./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/parallel-bluetooth.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 cad856450cf6e95f9e7427e37ad4e3c8d32c703bbc90760a7f99cf9b3d00a8f5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:25:08,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:25:08,360 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:25:08,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:25:08,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:25:08,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:25:08,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:25:08,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:25:08,381 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:25:08,381 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:25:08,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:25:08,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:25:08,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:25:08,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:25:08,381 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:25:08,382 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:25:08,382 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:25:08,382 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:25:08,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:25:08,383 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:25:08,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:25:08,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:25:08,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:25:08,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:25:08,383 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:25:08,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:25:08,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:25:08,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:25:08,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:25:08,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:25:08,383 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 -> cad856450cf6e95f9e7427e37ad4e3c8d32c703bbc90760a7f99cf9b3d00a8f5 [2025-03-17 14:25:08,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:25:08,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:25:08,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:25:08,608 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:25:08,608 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:25:08,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2025-03-17 14:25:09,670 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d5456485/19921753fa5147babd239cf5aa35266e/FLAG64c3c833b [2025-03-17 14:25:09,877 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:25:09,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2025-03-17 14:25:09,884 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d5456485/19921753fa5147babd239cf5aa35266e/FLAG64c3c833b [2025-03-17 14:25:10,234 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d5456485/19921753fa5147babd239cf5aa35266e [2025-03-17 14:25:10,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:25:10,237 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:25:10,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:25:10,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:25:10,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:25:10,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41cc7110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10, skipping insertion in model container [2025-03-17 14:25:10,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,255 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:25:10,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:25:10,368 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:25:10,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:25:10,393 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:25:10,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10 WrapperNode [2025-03-17 14:25:10,394 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:25:10,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:25:10,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:25:10,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:25:10,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,423 INFO L138 Inliner]: procedures = 18, calls = 17, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 115 [2025-03-17 14:25:10,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:25:10,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:25:10,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:25:10,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:25:10,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,431 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,439 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 14:25:10,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,445 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:25:10,450 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:25:10,450 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:25:10,450 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:25:10,451 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (1/1) ... [2025-03-17 14:25:10,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:25:10,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:25:10,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 14:25:10,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 14:25:10,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:25:10,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 14:25:10,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 14:25:10,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 14:25:10,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 14:25:10,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 14:25:10,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:25:10,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:25:10,507 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 14:25:10,570 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:25:10,572 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:25:10,791 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:25:10,791 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:25:10,928 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:25:10,931 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:25:10,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:25:10 BoogieIcfgContainer [2025-03-17 14:25:10,931 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:25:10,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:25:10,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:25:10,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:25:10,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:25:10" (1/3) ... [2025-03-17 14:25:10,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c18eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:25:10, skipping insertion in model container [2025-03-17 14:25:10,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:10" (2/3) ... [2025-03-17 14:25:10,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c18eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:25:10, skipping insertion in model container [2025-03-17 14:25:10,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:25:10" (3/3) ... [2025-03-17 14:25:10,939 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2025-03-17 14:25:10,948 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:25:10,949 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-bluetooth.wvr.c that has 3 procedures, 47 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-17 14:25:10,950 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:25:10,992 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 14:25:11,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 49 transitions, 112 flow [2025-03-17 14:25:11,044 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2025-03-17 14:25:11,046 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 14:25:11,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 3/47 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2025-03-17 14:25:11,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 49 transitions, 112 flow [2025-03-17 14:25:11,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 46 transitions, 104 flow [2025-03-17 14:25:11,057 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:25:11,068 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;@2ceb62a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:25:11,069 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 14:25:11,085 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:25:11,086 INFO L124 PetriNetUnfolderBase]: 3/43 cut-off events. [2025-03-17 14:25:11,086 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 14:25:11,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:25:11,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:25:11,087 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)] === [2025-03-17 14:25:11,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:25:11,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1282880143, now seen corresponding path program 1 times [2025-03-17 14:25:11,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:25:11,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730280763] [2025-03-17 14:25:11,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:25:11,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:25:11,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-17 14:25:11,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 14:25:11,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:25:11,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:25:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:25:11,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:25:11,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730280763] [2025-03-17 14:25:11,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730280763] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:25:11,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:25:11,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:25:11,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240675072] [2025-03-17 14:25:11,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:25:11,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:25:11,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:25:11,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:25:11,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:25:11,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2025-03-17 14:25:11,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:25:11,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:25:11,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2025-03-17 14:25:11,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:25:11,582 INFO L124 PetriNetUnfolderBase]: 206/440 cut-off events. [2025-03-17 14:25:11,583 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-17 14:25:11,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 440 events. 206/440 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1911 event pairs, 74 based on Foata normal form. 13/424 useless extension candidates. Maximal degree in co-relation 743. Up to 223 conditions per place. [2025-03-17 14:25:11,589 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2025-03-17 14:25:11,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 228 flow [2025-03-17 14:25:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:25:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:25:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2025-03-17 14:25:11,600 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-03-17 14:25:11,601 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 104 flow. Second operand 3 states and 91 transitions. [2025-03-17 14:25:11,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 228 flow [2025-03-17 14:25:11,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 14:25:11,612 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 117 flow [2025-03-17 14:25:11,613 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2025-03-17 14:25:11,618 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2025-03-17 14:25:11,618 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 117 flow [2025-03-17 14:25:11,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:25:11,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:25:11,619 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:25:11,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:25:11,620 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)] === [2025-03-17 14:25:11,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:25:11,620 INFO L85 PathProgramCache]: Analyzing trace with hash -55221611, now seen corresponding path program 1 times [2025-03-17 14:25:11,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:25:11,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132567023] [2025-03-17 14:25:11,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:25:11,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:25:11,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-17 14:25:11,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 14:25:11,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:25:11,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:25:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:25:11,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:25:11,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132567023] [2025-03-17 14:25:11,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132567023] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:25:11,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:25:11,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:25:11,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685565539] [2025-03-17 14:25:11,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:25:11,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:25:11,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:25:11,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:25:11,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:25:11,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2025-03-17 14:25:11,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:25:11,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:25:11,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2025-03-17 14:25:11,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:25:11,849 INFO L124 PetriNetUnfolderBase]: 346/680 cut-off events. [2025-03-17 14:25:11,849 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-03-17 14:25:11,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 680 events. 346/680 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3102 event pairs, 104 based on Foata normal form. 0/628 useless extension candidates. Maximal degree in co-relation 691. Up to 448 conditions per place. [2025-03-17 14:25:11,856 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 51 selfloop transitions, 7 changer transitions 2/67 dead transitions. [2025-03-17 14:25:11,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 290 flow [2025-03-17 14:25:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:25:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:25:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2025-03-17 14:25:11,857 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2025-03-17 14:25:11,857 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 117 flow. Second operand 3 states and 90 transitions. [2025-03-17 14:25:11,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 290 flow [2025-03-17 14:25:11,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:25:11,859 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 153 flow [2025-03-17 14:25:11,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2025-03-17 14:25:11,860 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2025-03-17 14:25:11,860 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 153 flow [2025-03-17 14:25:11,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:25:11,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:25:11,860 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:25:11,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:25:11,861 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)] === [2025-03-17 14:25:11,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:25:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash 444767071, now seen corresponding path program 2 times [2025-03-17 14:25:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:25:11,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626118662] [2025-03-17 14:25:11,862 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:25:11,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:25:11,872 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 1 equivalence classes. [2025-03-17 14:25:11,894 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 14:25:11,895 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:25:11,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:25:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:25:12,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:25:12,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626118662] [2025-03-17 14:25:12,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626118662] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:25:12,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:25:12,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 14:25:12,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111223772] [2025-03-17 14:25:12,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:25:12,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:25:12,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:25:12,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:25:12,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:25:12,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2025-03-17 14:25:12,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:25:12,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:25:12,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2025-03-17 14:25:12,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:25:12,262 INFO L124 PetriNetUnfolderBase]: 431/941 cut-off events. [2025-03-17 14:25:12,262 INFO L125 PetriNetUnfolderBase]: For 493/493 co-relation queries the response was YES. [2025-03-17 14:25:12,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2215 conditions, 941 events. 431/941 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5160 event pairs, 42 based on Foata normal form. 47/980 useless extension candidates. Maximal degree in co-relation 1321. Up to 278 conditions per place. [2025-03-17 14:25:12,266 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 74 selfloop transitions, 18 changer transitions 11/110 dead transitions. [2025-03-17 14:25:12,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 110 transitions, 555 flow [2025-03-17 14:25:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 14:25:12,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 14:25:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2025-03-17 14:25:12,269 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5374149659863946 [2025-03-17 14:25:12,270 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 153 flow. Second operand 6 states and 158 transitions. [2025-03-17 14:25:12,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 110 transitions, 555 flow [2025-03-17 14:25:12,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 110 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:25:12,275 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 302 flow [2025-03-17 14:25:12,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2025-03-17 14:25:12,276 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2025-03-17 14:25:12,276 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 302 flow [2025-03-17 14:25:12,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:25:12,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:25:12,277 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:25:12,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 14:25:12,277 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)] === [2025-03-17 14:25:12,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:25:12,278 INFO L85 PathProgramCache]: Analyzing trace with hash -172367479, now seen corresponding path program 3 times [2025-03-17 14:25:12,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:25:12,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906536572] [2025-03-17 14:25:12,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:25:12,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:25:12,286 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 1 equivalence classes. [2025-03-17 14:25:12,295 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 14:25:12,297 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 14:25:12,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:25:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:25:12,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:25:12,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906536572] [2025-03-17 14:25:12,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906536572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:25:12,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:25:12,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:25:12,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333149285] [2025-03-17 14:25:12,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:25:12,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:25:12,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:25:12,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:25:12,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:25:12,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2025-03-17 14:25:12,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:25:12,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:25:12,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2025-03-17 14:25:12,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:25:12,659 INFO L124 PetriNetUnfolderBase]: 342/871 cut-off events. [2025-03-17 14:25:12,659 INFO L125 PetriNetUnfolderBase]: For 871/877 co-relation queries the response was YES. [2025-03-17 14:25:12,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2317 conditions, 871 events. 342/871 cut-off events. For 871/877 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5214 event pairs, 227 based on Foata normal form. 1/863 useless extension candidates. Maximal degree in co-relation 1723. Up to 495 conditions per place. [2025-03-17 14:25:12,665 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 47 selfloop transitions, 0 changer transitions 25/86 dead transitions. [2025-03-17 14:25:12,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 542 flow [2025-03-17 14:25:12,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:25:12,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:25:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2025-03-17 14:25:12,667 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2025-03-17 14:25:12,667 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 302 flow. Second operand 4 states and 108 transitions. [2025-03-17 14:25:12,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 542 flow [2025-03-17 14:25:12,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 542 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 14:25:12,672 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 296 flow [2025-03-17 14:25:12,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2025-03-17 14:25:12,673 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2025-03-17 14:25:12,673 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 296 flow [2025-03-17 14:25:12,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:25:12,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:25:12,673 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:25:12,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:25:12,674 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)] === [2025-03-17 14:25:12,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:25:12,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1179868207, now seen corresponding path program 1 times [2025-03-17 14:25:12,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:25:12,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596010402] [2025-03-17 14:25:12,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:25:12,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:25:12,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-17 14:25:12,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-17 14:25:12,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:25:12,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:25:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:25:12,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:25:12,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596010402] [2025-03-17 14:25:12,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596010402] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:25:12,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:25:12,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:25:12,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344626598] [2025-03-17 14:25:12,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:25:12,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:25:12,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:25:12,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:25:12,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:25:12,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2025-03-17 14:25:12,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:25:12,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:25:12,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2025-03-17 14:25:12,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:25:12,824 INFO L124 PetriNetUnfolderBase]: 334/743 cut-off events. [2025-03-17 14:25:12,825 INFO L125 PetriNetUnfolderBase]: For 1014/1014 co-relation queries the response was YES. [2025-03-17 14:25:12,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2108 conditions, 743 events. 334/743 cut-off events. For 1014/1014 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3749 event pairs, 172 based on Foata normal form. 17/752 useless extension candidates. Maximal degree in co-relation 2096. Up to 441 conditions per place. [2025-03-17 14:25:12,831 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 61 selfloop transitions, 9 changer transitions 3/79 dead transitions. [2025-03-17 14:25:12,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 519 flow [2025-03-17 14:25:12,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:25:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:25:12,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2025-03-17 14:25:12,833 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5986394557823129 [2025-03-17 14:25:12,833 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 296 flow. Second operand 3 states and 88 transitions. [2025-03-17 14:25:12,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 519 flow [2025-03-17 14:25:12,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 505 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-17 14:25:12,837 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 340 flow [2025-03-17 14:25:12,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2025-03-17 14:25:12,838 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2025-03-17 14:25:12,838 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 340 flow [2025-03-17 14:25:12,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:25:12,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:25:12,838 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:25:12,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 14:25:12,839 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)] === [2025-03-17 14:25:12,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:25:12,839 INFO L85 PathProgramCache]: Analyzing trace with hash 614378909, now seen corresponding path program 1 times [2025-03-17 14:25:12,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:25:12,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022070331] [2025-03-17 14:25:12,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:25:12,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:25:12,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-17 14:25:12,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-17 14:25:12,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:25:12,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:25:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:25:13,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:25:13,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022070331] [2025-03-17 14:25:13,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022070331] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:25:13,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:25:13,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:25:13,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043544628] [2025-03-17 14:25:13,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:25:13,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:25:13,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:25:13,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:25:13,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:25:13,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2025-03-17 14:25:13,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 340 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:25:13,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:25:13,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2025-03-17 14:25:13,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:25:13,194 INFO L124 PetriNetUnfolderBase]: 246/631 cut-off events. [2025-03-17 14:25:13,194 INFO L125 PetriNetUnfolderBase]: For 951/957 co-relation queries the response was YES. [2025-03-17 14:25:13,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1775 conditions, 631 events. 246/631 cut-off events. For 951/957 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3408 event pairs, 42 based on Foata normal form. 3/629 useless extension candidates. Maximal degree in co-relation 1763. Up to 296 conditions per place. [2025-03-17 14:25:13,196 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2025-03-17 14:25:13,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 585 flow [2025-03-17 14:25:13,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:25:13,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:25:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2025-03-17 14:25:13,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2025-03-17 14:25:13,198 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 340 flow. Second operand 7 states and 154 transitions. [2025-03-17 14:25:13,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 585 flow [2025-03-17 14:25:13,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 543 flow, removed 11 selfloop flow, removed 2 redundant places. [2025-03-17 14:25:13,201 INFO L231 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2025-03-17 14:25:13,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2025-03-17 14:25:13,202 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 15 predicate places. [2025-03-17 14:25:13,202 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2025-03-17 14:25:13,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:25:13,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-03-17 14:25:13,205 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-03-17 14:25:13,205 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-17 14:25:13,205 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-17 14:25:13,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 14:25:13,206 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-03-17 14:25:13,208 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 14:25:13,208 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 14:25:13,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 02:25:13 BasicIcfg [2025-03-17 14:25:13,212 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 14:25:13,213 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 14:25:13,213 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 14:25:13,213 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 14:25:13,214 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:25:10" (3/4) ... [2025-03-17 14:25:13,215 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 14:25:13,217 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-17 14:25:13,217 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-17 14:25:13,219 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-03-17 14:25:13,220 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-17 14:25:13,220 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-17 14:25:13,220 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-17 14:25:13,220 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-17 14:25:13,270 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 14:25:13,270 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 14:25:13,270 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 14:25:13,271 INFO L158 Benchmark]: Toolchain (without parser) took 3033.39ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 106.2MB in the beginning and 231.4MB in the end (delta: -125.2MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2025-03-17 14:25:13,271 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 127.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:25:13,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.14ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 94.5MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:25:13,271 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.04ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 93.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:25:13,271 INFO L158 Benchmark]: Boogie Preprocessor took 24.88ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 91.3MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:25:13,272 INFO L158 Benchmark]: IcfgBuilder took 481.23ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 61.0MB in the end (delta: 30.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 14:25:13,272 INFO L158 Benchmark]: TraceAbstraction took 2280.04ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 60.0MB in the beginning and 237.1MB in the end (delta: -177.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:25:13,272 INFO L158 Benchmark]: Witness Printer took 57.27ms. Allocated memory is still 310.4MB. Free memory was 237.1MB in the beginning and 231.4MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:25:13,274 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 127.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.14ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 94.5MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.04ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 93.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.88ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 91.3MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 481.23ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 61.0MB in the end (delta: 30.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2280.04ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 60.0MB in the beginning and 237.1MB in the end (delta: -177.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 57.27ms. Allocated memory is still 310.4MB. Free memory was 237.1MB in the beginning and 231.4MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: 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, 71 locations, 76 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 157 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 661 IncrementalHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 8 mSDtfsCounter, 661 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred in iteration=5, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 235 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 674 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 14:25:13,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE