./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.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 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:23:21,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:23:21,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:23:21,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:23:21,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:23:21,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:23:21,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:23:21,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:23:21,129 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:23:21,129 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:23:21,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:23:21,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:23:21,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:23:21,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:23:21,133 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:23:21,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:23:21,134 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:23:21,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:23:21,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:23:21,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:23:21,135 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:23:21,138 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:23:21,138 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:23:21,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:23:21,139 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:23:21,139 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:23:21,139 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:23:21,140 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:23:21,140 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:23:21,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:23:21,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:23:21,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:23:21,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:23:21,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:23:21,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:23:21,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:23:21,142 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:23:21,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:23:21,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:23:21,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:23:21,143 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:23:21,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:23:21,143 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 [2024-11-19 09:23:21,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:23:21,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:23:21,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:23:21,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:23:21,415 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:23:21,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2024-11-19 09:23:22,980 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:23:23,222 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:23:23,223 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/46_monabsex2_vs.i [2024-11-19 09:23:23,246 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1be5e545/63246db779144ffcbc24edf2698555f5/FLAGf87968a8c [2024-11-19 09:23:23,260 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1be5e545/63246db779144ffcbc24edf2698555f5 [2024-11-19 09:23:23,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:23:23,265 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:23:23,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:23:23,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:23:23,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:23:23,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ecc29c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23, skipping insertion in model container [2024-11-19 09:23:23,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,320 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:23:23,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:23:23,705 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:23:23,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:23:23,850 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:23:23,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23 WrapperNode [2024-11-19 09:23:23,852 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:23:23,853 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:23:23,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:23:23,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:23:23,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,909 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,931 INFO L138 Inliner]: procedures = 168, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2024-11-19 09:23:23,931 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:23:23,932 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:23:23,932 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:23:23,932 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:23:23,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,946 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,957 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 09:23:23,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,971 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,978 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:23:23,979 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:23:23,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:23:23,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:23:23,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (1/1) ... [2024-11-19 09:23:23,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:23:24,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:23:24,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:23:24,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:23:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-19 09:23:24,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-19 09:23:24,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:23:24,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:23:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:23:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:23:24,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:23:24,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:23:24,090 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:23:24,222 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:23:24,223 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:23:24,328 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:23:24,329 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:23:24,397 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:23:24,399 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 09:23:24,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:23:24 BoogieIcfgContainer [2024-11-19 09:23:24,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:23:24,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:23:24,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:23:24,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:23:24,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:23:23" (1/3) ... [2024-11-19 09:23:24,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdab9db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:23:24, skipping insertion in model container [2024-11-19 09:23:24,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:23" (2/3) ... [2024-11-19 09:23:24,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdab9db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:23:24, skipping insertion in model container [2024-11-19 09:23:24,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:23:24" (3/3) ... [2024-11-19 09:23:24,413 INFO L112 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2024-11-19 09:23:24,433 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:23:24,433 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:23:24,433 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:23:24,476 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:23:24,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 16 places, 13 transitions, 30 flow [2024-11-19 09:23:24,539 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2024-11-19 09:23:24,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:24,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-19 09:23:24,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 16 places, 13 transitions, 30 flow [2024-11-19 09:23:24,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 13 transitions, 30 flow [2024-11-19 09:23:24,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:23:24,566 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;@583ab3bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:23:24,567 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:23:24,571 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:23:24,574 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:23:24,574 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:24,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:24,575 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:23:24,576 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)] === [2024-11-19 09:23:24,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:24,582 INFO L85 PathProgramCache]: Analyzing trace with hash 129896, now seen corresponding path program 1 times [2024-11-19 09:23:24,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:24,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527193610] [2024-11-19 09:23:24,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:24,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:24,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527193610] [2024-11-19 09:23:24,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527193610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:24,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:24,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:24,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315106728] [2024-11-19 09:23:24,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:24,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:23:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:24,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:23:24,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:23:24,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 13 [2024-11-19 09:23:24,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 13 transitions, 30 flow. Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:24,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:24,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 13 [2024-11-19 09:23:24,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:24,816 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-19 09:23:24,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:24,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 20 events. 3/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 28 event pairs, 3 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 23. Up to 14 conditions per place. [2024-11-19 09:23:24,819 INFO L140 encePairwiseOnDemand]: 12/13 looper letters, 6 selfloop transitions, 0 changer transitions 0/10 dead transitions. [2024-11-19 09:23:24,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 10 transitions, 36 flow [2024-11-19 09:23:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:23:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:23:24,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 17 transitions. [2024-11-19 09:23:24,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2024-11-19 09:23:24,833 INFO L175 Difference]: Start difference. First operand has 16 places, 13 transitions, 30 flow. Second operand 2 states and 17 transitions. [2024-11-19 09:23:24,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 10 transitions, 36 flow [2024-11-19 09:23:24,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 36 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:24,838 INFO L231 Difference]: Finished difference. Result has 14 places, 10 transitions, 24 flow [2024-11-19 09:23:24,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=24, PETRI_PLACES=14, PETRI_TRANSITIONS=10} [2024-11-19 09:23:24,848 INFO L277 CegarLoopForPetriNet]: 16 programPoint places, -2 predicate places. [2024-11-19 09:23:24,850 INFO L471 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 24 flow [2024-11-19 09:23:24,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:24,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:24,851 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-19 09:23:24,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:23:24,852 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)] === [2024-11-19 09:23:24,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:24,853 INFO L85 PathProgramCache]: Analyzing trace with hash 124814821, now seen corresponding path program 1 times [2024-11-19 09:23:24,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:24,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703426064] [2024-11-19 09:23:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:24,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:24,882 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:23:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:24,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:23:24,909 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:23:24,911 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-19 09:23:24,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-19 09:23:24,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-19 09:23:24,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-19 09:23:24,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:23:24,913 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 09:23:24,919 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:23:24,919 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 09:23:24,943 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:23:24,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 50 flow [2024-11-19 09:23:24,952 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-11-19 09:23:24,952 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:23:24,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 28 events. 0/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 71 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2024-11-19 09:23:24,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 50 flow [2024-11-19 09:23:24,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 50 flow [2024-11-19 09:23:24,955 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:23:24,956 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;@583ab3bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:23:24,956 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 09:23:24,958 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:23:24,958 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:23:24,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:24,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:24,959 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:23:24,959 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)] === [2024-11-19 09:23:24,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:24,959 INFO L85 PathProgramCache]: Analyzing trace with hash 149756, now seen corresponding path program 1 times [2024-11-19 09:23:24,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:24,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969235556] [2024-11-19 09:23:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:24,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:24,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:24,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969235556] [2024-11-19 09:23:24,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969235556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:24,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:24,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:24,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523976371] [2024-11-19 09:23:24,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:24,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:23:24,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:23:24,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:23:24,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 20 [2024-11-19 09:23:24,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 50 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:24,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:24,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 20 [2024-11-19 09:23:24,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:25,068 INFO L124 PetriNetUnfolderBase]: 39/112 cut-off events. [2024-11-19 09:23:25,069 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-19 09:23:25,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 112 events. 39/112 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 524 event pairs, 39 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 56. Up to 82 conditions per place. [2024-11-19 09:23:25,073 INFO L140 encePairwiseOnDemand]: 19/20 looper letters, 10 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2024-11-19 09:23:25,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 64 flow [2024-11-19 09:23:25,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:23:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:23:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 27 transitions. [2024-11-19 09:23:25,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-19 09:23:25,077 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 50 flow. Second operand 2 states and 27 transitions. [2024-11-19 09:23:25,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 64 flow [2024-11-19 09:23:25,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:25,079 INFO L231 Difference]: Finished difference. Result has 23 places, 17 transitions, 44 flow [2024-11-19 09:23:25,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2024-11-19 09:23:25,083 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2024-11-19 09:23:25,083 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 44 flow [2024-11-19 09:23:25,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:25,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:25,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:23:25,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:23:25,084 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:23:25,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash 143907184, now seen corresponding path program 1 times [2024-11-19 09:23:25,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:25,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686116949] [2024-11-19 09:23:25,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:25,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:25,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:25,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686116949] [2024-11-19 09:23:25,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686116949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:25,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:25,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:23:25,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098434153] [2024-11-19 09:23:25,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:25,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:25,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:25,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:25,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:25,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 20 [2024-11-19 09:23:25,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:25,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:25,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 20 [2024-11-19 09:23:25,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:25,307 INFO L124 PetriNetUnfolderBase]: 47/107 cut-off events. [2024-11-19 09:23:25,307 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-19 09:23:25,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 107 events. 47/107 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 365 event pairs, 15 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 218. Up to 77 conditions per place. [2024-11-19 09:23:25,309 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 15 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2024-11-19 09:23:25,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 97 flow [2024-11-19 09:23:25,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:25,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2024-11-19 09:23:25,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-19 09:23:25,311 INFO L175 Difference]: Start difference. First operand has 23 places, 17 transitions, 44 flow. Second operand 3 states and 38 transitions. [2024-11-19 09:23:25,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 97 flow [2024-11-19 09:23:25,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 97 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:25,315 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 65 flow [2024-11-19 09:23:25,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2024-11-19 09:23:25,316 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2024-11-19 09:23:25,318 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 65 flow [2024-11-19 09:23:25,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:25,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:25,319 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2024-11-19 09:23:25,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:23:25,322 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:23:25,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash 855384093, now seen corresponding path program 1 times [2024-11-19 09:23:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:25,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203754310] [2024-11-19 09:23:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:25,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:23:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:25,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:23:25,349 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:23:25,349 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-19 09:23:25,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-19 09:23:25,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-19 09:23:25,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-19 09:23:25,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-19 09:23:25,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:23:25,350 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-19 09:23:25,351 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:23:25,351 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 09:23:25,377 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:23:25,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 72 flow [2024-11-19 09:23:25,389 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-11-19 09:23:25,389 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 09:23:25,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 0/39 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2024-11-19 09:23:25,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 72 flow [2024-11-19 09:23:25,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 72 flow [2024-11-19 09:23:25,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:23:25,394 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;@583ab3bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:23:25,395 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 09:23:25,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:23:25,399 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:23:25,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:25,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:25,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:23:25,399 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)] === [2024-11-19 09:23:25,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash 176567, now seen corresponding path program 1 times [2024-11-19 09:23:25,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:25,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117411554] [2024-11-19 09:23:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:25,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:25,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:25,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:25,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117411554] [2024-11-19 09:23:25,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117411554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:25,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:25,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:25,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461193569] [2024-11-19 09:23:25,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:25,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:23:25,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:25,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:23:25,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:23:25,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 27 [2024-11-19 09:23:25,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 72 flow. Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:25,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:25,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 27 [2024-11-19 09:23:25,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:25,587 INFO L124 PetriNetUnfolderBase]: 279/576 cut-off events. [2024-11-19 09:23:25,588 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2024-11-19 09:23:25,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1108 conditions, 576 events. 279/576 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3605 event pairs, 279 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 210. Up to 450 conditions per place. [2024-11-19 09:23:25,598 INFO L140 encePairwiseOnDemand]: 26/27 looper letters, 14 selfloop transitions, 0 changer transitions 0/24 dead transitions. [2024-11-19 09:23:25,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 94 flow [2024-11-19 09:23:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:23:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:23:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 37 transitions. [2024-11-19 09:23:25,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-11-19 09:23:25,600 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 72 flow. Second operand 2 states and 37 transitions. [2024-11-19 09:23:25,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 94 flow [2024-11-19 09:23:25,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 92 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:25,603 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 64 flow [2024-11-19 09:23:25,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2024-11-19 09:23:25,605 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-11-19 09:23:25,606 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 64 flow [2024-11-19 09:23:25,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:25,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:25,606 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:23:25,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:23:25,607 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:23:25,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:25,607 INFO L85 PathProgramCache]: Analyzing trace with hash 169679185, now seen corresponding path program 1 times [2024-11-19 09:23:25,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:25,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895153063] [2024-11-19 09:23:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:25,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:25,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:25,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895153063] [2024-11-19 09:23:25,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895153063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:25,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:25,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:23:25,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737426154] [2024-11-19 09:23:25,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:25,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:25,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:25,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-19 09:23:25,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:25,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:25,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-19 09:23:25,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:25,789 INFO L124 PetriNetUnfolderBase]: 447/731 cut-off events. [2024-11-19 09:23:25,789 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-19 09:23:25,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 731 events. 447/731 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3400 event pairs, 161 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 1514. Up to 653 conditions per place. [2024-11-19 09:23:25,798 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 22 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2024-11-19 09:23:25,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 144 flow [2024-11-19 09:23:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-11-19 09:23:25,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.654320987654321 [2024-11-19 09:23:25,800 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 64 flow. Second operand 3 states and 53 transitions. [2024-11-19 09:23:25,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 144 flow [2024-11-19 09:23:25,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 144 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:25,802 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 94 flow [2024-11-19 09:23:25,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-11-19 09:23:25,802 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2024-11-19 09:23:25,803 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 94 flow [2024-11-19 09:23:25,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:25,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:25,803 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2024-11-19 09:23:25,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:23:25,803 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:23:25,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash -32874455, now seen corresponding path program 1 times [2024-11-19 09:23:25,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:25,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684873515] [2024-11-19 09:23:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:25,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:25,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:23:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:25,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:23:25,843 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:23:25,843 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-19 09:23:25,843 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-19 09:23:25,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-19 09:23:25,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-19 09:23:25,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-19 09:23:25,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-19 09:23:25,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:23:25,846 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-19 09:23:25,847 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:23:25,847 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 09:23:25,870 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:23:25,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 96 flow [2024-11-19 09:23:25,881 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-11-19 09:23:25,881 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 09:23:25,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 50 events. 0/50 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 137 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2024-11-19 09:23:25,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 34 transitions, 96 flow [2024-11-19 09:23:25,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 96 flow [2024-11-19 09:23:25,884 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:23:25,886 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;@583ab3bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:23:25,887 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-19 09:23:25,888 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:23:25,888 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:23:25,888 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:25,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:25,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:23:25,889 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)] === [2024-11-19 09:23:25,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:25,890 INFO L85 PathProgramCache]: Analyzing trace with hash 210329, now seen corresponding path program 1 times [2024-11-19 09:23:25,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:25,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082469941] [2024-11-19 09:23:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:25,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:25,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:25,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082469941] [2024-11-19 09:23:25,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082469941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:25,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:25,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:25,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788283602] [2024-11-19 09:23:25,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:25,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:23:25,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:25,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:23:25,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:23:25,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-11-19 09:23:25,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:25,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:25,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-11-19 09:23:25,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:26,185 INFO L124 PetriNetUnfolderBase]: 1623/2816 cut-off events. [2024-11-19 09:23:26,186 INFO L125 PetriNetUnfolderBase]: For 1972/1972 co-relation queries the response was YES. [2024-11-19 09:23:26,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5525 conditions, 2816 events. 1623/2816 cut-off events. For 1972/1972 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 20147 event pairs, 1623 based on Foata normal form. 0/1999 useless extension candidates. Maximal degree in co-relation 1122. Up to 2306 conditions per place. [2024-11-19 09:23:26,213 INFO L140 encePairwiseOnDemand]: 33/34 looper letters, 18 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2024-11-19 09:23:26,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 126 flow [2024-11-19 09:23:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:23:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:23:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 47 transitions. [2024-11-19 09:23:26,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6911764705882353 [2024-11-19 09:23:26,215 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 96 flow. Second operand 2 states and 47 transitions. [2024-11-19 09:23:26,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 126 flow [2024-11-19 09:23:26,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 31 transitions, 120 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:26,219 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 84 flow [2024-11-19 09:23:26,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=84, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-11-19 09:23:26,220 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-11-19 09:23:26,220 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 84 flow [2024-11-19 09:23:26,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:26,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:26,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:23:26,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:23:26,221 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:23:26,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash 202131513, now seen corresponding path program 1 times [2024-11-19 09:23:26,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:26,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164549839] [2024-11-19 09:23:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:26,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164549839] [2024-11-19 09:23:26,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164549839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:26,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:26,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:23:26,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624406911] [2024-11-19 09:23:26,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:26,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:26,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:26,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:26,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:26,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-19 09:23:26,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:26,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:26,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-19 09:23:26,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:26,748 INFO L124 PetriNetUnfolderBase]: 3473/4901 cut-off events. [2024-11-19 09:23:26,749 INFO L125 PetriNetUnfolderBase]: For 458/458 co-relation queries the response was YES. [2024-11-19 09:23:26,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10155 conditions, 4901 events. 3473/4901 cut-off events. For 458/458 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 25182 event pairs, 1433 based on Foata normal form. 0/3983 useless extension candidates. Maximal degree in co-relation 10148. Up to 4711 conditions per place. [2024-11-19 09:23:26,791 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 29 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2024-11-19 09:23:26,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 191 flow [2024-11-19 09:23:26,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:26,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-11-19 09:23:26,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 09:23:26,793 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 84 flow. Second operand 3 states and 68 transitions. [2024-11-19 09:23:26,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 191 flow [2024-11-19 09:23:26,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 191 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:26,796 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 123 flow [2024-11-19 09:23:26,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-11-19 09:23:26,799 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-11-19 09:23:26,799 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 123 flow [2024-11-19 09:23:26,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:26,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:26,800 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:26,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:23:26,800 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:23:26,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:26,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1408167593, now seen corresponding path program 1 times [2024-11-19 09:23:26,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:26,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970911304] [2024-11-19 09:23:26,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:26,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:26,822 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:23:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:26,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:23:26,836 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:23:26,838 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-19 09:23:26,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-19 09:23:26,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-19 09:23:26,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-19 09:23:26,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-19 09:23:26,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-19 09:23:26,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-19 09:23:26,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:23:26,839 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-19 09:23:26,841 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:23:26,842 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-19 09:23:26,880 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:23:26,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 41 transitions, 122 flow [2024-11-19 09:23:26,893 INFO L124 PetriNetUnfolderBase]: 0/61 cut-off events. [2024-11-19 09:23:26,893 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-19 09:23:26,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 61 events. 0/61 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2024-11-19 09:23:26,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 41 transitions, 122 flow [2024-11-19 09:23:26,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 41 transitions, 122 flow [2024-11-19 09:23:26,895 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:23:26,896 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;@583ab3bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:23:26,896 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-19 09:23:26,897 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:23:26,897 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:23:26,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:26,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:26,898 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:23:26,898 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)] === [2024-11-19 09:23:26,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:26,898 INFO L85 PathProgramCache]: Analyzing trace with hash 251042, now seen corresponding path program 1 times [2024-11-19 09:23:26,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:26,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707756290] [2024-11-19 09:23:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:26,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:26,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:26,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707756290] [2024-11-19 09:23:26,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707756290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:26,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:26,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:26,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050675729] [2024-11-19 09:23:26,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:26,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:23:26,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:23:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:23:26,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-11-19 09:23:26,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 122 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) [2024-11-19 09:23:26,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:26,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-11-19 09:23:26,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:28,259 INFO L124 PetriNetUnfolderBase]: 8535/13312 cut-off events. [2024-11-19 09:23:28,260 INFO L125 PetriNetUnfolderBase]: For 13236/13236 co-relation queries the response was YES. [2024-11-19 09:23:28,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26518 conditions, 13312 events. 8535/13312 cut-off events. For 13236/13236 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 103360 event pairs, 8535 based on Foata normal form. 0/9359 useless extension candidates. Maximal degree in co-relation 5602. Up to 11266 conditions per place. [2024-11-19 09:23:28,384 INFO L140 encePairwiseOnDemand]: 40/41 looper letters, 22 selfloop transitions, 0 changer transitions 0/38 dead transitions. [2024-11-19 09:23:28,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 38 transitions, 160 flow [2024-11-19 09:23:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:23:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:23:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 57 transitions. [2024-11-19 09:23:28,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6951219512195121 [2024-11-19 09:23:28,388 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 122 flow. Second operand 2 states and 57 transitions. [2024-11-19 09:23:28,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 38 transitions, 160 flow [2024-11-19 09:23:28,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 38 transitions, 148 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:28,406 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 104 flow [2024-11-19 09:23:28,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-11-19 09:23:28,409 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-11-19 09:23:28,409 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 104 flow [2024-11-19 09:23:28,409 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) [2024-11-19 09:23:28,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:28,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:23:28,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:23:28,410 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:23:28,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:28,413 INFO L85 PathProgramCache]: Analyzing trace with hash 241263592, now seen corresponding path program 1 times [2024-11-19 09:23:28,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:28,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767671968] [2024-11-19 09:23:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:28,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:28,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767671968] [2024-11-19 09:23:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767671968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:28,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:28,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:23:28,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205152049] [2024-11-19 09:23:28,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:28,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:28,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:28,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:28,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:28,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-11-19 09:23:28,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:28,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:28,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-11-19 09:23:28,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:30,999 INFO L124 PetriNetUnfolderBase]: 24009/31313 cut-off events. [2024-11-19 09:23:31,000 INFO L125 PetriNetUnfolderBase]: For 2330/2330 co-relation queries the response was YES. [2024-11-19 09:23:31,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64612 conditions, 31313 events. 24009/31313 cut-off events. For 2330/2330 co-relation queries the response was YES. Maximal size of possible extension queue 1441. Compared 169658 event pairs, 11031 based on Foata normal form. 0/24923 useless extension candidates. Maximal degree in co-relation 64604. Up to 30867 conditions per place. [2024-11-19 09:23:31,262 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 36 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-11-19 09:23:31,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 53 transitions, 238 flow [2024-11-19 09:23:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-19 09:23:31,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6747967479674797 [2024-11-19 09:23:31,264 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 104 flow. Second operand 3 states and 83 transitions. [2024-11-19 09:23:31,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 53 transitions, 238 flow [2024-11-19 09:23:31,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:31,271 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 152 flow [2024-11-19 09:23:31,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-11-19 09:23:31,273 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-19 09:23:31,273 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 152 flow [2024-11-19 09:23:31,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:31,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:31,273 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:31,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:23:31,274 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:23:31,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:31,274 INFO L85 PathProgramCache]: Analyzing trace with hash -847865375, now seen corresponding path program 1 times [2024-11-19 09:23:31,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:31,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349505137] [2024-11-19 09:23:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:31,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:31,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:31,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349505137] [2024-11-19 09:23:31,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349505137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:31,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:31,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:31,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9103625] [2024-11-19 09:23:31,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:31,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:31,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:31,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:31,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:31,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-11-19 09:23:31,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:31,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:31,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-11-19 09:23:31,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:32,919 INFO L124 PetriNetUnfolderBase]: 13439/19846 cut-off events. [2024-11-19 09:23:32,919 INFO L125 PetriNetUnfolderBase]: For 7894/7894 co-relation queries the response was YES. [2024-11-19 09:23:32,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41510 conditions, 19846 events. 13439/19846 cut-off events. For 7894/7894 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 135125 event pairs, 5255 based on Foata normal form. 5668/24391 useless extension candidates. Maximal degree in co-relation 41500. Up to 15240 conditions per place. [2024-11-19 09:23:33,319 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 32 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-11-19 09:23:33,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 256 flow [2024-11-19 09:23:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:33,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-11-19 09:23:33,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-11-19 09:23:33,336 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 152 flow. Second operand 3 states and 78 transitions. [2024-11-19 09:23:33,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 256 flow [2024-11-19 09:23:33,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:23:33,345 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 161 flow [2024-11-19 09:23:33,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-11-19 09:23:33,346 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-11-19 09:23:33,346 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 161 flow [2024-11-19 09:23:33,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:33,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:33,346 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:33,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:23:33,346 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:23:33,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash -761048003, now seen corresponding path program 1 times [2024-11-19 09:23:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:33,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998990635] [2024-11-19 09:23:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:33,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:33,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:23:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:33,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:23:33,378 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:23:33,378 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-19 09:23:33,378 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-19 09:23:33,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-19 09:23:33,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-19 09:23:33,379 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-19 09:23:33,380 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-11-19 09:23:33,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-19 09:23:33,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-19 09:23:33,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:23:33,382 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-19 09:23:33,383 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:23:33,383 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-19 09:23:33,420 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:23:33,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 48 transitions, 150 flow [2024-11-19 09:23:33,429 INFO L124 PetriNetUnfolderBase]: 0/72 cut-off events. [2024-11-19 09:23:33,430 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-19 09:23:33,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 72 events. 0/72 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 216 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2024-11-19 09:23:33,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 48 transitions, 150 flow [2024-11-19 09:23:33,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 48 transitions, 150 flow [2024-11-19 09:23:33,432 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:23:33,435 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;@583ab3bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:23:33,435 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-19 09:23:33,436 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:23:33,436 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:23:33,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:33,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:33,436 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:23:33,436 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:23:33,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:33,437 INFO L85 PathProgramCache]: Analyzing trace with hash 298706, now seen corresponding path program 1 times [2024-11-19 09:23:33,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:33,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748021551] [2024-11-19 09:23:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:33,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:33,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:33,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748021551] [2024-11-19 09:23:33,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748021551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:33,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:33,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:33,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111101395] [2024-11-19 09:23:33,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:33,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:23:33,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:33,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:23:33,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:23:33,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-11-19 09:23:33,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 150 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:33,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:33,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-11-19 09:23:33,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:38,030 INFO L124 PetriNetUnfolderBase]: 42327/61440 cut-off events. [2024-11-19 09:23:38,031 INFO L125 PetriNetUnfolderBase]: For 79796/79796 co-relation queries the response was YES. [2024-11-19 09:23:38,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123799 conditions, 61440 events. 42327/61440 cut-off events. For 79796/79796 co-relation queries the response was YES. Maximal size of possible extension queue 3378. Compared 499517 event pairs, 42327 based on Foata normal form. 0/42895 useless extension candidates. Maximal degree in co-relation 26850. Up to 53250 conditions per place. [2024-11-19 09:23:38,545 INFO L140 encePairwiseOnDemand]: 47/48 looper letters, 26 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2024-11-19 09:23:38,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 45 transitions, 196 flow [2024-11-19 09:23:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:23:38,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:23:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 67 transitions. [2024-11-19 09:23:38,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-11-19 09:23:38,549 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 150 flow. Second operand 2 states and 67 transitions. [2024-11-19 09:23:38,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 45 transitions, 196 flow [2024-11-19 09:23:38,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 45 transitions, 176 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:38,622 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 124 flow [2024-11-19 09:23:38,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-11-19 09:23:38,623 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2024-11-19 09:23:38,623 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 124 flow [2024-11-19 09:23:38,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:38,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:38,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:23:38,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 09:23:38,624 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:23:38,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 287075998, now seen corresponding path program 1 times [2024-11-19 09:23:38,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:38,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017565640] [2024-11-19 09:23:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:38,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:38,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:38,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017565640] [2024-11-19 09:23:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017565640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:38,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:38,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:23:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787036563] [2024-11-19 09:23:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:38,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:38,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:38,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:38,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 09:23:38,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-11-19 09:23:38,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:38,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 09:23:38,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:50,839 INFO L124 PetriNetUnfolderBase]: 153983/191303 cut-off events. [2024-11-19 09:23:50,840 INFO L125 PetriNetUnfolderBase]: For 11648/11648 co-relation queries the response was YES. [2024-11-19 09:23:51,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393239 conditions, 191303 events. 153983/191303 cut-off events. For 11648/11648 co-relation queries the response was YES. Maximal size of possible extension queue 6618. Compared 1068691 event pairs, 76663 based on Foata normal form. 0/150265 useless extension candidates. Maximal degree in co-relation 393230. Up to 190281 conditions per place. [2024-11-19 09:23:52,648 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 43 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-11-19 09:23:52,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 285 flow [2024-11-19 09:23:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-11-19 09:23:52,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2024-11-19 09:23:52,650 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 124 flow. Second operand 3 states and 98 transitions. [2024-11-19 09:23:52,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 285 flow [2024-11-19 09:23:52,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:52,667 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 181 flow [2024-11-19 09:23:52,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-11-19 09:23:52,668 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-19 09:23:52,668 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 181 flow [2024-11-19 09:23:52,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-11-19 09:23:52,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:52,668 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:52,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 09:23:52,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:23:52,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:52,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1758150479, now seen corresponding path program 1 times [2024-11-19 09:23:52,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:52,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514893236] [2024-11-19 09:23:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:52,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:23:52,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:52,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514893236] [2024-11-19 09:23:52,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514893236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:52,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:52,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:52,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412071443] [2024-11-19 09:23:52,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:52,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:52,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:52,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:52,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:52,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 09:23:52,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:52,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:52,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 09:23:52,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:59,503 INFO L124 PetriNetUnfolderBase]: 78146/108409 cut-off events. [2024-11-19 09:23:59,503 INFO L125 PetriNetUnfolderBase]: For 48322/48322 co-relation queries the response was YES. [2024-11-19 09:24:00,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224307 conditions, 108409 events. 78146/108409 cut-off events. For 48322/48322 co-relation queries the response was YES. Maximal size of possible extension queue 4489. Compared 791435 event pairs, 35211 based on Foata normal form. 34312/134944 useless extension candidates. Maximal degree in co-relation 224296. Up to 83683 conditions per place. [2024-11-19 09:24:00,711 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 38 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2024-11-19 09:24:00,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 306 flow [2024-11-19 09:24:00,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:24:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:24:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-11-19 09:24:00,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-19 09:24:00,713 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 181 flow. Second operand 3 states and 92 transitions. [2024-11-19 09:24:00,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 306 flow [2024-11-19 09:24:00,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:24:00,730 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 192 flow [2024-11-19 09:24:00,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-11-19 09:24:00,731 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-11-19 09:24:00,731 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 192 flow [2024-11-19 09:24:00,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:24:00,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:24:00,731 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:24:00,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 09:24:00,732 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-19 09:24:00,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:24:00,732 INFO L85 PathProgramCache]: Analyzing trace with hash 520026501, now seen corresponding path program 1 times [2024-11-19 09:24:00,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:24:00,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013787525] [2024-11-19 09:24:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:24:00,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:24:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:24:00,747 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:24:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:24:00,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:24:00,761 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:24:00,761 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-19 09:24:00,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2024-11-19 09:24:00,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 9 remaining) [2024-11-19 09:24:00,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 9 remaining) [2024-11-19 09:24:00,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2024-11-19 09:24:00,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2024-11-19 09:24:00,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2024-11-19 09:24:00,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2024-11-19 09:24:00,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-19 09:24:00,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 09:24:00,763 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-19 09:24:00,764 WARN L244 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:24:00,766 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-11-19 09:24:00,792 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:24:00,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 55 transitions, 180 flow [2024-11-19 09:24:00,808 INFO L124 PetriNetUnfolderBase]: 0/83 cut-off events. [2024-11-19 09:24:00,808 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-19 09:24:00,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 83 events. 0/83 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 272 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2024-11-19 09:24:00,809 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 55 transitions, 180 flow [2024-11-19 09:24:00,809 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 55 transitions, 180 flow [2024-11-19 09:24:00,810 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:24:00,810 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;@583ab3bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:24:00,810 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-19 09:24:00,811 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:24:00,811 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:24:00,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:24:00,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:24:00,816 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:24:00,816 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-11-19 09:24:00,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:24:00,817 INFO L85 PathProgramCache]: Analyzing trace with hash 353321, now seen corresponding path program 1 times [2024-11-19 09:24:00,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:24:00,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514187132] [2024-11-19 09:24:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:24:00,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:24:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:24:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:24:00,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:24:00,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514187132] [2024-11-19 09:24:00,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514187132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:24:00,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:24:00,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:24:00,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735951753] [2024-11-19 09:24:00,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:24:00,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:24:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:24:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:24:00,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:24:00,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 55 [2024-11-19 09:24:00,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:24:00,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:24:00,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 55 [2024-11-19 09:24:00,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand