./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/chl-file-item-trans.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/chl-file-item-trans.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 408d8d7e58240f749ab11087191b04ec647cfea8447827b0505b793eb68a9c0a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:40:17,701 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:40:17,767 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:40:17,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:40:17,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:40:17,797 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:40:17,798 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:40:17,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:40:17,799 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:40:17,799 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:40:17,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:40:17,800 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:40:17,800 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:40:17,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:40:17,802 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:40:17,803 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:40:17,803 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:40:17,803 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:40:17,804 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:40:17,804 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:40:17,804 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:40:17,804 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:40:17,805 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:40:17,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:40:17,805 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:40:17,805 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:40:17,806 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:40:17,806 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:40:17,806 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:40:17,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:40:17,807 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:40:17,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:40:17,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:40:17,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:40:17,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:40:17,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:40:17,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:40:17,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:40:17,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:40:17,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:40:17,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:40:17,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:40:17,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 408d8d7e58240f749ab11087191b04ec647cfea8447827b0505b793eb68a9c0a [2024-11-20 17:40:17,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:40:18,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:40:18,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:40:18,014 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:40:18,014 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:40:18,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2024-11-20 17:40:19,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:40:19,552 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:40:19,552 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2024-11-20 17:40:19,560 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0824905/b8c3f93b8599424dadd2866293cbc673/FLAGc83d9ae47 [2024-11-20 17:40:19,964 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0824905/b8c3f93b8599424dadd2866293cbc673 [2024-11-20 17:40:19,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:40:19,970 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:40:19,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:40:19,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:40:19,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:40:19,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:40:19" (1/1) ... [2024-11-20 17:40:19,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63342e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:19, skipping insertion in model container [2024-11-20 17:40:19,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:40:19" (1/1) ... [2024-11-20 17:40:20,018 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:40:20,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:40:20,283 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:40:20,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:40:20,322 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:40:20,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20 WrapperNode [2024-11-20 17:40:20,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:40:20,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:40:20,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:40:20,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:40:20,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (1/1) ... [2024-11-20 17:40:20,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (1/1) ... [2024-11-20 17:40:20,370 INFO L138 Inliner]: procedures = 22, calls = 16, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 194 [2024-11-20 17:40:20,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:40:20,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:40:20,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:40:20,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:40:20,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (1/1) ... [2024-11-20 17:40:20,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (1/1) ... [2024-11-20 17:40:20,385 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (1/1) ... [2024-11-20 17:40:20,400 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 17:40:20,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (1/1) ... [2024-11-20 17:40:20,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (1/1) ... [2024-11-20 17:40:20,404 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (1/1) ... [2024-11-20 17:40:20,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (1/1) ... [2024-11-20 17:40:20,411 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (1/1) ... [2024-11-20 17:40:20,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (1/1) ... [2024-11-20 17:40:20,414 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:40:20,417 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:40:20,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:40:20,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:40:20,418 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (1/1) ... [2024-11-20 17:40:20,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:40:20,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:40:20,452 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 17:40:20,455 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 17:40:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:40:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 17:40:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 17:40:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 17:40:20,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 17:40:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 17:40:20,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 17:40:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:40:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:40:20,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:40:20,520 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 17:40:20,622 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:40:20,625 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:40:20,923 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:40:20,924 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:40:21,316 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:40:21,317 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 17:40:21,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:40:21 BoogieIcfgContainer [2024-11-20 17:40:21,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:40:21,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:40:21,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:40:21,325 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:40:21,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:40:19" (1/3) ... [2024-11-20 17:40:21,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aec66a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:40:21, skipping insertion in model container [2024-11-20 17:40:21,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:20" (2/3) ... [2024-11-20 17:40:21,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aec66a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:40:21, skipping insertion in model container [2024-11-20 17:40:21,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:40:21" (3/3) ... [2024-11-20 17:40:21,328 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2024-11-20 17:40:21,344 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:40:21,345 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 17:40:21,345 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:40:21,409 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 17:40:21,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 21 transitions, 63 flow [2024-11-20 17:40:21,468 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-11-20 17:40:21,470 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 17:40:21,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 18 events. 0/18 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-20 17:40:21,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 21 transitions, 63 flow [2024-11-20 17:40:21,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 17 transitions, 52 flow [2024-11-20 17:40:21,485 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:40:21,494 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;@3080529f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:40:21,495 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-20 17:40:21,509 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:40:21,509 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-20 17:40:21,510 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 17:40:21,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:40:21,511 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:40:21,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:40:21,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:40:21,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1907454541, now seen corresponding path program 1 times [2024-11-20 17:40:21,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:40:21,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585520382] [2024-11-20 17:40:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:40:21,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:40:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:40:22,735 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 17:40:22,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:40:22,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585520382] [2024-11-20 17:40:22,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585520382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:40:22,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:40:22,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:40:22,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723838862] [2024-11-20 17:40:22,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:40:22,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:40:22,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:40:22,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:40:22,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:40:22,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-20 17:40:22,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:40:22,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:40:22,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-20 17:40:22,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:40:23,168 INFO L124 PetriNetUnfolderBase]: 32/85 cut-off events. [2024-11-20 17:40:23,171 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-20 17:40:23,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 85 events. 32/85 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 223 event pairs, 1 based on Foata normal form. 3/88 useless extension candidates. Maximal degree in co-relation 145. Up to 34 conditions per place. [2024-11-20 17:40:23,174 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 26 selfloop transitions, 6 changer transitions 5/38 dead transitions. [2024-11-20 17:40:23,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 198 flow [2024-11-20 17:40:23,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:40:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:40:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-11-20 17:40:23,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-20 17:40:23,187 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 52 flow. Second operand 6 states and 70 transitions. [2024-11-20 17:40:23,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 198 flow [2024-11-20 17:40:23,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 17:40:23,191 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 69 flow [2024-11-20 17:40:23,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2024-11-20 17:40:23,195 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-11-20 17:40:23,195 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 69 flow [2024-11-20 17:40:23,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:40:23,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:40:23,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:40:23,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:40:23,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:40:23,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:40:23,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1773786969, now seen corresponding path program 2 times [2024-11-20 17:40:23,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:40:23,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511713903] [2024-11-20 17:40:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:40:23,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:40:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:40:24,323 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 17:40:24,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:40:24,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511713903] [2024-11-20 17:40:24,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511713903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:40:24,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:40:24,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:40:24,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008650445] [2024-11-20 17:40:24,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:40:24,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:40:24,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:40:24,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:40:24,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:40:24,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-20 17:40:24,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:40:24,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:40:24,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-20 17:40:24,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:40:24,624 INFO L124 PetriNetUnfolderBase]: 31/97 cut-off events. [2024-11-20 17:40:24,625 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-20 17:40:24,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 97 events. 31/97 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 321 event pairs, 4 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 256. Up to 46 conditions per place. [2024-11-20 17:40:24,628 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 26 selfloop transitions, 7 changer transitions 8/42 dead transitions. [2024-11-20 17:40:24,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 220 flow [2024-11-20 17:40:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:40:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:40:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-11-20 17:40:24,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-11-20 17:40:24,631 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 69 flow. Second operand 6 states and 69 transitions. [2024-11-20 17:40:24,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 220 flow [2024-11-20 17:40:24,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 216 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 17:40:24,634 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 92 flow [2024-11-20 17:40:24,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2024-11-20 17:40:24,636 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2024-11-20 17:40:24,636 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 92 flow [2024-11-20 17:40:24,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:40:24,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:40:24,636 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:40:24,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:40:24,637 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:40:24,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:40:24,638 INFO L85 PathProgramCache]: Analyzing trace with hash -894356649, now seen corresponding path program 3 times [2024-11-20 17:40:24,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:40:24,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886090608] [2024-11-20 17:40:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:40:24,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:40:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:40:25,277 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 17:40:25,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:40:25,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886090608] [2024-11-20 17:40:25,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886090608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:40:25,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:40:25,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:40:25,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481231360] [2024-11-20 17:40:25,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:40:25,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:40:25,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:40:25,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:40:25,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:40:25,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-20 17:40:25,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:40:25,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:40:25,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-20 17:40:25,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:40:25,518 INFO L124 PetriNetUnfolderBase]: 27/83 cut-off events. [2024-11-20 17:40:25,518 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-11-20 17:40:25,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 83 events. 27/83 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 241 event pairs, 1 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 262. Up to 38 conditions per place. [2024-11-20 17:40:25,519 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 23 selfloop transitions, 6 changer transitions 9/39 dead transitions. [2024-11-20 17:40:25,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 228 flow [2024-11-20 17:40:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:40:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:40:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-11-20 17:40:25,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-11-20 17:40:25,523 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 92 flow. Second operand 6 states and 68 transitions. [2024-11-20 17:40:25,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 228 flow [2024-11-20 17:40:25,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 213 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-20 17:40:25,527 INFO L231 Difference]: Finished difference. Result has 36 places, 19 transitions, 96 flow [2024-11-20 17:40:25,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2024-11-20 17:40:25,528 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2024-11-20 17:40:25,529 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 19 transitions, 96 flow [2024-11-20 17:40:25,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:40:25,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:40:25,529 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:40:25,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 17:40:25,529 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:40:25,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:40:25,530 INFO L85 PathProgramCache]: Analyzing trace with hash -918480315, now seen corresponding path program 4 times [2024-11-20 17:40:25,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:40:25,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783318572] [2024-11-20 17:40:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:40:25,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:40:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:40:26,459 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 17:40:26,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:40:26,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783318572] [2024-11-20 17:40:26,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783318572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:40:26,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:40:26,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:40:26,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788547804] [2024-11-20 17:40:26,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:40:26,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:40:26,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:40:26,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:40:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:40:26,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-20 17:40:26,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 19 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:40:26,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:40:26,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-20 17:40:26,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:40:26,760 INFO L124 PetriNetUnfolderBase]: 14/47 cut-off events. [2024-11-20 17:40:26,760 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-20 17:40:26,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 47 events. 14/47 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 1 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2024-11-20 17:40:26,765 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 16 selfloop transitions, 4 changer transitions 8/29 dead transitions. [2024-11-20 17:40:26,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 177 flow [2024-11-20 17:40:26,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:40:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:40:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2024-11-20 17:40:26,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-11-20 17:40:26,767 INFO L175 Difference]: Start difference. First operand has 36 places, 19 transitions, 96 flow. Second operand 6 states and 57 transitions. [2024-11-20 17:40:26,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 177 flow [2024-11-20 17:40:26,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 156 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-20 17:40:26,768 INFO L231 Difference]: Finished difference. Result has 34 places, 17 transitions, 71 flow [2024-11-20 17:40:26,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=34, PETRI_TRANSITIONS=17} [2024-11-20 17:40:26,769 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2024-11-20 17:40:26,769 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 17 transitions, 71 flow [2024-11-20 17:40:26,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:40:26,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:40:26,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:40:26,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 17:40:26,774 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:40:26,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:40:26,775 INFO L85 PathProgramCache]: Analyzing trace with hash 598179495, now seen corresponding path program 5 times [2024-11-20 17:40:26,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:40:26,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821040266] [2024-11-20 17:40:26,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:40:26,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:40:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:40:27,572 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 17:40:27,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:40:27,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821040266] [2024-11-20 17:40:27,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821040266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:40:27,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:40:27,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:40:27,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603985177] [2024-11-20 17:40:27,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:40:27,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:40:27,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:40:27,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:40:27,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:40:27,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-20 17:40:27,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 17 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:40:27,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:40:27,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-20 17:40:27,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:40:27,789 INFO L124 PetriNetUnfolderBase]: 8/37 cut-off events. [2024-11-20 17:40:27,790 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-20 17:40:27,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 37 events. 8/37 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 116. Up to 17 conditions per place. [2024-11-20 17:40:27,790 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 13 selfloop transitions, 3 changer transitions 10/27 dead transitions. [2024-11-20 17:40:27,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 154 flow [2024-11-20 17:40:27,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:40:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:40:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2024-11-20 17:40:27,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-11-20 17:40:27,795 INFO L175 Difference]: Start difference. First operand has 34 places, 17 transitions, 71 flow. Second operand 6 states and 57 transitions. [2024-11-20 17:40:27,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 154 flow [2024-11-20 17:40:27,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 132 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-20 17:40:27,796 INFO L231 Difference]: Finished difference. Result has 32 places, 15 transitions, 55 flow [2024-11-20 17:40:27,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=55, PETRI_PLACES=32, PETRI_TRANSITIONS=15} [2024-11-20 17:40:27,797 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2024-11-20 17:40:27,797 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 15 transitions, 55 flow [2024-11-20 17:40:27,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:40:27,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:40:27,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:40:27,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 17:40:27,797 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:40:27,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:40:27,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1453486149, now seen corresponding path program 6 times [2024-11-20 17:40:27,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:40:27,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678526773] [2024-11-20 17:40:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:40:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:40:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:40:28,530 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 17:40:28,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:40:28,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678526773] [2024-11-20 17:40:28,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678526773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:40:28,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:40:28,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:40:28,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777721296] [2024-11-20 17:40:28,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:40:28,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:40:28,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:40:28,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:40:28,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:40:28,532 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2024-11-20 17:40:28,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 15 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:40:28,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:40:28,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2024-11-20 17:40:28,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:40:28,697 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-11-20 17:40:28,698 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-20 17:40:28,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 19 events. 3/19 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 60. Up to 7 conditions per place. [2024-11-20 17:40:28,698 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2024-11-20 17:40:28,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 16 transitions, 87 flow [2024-11-20 17:40:28,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:40:28,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:40:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 47 transitions. [2024-11-20 17:40:28,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-11-20 17:40:28,699 INFO L175 Difference]: Start difference. First operand has 32 places, 15 transitions, 55 flow. Second operand 6 states and 47 transitions. [2024-11-20 17:40:28,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 16 transitions, 87 flow [2024-11-20 17:40:28,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 16 transitions, 74 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-20 17:40:28,700 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2024-11-20 17:40:28,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2024-11-20 17:40:28,700 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-11-20 17:40:28,700 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2024-11-20 17:40:28,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 17:40:28,706 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2024-11-20 17:40:28,707 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-20 17:40:28,707 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-20 17:40:28,708 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-20 17:40:28,708 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-11-20 17:40:28,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 17:40:28,708 INFO L407 BasicCegarLoop]: Path program histogram: [6] [2024-11-20 17:40:28,711 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 17:40:28,711 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 17:40:28,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:40:28 BasicIcfg [2024-11-20 17:40:28,715 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 17:40:28,716 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 17:40:28,716 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 17:40:28,716 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 17:40:28,716 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:40:21" (3/4) ... [2024-11-20 17:40:28,718 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 17:40:28,721 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-20 17:40:28,721 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-20 17:40:28,721 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-20 17:40:28,724 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 88 nodes and edges [2024-11-20 17:40:28,725 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-20 17:40:28,725 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-20 17:40:28,725 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 17:40:28,785 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 17:40:28,786 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 17:40:28,786 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 17:40:28,786 INFO L158 Benchmark]: Toolchain (without parser) took 8819.32ms. Allocated memory was 184.5MB in the beginning and 482.3MB in the end (delta: 297.8MB). Free memory was 130.7MB in the beginning and 250.1MB in the end (delta: -119.4MB). Peak memory consumption was 180.6MB. Max. memory is 16.1GB. [2024-11-20 17:40:28,786 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:40:28,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.80ms. Allocated memory is still 184.5MB. Free memory was 130.3MB in the beginning and 116.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-20 17:40:28,787 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.59ms. Allocated memory is still 184.5MB. Free memory was 116.7MB in the beginning and 114.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:40:28,787 INFO L158 Benchmark]: Boogie Preprocessor took 43.22ms. Allocated memory is still 184.5MB. Free memory was 114.6MB in the beginning and 112.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:40:28,787 INFO L158 Benchmark]: RCFGBuilder took 900.29ms. Allocated memory was 184.5MB in the beginning and 295.7MB in the end (delta: 111.1MB). Free memory was 112.1MB in the beginning and 225.1MB in the end (delta: -113.0MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. [2024-11-20 17:40:28,788 INFO L158 Benchmark]: TraceAbstraction took 7395.52ms. Allocated memory was 295.7MB in the beginning and 482.3MB in the end (delta: 186.6MB). Free memory was 224.0MB in the beginning and 255.4MB in the end (delta: -31.3MB). Peak memory consumption was 154.3MB. Max. memory is 16.1GB. [2024-11-20 17:40:28,788 INFO L158 Benchmark]: Witness Printer took 70.32ms. Allocated memory is still 482.3MB. Free memory was 255.4MB in the beginning and 250.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-20 17:40:28,789 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.80ms. Allocated memory is still 184.5MB. Free memory was 130.3MB in the beginning and 116.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.59ms. Allocated memory is still 184.5MB. Free memory was 116.7MB in the beginning and 114.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.22ms. Allocated memory is still 184.5MB. Free memory was 114.6MB in the beginning and 112.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 900.29ms. Allocated memory was 184.5MB in the beginning and 295.7MB in the end (delta: 111.1MB). Free memory was 112.1MB in the beginning and 225.1MB in the end (delta: -113.0MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7395.52ms. Allocated memory was 295.7MB in the beginning and 482.3MB in the end (delta: 186.6MB). Free memory was 224.0MB in the beginning and 255.4MB in the end (delta: -31.3MB). Peak memory consumption was 154.3MB. Max. memory is 16.1GB. * Witness Printer took 70.32ms. Allocated memory is still 482.3MB. Free memory was 255.4MB in the beginning and 250.1MB 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 7 procedures, 31 locations, 5 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: 7.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 351 IncrementalHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 0 mSDtfsCounter, 351 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=3, InterpolantAutomatonStates: 36, 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, 0.2s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 1234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 17:40:28,804 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