./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc 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/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-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:47:57,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:47:57,310 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:47:57,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:47:57,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:47:57,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:47:57,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:47:57,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:47:57,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:47:57,341 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:47:57,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:47:57,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:47:57,350 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:47:57,350 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:47:57,351 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:47:57,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:47:57,355 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:47:57,355 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:47:57,355 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:47:57,356 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:47:57,360 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:47:57,361 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:47:57,361 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:47:57,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:47:57,361 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:47:57,361 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:47:57,361 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:47:57,362 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:47:57,362 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:47:57,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:47:57,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:47:57,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:47:57,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:47:57,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:47:57,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:47:57,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:47:57,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:47:57,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:47:57,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:47:57,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:47:57,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:47:57,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:47:57,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c046e6043edd4a9981865f273deb13bc96b2518d014dd6435bf0abb656de540 [2024-11-19 09:47:57,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:47:57,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:47:57,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:47:57,627 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:47:57,627 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:47:57,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2024-11-19 09:47:58,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:47:59,130 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:47:59,130 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2024-11-19 09:47:59,137 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5c9a6b4/c389d55c9ca24f08aaa7f9a4b77042d7/FLAGa5652e2e9 [2024-11-19 09:47:59,147 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5c9a6b4/c389d55c9ca24f08aaa7f9a4b77042d7 [2024-11-19 09:47:59,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:47:59,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:47:59,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:47:59,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:47:59,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:47:59,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398835db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59, skipping insertion in model container [2024-11-19 09:47:59,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,176 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:47:59,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:47:59,365 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:47:59,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:47:59,399 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:47:59,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59 WrapperNode [2024-11-19 09:47:59,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:47:59,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:47:59,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:47:59,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:47:59,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,434 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 110 [2024-11-19 09:47:59,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:47:59,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:47:59,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:47:59,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:47:59,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,446 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,457 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]. [2024-11-19 09:47:59,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:47:59,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:47:59,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:47:59,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:47:59,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (1/1) ... [2024-11-19 09:47:59,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:47:59,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:59,505 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) [2024-11-19 09:47:59,508 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 [2024-11-19 09:47:59,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:47:59,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:47:59,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:47:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:47:59,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:47:59,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:47:59,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:47:59,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:47:59,553 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:47:59,632 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:47:59,634 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:47:59,793 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:47:59,794 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:47:59,914 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:47:59,914 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 09:47:59,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:59 BoogieIcfgContainer [2024-11-19 09:47:59,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:47:59,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:47:59,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:47:59,923 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:47:59,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:47:59" (1/3) ... [2024-11-19 09:47:59,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5233e752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:47:59, skipping insertion in model container [2024-11-19 09:47:59,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:47:59" (2/3) ... [2024-11-19 09:47:59,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5233e752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:47:59, skipping insertion in model container [2024-11-19 09:47:59,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:59" (3/3) ... [2024-11-19 09:47:59,928 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2024-11-19 09:47:59,946 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:47:59,947 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:47:59,947 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:47:59,994 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:48:00,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 88 flow [2024-11-19 09:48:00,064 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-11-19 09:48:00,066 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:48:00,068 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. [2024-11-19 09:48:00,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 88 flow [2024-11-19 09:48:00,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 80 flow [2024-11-19 09:48:00,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:48:00,092 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;@69147701, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:48:00,093 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:48:00,110 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:48:00,110 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2024-11-19 09:48:00,110 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:48:00,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:48:00,111 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] [2024-11-19 09:48:00,112 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)] === [2024-11-19 09:48:00,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:48:00,118 INFO L85 PathProgramCache]: Analyzing trace with hash 57164797, now seen corresponding path program 1 times [2024-11-19 09:48:00,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:48:00,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839213665] [2024-11-19 09:48:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:48:00,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:48:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:48:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:00,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:48:00,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839213665] [2024-11-19 09:48:00,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839213665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:48:00,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:48:00,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:48:00,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684594031] [2024-11-19 09:48:00,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:48:00,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:48:00,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:48:00,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:48:00,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:48:00,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-11-19 09:48:00,546 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) [2024-11-19 09:48:00,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:48:00,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-11-19 09:48:00,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:48:00,683 INFO L124 PetriNetUnfolderBase]: 110/248 cut-off events. [2024-11-19 09:48:00,683 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-19 09:48:00,685 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. [2024-11-19 09:48:00,687 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 24 selfloop transitions, 4 changer transitions 3/41 dead transitions. [2024-11-19 09:48:00,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 41 transitions, 162 flow [2024-11-19 09:48:00,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:48:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:48:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-19 09:48:00,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-11-19 09:48:00,702 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 80 flow. Second operand 3 states and 72 transitions. [2024-11-19 09:48:00,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 41 transitions, 162 flow [2024-11-19 09:48:00,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:48:00,708 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 82 flow [2024-11-19 09:48:00,710 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} [2024-11-19 09:48:00,713 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2024-11-19 09:48:00,714 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 82 flow [2024-11-19 09:48:00,714 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) [2024-11-19 09:48:00,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:48:00,714 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] [2024-11-19 09:48:00,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:48:00,715 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)] === [2024-11-19 09:48:00,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:48:00,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1878717109, now seen corresponding path program 1 times [2024-11-19 09:48:00,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:48:00,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897212015] [2024-11-19 09:48:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:48:00,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:48:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:48:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:00,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:48:00,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897212015] [2024-11-19 09:48:00,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897212015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:48:00,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:48:00,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:48:00,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462036961] [2024-11-19 09:48:00,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:48:00,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:48:00,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:48:00,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:48:00,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:48:00,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-11-19 09:48:00,818 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) [2024-11-19 09:48:00,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:48:00,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-11-19 09:48:00,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:48:00,899 INFO L124 PetriNetUnfolderBase]: 124/266 cut-off events. [2024-11-19 09:48:00,899 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 09:48:00,900 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. [2024-11-19 09:48:00,901 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 26 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2024-11-19 09:48:00,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 159 flow [2024-11-19 09:48:00,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:48:00,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:48:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-19 09:48:00,906 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855855855855856 [2024-11-19 09:48:00,906 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 82 flow. Second operand 3 states and 65 transitions. [2024-11-19 09:48:00,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 159 flow [2024-11-19 09:48:00,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:48:00,907 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 91 flow [2024-11-19 09:48:00,907 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} [2024-11-19 09:48:00,908 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-19 09:48:00,908 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 91 flow [2024-11-19 09:48:00,908 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) [2024-11-19 09:48:00,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:48:00,909 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] [2024-11-19 09:48:00,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:48:00,909 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)] === [2024-11-19 09:48:00,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:48:00,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1623739383, now seen corresponding path program 2 times [2024-11-19 09:48:00,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:48:00,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508708750] [2024-11-19 09:48:00,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:48:00,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:48:00,937 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:48:00,937 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:48:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:01,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:48:01,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508708750] [2024-11-19 09:48:01,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508708750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:48:01,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:48:01,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:48:01,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497492978] [2024-11-19 09:48:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:48:01,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:48:01,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:48:01,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:48:01,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:48:01,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-11-19 09:48:01,061 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) [2024-11-19 09:48:01,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:48:01,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-11-19 09:48:01,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:48:01,196 INFO L124 PetriNetUnfolderBase]: 111/286 cut-off events. [2024-11-19 09:48:01,197 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-19 09:48:01,198 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. [2024-11-19 09:48:01,199 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 21 selfloop transitions, 8 changer transitions 13/52 dead transitions. [2024-11-19 09:48:01,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 219 flow [2024-11-19 09:48:01,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:48:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:48:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-19 09:48:01,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5837837837837838 [2024-11-19 09:48:01,200 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 91 flow. Second operand 5 states and 108 transitions. [2024-11-19 09:48:01,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 219 flow [2024-11-19 09:48:01,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:48:01,203 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 113 flow [2024-11-19 09:48:01,204 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} [2024-11-19 09:48:01,205 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2024-11-19 09:48:01,205 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 113 flow [2024-11-19 09:48:01,205 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) [2024-11-19 09:48:01,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:48:01,205 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] [2024-11-19 09:48:01,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:48:01,206 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)] === [2024-11-19 09:48:01,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:48:01,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2021959027, now seen corresponding path program 3 times [2024-11-19 09:48:01,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:48:01,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061314272] [2024-11-19 09:48:01,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:48:01,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:48:01,223 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:48:01,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:48:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:48:01,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:48:01,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061314272] [2024-11-19 09:48:01,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061314272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:48:01,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:48:01,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:48:01,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057343650] [2024-11-19 09:48:01,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:48:01,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:48:01,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:48:01,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:48:01,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:48:01,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-11-19 09:48:01,312 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) [2024-11-19 09:48:01,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:48:01,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-11-19 09:48:01,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:48:01,382 INFO L124 PetriNetUnfolderBase]: 23/79 cut-off events. [2024-11-19 09:48:01,383 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-19 09:48:01,383 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. [2024-11-19 09:48:01,384 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2024-11-19 09:48:01,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 161 flow [2024-11-19 09:48:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:48:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:48:01,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-11-19 09:48:01,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-11-19 09:48:01,386 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 113 flow. Second operand 5 states and 93 transitions. [2024-11-19 09:48:01,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 161 flow [2024-11-19 09:48:01,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 135 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-19 09:48:01,388 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-11-19 09:48:01,389 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} [2024-11-19 09:48:01,389 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-19 09:48:01,390 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-11-19 09:48:01,390 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) [2024-11-19 09:48:01,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-19 09:48:01,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-19 09:48:01,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-19 09:48:01,393 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-19 09:48:01,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:48:01,394 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-19 09:48:01,397 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 09:48:01,397 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 09:48:01,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:48:01 BasicIcfg [2024-11-19 09:48:01,403 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 09:48:01,403 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 09:48:01,403 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 09:48:01,404 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 09:48:01,404 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:47:59" (3/4) ... [2024-11-19 09:48:01,407 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 09:48:01,409 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-19 09:48:01,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-19 09:48:01,416 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2024-11-19 09:48:01,417 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-19 09:48:01,417 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-19 09:48:01,417 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 09:48:01,509 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 09:48:01,510 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 09:48:01,510 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 09:48:01,510 INFO L158 Benchmark]: Toolchain (without parser) took 2357.17ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 64.4MB in the beginning and 114.2MB in the end (delta: -49.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:48:01,511 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 134.2MB. Free memory is still 101.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:48:01,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.76ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 64.2MB in the beginning and 141.2MB in the end (delta: -77.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-19 09:48:01,511 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.83ms. Allocated memory is still 169.9MB. Free memory was 141.2MB in the beginning and 139.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 09:48:01,511 INFO L158 Benchmark]: Boogie Preprocessor took 29.72ms. Allocated memory is still 169.9MB. Free memory was 139.2MB in the beginning and 137.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 09:48:01,513 INFO L158 Benchmark]: RCFGBuilder took 449.22ms. Allocated memory is still 169.9MB. Free memory was 137.1MB in the beginning and 112.8MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-19 09:48:01,513 INFO L158 Benchmark]: TraceAbstraction took 1483.56ms. Allocated memory is still 169.9MB. Free memory was 111.9MB in the beginning and 118.4MB in the end (delta: -6.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 09:48:01,513 INFO L158 Benchmark]: Witness Printer took 106.38ms. Allocated memory is still 169.9MB. Free memory was 118.4MB in the beginning and 114.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 09:48:01,516 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 134.2MB. Free memory is still 101.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.76ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 64.2MB in the beginning and 141.2MB in the end (delta: -77.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.83ms. Allocated memory is still 169.9MB. Free memory was 141.2MB in the beginning and 139.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.72ms. Allocated memory is still 169.9MB. Free memory was 139.2MB in the beginning and 137.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 449.22ms. Allocated memory is still 169.9MB. Free memory was 137.1MB in the beginning and 112.8MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1483.56ms. Allocated memory is still 169.9MB. Free memory was 111.9MB in the beginning and 118.4MB in the end (delta: -6.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 106.38ms. Allocated memory is still 169.9MB. Free memory was 118.4MB in the beginning and 114.2MB 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: 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: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, 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, 0.0s 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, 0.5s 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! [2024-11-19 09:48:01,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE