27,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:27,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 10:17:27,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 10:17:27,316 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:17:27,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300078103] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:17:27,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 10:17:27,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-03-04 10:17:27,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224908825] [2025-03-04 10:17:27,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:17:27,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 10:17:27,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:27,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 10:17:27,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-03-04 10:17:27,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:27,316 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) [2025-03-04 10:17:27,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:27,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:27,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:27,902 INFO L124 PetriNetUnfolderBase]: 1354/2523 cut-off events. [2025-03-04 10:17:27,902 INFO L125 PetriNetUnfolderBase]: For 41128/41131 co-relation queries the response was YES. [2025-03-04 10:17:27,922 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. [2025-03-04 10:17:27,930 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 597 selfloop transitions, 30 changer transitions 164/794 dead transitions. [2025-03-04 10:17:27,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 794 transitions, 20685 flow [2025-03-04 10:17:27,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 10:17:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 10:17:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2025-03-04 10:17:27,931 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2025-03-04 10:17:27,931 INFO L175 Difference]: Start difference. First operand has 378 places, 784 transitions, 18933 flow. Second operand 6 states and 63 transitions. [2025-03-04 10:17:27,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 794 transitions, 20685 flow [2025-03-04 10:17:28,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 794 transitions, 19165 flow, removed 468 selfloop flow, removed 17 redundant places. [2025-03-04 10:17:28,418 INFO L231 Difference]: Finished difference. Result has 364 places, 625 transitions, 14110 flow [2025-03-04 10:17:28,419 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} [2025-03-04 10:17:28,419 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 342 predicate places. [2025-03-04 10:17:28,419 INFO L471 AbstractCegarLoop]: Abstraction has has 364 places, 625 transitions, 14110 flow [2025-03-04 10:17:28,419 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) [2025-03-04 10:17:28,419 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:28,419 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:28,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:28,619 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 [2025-03-04 10:17:28,620 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)] === [2025-03-04 10:17:28,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:28,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1928411787, now seen corresponding path program 24 times [2025-03-04 10:17:28,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:28,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389828423] [2025-03-04 10:17:28,620 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:17:28,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:28,622 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-03-04 10:17:28,624 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 10:17:28,624 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-04 10:17:28,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:28,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:28,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389828423] [2025-03-04 10:17:28,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389828423] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:28,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72527450] [2025-03-04 10:17:28,676 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 10:17:28,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:28,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:28,678 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) [2025-03-04 10:17:28,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-04 10:17:28,703 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-03-04 10:17:28,712 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 10:17:28,712 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-04 10:17:28,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:28,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 10:17:28,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:28,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:28,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72527450] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:28,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:28,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-03-04 10:17:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675896668] [2025-03-04 10:17:28,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:28,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 10:17:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:28,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 10:17:28,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2025-03-04 10:17:28,833 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:28,833 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) [2025-03-04 10:17:28,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:28,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:28,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:29,439 INFO L124 PetriNetUnfolderBase]: 1301/2451 cut-off events. [2025-03-04 10:17:29,439 INFO L125 PetriNetUnfolderBase]: For 33888/33888 co-relation queries the response was YES. [2025-03-04 10:17:29,457 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. [2025-03-04 10:17:29,468 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 304 selfloop transitions, 418 changer transitions 59/784 dead transitions. [2025-03-04 10:17:29,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 784 transitions, 18673 flow [2025-03-04 10:17:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 10:17:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-04 10:17:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 163 transitions. [2025-03-04 10:17:29,469 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5433333333333333 [2025-03-04 10:17:29,469 INFO L175 Difference]: Start difference. First operand has 364 places, 625 transitions, 14110 flow. Second operand 15 states and 163 transitions. [2025-03-04 10:17:29,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 784 transitions, 18673 flow [2025-03-04 10:17:29,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 784 transitions, 16721 flow, removed 280 selfloop flow, removed 27 redundant places. [2025-03-04 10:17:29,753 INFO L231 Difference]: Finished difference. Result has 328 places, 686 transitions, 15743 flow [2025-03-04 10:17:29,753 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} [2025-03-04 10:17:29,754 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 306 predicate places. [2025-03-04 10:17:29,754 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 686 transitions, 15743 flow [2025-03-04 10:17:29,754 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) [2025-03-04 10:17:29,754 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:29,754 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:29,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:29,954 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 [2025-03-04 10:17:29,954 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)] === [2025-03-04 10:17:29,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:29,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1745759679, now seen corresponding path program 25 times [2025-03-04 10:17:29,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:29,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848037695] [2025-03-04 10:17:29,955 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 10:17:29,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:29,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 10:17:29,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 10:17:29,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:29,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:30,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:30,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848037695] [2025-03-04 10:17:30,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848037695] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:30,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267277505] [2025-03-04 10:17:30,004 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-04 10:17:30,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:30,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:30,006 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) [2025-03-04 10:17:30,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-04 10:17:30,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 10:17:30,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 10:17:30,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 10:17:30,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:30,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 10:17:30,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:30,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:30,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267277505] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:30,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:30,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2025-03-04 10:17:30,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974512093] [2025-03-04 10:17:30,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:30,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 10:17:30,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:30,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 10:17:30,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2025-03-04 10:17:30,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:30,170 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) [2025-03-04 10:17:30,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:30,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:30,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:30,774 INFO L124 PetriNetUnfolderBase]: 1227/2266 cut-off events. [2025-03-04 10:17:30,774 INFO L125 PetriNetUnfolderBase]: For 24335/24335 co-relation queries the response was YES. [2025-03-04 10:17:30,788 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. [2025-03-04 10:17:30,796 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 349 selfloop transitions, 360 changer transitions 38/750 dead transitions. [2025-03-04 10:17:30,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 750 transitions, 18195 flow [2025-03-04 10:17:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 10:17:30,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 10:17:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 181 transitions. [2025-03-04 10:17:30,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5027777777777778 [2025-03-04 10:17:30,797 INFO L175 Difference]: Start difference. First operand has 328 places, 686 transitions, 15743 flow. Second operand 18 states and 181 transitions. [2025-03-04 10:17:30,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 750 transitions, 18195 flow [2025-03-04 10:17:31,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 750 transitions, 17408 flow, removed 351 selfloop flow, removed 4 redundant places. [2025-03-04 10:17:31,053 INFO L231 Difference]: Finished difference. Result has 344 places, 675 transitions, 15880 flow [2025-03-04 10:17:31,053 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} [2025-03-04 10:17:31,053 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 322 predicate places. [2025-03-04 10:17:31,053 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 675 transitions, 15880 flow [2025-03-04 10:17:31,054 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) [2025-03-04 10:17:31,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:31,054 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:31,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-04 10:17:31,254 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 [2025-03-04 10:17:31,254 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)] === [2025-03-04 10:17:31,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:31,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1372225345, now seen corresponding path program 26 times [2025-03-04 10:17:31,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:31,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231744140] [2025-03-04 10:17:31,255 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:31,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:31,257 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-04 10:17:31,259 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 10:17:31,259 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:31,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:31,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:31,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231744140] [2025-03-04 10:17:31,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231744140] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:31,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252678153] [2025-03-04 10:17:31,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 10:17:31,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:31,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:31,300 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) [2025-03-04 10:17:31,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-04 10:17:31,325 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-04 10:17:31,333 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 10:17:31,334 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 10:17:31,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:31,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 10:17:31,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:31,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 10:17:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 10:17:31,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252678153] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 10:17:31,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 10:17:31,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2025-03-04 10:17:31,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83915154] [2025-03-04 10:17:31,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 10:17:31,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 10:17:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:31,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 10:17:31,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2025-03-04 10:17:31,491 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:31,492 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) [2025-03-04 10:17:31,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:31,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:31,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:32,081 INFO L124 PetriNetUnfolderBase]: 1219/2227 cut-off events. [2025-03-04 10:17:32,082 INFO L125 PetriNetUnfolderBase]: For 21248/21248 co-relation queries the response was YES. [2025-03-04 10:17:32,100 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. [2025-03-04 10:17:32,110 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 574 selfloop transitions, 156 changer transitions 4/737 dead transitions. [2025-03-04 10:17:32,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 737 transitions, 18087 flow [2025-03-04 10:17:32,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 10:17:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 10:17:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 171 transitions. [2025-03-04 10:17:32,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-03-04 10:17:32,111 INFO L175 Difference]: Start difference. First operand has 344 places, 675 transitions, 15880 flow. Second operand 18 states and 171 transitions. [2025-03-04 10:17:32,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 737 transitions, 18087 flow [2025-03-04 10:17:32,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 737 transitions, 17741 flow, removed 79 selfloop flow, removed 9 redundant places. [2025-03-04 10:17:32,362 INFO L231 Difference]: Finished difference. Result has 352 places, 709 transitions, 16482 flow [2025-03-04 10:17:32,363 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} [2025-03-04 10:17:32,363 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 330 predicate places. [2025-03-04 10:17:32,363 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 709 transitions, 16482 flow [2025-03-04 10:17:32,363 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) [2025-03-04 10:17:32,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 10:17:32,363 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 10:17:32,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-04 10:17:32,563 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 [2025-03-04 10:17:32,564 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)] === [2025-03-04 10:17:32,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 10:17:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1427876328, now seen corresponding path program 27 times [2025-03-04 10:17:32,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 10:17:32,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565007562] [2025-03-04 10:17:32,564 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:17:32,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 10:17:32,567 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-03-04 10:17:32,569 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 20 statements. [2025-03-04 10:17:32,569 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 10:17:32,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-04 10:17:32,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 10:17:32,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565007562] [2025-03-04 10:17:32,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565007562] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 10:17:32,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77453860] [2025-03-04 10:17:32,601 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 10:17:32,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 10:17:32,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 10:17:32,602 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) [2025-03-04 10:17:32,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-04 10:17:32,626 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-03-04 10:17:32,634 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 20 statements. [2025-03-04 10:17:32,634 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 10:17:32,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 10:17:32,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 10:17:32,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 10:17:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-04 10:17:32,656 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 10:17:32,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77453860] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 10:17:32,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 10:17:32,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-03-04 10:17:32,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489718164] [2025-03-04 10:17:32,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 10:17:32,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 10:17:32,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 10:17:32,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 10:17:32,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-03-04 10:17:32,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2025-03-04 10:17:32,658 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) [2025-03-04 10:17:32,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 10:17:32,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2025-03-04 10:17:32,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 10:17:33,123 INFO L124 PetriNetUnfolderBase]: 1215/2172 cut-off events. [2025-03-04 10:17:33,123 INFO L125 PetriNetUnfolderBase]: For 20833/20833 co-relation queries the response was YES. [2025-03-04 10:17:33,135 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. [2025-03-04 10:17:33,138 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 0 selfloop transitions, 0 changer transitions 712/712 dead transitions. [2025-03-04 10:17:33,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 712 transitions, 17869 flow [2025-03-04 10:17:33,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 10:17:33,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 10:17:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2025-03-04 10:17:33,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2025-03-04 10:17:33,139 INFO L175 Difference]: Start difference. First operand has 352 places, 709 transitions, 16482 flow. Second operand 6 states and 63 transitions. [2025-03-04 10:17:33,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 712 transitions, 17869 flow [2025-03-04 10:17:33,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 712 transitions, 17810 flow, removed 15 selfloop flow, removed 5 redundant places. [2025-03-04 10:17:33,345 INFO L231 Difference]: Finished difference. Result has 347 places, 0 transitions, 0 flow [2025-03-04 10:17:33,345 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} [2025-03-04 10:17:33,346 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 325 predicate places. [2025-03-04 10:17:33,346 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 0 transitions, 0 flow [2025-03-04 10:17:33,346 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) [2025-03-04 10:17:33,348 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-03-04 10:17:33,348 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-03-04 10:17:33,348 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-04 10:17:33,348 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-04 10:17:33,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-03-04 10:17:33,552 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 [2025-03-04 10:17:33,552 INFO L422 BasicCegarLoop]: Path program histogram: [27, 2, 2, 1] [2025-03-04 10:17:33,554 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 10:17:33,555 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 10:17:33,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 10:17:33 BasicIcfg [2025-03-04 10:17:33,558 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 10:17:33,558 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 10:17:33,558 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 10:17:33,558 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 10:17:33,559 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 10:17:05" (3/4) ... [2025-03-04 10:17:33,561 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 10:17:33,563 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-04 10:17:33,563 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-04 10:17:33,567 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2025-03-04 10:17:33,567 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2025-03-04 10:17:33,567 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-03-04 10:17:33,567 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 10:17:33,622 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 10:17:33,622 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 10:17:33,622 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 10:17:33,623 INFO L158 Benchmark]: Toolchain (without parser) took 28561.17ms. Allocated memory was 142.6MB in the beginning and 813.7MB in the end (delta: 671.1MB). Free memory was 107.4MB in the beginning and 468.8MB in the end (delta: -361.4MB). Peak memory consumption was 308.1MB. Max. memory is 16.1GB. [2025-03-04 10:17:33,623 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 116.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:17:33,623 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.46ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 96.6MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 10:17:33,623 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.96ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 95.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:17:33,623 INFO L158 Benchmark]: Boogie Preprocessor took 26.85ms. Allocated memory is still 142.6MB. Free memory was 95.6MB in the beginning and 94.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:17:33,623 INFO L158 Benchmark]: IcfgBuilder took 280.01ms. Allocated memory is still 142.6MB. Free memory was 94.3MB in the beginning and 73.5MB in the end (delta: 20.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 10:17:33,623 INFO L158 Benchmark]: TraceAbstraction took 28012.72ms. Allocated memory was 142.6MB in the beginning and 813.7MB in the end (delta: 671.1MB). Free memory was 73.5MB in the beginning and 473.2MB in the end (delta: -399.6MB). Peak memory consumption was 643.6MB. Max. memory is 16.1GB. [2025-03-04 10:17:33,624 INFO L158 Benchmark]: Witness Printer took 64.15ms. Allocated memory is still 813.7MB. Free memory was 473.2MB in the beginning and 468.8MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 10:17:33,624 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 116.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.46ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 96.6MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.96ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 95.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.85ms. Allocated memory is still 142.6MB. Free memory was 95.6MB in the beginning and 94.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 280.01ms. Allocated memory is still 142.6MB. Free memory was 94.3MB in the beginning and 73.5MB in the end (delta: 20.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 28012.72ms. Allocated memory was 142.6MB in the beginning and 813.7MB in the end (delta: 671.1MB). Free memory was 73.5MB in the beginning and 473.2MB in the end (delta: -399.6MB). Peak memory consumption was 643.6MB. Max. memory is 16.1GB. * Witness Printer took 64.15ms. Allocated memory is still 813.7MB. Free memory was 473.2MB in the beginning and 468.8MB in the end (delta: 4.3MB). There was no memory consumed. 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, 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: 27.9s, OverallIterations: 32, TraceHistogramMax: 4, PathProgramHistogramMax: 27, EmptinessCheckTime: 0.0s, AutomataDifference: 15.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1833 SdHoareTripleChecker+Valid, 3.0s 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, 3.2s 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, 5.3s 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! [2025-03-04 10:17:33,634 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