./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:27:08,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:27:09,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:27:09,059 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:27:09,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:27:09,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:27:09,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:27:09,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:27:09,094 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:27:09,095 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:27:09,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:27:09,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:27:09,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:27:09,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:27:09,099 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:27:09,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:27:09,099 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:27:09,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:27:09,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:27:09,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:27:09,101 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:27:09,104 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:27:09,104 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:27:09,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:27:09,104 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:27:09,105 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:27:09,105 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:27:09,105 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:27:09,106 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:27:09,106 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:27:09,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:27:09,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:27:09,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:27:09,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:27:09,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:27:09,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:27:09,108 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:27:09,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:27:09,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:27:09,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:27:09,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:27:09,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:27:09,110 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955 [2024-10-11 19:27:09,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:27:09,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:27:09,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:27:09,429 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:27:09,430 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:27:09,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i [2024-10-11 19:27:10,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:27:11,085 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:27:11,086 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i [2024-10-11 19:27:11,100 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0ec7c901f/e2d8ea30a15d4751959a6323e8c8997d/FLAGb522211c2 [2024-10-11 19:27:11,429 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0ec7c901f/e2d8ea30a15d4751959a6323e8c8997d [2024-10-11 19:27:11,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:27:11,433 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:27:11,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:27:11,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:27:11,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:27:11,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:11,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bacb69e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:11, skipping insertion in model container [2024-10-11 19:27:11,443 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:27:11" (1/1) ... [2024-10-11 19:27:11,489 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:27:11,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:27:11,885 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:27:11,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:27:12,026 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:27:12,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12 WrapperNode [2024-10-11 19:27:12,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:27:12,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:27:12,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:27:12,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:27:12,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (1/1) ... [2024-10-11 19:27:12,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (1/1) ... [2024-10-11 19:27:12,071 INFO L138 Inliner]: procedures = 171, calls = 23, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 135 [2024-10-11 19:27:12,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:27:12,073 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:27:12,073 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:27:12,073 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:27:12,083 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (1/1) ... [2024-10-11 19:27:12,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (1/1) ... [2024-10-11 19:27:12,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (1/1) ... [2024-10-11 19:27:12,098 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 19:27:12,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (1/1) ... [2024-10-11 19:27:12,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (1/1) ... [2024-10-11 19:27:12,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (1/1) ... [2024-10-11 19:27:12,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (1/1) ... [2024-10-11 19:27:12,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (1/1) ... [2024-10-11 19:27:12,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (1/1) ... [2024-10-11 19:27:12,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:27:12,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:27:12,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:27:12,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:27:12,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (1/1) ... [2024-10-11 19:27:12,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:27:12,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:27:12,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:27:12,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:27:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 19:27:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 19:27:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:27:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:27:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:27:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:27:12,213 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:27:12,353 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:27:12,355 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:27:12,622 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:27:12,622 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:27:12,773 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:27:12,774 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 19:27:12,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:27:12 BoogieIcfgContainer [2024-10-11 19:27:12,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:27:12,776 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:27:12,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:27:12,780 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:27:12,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:27:11" (1/3) ... [2024-10-11 19:27:12,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7967c73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:27:12, skipping insertion in model container [2024-10-11 19:27:12,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:27:12" (2/3) ... [2024-10-11 19:27:12,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7967c73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:27:12, skipping insertion in model container [2024-10-11 19:27:12,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:27:12" (3/3) ... [2024-10-11 19:27:12,782 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2024-10-11 19:27:12,795 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:27:12,795 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-11 19:27:12,795 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:27:12,854 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:27:12,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 46 transitions, 96 flow [2024-10-11 19:27:12,918 INFO L124 PetriNetUnfolderBase]: 7/50 cut-off events. [2024-10-11 19:27:12,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:27:12,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 7/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 136 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-10-11 19:27:12,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 46 transitions, 96 flow [2024-10-11 19:27:12,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 46 transitions, 96 flow [2024-10-11 19:27:12,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:27:12,942 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;@58eabc64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:27:12,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-11 19:27:12,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:27:12,947 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:27:12,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:27:12,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:12,949 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:27:12,950 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 19:27:12,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:12,955 INFO L85 PathProgramCache]: Analyzing trace with hash 472821, now seen corresponding path program 1 times [2024-10-11 19:27:12,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:12,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740612929] [2024-10-11 19:27:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:12,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:13,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:13,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740612929] [2024-10-11 19:27:13,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740612929] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:13,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:13,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:13,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817738394] [2024-10-11 19:27:13,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:13,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:27:13,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:13,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:27:13,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:27:13,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-10-11 19:27:13,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 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) [2024-10-11 19:27:13,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:13,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-10-11 19:27:13,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:13,288 INFO L124 PetriNetUnfolderBase]: 47/141 cut-off events. [2024-10-11 19:27:13,291 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:27:13,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 141 events. 47/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 565 event pairs, 38 based on Foata normal form. 12/150 useless extension candidates. Maximal degree in co-relation 236. Up to 104 conditions per place. [2024-10-11 19:27:13,295 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 24 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2024-10-11 19:27:13,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 126 flow [2024-10-11 19:27:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:27:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:27:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 57 transitions. [2024-10-11 19:27:13,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6195652173913043 [2024-10-11 19:27:13,311 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 96 flow. Second operand 2 states and 57 transitions. [2024-10-11 19:27:13,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 126 flow [2024-10-11 19:27:13,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:27:13,317 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 78 flow [2024-10-11 19:27:13,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2024-10-11 19:27:13,324 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2024-10-11 19:27:13,325 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 78 flow [2024-10-11 19:27:13,325 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) [2024-10-11 19:27:13,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:13,326 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 19:27:13,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:27:13,326 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 19:27:13,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:13,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1202806556, now seen corresponding path program 1 times [2024-10-11 19:27:13,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:13,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687812747] [2024-10-11 19:27:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:13,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:27:13,363 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:27:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:27:13,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:27:13,397 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:27:13,399 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-10-11 19:27:13,401 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-11 19:27:13,402 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-11 19:27:13,402 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-10-11 19:27:13,402 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-10-11 19:27:13,402 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-10-11 19:27:13,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:27:13,403 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 19:27:13,406 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:27:13,406 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 19:27:13,454 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:27:13,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 85 transitions, 180 flow [2024-10-11 19:27:13,484 INFO L124 PetriNetUnfolderBase]: 14/94 cut-off events. [2024-10-11 19:27:13,484 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:27:13,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 94 events. 14/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 364 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 81. Up to 3 conditions per place. [2024-10-11 19:27:13,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 85 transitions, 180 flow [2024-10-11 19:27:13,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 85 transitions, 180 flow [2024-10-11 19:27:13,491 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:27:13,519 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;@58eabc64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:27:13,522 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-11 19:27:13,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:27:13,527 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:27:13,527 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:27:13,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:13,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:27:13,531 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 19:27:13,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:13,532 INFO L85 PathProgramCache]: Analyzing trace with hash 557226, now seen corresponding path program 1 times [2024-10-11 19:27:13,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:13,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634343285] [2024-10-11 19:27:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:13,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:13,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:13,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634343285] [2024-10-11 19:27:13,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634343285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:13,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:13,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:13,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350860472] [2024-10-11 19:27:13,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:13,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:27:13,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:13,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:27:13,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:27:13,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 85 [2024-10-11 19:27:13,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 85 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:27:13,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:13,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 85 [2024-10-11 19:27:13,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:14,189 INFO L124 PetriNetUnfolderBase]: 2307/4407 cut-off events. [2024-10-11 19:27:14,191 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-10-11 19:27:14,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7952 conditions, 4407 events. 2307/4407 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 31660 event pairs, 1938 based on Foata normal form. 480/4698 useless extension candidates. Maximal degree in co-relation 3680. Up to 3480 conditions per place. [2024-10-11 19:27:14,227 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 45 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2024-10-11 19:27:14,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 240 flow [2024-10-11 19:27:14,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:27:14,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:27:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 106 transitions. [2024-10-11 19:27:14,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6235294117647059 [2024-10-11 19:27:14,232 INFO L175 Difference]: Start difference. First operand has 76 places, 85 transitions, 180 flow. Second operand 2 states and 106 transitions. [2024-10-11 19:27:14,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 240 flow [2024-10-11 19:27:14,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:27:14,236 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 150 flow [2024-10-11 19:27:14,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-10-11 19:27:14,237 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2024-10-11 19:27:14,238 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 150 flow [2024-10-11 19:27:14,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:27:14,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:14,239 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-11 19:27:14,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:27:14,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 19:27:14,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:14,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1291827328, now seen corresponding path program 1 times [2024-10-11 19:27:14,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:14,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927555022] [2024-10-11 19:27:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:14,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:27:14,269 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:27:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:27:14,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:27:14,295 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:27:14,297 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-10-11 19:27:14,298 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-10-11 19:27:14,298 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-10-11 19:27:14,298 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-10-11 19:27:14,298 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-10-11 19:27:14,299 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-10-11 19:27:14,299 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-10-11 19:27:14,299 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-10-11 19:27:14,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:27:14,299 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 19:27:14,300 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:27:14,300 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 19:27:14,358 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:27:14,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 124 transitions, 266 flow [2024-10-11 19:27:14,378 INFO L124 PetriNetUnfolderBase]: 21/138 cut-off events. [2024-10-11 19:27:14,378 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 19:27:14,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 138 events. 21/138 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 591 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 119. Up to 4 conditions per place. [2024-10-11 19:27:14,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 124 transitions, 266 flow [2024-10-11 19:27:14,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 124 transitions, 266 flow [2024-10-11 19:27:14,383 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:27:14,385 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;@58eabc64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:27:14,385 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-11 19:27:14,387 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:27:14,387 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:27:14,387 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:27:14,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:14,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:27:14,387 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-11 19:27:14,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:14,388 INFO L85 PathProgramCache]: Analyzing trace with hash 680358, now seen corresponding path program 1 times [2024-10-11 19:27:14,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:14,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556161087] [2024-10-11 19:27:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:14,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:14,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:14,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556161087] [2024-10-11 19:27:14,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556161087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:14,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:14,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:14,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92414056] [2024-10-11 19:27:14,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:14,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:27:14,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:27:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:27:14,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 124 [2024-10-11 19:27:14,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 124 transitions, 266 flow. Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:27:14,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:14,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 124 [2024-10-11 19:27:14,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:27:22,138 INFO L124 PetriNetUnfolderBase]: 73907/116465 cut-off events. [2024-10-11 19:27:22,138 INFO L125 PetriNetUnfolderBase]: For 2602/2602 co-relation queries the response was YES. [2024-10-11 19:27:22,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215573 conditions, 116465 events. 73907/116465 cut-off events. For 2602/2602 co-relation queries the response was YES. Maximal size of possible extension queue 4979. Compared 1039605 event pairs, 62738 based on Foata normal form. 14484/125760 useless extension candidates. Maximal degree in co-relation 19604. Up to 97442 conditions per place. [2024-10-11 19:27:23,161 INFO L140 encePairwiseOnDemand]: 111/124 looper letters, 66 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2024-10-11 19:27:23,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 103 transitions, 356 flow [2024-10-11 19:27:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:27:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:27:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 155 transitions. [2024-10-11 19:27:23,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-10-11 19:27:23,167 INFO L175 Difference]: Start difference. First operand has 110 places, 124 transitions, 266 flow. Second operand 2 states and 155 transitions. [2024-10-11 19:27:23,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 103 transitions, 356 flow [2024-10-11 19:27:23,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 354 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 19:27:23,175 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 222 flow [2024-10-11 19:27:23,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=222, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-10-11 19:27:23,177 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, -8 predicate places. [2024-10-11 19:27:23,178 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 222 flow [2024-10-11 19:27:23,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:27:23,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:23,179 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-11 19:27:23,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:27:23,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-10-11 19:27:23,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:23,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1937147035, now seen corresponding path program 1 times [2024-10-11 19:27:23,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:23,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342033279] [2024-10-11 19:27:23,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:23,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:27:23,209 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:27:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:27:23,226 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:27:23,227 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:27:23,227 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-11 19:27:23,227 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (8 of 10 remaining) [2024-10-11 19:27:23,227 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 10 remaining) [2024-10-11 19:27:23,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2024-10-11 19:27:23,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2024-10-11 19:27:23,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2024-10-11 19:27:23,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2024-10-11 19:27:23,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2024-10-11 19:27:23,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2024-10-11 19:27:23,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2024-10-11 19:27:23,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 19:27:23,229 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 19:27:23,230 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:27:23,230 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-11 19:27:23,280 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:27:23,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 163 transitions, 354 flow [2024-10-11 19:27:23,314 INFO L124 PetriNetUnfolderBase]: 28/182 cut-off events. [2024-10-11 19:27:23,315 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 19:27:23,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 182 events. 28/182 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 826 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 157. Up to 5 conditions per place. [2024-10-11 19:27:23,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 163 transitions, 354 flow [2024-10-11 19:27:23,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 163 transitions, 354 flow [2024-10-11 19:27:23,321 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:27:23,325 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;@58eabc64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:27:23,326 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-11 19:27:23,327 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:27:23,327 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:27:23,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:27:23,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:27:23,327 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:27:23,327 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-10-11 19:27:23,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:27:23,328 INFO L85 PathProgramCache]: Analyzing trace with hash 842217, now seen corresponding path program 1 times [2024-10-11 19:27:23,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:27:23,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972851778] [2024-10-11 19:27:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:27:23,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:27:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:27:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:27:23,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:27:23,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972851778] [2024-10-11 19:27:23,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972851778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:27:23,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:27:23,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:27:23,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609583001] [2024-10-11 19:27:23,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:27:23,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:27:23,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:27:23,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:27:23,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:27:23,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 163 [2024-10-11 19:27:23,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 163 transitions, 354 flow. Second operand has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:27:23,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:27:23,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 163 [2024-10-11 19:27:23,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand