./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/40_barrier_vf-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d 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/pthread-ext/40_barrier_vf-pthread.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 828cbbb8bb1b7fb83d1c4d35071bdac7e1b4ae65dfc83ebb19446976ecd8d980 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:12:14,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:12:14,456 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:12:14,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:12:14,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:12:14,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:12:14,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:12:14,494 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:12:14,495 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:12:14,496 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:12:14,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:12:14,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:12:14,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:12:14,498 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:12:14,500 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:12:14,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:12:14,501 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:12:14,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:12:14,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:12:14,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:12:14,502 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:12:14,506 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:12:14,506 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:12:14,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:12:14,507 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:12:14,507 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:12:14,508 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:12:14,508 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:12:14,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:12:14,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:12:14,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:12:14,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:12:14,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:12:14,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:12:14,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:12:14,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:12:14,511 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:12:14,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:12:14,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:12:14,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:12:14,512 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:12:14,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:12:14,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 828cbbb8bb1b7fb83d1c4d35071bdac7e1b4ae65dfc83ebb19446976ecd8d980 [2024-10-13 12:12:14,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:12:14,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:12:14,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:12:14,819 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:12:14,819 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:12:14,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/40_barrier_vf-pthread.i [2024-10-13 12:12:16,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:12:16,649 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:12:16,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/40_barrier_vf-pthread.i [2024-10-13 12:12:16,672 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1341c6837/134d950af11744099bed2ca0435996c0/FLAG6fd6bd179 [2024-10-13 12:12:16,977 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1341c6837/134d950af11744099bed2ca0435996c0 [2024-10-13 12:12:16,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:12:16,980 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:12:16,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:12:16,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:12:16,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:12:16,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:12:16" (1/1) ... [2024-10-13 12:12:16,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16483667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:16, skipping insertion in model container [2024-10-13 12:12:16,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:12:16" (1/1) ... [2024-10-13 12:12:17,041 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:12:17,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:12:17,496 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:12:17,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:12:17,634 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:12:17,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17 WrapperNode [2024-10-13 12:12:17,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:12:17,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:12:17,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:12:17,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:12:17,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (1/1) ... [2024-10-13 12:12:17,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (1/1) ... [2024-10-13 12:12:17,687 INFO L138 Inliner]: procedures = 164, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2024-10-13 12:12:17,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:12:17,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:12:17,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:12:17,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:12:17,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (1/1) ... [2024-10-13 12:12:17,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (1/1) ... [2024-10-13 12:12:17,703 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (1/1) ... [2024-10-13 12:12:17,726 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-10-13 12:12:17,726 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (1/1) ... [2024-10-13 12:12:17,727 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (1/1) ... [2024-10-13 12:12:17,732 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (1/1) ... [2024-10-13 12:12:17,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (1/1) ... [2024-10-13 12:12:17,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (1/1) ... [2024-10-13 12:12:17,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (1/1) ... [2024-10-13 12:12:17,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:12:17,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:12:17,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:12:17,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:12:17,742 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (1/1) ... [2024-10-13 12:12:17,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:12:17,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:12:17,773 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) [2024-10-13 12:12:17,775 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 [2024-10-13 12:12:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-13 12:12:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-13 12:12:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 12:12:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:12:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:12:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 12:12:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 12:12:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:12:17,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:12:17,817 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:12:17,948 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:12:17,950 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:12:18,086 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:12:18,086 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:12:18,257 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:12:18,257 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 12:12:18,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:12:18 BoogieIcfgContainer [2024-10-13 12:12:18,258 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:12:18,263 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:12:18,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:12:18,267 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:12:18,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:12:16" (1/3) ... [2024-10-13 12:12:18,269 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6f9164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:12:18, skipping insertion in model container [2024-10-13 12:12:18,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:12:17" (2/3) ... [2024-10-13 12:12:18,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6f9164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:12:18, skipping insertion in model container [2024-10-13 12:12:18,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:12:18" (3/3) ... [2024-10-13 12:12:18,273 INFO L112 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf-pthread.i [2024-10-13 12:12:18,289 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:12:18,289 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:12:18,289 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:12:18,326 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:12:18,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 27 transitions, 58 flow [2024-10-13 12:12:18,386 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-10-13 12:12:18,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:12:18,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 31 events. 4/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-10-13 12:12:18,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 27 transitions, 58 flow [2024-10-13 12:12:18,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 27 transitions, 58 flow [2024-10-13 12:12:18,412 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:12:18,424 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;@1fc7bcad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:12:18,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 12:12:18,435 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:12:18,435 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:12:18,435 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:12:18,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:12:18,440 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:12:18,441 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:12:18,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:12:18,453 INFO L85 PathProgramCache]: Analyzing trace with hash 241943, now seen corresponding path program 1 times [2024-10-13 12:12:18,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:12:18,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736260881] [2024-10-13 12:12:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:12:18,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:12:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:12:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:12:18,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:12:18,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736260881] [2024-10-13 12:12:18,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736260881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:12:18,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:12:18,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:12:18,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988940593] [2024-10-13 12:12:18,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:12:18,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 12:12:18,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:12:18,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 12:12:18,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 12:12:18,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-10-13 12:12:18,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 27 transitions, 58 flow. Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-10-13 12:12:18,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:12:18,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-10-13 12:12:18,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:12:18,743 INFO L124 PetriNetUnfolderBase]: 20/63 cut-off events. [2024-10-13 12:12:18,743 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:12:18,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 63 events. 20/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 14 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 101. Up to 47 conditions per place. [2024-10-13 12:12:18,748 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 13 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2024-10-13 12:12:18,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 68 flow [2024-10-13 12:12:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 12:12:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 12:12:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 31 transitions. [2024-10-13 12:12:18,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-10-13 12:12:18,764 INFO L175 Difference]: Start difference. First operand has 26 places, 27 transitions, 58 flow. Second operand 2 states and 31 transitions. [2024-10-13 12:12:18,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 68 flow [2024-10-13 12:12:18,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:12:18,769 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2024-10-13 12:12:18,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, 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=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2024-10-13 12:12:18,776 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -5 predicate places. [2024-10-13 12:12:18,777 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2024-10-13 12:12:18,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-10-13 12:12:18,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:12:18,777 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 12:12:18,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:12:18,778 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:12:18,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:12:18,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1381878399, now seen corresponding path program 1 times [2024-10-13 12:12:18,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:12:18,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560577731] [2024-10-13 12:12:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:12:18,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:12:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:12:18,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 12:12:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:12:18,866 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 12:12:18,866 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 12:12:18,868 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-10-13 12:12:18,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-10-13 12:12:18,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-10-13 12:12:18,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-10-13 12:12:18,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:12:18,872 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 12:12:18,875 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 12:12:18,876 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 12:12:18,902 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:12:18,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 47 transitions, 104 flow [2024-10-13 12:12:18,916 INFO L124 PetriNetUnfolderBase]: 8/56 cut-off events. [2024-10-13 12:12:18,917 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:12:18,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 56 events. 8/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 134 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2024-10-13 12:12:18,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 47 transitions, 104 flow [2024-10-13 12:12:18,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 47 transitions, 104 flow [2024-10-13 12:12:18,925 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:12:18,927 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;@1fc7bcad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:12:18,927 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-13 12:12:18,931 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:12:18,933 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:12:18,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:12:18,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:12:18,933 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:12:18,934 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:12:18,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:12:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash 288614, now seen corresponding path program 1 times [2024-10-13 12:12:18,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:12:18,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401080593] [2024-10-13 12:12:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:12:18,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:12:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:12:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:12:19,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:12:19,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401080593] [2024-10-13 12:12:19,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401080593] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:12:19,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:12:19,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:12:19,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474833504] [2024-10-13 12:12:19,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:12:19,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 12:12:19,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:12:19,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 12:12:19,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 12:12:19,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-10-13 12:12:19,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 104 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-10-13 12:12:19,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:12:19,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-10-13 12:12:19,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:12:19,227 INFO L124 PetriNetUnfolderBase]: 471/929 cut-off events. [2024-10-13 12:12:19,228 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-10-13 12:12:19,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 929 events. 471/929 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4663 event pairs, 330 based on Foata normal form. 159/1070 useless extension candidates. Maximal degree in co-relation 1221. Up to 717 conditions per place. [2024-10-13 12:12:19,244 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 23 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-10-13 12:12:19,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 124 flow [2024-10-13 12:12:19,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 12:12:19,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 12:12:19,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-10-13 12:12:19,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-10-13 12:12:19,250 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 104 flow. Second operand 2 states and 54 transitions. [2024-10-13 12:12:19,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 124 flow [2024-10-13 12:12:19,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:12:19,251 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 78 flow [2024-10-13 12:12:19,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2024-10-13 12:12:19,254 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2024-10-13 12:12:19,254 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 78 flow [2024-10-13 12:12:19,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-10-13 12:12:19,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:12:19,255 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-13 12:12:19,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:12:19,255 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:12:19,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:12:19,256 INFO L85 PathProgramCache]: Analyzing trace with hash 815802811, now seen corresponding path program 1 times [2024-10-13 12:12:19,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:12:19,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564023174] [2024-10-13 12:12:19,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:12:19,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:12:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:12:19,289 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 12:12:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:12:19,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 12:12:19,305 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 12:12:19,305 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-13 12:12:19,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-10-13 12:12:19,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-10-13 12:12:19,306 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-10-13 12:12:19,307 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-10-13 12:12:19,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:12:19,307 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 12:12:19,308 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 12:12:19,308 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 12:12:19,337 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:12:19,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 67 transitions, 152 flow [2024-10-13 12:12:19,348 INFO L124 PetriNetUnfolderBase]: 12/81 cut-off events. [2024-10-13 12:12:19,348 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 12:12:19,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 12/81 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2024-10-13 12:12:19,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 67 transitions, 152 flow [2024-10-13 12:12:19,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 67 transitions, 152 flow [2024-10-13 12:12:19,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:12:19,354 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;@1fc7bcad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:12:19,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-13 12:12:19,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:12:19,357 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:12:19,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:12:19,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:12:19,358 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:12:19,358 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:12:19,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:12:19,359 INFO L85 PathProgramCache]: Analyzing trace with hash 355145, now seen corresponding path program 1 times [2024-10-13 12:12:19,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:12:19,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636589509] [2024-10-13 12:12:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:12:19,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:12:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:12:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:12:19,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:12:19,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636589509] [2024-10-13 12:12:19,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636589509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:12:19,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:12:19,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:12:19,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047339001] [2024-10-13 12:12:19,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:12:19,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 12:12:19,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:12:19,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 12:12:19,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 12:12:19,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 67 [2024-10-13 12:12:19,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 152 flow. Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2024-10-13 12:12:19,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:12:19,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 67 [2024-10-13 12:12:19,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:12:20,639 INFO L124 PetriNetUnfolderBase]: 6962/11245 cut-off events. [2024-10-13 12:12:20,641 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-10-13 12:12:20,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20752 conditions, 11245 events. 6962/11245 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 73207 event pairs, 4937 based on Foata normal form. 2112/13177 useless extension candidates. Maximal degree in co-relation 3523. Up to 9185 conditions per place. [2024-10-13 12:12:20,734 INFO L140 encePairwiseOnDemand]: 57/67 looper letters, 33 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2024-10-13 12:12:20,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 182 flow [2024-10-13 12:12:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 12:12:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 12:12:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 77 transitions. [2024-10-13 12:12:20,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5746268656716418 [2024-10-13 12:12:20,738 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 152 flow. Second operand 2 states and 77 transitions. [2024-10-13 12:12:20,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 182 flow [2024-10-13 12:12:20,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 180 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-13 12:12:20,742 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 114 flow [2024-10-13 12:12:20,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-10-13 12:12:20,744 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2024-10-13 12:12:20,744 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 114 flow [2024-10-13 12:12:20,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2024-10-13 12:12:20,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:12:20,745 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-13 12:12:20,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:12:20,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:12:20,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:12:20,746 INFO L85 PathProgramCache]: Analyzing trace with hash -474004256, now seen corresponding path program 1 times [2024-10-13 12:12:20,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:12:20,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931440859] [2024-10-13 12:12:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:12:20,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:12:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:12:20,777 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 12:12:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:12:20,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 12:12:20,811 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 12:12:20,811 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-10-13 12:12:20,811 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-13 12:12:20,812 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-13 12:12:20,812 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-10-13 12:12:20,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-10-13 12:12:20,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-10-13 12:12:20,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 12:12:20,816 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 12:12:20,816 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 12:12:20,816 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-13 12:12:20,856 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:12:20,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 87 transitions, 202 flow [2024-10-13 12:12:20,870 INFO L124 PetriNetUnfolderBase]: 16/106 cut-off events. [2024-10-13 12:12:20,872 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 12:12:20,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 106 events. 16/106 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 318 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 93. Up to 5 conditions per place. [2024-10-13 12:12:20,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 87 transitions, 202 flow [2024-10-13 12:12:20,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 87 transitions, 202 flow [2024-10-13 12:12:20,878 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:12:20,879 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;@1fc7bcad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:12:20,882 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 12:12:20,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:12:20,884 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:12:20,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:12:20,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:12:20,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:12:20,884 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 12:12:20,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:12:20,885 INFO L85 PathProgramCache]: Analyzing trace with hash 441536, now seen corresponding path program 1 times [2024-10-13 12:12:20,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:12:20,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152154679] [2024-10-13 12:12:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:12:20,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:12:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:12:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:12:20,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:12:20,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152154679] [2024-10-13 12:12:20,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152154679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:12:20,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:12:20,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:12:20,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987077243] [2024-10-13 12:12:20,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:12:20,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 12:12:20,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:12:20,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 12:12:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 12:12:20,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-10-13 12:12:20,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 87 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-10-13 12:12:20,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:12:20,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-10-13 12:12:20,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:12:30,395 INFO L124 PetriNetUnfolderBase]: 87130/125844 cut-off events. [2024-10-13 12:12:30,395 INFO L125 PetriNetUnfolderBase]: For 8089/8089 co-relation queries the response was YES. [2024-10-13 12:12:30,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236608 conditions, 125844 events. 87130/125844 cut-off events. For 8089/8089 co-relation queries the response was YES. Maximal size of possible extension queue 3978. Compared 931509 event pairs, 62218 based on Foata normal form. 25604/149815 useless extension candidates. Maximal degree in co-relation 20829. Up to 107146 conditions per place. [2024-10-13 12:12:31,795 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 43 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-10-13 12:12:31,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 242 flow [2024-10-13 12:12:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 12:12:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 12:12:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 100 transitions. [2024-10-13 12:12:31,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-10-13 12:12:31,799 INFO L175 Difference]: Start difference. First operand has 80 places, 87 transitions, 202 flow. Second operand 2 states and 100 transitions. [2024-10-13 12:12:31,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 242 flow [2024-10-13 12:12:31,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 236 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-13 12:12:31,816 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 150 flow [2024-10-13 12:12:31,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-10-13 12:12:31,817 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, -14 predicate places. [2024-10-13 12:12:31,819 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 150 flow [2024-10-13 12:12:31,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-10-13 12:12:31,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:12:31,819 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:12:31,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 12:12:31,820 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 12:12:31,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:12:31,820 INFO L85 PathProgramCache]: Analyzing trace with hash -186622825, now seen corresponding path program 1 times [2024-10-13 12:12:31,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:12:31,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845921663] [2024-10-13 12:12:31,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:12:31,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:12:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:12:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:12:31,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:12:31,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845921663] [2024-10-13 12:12:31,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845921663] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:12:31,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:12:31,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:12:31,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155480402] [2024-10-13 12:12:31,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:12:31,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:12:31,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:12:31,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:12:31,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:12:32,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-10-13 12:12:32,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-10-13 12:12:32,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:12:32,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-10-13 12:12:32,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:12:49,958 INFO L124 PetriNetUnfolderBase]: 184809/277386 cut-off events. [2024-10-13 12:12:49,959 INFO L125 PetriNetUnfolderBase]: For 4843/4843 co-relation queries the response was YES. [2024-10-13 12:12:50,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511691 conditions, 277386 events. 184809/277386 cut-off events. For 4843/4843 co-relation queries the response was YES. Maximal size of possible extension queue 12031. Compared 2515132 event pairs, 49795 based on Foata normal form. 12267/288102 useless extension candidates. Maximal degree in co-relation 511684. Up to 83388 conditions per place. [2024-10-13 12:12:52,559 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 103 selfloop transitions, 13 changer transitions 0/137 dead transitions. [2024-10-13 12:12:52,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 137 transitions, 553 flow [2024-10-13 12:12:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:12:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:12:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-10-13 12:12:52,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2024-10-13 12:12:52,565 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 150 flow. Second operand 4 states and 212 transitions. [2024-10-13 12:12:52,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 137 transitions, 553 flow [2024-10-13 12:12:52,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 137 transitions, 553 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:12:52,578 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 200 flow [2024-10-13 12:12:52,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2024-10-13 12:12:52,580 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, -11 predicate places. [2024-10-13 12:12:52,580 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 200 flow [2024-10-13 12:12:52,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-10-13 12:12:52,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:12:52,581 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:12:52,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 12:12:52,581 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 12:12:52,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:12:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1886555301, now seen corresponding path program 1 times [2024-10-13 12:12:52,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:12:52,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825389349] [2024-10-13 12:12:52,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:12:52,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:12:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:12:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:12:52,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:12:52,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825389349] [2024-10-13 12:12:52,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825389349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:12:52,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:12:52,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:12:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475597408] [2024-10-13 12:12:52,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:12:52,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:12:52,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:12:52,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:12:52,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:12:52,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-10-13 12:12:52,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-10-13 12:12:52,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:12:52,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-10-13 12:12:52,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:13:03,788 INFO L124 PetriNetUnfolderBase]: 124939/191400 cut-off events. [2024-10-13 12:13:03,788 INFO L125 PetriNetUnfolderBase]: For 11906/11906 co-relation queries the response was YES. [2024-10-13 12:13:04,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364088 conditions, 191400 events. 124939/191400 cut-off events. For 11906/11906 co-relation queries the response was YES. Maximal size of possible extension queue 8148. Compared 1729402 event pairs, 36811 based on Foata normal form. 4062/194154 useless extension candidates. Maximal degree in co-relation 364080. Up to 140026 conditions per place. [2024-10-13 12:13:05,228 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 78 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2024-10-13 12:13:05,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 104 transitions, 464 flow [2024-10-13 12:13:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:13:05,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:13:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-10-13 12:13:05,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2024-10-13 12:13:05,230 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 200 flow. Second operand 3 states and 141 transitions. [2024-10-13 12:13:05,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 104 transitions, 464 flow [2024-10-13 12:13:05,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 104 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:13:05,239 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 247 flow [2024-10-13 12:13:05,239 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2024-10-13 12:13:05,240 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, -8 predicate places. [2024-10-13 12:13:05,240 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 247 flow [2024-10-13 12:13:05,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-10-13 12:13:05,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:13:05,240 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-10-13 12:13:05,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 12:13:05,241 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 12:13:05,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:13:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash -864643718, now seen corresponding path program 1 times [2024-10-13 12:13:05,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:13:05,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930142824] [2024-10-13 12:13:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:13:05,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:13:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:13:05,253 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 12:13:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:13:05,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 12:13:05,263 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 12:13:05,264 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-13 12:13:05,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-10-13 12:13:05,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-10-13 12:13:05,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-10-13 12:13:05,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-10-13 12:13:05,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-10-13 12:13:05,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-10-13 12:13:05,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 12:13:05,265 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-13 12:13:05,266 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 12:13:05,266 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-13 12:13:05,290 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:13:05,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 107 transitions, 254 flow [2024-10-13 12:13:05,301 INFO L124 PetriNetUnfolderBase]: 20/131 cut-off events. [2024-10-13 12:13:05,301 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-13 12:13:05,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 131 events. 20/131 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 404 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 124. Up to 6 conditions per place. [2024-10-13 12:13:05,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 107 transitions, 254 flow [2024-10-13 12:13:05,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 107 transitions, 254 flow [2024-10-13 12:13:05,304 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:13:05,305 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;@1fc7bcad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:13:05,305 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-13 12:13:05,306 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:13:05,306 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-13 12:13:05,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:13:05,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:13:05,306 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:13:05,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-13 12:13:05,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:13:05,307 INFO L85 PathProgramCache]: Analyzing trace with hash 547787, now seen corresponding path program 1 times [2024-10-13 12:13:05,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:13:05,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811670533] [2024-10-13 12:13:05,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:13:05,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:13:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:13:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:13:05,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:13:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811670533] [2024-10-13 12:13:05,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811670533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:13:05,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:13:05,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:13:05,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000972594] [2024-10-13 12:13:05,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:13:05,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 12:13:05,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:13:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 12:13:05,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 12:13:05,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 107 [2024-10-13 12:13:05,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2024-10-13 12:13:05,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:13:05,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 107 [2024-10-13 12:13:05,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand