./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-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 1cae81f1fa2e32e73e0569957bc583bbf3478ffc71be87871acb9920c44bcfd4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:50:36,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:50:36,295 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:50:36,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:50:36,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:50:36,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:50:36,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:50:36,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:50:36,335 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:50:36,335 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:50:36,336 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:50:36,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:50:36,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:50:36,340 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:50:36,340 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:50:36,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:50:36,341 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:50:36,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:50:36,341 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:50:36,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:50:36,342 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:50:36,345 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:50:36,345 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:50:36,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:50:36,346 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:50:36,346 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:50:36,346 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:50:36,346 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:50:36,347 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:50:36,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:50:36,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:50:36,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:50:36,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:50:36,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:50:36,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:50:36,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:50:36,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:50:36,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:50:36,350 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:50:36,350 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:50:36,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:50:36,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:50:36,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cae81f1fa2e32e73e0569957bc583bbf3478ffc71be87871acb9920c44bcfd4 [2024-10-14 19:50:36,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:50:36,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:50:36,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:50:36,626 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:50:36,626 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:50:36,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2024-10-14 19:50:38,014 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:50:38,206 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:50:38,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2024-10-14 19:50:38,213 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b30f28b7/0f3a3493091d48d3bd9692c2ee640fa7/FLAG7619b7bed [2024-10-14 19:50:38,225 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b30f28b7/0f3a3493091d48d3bd9692c2ee640fa7 [2024-10-14 19:50:38,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:50:38,228 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:50:38,229 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:50:38,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:50:38,235 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:50:38,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a2c73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38, skipping insertion in model container [2024-10-14 19:50:38,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,272 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:50:38,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:50:38,446 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:50:38,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:50:38,495 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:50:38,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38 WrapperNode [2024-10-14 19:50:38,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:50:38,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:50:38,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:50:38,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:50:38,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,545 INFO L138 Inliner]: procedures = 20, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 148 [2024-10-14 19:50:38,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:50:38,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:50:38,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:50:38,547 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:50:38,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,569 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,587 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]. [2024-10-14 19:50:38,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,591 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,603 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:50:38,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:50:38,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:50:38,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:50:38,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (1/1) ... [2024-10-14 19:50:38,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:50:38,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:38,642 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) [2024-10-14 19:50:38,644 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 [2024-10-14 19:50:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:50:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:50:38,681 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:50:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:50:38,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:50:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:50:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:50:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:50:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:50:38,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:50:38,684 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:50:38,763 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:50:38,765 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:50:38,979 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:50:38,979 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:50:39,196 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:50:39,197 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 19:50:39,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:50:39 BoogieIcfgContainer [2024-10-14 19:50:39,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:50:39,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:50:39,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:50:39,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:50:39,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:50:38" (1/3) ... [2024-10-14 19:50:39,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468c28e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:50:39, skipping insertion in model container [2024-10-14 19:50:39,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:38" (2/3) ... [2024-10-14 19:50:39,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468c28e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:50:39, skipping insertion in model container [2024-10-14 19:50:39,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:50:39" (3/3) ... [2024-10-14 19:50:39,208 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2024-10-14 19:50:39,225 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:50:39,225 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:50:39,226 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:50:39,318 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 19:50:39,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 36 transitions, 86 flow [2024-10-14 19:50:39,407 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2024-10-14 19:50:39,407 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:50:39,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 0/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-14 19:50:39,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 36 transitions, 86 flow [2024-10-14 19:50:39,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 33 transitions, 78 flow [2024-10-14 19:50:39,424 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:50:39,434 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;@490f3c30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:50:39,435 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 19:50:39,452 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:50:39,453 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-10-14 19:50:39,453 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:50:39,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:39,454 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] [2024-10-14 19:50:39,454 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)] === [2024-10-14 19:50:39,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:39,459 INFO L85 PathProgramCache]: Analyzing trace with hash 464450169, now seen corresponding path program 1 times [2024-10-14 19:50:39,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:39,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200090021] [2024-10-14 19:50:39,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:39,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:40,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:40,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200090021] [2024-10-14 19:50:40,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200090021] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:40,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:40,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:50:40,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346520720] [2024-10-14 19:50:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:40,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:50:40,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:40,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:50:40,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:50:40,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-10-14 19:50:40,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-14 19:50:40,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:40,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-10-14 19:50:40,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:40,428 INFO L124 PetriNetUnfolderBase]: 162/387 cut-off events. [2024-10-14 19:50:40,428 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-10-14 19:50:40,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 387 events. 162/387 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1839 event pairs, 56 based on Foata normal form. 4/379 useless extension candidates. Maximal degree in co-relation 658. Up to 98 conditions per place. [2024-10-14 19:50:40,434 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 41 selfloop transitions, 7 changer transitions 15/74 dead transitions. [2024-10-14 19:50:40,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 313 flow [2024-10-14 19:50:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:50:40,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:50:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-10-14 19:50:40,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6215277777777778 [2024-10-14 19:50:40,463 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 78 flow. Second operand 8 states and 179 transitions. [2024-10-14 19:50:40,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 313 flow [2024-10-14 19:50:40,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 74 transitions, 287 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:50:40,471 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 104 flow [2024-10-14 19:50:40,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-10-14 19:50:40,478 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-10-14 19:50:40,478 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 104 flow [2024-10-14 19:50:40,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-14 19:50:40,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:40,479 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] [2024-10-14 19:50:40,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:50:40,479 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)] === [2024-10-14 19:50:40,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:40,480 INFO L85 PathProgramCache]: Analyzing trace with hash 942559215, now seen corresponding path program 2 times [2024-10-14 19:50:40,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:40,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694544057] [2024-10-14 19:50:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:40,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:40,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:40,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694544057] [2024-10-14 19:50:40,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694544057] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:40,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:40,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:50:40,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621977682] [2024-10-14 19:50:40,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:40,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:50:40,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:40,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:50:40,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:50:40,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-10-14 19:50:40,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-14 19:50:40,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:40,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-10-14 19:50:40,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:40,993 INFO L124 PetriNetUnfolderBase]: 197/459 cut-off events. [2024-10-14 19:50:40,993 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-14 19:50:40,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 459 events. 197/459 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2117 event pairs, 47 based on Foata normal form. 6/453 useless extension candidates. Maximal degree in co-relation 905. Up to 296 conditions per place. [2024-10-14 19:50:40,997 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 23 selfloop transitions, 4 changer transitions 18/61 dead transitions. [2024-10-14 19:50:40,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 246 flow [2024-10-14 19:50:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:50:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:50:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-10-14 19:50:40,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2024-10-14 19:50:40,999 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 104 flow. Second operand 6 states and 130 transitions. [2024-10-14 19:50:40,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 246 flow [2024-10-14 19:50:41,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 244 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-14 19:50:41,001 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 131 flow [2024-10-14 19:50:41,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-10-14 19:50:41,002 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-10-14 19:50:41,002 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 131 flow [2024-10-14 19:50:41,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-14 19:50:41,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:41,003 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] [2024-10-14 19:50:41,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:50:41,003 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)] === [2024-10-14 19:50:41,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:41,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1985171043, now seen corresponding path program 3 times [2024-10-14 19:50:41,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:41,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773453802] [2024-10-14 19:50:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:41,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:41,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:41,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:41,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773453802] [2024-10-14 19:50:41,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773453802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:41,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:41,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:50:41,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52465169] [2024-10-14 19:50:41,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:41,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:50:41,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:41,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:50:41,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:50:41,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 36 [2024-10-14 19:50:41,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-10-14 19:50:41,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:41,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 36 [2024-10-14 19:50:41,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:41,158 INFO L124 PetriNetUnfolderBase]: 87/263 cut-off events. [2024-10-14 19:50:41,158 INFO L125 PetriNetUnfolderBase]: For 73/75 co-relation queries the response was YES. [2024-10-14 19:50:41,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 263 events. 87/263 cut-off events. For 73/75 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1217 event pairs, 66 based on Foata normal form. 6/257 useless extension candidates. Maximal degree in co-relation 424. Up to 161 conditions per place. [2024-10-14 19:50:41,161 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 20 selfloop transitions, 2 changer transitions 2/42 dead transitions. [2024-10-14 19:50:41,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 193 flow [2024-10-14 19:50:41,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:50:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:50:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-10-14 19:50:41,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-10-14 19:50:41,163 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 131 flow. Second operand 3 states and 70 transitions. [2024-10-14 19:50:41,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 193 flow [2024-10-14 19:50:41,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 188 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:41,168 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 134 flow [2024-10-14 19:50:41,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-10-14 19:50:41,170 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-10-14 19:50:41,170 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 134 flow [2024-10-14 19:50:41,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-10-14 19:50:41,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:41,171 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] [2024-10-14 19:50:41,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:50:41,172 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)] === [2024-10-14 19:50:41,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:41,173 INFO L85 PathProgramCache]: Analyzing trace with hash 167055083, now seen corresponding path program 4 times [2024-10-14 19:50:41,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:41,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683823408] [2024-10-14 19:50:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:41,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:41,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:41,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683823408] [2024-10-14 19:50:41,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683823408] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:41,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:41,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:50:41,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693759032] [2024-10-14 19:50:41,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:41,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:50:41,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:41,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:50:41,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:50:41,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-10-14 19:50:41,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-14 19:50:41,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:41,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-10-14 19:50:41,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:41,675 INFO L124 PetriNetUnfolderBase]: 306/772 cut-off events. [2024-10-14 19:50:41,676 INFO L125 PetriNetUnfolderBase]: For 282/283 co-relation queries the response was YES. [2024-10-14 19:50:41,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1795 conditions, 772 events. 306/772 cut-off events. For 282/283 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4359 event pairs, 83 based on Foata normal form. 3/757 useless extension candidates. Maximal degree in co-relation 572. Up to 231 conditions per place. [2024-10-14 19:50:41,681 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 44 selfloop transitions, 13 changer transitions 3/76 dead transitions. [2024-10-14 19:50:41,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 357 flow [2024-10-14 19:50:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:50:41,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:50:41,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-10-14 19:50:41,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2024-10-14 19:50:41,683 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 134 flow. Second operand 7 states and 158 transitions. [2024-10-14 19:50:41,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 357 flow [2024-10-14 19:50:41,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 76 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:41,689 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 214 flow [2024-10-14 19:50:41,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-10-14 19:50:41,690 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2024-10-14 19:50:41,691 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 214 flow [2024-10-14 19:50:41,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-14 19:50:41,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:41,692 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] [2024-10-14 19:50:41,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 19:50:41,693 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:41,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:41,693 INFO L85 PathProgramCache]: Analyzing trace with hash 977120181, now seen corresponding path program 5 times [2024-10-14 19:50:41,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:41,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208843782] [2024-10-14 19:50:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:41,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:41,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:41,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208843782] [2024-10-14 19:50:41,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208843782] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:41,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:41,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:50:41,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056898335] [2024-10-14 19:50:41,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:41,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:50:41,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:41,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:50:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:50:41,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 36 [2024-10-14 19:50:41,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-10-14 19:50:41,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:41,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 36 [2024-10-14 19:50:41,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:41,863 INFO L124 PetriNetUnfolderBase]: 231/685 cut-off events. [2024-10-14 19:50:41,863 INFO L125 PetriNetUnfolderBase]: For 466/473 co-relation queries the response was YES. [2024-10-14 19:50:41,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 685 events. 231/685 cut-off events. For 466/473 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4118 event pairs, 170 based on Foata normal form. 12/669 useless extension candidates. Maximal degree in co-relation 689. Up to 375 conditions per place. [2024-10-14 19:50:41,869 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 28 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-10-14 19:50:41,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 303 flow [2024-10-14 19:50:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:50:41,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:50:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-10-14 19:50:41,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-10-14 19:50:41,871 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 214 flow. Second operand 3 states and 73 transitions. [2024-10-14 19:50:41,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 303 flow [2024-10-14 19:50:41,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 293 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-10-14 19:50:41,880 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 212 flow [2024-10-14 19:50:41,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-10-14 19:50:41,881 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2024-10-14 19:50:41,883 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 212 flow [2024-10-14 19:50:41,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-10-14 19:50:41,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:41,883 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] [2024-10-14 19:50:41,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 19:50:41,884 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:41,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:41,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1427002289, now seen corresponding path program 6 times [2024-10-14 19:50:41,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:41,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932930040] [2024-10-14 19:50:41,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:41,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:41,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:41,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932930040] [2024-10-14 19:50:41,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932930040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:41,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:41,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:50:41,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071976703] [2024-10-14 19:50:41,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:41,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:50:41,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:41,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:50:41,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:50:42,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-10-14 19:50:42,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-14 19:50:42,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:42,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-10-14 19:50:42,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:42,237 INFO L124 PetriNetUnfolderBase]: 352/815 cut-off events. [2024-10-14 19:50:42,238 INFO L125 PetriNetUnfolderBase]: For 535/538 co-relation queries the response was YES. [2024-10-14 19:50:42,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 815 events. 352/815 cut-off events. For 535/538 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4523 event pairs, 107 based on Foata normal form. 6/793 useless extension candidates. Maximal degree in co-relation 1232. Up to 195 conditions per place. [2024-10-14 19:50:42,243 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 33 selfloop transitions, 6 changer transitions 24/80 dead transitions. [2024-10-14 19:50:42,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 80 transitions, 438 flow [2024-10-14 19:50:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:50:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:50:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-10-14 19:50:42,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5798611111111112 [2024-10-14 19:50:42,244 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 212 flow. Second operand 8 states and 167 transitions. [2024-10-14 19:50:42,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 80 transitions, 438 flow [2024-10-14 19:50:42,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:42,249 INFO L231 Difference]: Finished difference. Result has 65 places, 43 transitions, 198 flow [2024-10-14 19:50:42,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=198, PETRI_PLACES=65, PETRI_TRANSITIONS=43} [2024-10-14 19:50:42,250 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 25 predicate places. [2024-10-14 19:50:42,250 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions, 198 flow [2024-10-14 19:50:42,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-14 19:50:42,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:42,250 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] [2024-10-14 19:50:42,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 19:50:42,251 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:42,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:42,251 INFO L85 PathProgramCache]: Analyzing trace with hash 662465097, now seen corresponding path program 7 times [2024-10-14 19:50:42,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:42,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910982942] [2024-10-14 19:50:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:42,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:42,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:42,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910982942] [2024-10-14 19:50:42,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910982942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:42,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:42,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:50:42,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591807735] [2024-10-14 19:50:42,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:42,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:50:42,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:42,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:50:42,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:50:42,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-10-14 19:50:42,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 43 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-14 19:50:42,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:42,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-10-14 19:50:42,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:42,575 INFO L124 PetriNetUnfolderBase]: 160/441 cut-off events. [2024-10-14 19:50:42,575 INFO L125 PetriNetUnfolderBase]: For 334/337 co-relation queries the response was YES. [2024-10-14 19:50:42,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1212 conditions, 441 events. 160/441 cut-off events. For 334/337 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2060 event pairs, 47 based on Foata normal form. 3/438 useless extension candidates. Maximal degree in co-relation 1172. Up to 129 conditions per place. [2024-10-14 19:50:42,578 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 39 selfloop transitions, 6 changer transitions 11/69 dead transitions. [2024-10-14 19:50:42,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 390 flow [2024-10-14 19:50:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:50:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:50:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-10-14 19:50:42,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6150793650793651 [2024-10-14 19:50:42,580 INFO L175 Difference]: Start difference. First operand has 65 places, 43 transitions, 198 flow. Second operand 7 states and 155 transitions. [2024-10-14 19:50:42,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 390 flow [2024-10-14 19:50:42,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 344 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-10-14 19:50:42,584 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 146 flow [2024-10-14 19:50:42,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=146, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2024-10-14 19:50:42,585 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-10-14 19:50:42,586 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 146 flow [2024-10-14 19:50:42,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-14 19:50:42,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:42,586 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] [2024-10-14 19:50:42,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 19:50:42,586 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:42,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash 853223655, now seen corresponding path program 8 times [2024-10-14 19:50:42,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:42,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189002417] [2024-10-14 19:50:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:42,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:42,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:42,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:42,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189002417] [2024-10-14 19:50:42,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189002417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:42,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:42,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:50:42,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640337942] [2024-10-14 19:50:42,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:42,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:50:42,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:42,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:50:42,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:50:42,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-10-14 19:50:42,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-14 19:50:42,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:42,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-10-14 19:50:42,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:42,859 INFO L124 PetriNetUnfolderBase]: 89/256 cut-off events. [2024-10-14 19:50:42,859 INFO L125 PetriNetUnfolderBase]: For 130/134 co-relation queries the response was YES. [2024-10-14 19:50:42,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 256 events. 89/256 cut-off events. For 130/134 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 968 event pairs, 29 based on Foata normal form. 10/260 useless extension candidates. Maximal degree in co-relation 484. Up to 64 conditions per place. [2024-10-14 19:50:42,861 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 27 selfloop transitions, 8 changer transitions 5/53 dead transitions. [2024-10-14 19:50:42,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 264 flow [2024-10-14 19:50:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:50:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:50:42,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-10-14 19:50:42,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-10-14 19:50:42,862 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 146 flow. Second operand 6 states and 125 transitions. [2024-10-14 19:50:42,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 264 flow [2024-10-14 19:50:42,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 241 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-10-14 19:50:42,864 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 135 flow [2024-10-14 19:50:42,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2024-10-14 19:50:42,866 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-10-14 19:50:42,866 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 135 flow [2024-10-14 19:50:42,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-14 19:50:42,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:42,866 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] [2024-10-14 19:50:42,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 19:50:42,866 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:42,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:42,867 INFO L85 PathProgramCache]: Analyzing trace with hash 165659515, now seen corresponding path program 9 times [2024-10-14 19:50:42,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:42,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068237712] [2024-10-14 19:50:42,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:42,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:43,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:43,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068237712] [2024-10-14 19:50:43,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068237712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:43,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:43,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:43,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985088643] [2024-10-14 19:50:43,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:43,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:50:43,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:50:43,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:50:43,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-10-14 19:50:43,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-10-14 19:50:43,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:43,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-10-14 19:50:43,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:43,094 INFO L124 PetriNetUnfolderBase]: 21/68 cut-off events. [2024-10-14 19:50:43,095 INFO L125 PetriNetUnfolderBase]: For 50/54 co-relation queries the response was YES. [2024-10-14 19:50:43,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 68 events. 21/68 cut-off events. For 50/54 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 173 event pairs, 1 based on Foata normal form. 6/71 useless extension candidates. Maximal degree in co-relation 78. Up to 26 conditions per place. [2024-10-14 19:50:43,096 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2024-10-14 19:50:43,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 24 transitions, 117 flow [2024-10-14 19:50:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:50:43,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:50:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-10-14 19:50:43,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-10-14 19:50:43,097 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 135 flow. Second operand 6 states and 102 transitions. [2024-10-14 19:50:43,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 24 transitions, 117 flow [2024-10-14 19:50:43,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 104 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-10-14 19:50:43,098 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2024-10-14 19:50:43,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2024-10-14 19:50:43,099 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -7 predicate places. [2024-10-14 19:50:43,100 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2024-10-14 19:50:43,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-10-14 19:50:43,103 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-10-14 19:50:43,103 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-10-14 19:50:43,103 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-14 19:50:43,104 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-14 19:50:43,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 19:50:43,104 INFO L407 BasicCegarLoop]: Path program histogram: [9] [2024-10-14 19:50:43,108 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 19:50:43,108 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 19:50:43,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 07:50:43 BasicIcfg [2024-10-14 19:50:43,114 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 19:50:43,114 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 19:50:43,114 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 19:50:43,114 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 19:50:43,115 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:50:39" (3/4) ... [2024-10-14 19:50:43,119 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 19:50:43,123 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-14 19:50:43,123 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-14 19:50:43,128 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 76 nodes and edges [2024-10-14 19:50:43,128 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-10-14 19:50:43,129 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-14 19:50:43,129 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 19:50:43,206 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 19:50:43,207 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 19:50:43,207 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 19:50:43,207 INFO L158 Benchmark]: Toolchain (without parser) took 4979.23ms. Allocated memory was 169.9MB in the beginning and 207.6MB in the end (delta: 37.7MB). Free memory was 138.2MB in the beginning and 107.4MB in the end (delta: 30.9MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2024-10-14 19:50:43,207 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:50:43,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.63ms. Allocated memory is still 169.9MB. Free memory was 138.0MB in the beginning and 129.8MB in the end (delta: 8.3MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2024-10-14 19:50:43,208 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.48ms. Allocated memory is still 169.9MB. Free memory was 129.1MB in the beginning and 127.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 19:50:43,208 INFO L158 Benchmark]: Boogie Preprocessor took 61.78ms. Allocated memory is still 169.9MB. Free memory was 127.7MB in the beginning and 125.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 19:50:43,208 INFO L158 Benchmark]: RCFGBuilder took 588.66ms. Allocated memory is still 169.9MB. Free memory was 125.5MB in the beginning and 85.7MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-10-14 19:50:43,209 INFO L158 Benchmark]: TraceAbstraction took 3913.36ms. Allocated memory was 169.9MB in the beginning and 207.6MB in the end (delta: 37.7MB). Free memory was 85.1MB in the beginning and 112.6MB in the end (delta: -27.5MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2024-10-14 19:50:43,209 INFO L158 Benchmark]: Witness Printer took 92.53ms. Allocated memory is still 207.6MB. Free memory was 111.6MB in the beginning and 107.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 19:50:43,211 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.63ms. Allocated memory is still 169.9MB. Free memory was 138.0MB in the beginning and 129.8MB in the end (delta: 8.3MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.48ms. Allocated memory is still 169.9MB. Free memory was 129.1MB in the beginning and 127.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.78ms. Allocated memory is still 169.9MB. Free memory was 127.7MB in the beginning and 125.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 588.66ms. Allocated memory is still 169.9MB. Free memory was 125.5MB in the beginning and 85.7MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3913.36ms. Allocated memory was 169.9MB in the beginning and 207.6MB in the end (delta: 37.7MB). Free memory was 85.1MB in the beginning and 112.6MB in the end (delta: -27.5MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * Witness Printer took 92.53ms. Allocated memory is still 207.6MB. Free memory was 111.6MB in the beginning and 107.4MB 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: 109]: 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, 63 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: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 213 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 202 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1126 IncrementalHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 17 mSDtfsCounter, 1126 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=4, InterpolantAutomatonStates: 54, 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, 1.6s InterpolantComputationTime, 279 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 270 ConstructedInterpolants, 0 QuantifiedInterpolants, 986 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2024-10-14 19:50:43,234 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