./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.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 9c046e6043edd4a9981865f273deb13bc96b2518d014dd6435bf0abb656de540 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:43:08,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:43:08,980 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:43:08,997 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:43:08,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:43:09,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:43:09,020 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:43:09,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:43:09,021 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:43:09,021 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:43:09,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:43:09,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:43:09,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:43:09,023 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:43:09,023 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:43:09,024 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:43:09,024 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:43:09,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:43:09,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:43:09,025 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:43:09,026 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:43:09,026 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:43:09,027 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:43:09,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:43:09,027 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:43:09,028 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:43:09,028 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:43:09,028 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:43:09,029 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:43:09,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:43:09,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:43:09,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:43:09,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:43:09,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:43:09,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:43:09,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:43:09,032 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:43:09,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:43:09,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:43:09,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:43:09,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:43:09,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:43:09,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c046e6043edd4a9981865f273deb13bc96b2518d014dd6435bf0abb656de540 [2024-11-20 17:43:09,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:43:09,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:43:09,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:43:09,324 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:43:09,325 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:43:09,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2024-11-20 17:43:10,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:43:10,944 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:43:10,945 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2024-11-20 17:43:10,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/858bc1283/c91c97cf7cc84d5596f060499b77b44a/FLAG561a830f5 [2024-11-20 17:43:10,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/858bc1283/c91c97cf7cc84d5596f060499b77b44a [2024-11-20 17:43:10,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:43:10,969 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:43:10,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:43:10,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:43:10,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:43:10,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:43:10" (1/1) ... [2024-11-20 17:43:10,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc1c7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:10, skipping insertion in model container [2024-11-20 17:43:10,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:43:10" (1/1) ... [2024-11-20 17:43:11,003 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:43:11,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:43:11,220 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:43:11,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:43:11,265 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:43:11,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11 WrapperNode [2024-11-20 17:43:11,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:43:11,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:43:11,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:43:11,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:43:11,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (1/1) ... [2024-11-20 17:43:11,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (1/1) ... [2024-11-20 17:43:11,307 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 110 [2024-11-20 17:43:11,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:43:11,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:43:11,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:43:11,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:43:11,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (1/1) ... [2024-11-20 17:43:11,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (1/1) ... [2024-11-20 17:43:11,323 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (1/1) ... [2024-11-20 17:43:11,333 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]. [2024-11-20 17:43:11,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (1/1) ... [2024-11-20 17:43:11,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (1/1) ... [2024-11-20 17:43:11,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (1/1) ... [2024-11-20 17:43:11,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (1/1) ... [2024-11-20 17:43:11,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (1/1) ... [2024-11-20 17:43:11,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (1/1) ... [2024-11-20 17:43:11,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:43:11,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:43:11,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:43:11,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:43:11,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (1/1) ... [2024-11-20 17:43:11,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:43:11,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:43:11,407 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) [2024-11-20 17:43:11,410 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 [2024-11-20 17:43:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:43:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 17:43:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 17:43:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 17:43:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 17:43:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:43:11,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:43:11,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:43:11,464 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:43:11,562 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:43:11,563 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:43:11,749 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:43:11,750 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:43:11,893 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:43:11,893 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 17:43:11,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:43:11 BoogieIcfgContainer [2024-11-20 17:43:11,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:43:11,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:43:11,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:43:11,903 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:43:11,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:43:10" (1/3) ... [2024-11-20 17:43:11,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a6871b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:43:11, skipping insertion in model container [2024-11-20 17:43:11,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:43:11" (2/3) ... [2024-11-20 17:43:11,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a6871b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:43:11, skipping insertion in model container [2024-11-20 17:43:11,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:43:11" (3/3) ... [2024-11-20 17:43:11,907 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2024-11-20 17:43:11,921 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:43:11,922 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 17:43:11,922 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:43:11,966 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 17:43:11,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 88 flow [2024-11-20 17:43:12,022 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-11-20 17:43:12,022 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:43:12,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 1/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-20 17:43:12,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 88 flow [2024-11-20 17:43:12,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 80 flow [2024-11-20 17:43:12,049 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:43:12,057 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;@64c482ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:43:12,058 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 17:43:12,078 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:43:12,081 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2024-11-20 17:43:12,081 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:43:12,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:43:12,082 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, 1, 1, 1] [2024-11-20 17:43:12,083 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:43:12,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:43:12,089 INFO L85 PathProgramCache]: Analyzing trace with hash 57164797, now seen corresponding path program 1 times [2024-11-20 17:43:12,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:43:12,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730091565] [2024-11-20 17:43:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:43:12,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:43:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:43:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:43:12,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:43:12,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730091565] [2024-11-20 17:43:12,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730091565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:43:12,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:43:12,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:43:12,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920154937] [2024-11-20 17:43:12,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:43:12,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:43:12,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:43:12,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:43:12,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:43:12,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-11-20 17:43:12,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-20 17:43:12,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:43:12,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-11-20 17:43:12,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:43:12,678 INFO L124 PetriNetUnfolderBase]: 110/248 cut-off events. [2024-11-20 17:43:12,678 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-20 17:43:12,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 248 events. 110/248 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 972 event pairs, 68 based on Foata normal form. 2/235 useless extension candidates. Maximal degree in co-relation 421. Up to 139 conditions per place. [2024-11-20 17:43:12,687 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 24 selfloop transitions, 4 changer transitions 3/41 dead transitions. [2024-11-20 17:43:12,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 41 transitions, 162 flow [2024-11-20 17:43:12,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:43:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:43:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-20 17:43:12,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-11-20 17:43:12,701 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 80 flow. Second operand 3 states and 72 transitions. [2024-11-20 17:43:12,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 41 transitions, 162 flow [2024-11-20 17:43:12,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 17:43:12,707 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 82 flow [2024-11-20 17:43:12,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-11-20 17:43:12,716 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2024-11-20 17:43:12,716 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 82 flow [2024-11-20 17:43:12,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-20 17:43:12,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:43:12,717 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, 1, 1, 1, 1] [2024-11-20 17:43:12,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:43:12,718 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:43:12,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:43:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1878717109, now seen corresponding path program 1 times [2024-11-20 17:43:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:43:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101760032] [2024-11-20 17:43:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:43:12,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:43:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:43:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:43:12,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:43:12,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101760032] [2024-11-20 17:43:12,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101760032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:43:12,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:43:12,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:43:12,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043877058] [2024-11-20 17:43:12,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:43:12,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:43:12,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:43:12,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:43:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:43:12,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-20 17:43:12,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-11-20 17:43:12,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:43:12,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-20 17:43:12,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:43:12,985 INFO L124 PetriNetUnfolderBase]: 124/266 cut-off events. [2024-11-20 17:43:12,986 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 17:43:12,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 266 events. 124/266 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 964 event pairs, 102 based on Foata normal form. 13/274 useless extension candidates. Maximal degree in co-relation 421. Up to 211 conditions per place. [2024-11-20 17:43:12,989 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 26 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2024-11-20 17:43:12,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 159 flow [2024-11-20 17:43:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:43:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:43:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-20 17:43:12,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855855855855856 [2024-11-20 17:43:12,992 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 82 flow. Second operand 3 states and 65 transitions. [2024-11-20 17:43:12,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 159 flow [2024-11-20 17:43:12,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:43:12,994 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 91 flow [2024-11-20 17:43:12,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-11-20 17:43:12,996 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-20 17:43:12,996 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 91 flow [2024-11-20 17:43:12,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-11-20 17:43:12,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:43:12,996 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, 1, 1, 1, 1] [2024-11-20 17:43:12,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:43:12,997 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:43:12,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:43:12,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1623739383, now seen corresponding path program 2 times [2024-11-20 17:43:12,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:43:12,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951038638] [2024-11-20 17:43:12,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:43:12,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:43:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:43:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:43:13,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:43:13,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951038638] [2024-11-20 17:43:13,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951038638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:43:13,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:43:13,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:43:13,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428984096] [2024-11-20 17:43:13,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:43:13,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:43:13,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:43:13,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:43:13,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:43:13,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-11-20 17:43:13,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:43:13,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:43:13,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-11-20 17:43:13,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:43:13,359 INFO L124 PetriNetUnfolderBase]: 111/286 cut-off events. [2024-11-20 17:43:13,359 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-20 17:43:13,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 286 events. 111/286 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1250 event pairs, 41 based on Foata normal form. 4/286 useless extension candidates. Maximal degree in co-relation 184. Up to 102 conditions per place. [2024-11-20 17:43:13,364 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 21 selfloop transitions, 8 changer transitions 13/52 dead transitions. [2024-11-20 17:43:13,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 219 flow [2024-11-20 17:43:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:43:13,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:43:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-20 17:43:13,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5837837837837838 [2024-11-20 17:43:13,369 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 91 flow. Second operand 5 states and 108 transitions. [2024-11-20 17:43:13,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 219 flow [2024-11-20 17:43:13,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:43:13,373 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 113 flow [2024-11-20 17:43:13,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-11-20 17:43:13,374 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2024-11-20 17:43:13,375 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 113 flow [2024-11-20 17:43:13,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:43:13,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:43:13,376 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, 1, 1, 1, 1] [2024-11-20 17:43:13,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 17:43:13,377 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:43:13,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:43:13,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2021959027, now seen corresponding path program 3 times [2024-11-20 17:43:13,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:43:13,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182172564] [2024-11-20 17:43:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:43:13,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:43:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:43:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:43:13,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:43:13,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182172564] [2024-11-20 17:43:13,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182172564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:43:13,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:43:13,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:43:13,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626096650] [2024-11-20 17:43:13,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:43:13,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:43:13,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:43:13,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:43:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:43:13,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-11-20 17:43:13,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:43:13,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:43:13,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-11-20 17:43:13,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:43:13,588 INFO L124 PetriNetUnfolderBase]: 23/79 cut-off events. [2024-11-20 17:43:13,588 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-20 17:43:13,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 79 events. 23/79 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 137 event pairs, 8 based on Foata normal form. 4/82 useless extension candidates. Maximal degree in co-relation 107. Up to 26 conditions per place. [2024-11-20 17:43:13,589 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2024-11-20 17:43:13,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 161 flow [2024-11-20 17:43:13,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:43:13,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:43:13,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-11-20 17:43:13,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-11-20 17:43:13,591 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 113 flow. Second operand 5 states and 93 transitions. [2024-11-20 17:43:13,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 161 flow [2024-11-20 17:43:13,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 135 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-20 17:43:13,592 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-11-20 17:43:13,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-11-20 17:43:13,595 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-20 17:43:13,595 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-11-20 17:43:13,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:43:13,598 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-20 17:43:13,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-20 17:43:13,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-20 17:43:13,599 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-20 17:43:13,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 17:43:13,600 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-20 17:43:13,603 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 17:43:13,603 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 17:43:13,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:43:13 BasicIcfg [2024-11-20 17:43:13,612 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 17:43:13,613 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 17:43:13,613 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 17:43:13,613 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 17:43:13,614 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:43:11" (3/4) ... [2024-11-20 17:43:13,616 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 17:43:13,624 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-20 17:43:13,624 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-20 17:43:13,630 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2024-11-20 17:43:13,631 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-20 17:43:13,631 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-20 17:43:13,631 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 17:43:13,725 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 17:43:13,727 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 17:43:13,727 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 17:43:13,728 INFO L158 Benchmark]: Toolchain (without parser) took 2758.73ms. Allocated memory was 172.0MB in the beginning and 255.9MB in the end (delta: 83.9MB). Free memory was 115.2MB in the beginning and 116.8MB in the end (delta: -1.6MB). Peak memory consumption was 85.4MB. Max. memory is 16.1GB. [2024-11-20 17:43:13,728 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 172.0MB. Free memory is still 137.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:43:13,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.75ms. Allocated memory is still 172.0MB. Free memory was 115.2MB in the beginning and 102.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-20 17:43:13,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.06ms. Allocated memory is still 172.0MB. Free memory was 102.6MB in the beginning and 100.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:43:13,729 INFO L158 Benchmark]: Boogie Preprocessor took 39.53ms. Allocated memory is still 172.0MB. Free memory was 100.6MB in the beginning and 98.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:43:13,730 INFO L158 Benchmark]: RCFGBuilder took 544.96ms. Allocated memory is still 172.0MB. Free memory was 98.5MB in the beginning and 73.7MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-20 17:43:13,730 INFO L158 Benchmark]: TraceAbstraction took 1712.88ms. Allocated memory was 172.0MB in the beginning and 255.9MB in the end (delta: 83.9MB). Free memory was 73.2MB in the beginning and 122.1MB in the end (delta: -48.9MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2024-11-20 17:43:13,731 INFO L158 Benchmark]: Witness Printer took 114.81ms. Allocated memory is still 255.9MB. Free memory was 122.1MB in the beginning and 116.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-20 17:43:13,732 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 172.0MB. Free memory is still 137.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.75ms. Allocated memory is still 172.0MB. Free memory was 115.2MB in the beginning and 102.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.06ms. Allocated memory is still 172.0MB. Free memory was 102.6MB in the beginning and 100.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.53ms. Allocated memory is still 172.0MB. Free memory was 100.6MB in the beginning and 98.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 544.96ms. Allocated memory is still 172.0MB. Free memory was 98.5MB in the beginning and 73.7MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1712.88ms. Allocated memory was 172.0MB in the beginning and 255.9MB in the end (delta: 83.9MB). Free memory was 73.2MB in the beginning and 122.1MB in the end (delta: -48.9MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. * Witness Printer took 114.81ms. Allocated memory is still 255.9MB. Free memory was 122.1MB in the beginning and 116.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 61]: 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, 55 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 228 IncrementalHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 7 mSDtfsCounter, 228 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 0.6s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 267 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 17:43:13,756 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