./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-atomic/dekker.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-atomic/dekker.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 07d1abd007d632a3b4dac260b28d2ba8a005f15955283342b1ec38e7417e11f4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:47:17,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:47:17,292 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:47:17,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:47:17,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:47:17,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:47:17,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:47:17,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:47:17,319 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:47:17,321 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:47:17,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:47:17,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:47:17,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:47:17,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:47:17,324 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:47:17,324 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:47:17,325 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:47:17,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:47:17,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:47:17,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:47:17,325 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:47:17,329 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:47:17,329 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:47:17,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:47:17,330 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:47:17,330 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:47:17,330 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:47:17,330 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:47:17,331 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:47:17,331 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:47:17,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:47:17,332 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:47:17,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:47:17,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:47:17,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:47:17,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:47:17,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:47:17,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:47:17,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:47:17,334 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:47:17,334 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:47:17,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:47:17,335 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07d1abd007d632a3b4dac260b28d2ba8a005f15955283342b1ec38e7417e11f4 [2024-11-10 17:47:17,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:47:17,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:47:17,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:47:17,642 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:47:17,643 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:47:17,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/dekker.i [2024-11-10 17:47:19,005 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:47:19,307 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:47:19,307 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/dekker.i [2024-11-10 17:47:19,322 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c590c04a4/a14641642cf24770bdff63baaf092222/FLAG5ba1f9dcc [2024-11-10 17:47:19,333 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c590c04a4/a14641642cf24770bdff63baaf092222 [2024-11-10 17:47:19,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:47:19,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:47:19,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:47:19,338 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:47:19,344 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:47:19,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c366e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19, skipping insertion in model container [2024-11-10 17:47:19,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:47:19,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:47:19,773 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:47:19,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:47:19,874 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:47:19,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19 WrapperNode [2024-11-10 17:47:19,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:47:19,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:47:19,876 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:47:19,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:47:19,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,928 INFO L138 Inliner]: procedures = 167, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 86 [2024-11-10 17:47:19,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:47:19,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:47:19,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:47:19,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:47:19,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,941 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,956 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]. [2024-11-10 17:47:19,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,961 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,962 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:47:19,968 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:47:19,968 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:47:19,968 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:47:19,969 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (1/1) ... [2024-11-10 17:47:19,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:47:19,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:47:20,005 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) [2024-11-10 17:47:20,008 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 [2024-11-10 17:47:20,062 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-10 17:47:20,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-10 17:47:20,063 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 17:47:20,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 17:47:20,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:47:20,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:47:20,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:47:20,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:47:20,065 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 17:47:20,185 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:47:20,187 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:47:20,335 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:47:20,335 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:47:20,447 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:47:20,447 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:47:20,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:47:20 BoogieIcfgContainer [2024-11-10 17:47:20,447 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:47:20,449 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:47:20,449 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:47:20,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:47:20,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:47:19" (1/3) ... [2024-11-10 17:47:20,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43923b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:47:20, skipping insertion in model container [2024-11-10 17:47:20,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:47:19" (2/3) ... [2024-11-10 17:47:20,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43923b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:47:20, skipping insertion in model container [2024-11-10 17:47:20,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:47:20" (3/3) ... [2024-11-10 17:47:20,455 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker.i [2024-11-10 17:47:20,468 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:47:20,468 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-10 17:47:20,468 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:47:20,507 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 17:47:20,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 62 transitions, 138 flow [2024-11-10 17:47:20,575 INFO L124 PetriNetUnfolderBase]: 14/60 cut-off events. [2024-11-10 17:47:20,576 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 17:47:20,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 60 events. 14/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2024-11-10 17:47:20,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 62 transitions, 138 flow [2024-11-10 17:47:20,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 59 transitions, 130 flow [2024-11-10 17:47:20,608 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:47:20,614 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;@4f3f5381, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:47:20,615 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 17:47:20,645 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:47:20,648 INFO L124 PetriNetUnfolderBase]: 9/39 cut-off events. [2024-11-10 17:47:20,648 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:47:20,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:20,649 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:47:20,650 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:47:20,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:20,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1512414782, now seen corresponding path program 1 times [2024-11-10 17:47:20,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:20,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264705101] [2024-11-10 17:47:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:20,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:20,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:20,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264705101] [2024-11-10 17:47:20,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264705101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:20,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:20,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:47:20,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430851583] [2024-11-10 17:47:20,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:20,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 17:47:20,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:20,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 17:47:20,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 17:47:20,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 62 [2024-11-10 17:47:20,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 130 flow. Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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) [2024-11-10 17:47:20,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:20,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 62 [2024-11-10 17:47:20,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:20,997 INFO L124 PetriNetUnfolderBase]: 181/370 cut-off events. [2024-11-10 17:47:20,997 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-10 17:47:20,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 370 events. 181/370 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1952 event pairs, 138 based on Foata normal form. 117/415 useless extension candidates. Maximal degree in co-relation 638. Up to 292 conditions per place. [2024-11-10 17:47:21,003 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 22 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2024-11-10 17:47:21,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 154 flow [2024-11-10 17:47:21,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 17:47:21,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 17:47:21,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2024-11-10 17:47:21,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7419354838709677 [2024-11-10 17:47:21,019 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 130 flow. Second operand 2 states and 92 transitions. [2024-11-10 17:47:21,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 154 flow [2024-11-10 17:47:21,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 146 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 17:47:21,025 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 102 flow [2024-11-10 17:47:21,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2024-11-10 17:47:21,030 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-10 17:47:21,030 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 102 flow [2024-11-10 17:47:21,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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) [2024-11-10 17:47:21,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:21,031 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:47:21,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:47:21,031 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:47:21,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:21,032 INFO L85 PathProgramCache]: Analyzing trace with hash -390381137, now seen corresponding path program 1 times [2024-11-10 17:47:21,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:21,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501886576] [2024-11-10 17:47:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:21,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:21,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:21,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501886576] [2024-11-10 17:47:21,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501886576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:21,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:21,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:47:21,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605292986] [2024-11-10 17:47:21,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:21,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:47:21,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:21,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:47:21,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:47:21,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-10 17:47:21,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-11-10 17:47:21,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:21,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-10 17:47:21,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:21,288 INFO L124 PetriNetUnfolderBase]: 289/614 cut-off events. [2024-11-10 17:47:21,289 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 17:47:21,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 614 events. 289/614 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3430 event pairs, 92 based on Foata normal form. 20/555 useless extension candidates. Maximal degree in co-relation 1119. Up to 257 conditions per place. [2024-11-10 17:47:21,298 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 37 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-11-10 17:47:21,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 214 flow [2024-11-10 17:47:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:47:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:47:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-10 17:47:21,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2024-11-10 17:47:21,301 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 102 flow. Second operand 3 states and 126 transitions. [2024-11-10 17:47:21,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 214 flow [2024-11-10 17:47:21,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 214 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 17:47:21,306 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 122 flow [2024-11-10 17:47:21,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-11-10 17:47:21,307 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-10 17:47:21,308 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 122 flow [2024-11-10 17:47:21,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-11-10 17:47:21,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:21,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:47:21,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:47:21,309 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:47:21,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash 230521980, now seen corresponding path program 1 times [2024-11-10 17:47:21,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:21,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173349831] [2024-11-10 17:47:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:21,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:21,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:21,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173349831] [2024-11-10 17:47:21,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173349831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:21,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:21,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:47:21,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398009708] [2024-11-10 17:47:21,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:21,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:47:21,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:47:21,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:47:21,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2024-11-10 17:47:21,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-11-10 17:47:21,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:21,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2024-11-10 17:47:21,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:21,526 INFO L124 PetriNetUnfolderBase]: 271/583 cut-off events. [2024-11-10 17:47:21,526 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-11-10 17:47:21,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 583 events. 271/583 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3135 event pairs, 114 based on Foata normal form. 27/562 useless extension candidates. Maximal degree in co-relation 1160. Up to 301 conditions per place. [2024-11-10 17:47:21,532 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 37 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-10 17:47:21,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 228 flow [2024-11-10 17:47:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:47:21,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:47:21,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-11-10 17:47:21,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6720430107526881 [2024-11-10 17:47:21,536 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 122 flow. Second operand 3 states and 125 transitions. [2024-11-10 17:47:21,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 228 flow [2024-11-10 17:47:21,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:47:21,541 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 126 flow [2024-11-10 17:47:21,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-11-10 17:47:21,543 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-11-10 17:47:21,543 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 126 flow [2024-11-10 17:47:21,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-11-10 17:47:21,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:21,544 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:47:21,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:47:21,546 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:47:21,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:21,546 INFO L85 PathProgramCache]: Analyzing trace with hash 217041928, now seen corresponding path program 1 times [2024-11-10 17:47:21,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:21,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178537588] [2024-11-10 17:47:21,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:21,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:21,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:21,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178537588] [2024-11-10 17:47:21,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178537588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:21,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:21,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:47:21,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426586938] [2024-11-10 17:47:21,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:21,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:47:21,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:21,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:47:21,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:47:21,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 62 [2024-11-10 17:47:21,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-10 17:47:21,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:21,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 62 [2024-11-10 17:47:21,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:21,746 INFO L124 PetriNetUnfolderBase]: 234/579 cut-off events. [2024-11-10 17:47:21,747 INFO L125 PetriNetUnfolderBase]: For 56/63 co-relation queries the response was YES. [2024-11-10 17:47:21,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 579 events. 234/579 cut-off events. For 56/63 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3196 event pairs, 114 based on Foata normal form. 11/521 useless extension candidates. Maximal degree in co-relation 1076. Up to 223 conditions per place. [2024-11-10 17:47:21,752 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 29 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-11-10 17:47:21,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 215 flow [2024-11-10 17:47:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:47:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:47:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-10 17:47:21,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 17:47:21,755 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 126 flow. Second operand 3 states and 124 transitions. [2024-11-10 17:47:21,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 215 flow [2024-11-10 17:47:21,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:47:21,757 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 138 flow [2024-11-10 17:47:21,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-11-10 17:47:21,760 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-10 17:47:21,761 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 138 flow [2024-11-10 17:47:21,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-10 17:47:21,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:21,761 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:47:21,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:47:21,762 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:47:21,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:21,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1186352856, now seen corresponding path program 2 times [2024-11-10 17:47:21,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:21,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707920170] [2024-11-10 17:47:21,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:21,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:21,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:21,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707920170] [2024-11-10 17:47:21,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707920170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:21,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:21,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:47:21,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415971484] [2024-11-10 17:47:21,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:21,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:47:21,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:21,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:47:21,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:47:21,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 62 [2024-11-10 17:47:21,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-10 17:47:21,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:21,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 62 [2024-11-10 17:47:21,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:21,904 INFO L124 PetriNetUnfolderBase]: 170/401 cut-off events. [2024-11-10 17:47:21,905 INFO L125 PetriNetUnfolderBase]: For 136/139 co-relation queries the response was YES. [2024-11-10 17:47:21,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 401 events. 170/401 cut-off events. For 136/139 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1861 event pairs, 79 based on Foata normal form. 9/352 useless extension candidates. Maximal degree in co-relation 799. Up to 179 conditions per place. [2024-11-10 17:47:21,909 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 25 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-11-10 17:47:21,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 209 flow [2024-11-10 17:47:21,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:47:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:47:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-10 17:47:21,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-11-10 17:47:21,911 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 138 flow. Second operand 3 states and 120 transitions. [2024-11-10 17:47:21,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 209 flow [2024-11-10 17:47:21,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 187 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-10 17:47:21,915 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 122 flow [2024-11-10 17:47:21,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2024-11-10 17:47:21,916 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-10 17:47:21,917 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 122 flow [2024-11-10 17:47:21,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-10 17:47:21,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:47:21,918 INFO L204 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] [2024-11-10 17:47:21,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:47:21,918 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:47:21,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:47:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash 350031842, now seen corresponding path program 1 times [2024-11-10 17:47:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:47:21,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795757942] [2024-11-10 17:47:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:47:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:47:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:47:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:47:21,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:47:21,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795757942] [2024-11-10 17:47:21,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795757942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:47:21,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:47:21,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:47:21,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540254564] [2024-11-10 17:47:21,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:47:21,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:47:21,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:47:21,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:47:21,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:47:21,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 62 [2024-11-10 17:47:21,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-11-10 17:47:21,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:47:21,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 62 [2024-11-10 17:47:21,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:47:22,026 INFO L124 PetriNetUnfolderBase]: 152/328 cut-off events. [2024-11-10 17:47:22,027 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-11-10 17:47:22,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 328 events. 152/328 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1448 event pairs, 104 based on Foata normal form. 2/265 useless extension candidates. Maximal degree in co-relation 713. Up to 246 conditions per place. [2024-11-10 17:47:22,028 INFO L140 encePairwiseOnDemand]: 60/62 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-11-10 17:47:22,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 160 flow [2024-11-10 17:47:22,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:47:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:47:22,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-10 17:47:22,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5967741935483871 [2024-11-10 17:47:22,030 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 122 flow. Second operand 3 states and 111 transitions. [2024-11-10 17:47:22,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 160 flow [2024-11-10 17:47:22,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 149 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 17:47:22,031 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-11-10 17:47:22,032 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-11-10 17:47:22,034 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2024-11-10 17:47:22,034 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-11-10 17:47:22,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-11-10 17:47:22,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-10 17:47:22,038 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-10 17:47:22,038 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-10 17:47:22,038 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-10 17:47:22,038 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-11-10 17:47:22,038 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-10 17:47:22,041 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-10 17:47:22,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 17:47:22,042 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-10 17:47:22,047 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 17:47:22,048 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 17:47:22,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:47:22 BasicIcfg [2024-11-10 17:47:22,053 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 17:47:22,054 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 17:47:22,054 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 17:47:22,055 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 17:47:22,055 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:47:20" (3/4) ... [2024-11-10 17:47:22,057 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 17:47:22,060 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thr2 [2024-11-10 17:47:22,060 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thr1 [2024-11-10 17:47:22,065 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2024-11-10 17:47:22,065 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-10 17:47:22,065 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-10 17:47:22,066 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-10 17:47:22,145 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 17:47:22,146 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 17:47:22,146 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 17:47:22,146 INFO L158 Benchmark]: Toolchain (without parser) took 2809.50ms. Allocated memory was 146.8MB in the beginning and 184.5MB in the end (delta: 37.7MB). Free memory was 114.0MB in the beginning and 68.7MB in the end (delta: 45.3MB). Peak memory consumption was 84.5MB. Max. memory is 16.1GB. [2024-11-10 17:47:22,147 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 146.8MB. Free memory was 122.8MB in the beginning and 122.7MB in the end (delta: 154.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 17:47:22,147 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.89ms. Allocated memory is still 146.8MB. Free memory was 113.5MB in the beginning and 90.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-10 17:47:22,147 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.40ms. Allocated memory is still 146.8MB. Free memory was 90.4MB in the beginning and 88.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 17:47:22,148 INFO L158 Benchmark]: Boogie Preprocessor took 36.81ms. Allocated memory is still 146.8MB. Free memory was 88.4MB in the beginning and 86.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 17:47:22,148 INFO L158 Benchmark]: IcfgBuilder took 479.53ms. Allocated memory is still 146.8MB. Free memory was 86.7MB in the beginning and 66.5MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-10 17:47:22,148 INFO L158 Benchmark]: TraceAbstraction took 1604.16ms. Allocated memory was 146.8MB in the beginning and 184.5MB in the end (delta: 37.7MB). Free memory was 65.7MB in the beginning and 72.9MB in the end (delta: -7.1MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2024-11-10 17:47:22,149 INFO L158 Benchmark]: Witness Printer took 91.58ms. Allocated memory is still 184.5MB. Free memory was 72.9MB in the beginning and 68.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 17:47:22,150 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 146.8MB. Free memory was 122.8MB in the beginning and 122.7MB in the end (delta: 154.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 536.89ms. Allocated memory is still 146.8MB. Free memory was 113.5MB in the beginning and 90.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.40ms. Allocated memory is still 146.8MB. Free memory was 90.4MB in the beginning and 88.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.81ms. Allocated memory is still 146.8MB. Free memory was 88.4MB in the beginning and 86.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 479.53ms. Allocated memory is still 146.8MB. Free memory was 86.7MB in the beginning and 66.5MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1604.16ms. Allocated memory was 146.8MB in the beginning and 184.5MB in the end (delta: 37.7MB). Free memory was 65.7MB in the beginning and 72.9MB in the end (delta: -7.1MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. * Witness Printer took 91.58ms. Allocated memory is still 184.5MB. Free memory was 72.9MB in the beginning and 68.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 779]: 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, 89 locations, 7 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: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 247 IncrementalHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 10 mSDtfsCounter, 247 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=4, InterpolantAutomatonStates: 17, 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, 0.4s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 172 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 17:47:22,179 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