./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d 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/45_monabsex1_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 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:09:13,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:09:13,941 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:09:13,948 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:09:13,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:09:13,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:09:13,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:09:13,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:09:13,980 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:09:13,982 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:09:13,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:09:13,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:09:13,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:09:13,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:09:13,985 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:09:13,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:09:13,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:09:13,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:09:13,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:09:13,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:09:13,986 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:09:13,989 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:09:13,989 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:09:13,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:09:13,990 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:09:13,990 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:09:13,990 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:09:13,990 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:09:13,990 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:09:13,991 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:09:13,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:09:13,991 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:09:13,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:09:13,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:09:13,992 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:09:13,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:09:13,992 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:09:13,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:09:13,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:09:13,993 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:09:13,993 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:09:13,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:09:13,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 [2024-11-17 03:09:14,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:09:14,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:09:14,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:09:14,287 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:09:14,287 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:09:14,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2024-11-17 03:09:15,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:09:15,971 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:09:15,972 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2024-11-17 03:09:15,984 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf9a2882c/c451286c915a46369b3f0fb70bf6b588/FLAGd4ca68f2b [2024-11-17 03:09:16,003 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf9a2882c/c451286c915a46369b3f0fb70bf6b588 [2024-11-17 03:09:16,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:09:16,007 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:09:16,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:09:16,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:09:16,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:09:16,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6c9ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16, skipping insertion in model container [2024-11-17 03:09:16,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:09:16,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:09:16,410 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:09:16,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:09:16,507 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:09:16,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16 WrapperNode [2024-11-17 03:09:16,508 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:09:16,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:09:16,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:09:16,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:09:16,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,551 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2024-11-17 03:09:16,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:09:16,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:09:16,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:09:16,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:09:16,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,563 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,576 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]. [2024-11-17 03:09:16,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,580 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,581 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:09:16,585 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:09:16,585 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:09:16,585 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:09:16,586 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (1/1) ... [2024-11-17 03:09:16,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:09:16,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:09:16,624 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) [2024-11-17 03:09:16,627 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 [2024-11-17 03:09:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-17 03:09:16,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-17 03:09:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 03:09:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:09:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:09:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 03:09:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:09:16,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:09:16,677 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:09:16,815 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:09:16,817 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:09:16,925 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:09:16,926 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:09:17,019 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:09:17,019 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:09:17,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:09:17 BoogieIcfgContainer [2024-11-17 03:09:17,020 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:09:17,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:09:17,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:09:17,027 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:09:17,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:09:16" (1/3) ... [2024-11-17 03:09:17,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f499598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:09:17, skipping insertion in model container [2024-11-17 03:09:17,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:09:16" (2/3) ... [2024-11-17 03:09:17,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f499598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:09:17, skipping insertion in model container [2024-11-17 03:09:17,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:09:17" (3/3) ... [2024-11-17 03:09:17,032 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2024-11-17 03:09:17,049 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:09:17,051 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-17 03:09:17,051 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:09:17,093 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:09:17,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 17 places, 15 transitions, 34 flow [2024-11-17 03:09:17,156 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-11-17 03:09:17,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:09:17,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 2/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 12. Up to 4 conditions per place. [2024-11-17 03:09:17,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 17 places, 15 transitions, 34 flow [2024-11-17 03:09:17,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 17 places, 15 transitions, 34 flow [2024-11-17 03:09:17,179 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:09:17,188 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;@627ce4c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:09:17,189 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-17 03:09:17,193 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:09:17,194 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:09:17,195 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:09:17,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:17,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:09:17,196 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)] === [2024-11-17 03:09:17,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:17,203 INFO L85 PathProgramCache]: Analyzing trace with hash 3728993, now seen corresponding path program 1 times [2024-11-17 03:09:17,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:17,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089339927] [2024-11-17 03:09:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:17,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:09:17,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:17,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089339927] [2024-11-17 03:09:17,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089339927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:17,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:17,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:09:17,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241245891] [2024-11-17 03:09:17,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:17,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:09:17,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:09:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:09:17,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 15 [2024-11-17 03:09:17,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 34 flow. Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-11-17 03:09:17,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:17,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 15 [2024-11-17 03:09:17,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:17,452 INFO L124 PetriNetUnfolderBase]: 5/22 cut-off events. [2024-11-17 03:09:17,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:09:17,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 22 events. 5/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 37 event pairs, 5 based on Foata normal form. 7/27 useless extension candidates. Maximal degree in co-relation 33. Up to 20 conditions per place. [2024-11-17 03:09:17,454 INFO L140 encePairwiseOnDemand]: 13/15 looper letters, 8 selfloop transitions, 0 changer transitions 0/10 dead transitions. [2024-11-17 03:09:17,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 10 transitions, 40 flow [2024-11-17 03:09:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:09:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:09:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 18 transitions. [2024-11-17 03:09:17,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-17 03:09:17,467 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 34 flow. Second operand 2 states and 18 transitions. [2024-11-17 03:09:17,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 10 transitions, 40 flow [2024-11-17 03:09:17,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 10 transitions, 40 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:09:17,473 INFO L231 Difference]: Finished difference. Result has 14 places, 10 transitions, 24 flow [2024-11-17 03:09:17,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, 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} [2024-11-17 03:09:17,478 INFO L277 CegarLoopForPetriNet]: 17 programPoint places, -3 predicate places. [2024-11-17 03:09:17,479 INFO L471 AbstractCegarLoop]: Abstraction has has 14 places, 10 transitions, 24 flow [2024-11-17 03:09:17,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-11-17 03:09:17,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:17,481 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-17 03:09:17,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:09:17,482 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)] === [2024-11-17 03:09:17,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:17,483 INFO L85 PathProgramCache]: Analyzing trace with hash -604960871, now seen corresponding path program 1 times [2024-11-17 03:09:17,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:17,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826890188] [2024-11-17 03:09:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:17,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:09:17,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:09:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:09:17,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:09:17,550 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:09:17,552 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-17 03:09:17,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-17 03:09:17,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-17 03:09:17,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-17 03:09:17,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:09:17,555 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 03:09:17,559 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:09:17,559 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:09:17,589 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:09:17,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 52 flow [2024-11-17 03:09:17,604 INFO L124 PetriNetUnfolderBase]: 3/35 cut-off events. [2024-11-17 03:09:17,604 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:09:17,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 35 events. 3/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 82 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 24. Up to 6 conditions per place. [2024-11-17 03:09:17,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 52 flow [2024-11-17 03:09:17,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 21 transitions, 52 flow [2024-11-17 03:09:17,610 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:09:17,611 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;@627ce4c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:09:17,611 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-17 03:09:17,614 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:09:17,615 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:09:17,615 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:09:17,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:17,615 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:09:17,618 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)] === [2024-11-17 03:09:17,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:17,619 INFO L85 PathProgramCache]: Analyzing trace with hash 4375457, now seen corresponding path program 1 times [2024-11-17 03:09:17,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:17,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885900545] [2024-11-17 03:09:17,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:17,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:09:17,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:17,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885900545] [2024-11-17 03:09:17,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885900545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:17,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:17,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:09:17,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699944089] [2024-11-17 03:09:17,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:17,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:09:17,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:17,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:09:17,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:09:17,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-11-17 03:09:17,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 52 flow. Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-11-17 03:09:17,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:17,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-11-17 03:09:17,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:17,764 INFO L124 PetriNetUnfolderBase]: 95/189 cut-off events. [2024-11-17 03:09:17,765 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 03:09:17,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 189 events. 95/189 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 709 event pairs, 95 based on Foata normal form. 43/206 useless extension candidates. Maximal degree in co-relation 201. Up to 182 conditions per place. [2024-11-17 03:09:17,768 INFO L140 encePairwiseOnDemand]: 19/21 looper letters, 14 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2024-11-17 03:09:17,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 16 transitions, 70 flow [2024-11-17 03:09:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:09:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:09:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 24 transitions. [2024-11-17 03:09:17,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-17 03:09:17,770 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 52 flow. Second operand 2 states and 24 transitions. [2024-11-17 03:09:17,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 16 transitions, 70 flow [2024-11-17 03:09:17,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 70 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:09:17,776 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 42 flow [2024-11-17 03:09:17,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2024-11-17 03:09:17,777 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, -3 predicate places. [2024-11-17 03:09:17,778 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 42 flow [2024-11-17 03:09:17,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-11-17 03:09:17,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:17,780 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:17,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:09:17,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-17 03:09:17,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:17,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1474164434, now seen corresponding path program 1 times [2024-11-17 03:09:17,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:17,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798250508] [2024-11-17 03:09:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:17,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:09:17,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:17,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798250508] [2024-11-17 03:09:17,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798250508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:17,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:17,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:09:17,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687243695] [2024-11-17 03:09:17,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:17,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:09:17,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:17,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:09:17,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:09:17,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2024-11-17 03:09:17,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2024-11-17 03:09:17,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:17,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2024-11-17 03:09:17,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:18,014 INFO L124 PetriNetUnfolderBase]: 109/219 cut-off events. [2024-11-17 03:09:18,015 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-17 03:09:18,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 219 events. 109/219 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 958 event pairs, 45 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 449. Up to 116 conditions per place. [2024-11-17 03:09:18,018 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 20 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2024-11-17 03:09:18,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 25 transitions, 111 flow [2024-11-17 03:09:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:09:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:09:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2024-11-17 03:09:18,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-17 03:09:18,021 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 42 flow. Second operand 3 states and 36 transitions. [2024-11-17 03:09:18,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 25 transitions, 111 flow [2024-11-17 03:09:18,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 25 transitions, 111 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:09:18,024 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 64 flow [2024-11-17 03:09:18,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2024-11-17 03:09:18,027 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2024-11-17 03:09:18,028 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 64 flow [2024-11-17 03:09:18,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2024-11-17 03:09:18,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:18,029 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1] [2024-11-17 03:09:18,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:09:18,029 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)] === [2024-11-17 03:09:18,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:18,030 INFO L85 PathProgramCache]: Analyzing trace with hash 325937008, now seen corresponding path program 1 times [2024-11-17 03:09:18,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:18,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018837036] [2024-11-17 03:09:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:18,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:09:18,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:09:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:09:18,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:09:18,071 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:09:18,072 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-17 03:09:18,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-17 03:09:18,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-17 03:09:18,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-17 03:09:18,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-17 03:09:18,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:09:18,077 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-17 03:09:18,078 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:09:18,078 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 03:09:18,109 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:09:18,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 27 transitions, 72 flow [2024-11-17 03:09:18,124 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2024-11-17 03:09:18,124 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 03:09:18,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 4/48 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 41. Up to 8 conditions per place. [2024-11-17 03:09:18,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 27 transitions, 72 flow [2024-11-17 03:09:18,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 27 transitions, 72 flow [2024-11-17 03:09:18,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:09:18,129 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;@627ce4c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:09:18,132 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-17 03:09:18,134 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:09:18,134 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:09:18,134 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:09:18,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:18,135 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:09:18,135 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)] === [2024-11-17 03:09:18,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:18,135 INFO L85 PathProgramCache]: Analyzing trace with hash 5206625, now seen corresponding path program 1 times [2024-11-17 03:09:18,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:18,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438677152] [2024-11-17 03:09:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:18,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:09:18,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:18,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438677152] [2024-11-17 03:09:18,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438677152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:18,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:18,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:09:18,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514085283] [2024-11-17 03:09:18,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:18,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:09:18,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:18,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:09:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:09:18,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-17 03:09:18,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 72 flow. Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-11-17 03:09:18,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:18,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-17 03:09:18,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:18,367 INFO L124 PetriNetUnfolderBase]: 995/1554 cut-off events. [2024-11-17 03:09:18,368 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-11-17 03:09:18,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3236 conditions, 1554 events. 995/1554 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7439 event pairs, 995 based on Foata normal form. 259/1571 useless extension candidates. Maximal degree in co-relation 395. Up to 1514 conditions per place. [2024-11-17 03:09:18,384 INFO L140 encePairwiseOnDemand]: 25/27 looper letters, 20 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2024-11-17 03:09:18,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 102 flow [2024-11-17 03:09:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:09:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:09:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 30 transitions. [2024-11-17 03:09:18,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-17 03:09:18,386 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 72 flow. Second operand 2 states and 30 transitions. [2024-11-17 03:09:18,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 102 flow [2024-11-17 03:09:18,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 100 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-17 03:09:18,388 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 60 flow [2024-11-17 03:09:18,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2024-11-17 03:09:18,389 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2024-11-17 03:09:18,391 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 60 flow [2024-11-17 03:09:18,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-11-17 03:09:18,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:18,392 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:18,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:09:18,392 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:09:18,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash 465862312, now seen corresponding path program 1 times [2024-11-17 03:09:18,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:18,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739848416] [2024-11-17 03:09:18,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:18,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:09:18,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:18,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739848416] [2024-11-17 03:09:18,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739848416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:18,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:18,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:09:18,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516535981] [2024-11-17 03:09:18,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:18,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:09:18,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:18,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:09:18,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:09:18,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-17 03:09:18,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2024-11-17 03:09:18,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:18,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-17 03:09:18,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:18,632 INFO L124 PetriNetUnfolderBase]: 1343/2085 cut-off events. [2024-11-17 03:09:18,633 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-11-17 03:09:18,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4309 conditions, 2085 events. 1343/2085 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11277 event pairs, 681 based on Foata normal form. 0/1779 useless extension candidates. Maximal degree in co-relation 4303. Up to 1272 conditions per place. [2024-11-17 03:09:18,648 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 31 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2024-11-17 03:09:18,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 170 flow [2024-11-17 03:09:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:09:18,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:09:18,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-11-17 03:09:18,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-17 03:09:18,651 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 60 flow. Second operand 3 states and 48 transitions. [2024-11-17 03:09:18,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 170 flow [2024-11-17 03:09:18,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:09:18,655 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 90 flow [2024-11-17 03:09:18,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2024-11-17 03:09:18,656 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2024-11-17 03:09:18,656 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 90 flow [2024-11-17 03:09:18,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2024-11-17 03:09:18,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:18,657 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:18,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:09:18,658 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:09:18,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:18,659 INFO L85 PathProgramCache]: Analyzing trace with hash 998885113, now seen corresponding path program 1 times [2024-11-17 03:09:18,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:18,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481113485] [2024-11-17 03:09:18,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:18,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:09:18,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:18,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481113485] [2024-11-17 03:09:18,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481113485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:18,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:18,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:09:18,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357697641] [2024-11-17 03:09:18,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:18,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:09:18,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:18,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:09:18,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:09:18,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-17 03:09:18,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-17 03:09:18,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:18,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-17 03:09:18,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:19,014 INFO L124 PetriNetUnfolderBase]: 1689/2672 cut-off events. [2024-11-17 03:09:19,014 INFO L125 PetriNetUnfolderBase]: For 1086/1086 co-relation queries the response was YES. [2024-11-17 03:09:19,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6354 conditions, 2672 events. 1689/2672 cut-off events. For 1086/1086 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 15418 event pairs, 787 based on Foata normal form. 0/2422 useless extension candidates. Maximal degree in co-relation 6346. Up to 1546 conditions per place. [2024-11-17 03:09:19,034 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 33 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2024-11-17 03:09:19,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 223 flow [2024-11-17 03:09:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:09:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:09:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-11-17 03:09:19,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5802469135802469 [2024-11-17 03:09:19,036 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 90 flow. Second operand 3 states and 47 transitions. [2024-11-17 03:09:19,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 223 flow [2024-11-17 03:09:19,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:09:19,047 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 130 flow [2024-11-17 03:09:19,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-11-17 03:09:19,048 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2024-11-17 03:09:19,048 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 130 flow [2024-11-17 03:09:19,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-17 03:09:19,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:19,048 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:19,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:09:19,048 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:09:19,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:19,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1803824757, now seen corresponding path program 1 times [2024-11-17 03:09:19,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:19,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110914958] [2024-11-17 03:09:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:19,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:09:19,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:19,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110914958] [2024-11-17 03:09:19,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110914958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:19,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:19,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:09:19,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040639885] [2024-11-17 03:09:19,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:19,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:09:19,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:19,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:09:19,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:09:19,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-17 03:09:19,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-17 03:09:19,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:19,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-17 03:09:19,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:19,701 INFO L124 PetriNetUnfolderBase]: 2811/4434 cut-off events. [2024-11-17 03:09:19,702 INFO L125 PetriNetUnfolderBase]: For 2671/2671 co-relation queries the response was YES. [2024-11-17 03:09:19,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11722 conditions, 4434 events. 2811/4434 cut-off events. For 2671/2671 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 28915 event pairs, 435 based on Foata normal form. 42/4064 useless extension candidates. Maximal degree in co-relation 11713. Up to 1504 conditions per place. [2024-11-17 03:09:19,735 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 69 selfloop transitions, 18 changer transitions 0/89 dead transitions. [2024-11-17 03:09:19,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 89 transitions, 548 flow [2024-11-17 03:09:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:09:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:09:19,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-11-17 03:09:19,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-11-17 03:09:19,737 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 130 flow. Second operand 6 states and 102 transitions. [2024-11-17 03:09:19,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 89 transitions, 548 flow [2024-11-17 03:09:19,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 89 transitions, 514 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:09:19,755 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 277 flow [2024-11-17 03:09:19,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2024-11-17 03:09:19,756 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2024-11-17 03:09:19,756 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 277 flow [2024-11-17 03:09:19,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-17 03:09:19,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:19,757 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:19,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:09:19,757 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:09:19,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:19,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2144259979, now seen corresponding path program 2 times [2024-11-17 03:09:19,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:19,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958657136] [2024-11-17 03:09:19,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:19,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:09:19,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:19,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958657136] [2024-11-17 03:09:19,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958657136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:19,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:19,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:09:19,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726344481] [2024-11-17 03:09:19,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:19,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:09:19,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:09:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:09:19,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-17 03:09:19,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 277 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-17 03:09:19,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:19,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-17 03:09:19,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:20,422 INFO L124 PetriNetUnfolderBase]: 2981/4761 cut-off events. [2024-11-17 03:09:20,423 INFO L125 PetriNetUnfolderBase]: For 5804/5804 co-relation queries the response was YES. [2024-11-17 03:09:20,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14260 conditions, 4761 events. 2981/4761 cut-off events. For 5804/5804 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 32206 event pairs, 321 based on Foata normal form. 84/4525 useless extension candidates. Maximal degree in co-relation 14247. Up to 1726 conditions per place. [2024-11-17 03:09:20,472 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 76 selfloop transitions, 27 changer transitions 0/105 dead transitions. [2024-11-17 03:09:20,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 105 transitions, 756 flow [2024-11-17 03:09:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:09:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:09:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-11-17 03:09:20,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2024-11-17 03:09:20,476 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 277 flow. Second operand 7 states and 113 transitions. [2024-11-17 03:09:20,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 105 transitions, 756 flow [2024-11-17 03:09:20,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 105 transitions, 756 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:09:20,495 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 509 flow [2024-11-17 03:09:20,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=509, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2024-11-17 03:09:20,496 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2024-11-17 03:09:20,497 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 509 flow [2024-11-17 03:09:20,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-17 03:09:20,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:20,500 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2024-11-17 03:09:20,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:09:20,501 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:09:20,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:20,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1639153256, now seen corresponding path program 1 times [2024-11-17 03:09:20,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:20,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079636599] [2024-11-17 03:09:20,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:20,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:09:20,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:09:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:09:20,533 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:09:20,534 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:09:20,534 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-17 03:09:20,534 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-17 03:09:20,535 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-17 03:09:20,535 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-17 03:09:20,535 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-17 03:09:20,535 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-17 03:09:20,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:09:20,536 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-17 03:09:20,536 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:09:20,536 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-17 03:09:20,557 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:09:20,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 33 transitions, 94 flow [2024-11-17 03:09:20,579 INFO L124 PetriNetUnfolderBase]: 5/61 cut-off events. [2024-11-17 03:09:20,579 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-17 03:09:20,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 61 events. 5/61 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 59. Up to 10 conditions per place. [2024-11-17 03:09:20,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 33 transitions, 94 flow [2024-11-17 03:09:20,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 33 transitions, 94 flow [2024-11-17 03:09:20,582 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:09:20,582 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;@627ce4c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:09:20,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-17 03:09:20,584 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:09:20,584 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:09:20,584 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:09:20,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:20,584 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:09:20,584 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)] === [2024-11-17 03:09:20,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:20,585 INFO L85 PathProgramCache]: Analyzing trace with hash 6222497, now seen corresponding path program 1 times [2024-11-17 03:09:20,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:20,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615534359] [2024-11-17 03:09:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:20,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:20,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:09:20,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:20,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615534359] [2024-11-17 03:09:20,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615534359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:20,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:20,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:09:20,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867746900] [2024-11-17 03:09:20,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:20,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:09:20,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:20,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:09:20,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:09:20,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-17 03:09:20,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-11-17 03:09:20,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:20,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-17 03:09:20,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:21,428 INFO L124 PetriNetUnfolderBase]: 8555/11904 cut-off events. [2024-11-17 03:09:21,428 INFO L125 PetriNetUnfolderBase]: For 2959/2959 co-relation queries the response was YES. [2024-11-17 03:09:21,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24819 conditions, 11904 events. 8555/11904 cut-off events. For 2959/2959 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 63616 event pairs, 8555 based on Foata normal form. 1555/11489 useless extension candidates. Maximal degree in co-relation 3272. Up to 11666 conditions per place. [2024-11-17 03:09:21,489 INFO L140 encePairwiseOnDemand]: 31/33 looper letters, 26 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2024-11-17 03:09:21,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 136 flow [2024-11-17 03:09:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:09:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:09:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 36 transitions. [2024-11-17 03:09:21,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-17 03:09:21,491 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 94 flow. Second operand 2 states and 36 transitions. [2024-11-17 03:09:21,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 136 flow [2024-11-17 03:09:21,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 130 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-17 03:09:21,495 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 78 flow [2024-11-17 03:09:21,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2024-11-17 03:09:21,496 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2024-11-17 03:09:21,496 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 78 flow [2024-11-17 03:09:21,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-11-17 03:09:21,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:21,497 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:21,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:09:21,497 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:09:21,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:21,498 INFO L85 PathProgramCache]: Analyzing trace with hash 665120681, now seen corresponding path program 1 times [2024-11-17 03:09:21,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:21,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666851752] [2024-11-17 03:09:21,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:21,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:09:21,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666851752] [2024-11-17 03:09:21,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666851752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:21,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:21,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:09:21,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529892307] [2024-11-17 03:09:21,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:21,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:09:21,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:21,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:09:21,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:09:21,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-17 03:09:21,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2024-11-17 03:09:21,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:21,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-17 03:09:21,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:22,808 INFO L124 PetriNetUnfolderBase]: 12243/16984 cut-off events. [2024-11-17 03:09:22,808 INFO L125 PetriNetUnfolderBase]: For 1605/1605 co-relation queries the response was YES. [2024-11-17 03:09:22,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34857 conditions, 16984 events. 12243/16984 cut-off events. For 1605/1605 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 99246 event pairs, 6745 based on Foata normal form. 0/14318 useless extension candidates. Maximal degree in co-relation 34850. Up to 10936 conditions per place. [2024-11-17 03:09:22,914 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 42 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-11-17 03:09:22,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 229 flow [2024-11-17 03:09:22,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:09:22,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:09:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-17 03:09:22,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-17 03:09:22,917 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 78 flow. Second operand 3 states and 60 transitions. [2024-11-17 03:09:22,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 229 flow [2024-11-17 03:09:22,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:09:22,922 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 116 flow [2024-11-17 03:09:22,923 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-11-17 03:09:22,924 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-11-17 03:09:22,924 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 116 flow [2024-11-17 03:09:22,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2024-11-17 03:09:22,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:22,924 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:22,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 03:09:22,925 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:09:22,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:22,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1312427294, now seen corresponding path program 1 times [2024-11-17 03:09:22,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:22,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102737125] [2024-11-17 03:09:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:22,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:09:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:22,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102737125] [2024-11-17 03:09:22,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102737125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:22,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:22,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:09:22,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763740047] [2024-11-17 03:09:22,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:22,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:09:22,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:22,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:09:22,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:09:22,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-17 03:09:22,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-17 03:09:22,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:22,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-17 03:09:22,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:24,669 INFO L124 PetriNetUnfolderBase]: 16953/23601 cut-off events. [2024-11-17 03:09:24,669 INFO L125 PetriNetUnfolderBase]: For 9767/9767 co-relation queries the response was YES. [2024-11-17 03:09:24,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56028 conditions, 23601 events. 16953/23601 cut-off events. For 9767/9767 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 146275 event pairs, 8455 based on Foata normal form. 0/20831 useless extension candidates. Maximal degree in co-relation 56019. Up to 15062 conditions per place. [2024-11-17 03:09:24,969 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 45 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2024-11-17 03:09:24,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 302 flow [2024-11-17 03:09:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:09:24,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:09:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-17 03:09:24,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5959595959595959 [2024-11-17 03:09:24,971 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 116 flow. Second operand 3 states and 59 transitions. [2024-11-17 03:09:24,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 302 flow [2024-11-17 03:09:25,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:09:25,040 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 174 flow [2024-11-17 03:09:25,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2024-11-17 03:09:25,040 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-11-17 03:09:25,041 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 174 flow [2024-11-17 03:09:25,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-17 03:09:25,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:25,041 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:25,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 03:09:25,041 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:09:25,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1824816102, now seen corresponding path program 1 times [2024-11-17 03:09:25,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:25,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779198548] [2024-11-17 03:09:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:25,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:09:25,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:25,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779198548] [2024-11-17 03:09:25,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779198548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:25,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:25,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:09:25,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755769113] [2024-11-17 03:09:25,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:25,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:09:25,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:09:25,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:09:25,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-17 03:09:25,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-17 03:09:25,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:25,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-17 03:09:25,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:27,489 INFO L124 PetriNetUnfolderBase]: 28929/40235 cut-off events. [2024-11-17 03:09:27,489 INFO L125 PetriNetUnfolderBase]: For 25144/25144 co-relation queries the response was YES. [2024-11-17 03:09:27,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105824 conditions, 40235 events. 28929/40235 cut-off events. For 25144/25144 co-relation queries the response was YES. Maximal size of possible extension queue 2218. Compared 274300 event pairs, 3557 based on Foata normal form. 258/35777 useless extension candidates. Maximal degree in co-relation 105814. Up to 12558 conditions per place. [2024-11-17 03:09:27,750 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 99 selfloop transitions, 23 changer transitions 0/124 dead transitions. [2024-11-17 03:09:27,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 124 transitions, 764 flow [2024-11-17 03:09:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:09:27,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:09:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-17 03:09:27,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 03:09:27,753 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 174 flow. Second operand 6 states and 132 transitions. [2024-11-17 03:09:27,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 124 transitions, 764 flow [2024-11-17 03:09:28,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 124 transitions, 720 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:09:28,013 INFO L231 Difference]: Finished difference. Result has 51 places, 55 transitions, 357 flow [2024-11-17 03:09:28,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=51, PETRI_TRANSITIONS=55} [2024-11-17 03:09:28,014 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-11-17 03:09:28,014 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 55 transitions, 357 flow [2024-11-17 03:09:28,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-17 03:09:28,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:28,014 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:28,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 03:09:28,015 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:09:28,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:28,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1477933542, now seen corresponding path program 2 times [2024-11-17 03:09:28,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:28,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714457688] [2024-11-17 03:09:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:28,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:09:28,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:28,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714457688] [2024-11-17 03:09:28,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714457688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:28,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:28,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:09:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363145652] [2024-11-17 03:09:28,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:28,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:09:28,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:09:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:09:28,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-17 03:09:28,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 357 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-17 03:09:28,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:28,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-17 03:09:28,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:30,987 INFO L124 PetriNetUnfolderBase]: 31637/44313 cut-off events. [2024-11-17 03:09:30,987 INFO L125 PetriNetUnfolderBase]: For 51974/51974 co-relation queries the response was YES. [2024-11-17 03:09:31,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130261 conditions, 44313 events. 31637/44313 cut-off events. For 51974/51974 co-relation queries the response was YES. Maximal size of possible extension queue 2513. Compared 311881 event pairs, 2741 based on Foata normal form. 516/40669 useless extension candidates. Maximal degree in co-relation 130247. Up to 13974 conditions per place. [2024-11-17 03:09:31,268 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 112 selfloop transitions, 36 changer transitions 0/150 dead transitions. [2024-11-17 03:09:31,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 150 transitions, 1069 flow [2024-11-17 03:09:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:09:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:09:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-11-17 03:09:31,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645021645021645 [2024-11-17 03:09:31,271 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 357 flow. Second operand 7 states and 149 transitions. [2024-11-17 03:09:31,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 150 transitions, 1069 flow [2024-11-17 03:09:31,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 150 transitions, 1069 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:09:31,685 INFO L231 Difference]: Finished difference. Result has 61 places, 74 transitions, 673 flow [2024-11-17 03:09:31,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=673, PETRI_PLACES=61, PETRI_TRANSITIONS=74} [2024-11-17 03:09:31,686 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-11-17 03:09:31,686 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 74 transitions, 673 flow [2024-11-17 03:09:31,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-17 03:09:31,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:31,687 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:31,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 03:09:31,687 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:09:31,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:31,687 INFO L85 PathProgramCache]: Analyzing trace with hash 672678718, now seen corresponding path program 1 times [2024-11-17 03:09:31,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:31,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133504927] [2024-11-17 03:09:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:31,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 03:09:31,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:31,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133504927] [2024-11-17 03:09:31,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133504927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:31,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:31,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:09:31,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132208520] [2024-11-17 03:09:31,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:31,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:09:31,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:31,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:09:31,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:09:31,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-17 03:09:31,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 74 transitions, 673 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-11-17 03:09:31,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:31,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-17 03:09:31,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:35,841 INFO L124 PetriNetUnfolderBase]: 41715/59374 cut-off events. [2024-11-17 03:09:35,841 INFO L125 PetriNetUnfolderBase]: For 167880/167880 co-relation queries the response was YES. [2024-11-17 03:09:36,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193566 conditions, 59374 events. 41715/59374 cut-off events. For 167880/167880 co-relation queries the response was YES. Maximal size of possible extension queue 3501. Compared 435249 event pairs, 19171 based on Foata normal form. 0/54750 useless extension candidates. Maximal degree in co-relation 193547. Up to 36728 conditions per place. [2024-11-17 03:09:36,320 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 92 selfloop transitions, 34 changer transitions 0/128 dead transitions. [2024-11-17 03:09:36,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 128 transitions, 1417 flow [2024-11-17 03:09:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:09:36,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:09:36,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-11-17 03:09:36,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5858585858585859 [2024-11-17 03:09:36,322 INFO L175 Difference]: Start difference. First operand has 61 places, 74 transitions, 673 flow. Second operand 3 states and 58 transitions. [2024-11-17 03:09:36,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 128 transitions, 1417 flow [2024-11-17 03:09:37,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 128 transitions, 1352 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-11-17 03:09:37,034 INFO L231 Difference]: Finished difference. Result has 64 places, 96 transitions, 1060 flow [2024-11-17 03:09:37,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1060, PETRI_PLACES=64, PETRI_TRANSITIONS=96} [2024-11-17 03:09:37,037 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-11-17 03:09:37,038 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 96 transitions, 1060 flow [2024-11-17 03:09:37,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-11-17 03:09:37,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:37,038 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:37,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 03:09:37,038 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:09:37,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1838145703, now seen corresponding path program 1 times [2024-11-17 03:09:37,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:37,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12660876] [2024-11-17 03:09:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:37,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:09:37,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12660876] [2024-11-17 03:09:37,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12660876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:37,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:37,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:09:37,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671153989] [2024-11-17 03:09:37,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:37,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:09:37,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:37,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:09:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:09:37,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-17 03:09:37,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 96 transitions, 1060 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-17 03:09:37,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:37,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-17 03:09:37,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:44,841 INFO L124 PetriNetUnfolderBase]: 72299/102791 cut-off events. [2024-11-17 03:09:44,841 INFO L125 PetriNetUnfolderBase]: For 336523/336523 co-relation queries the response was YES. [2024-11-17 03:09:45,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361990 conditions, 102791 events. 72299/102791 cut-off events. For 336523/336523 co-relation queries the response was YES. Maximal size of possible extension queue 6458. Compared 815993 event pairs, 11713 based on Foata normal form. 1292/98993 useless extension candidates. Maximal degree in co-relation 361970. Up to 32664 conditions per place. [2024-11-17 03:09:46,068 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 146 selfloop transitions, 87 changer transitions 0/235 dead transitions. [2024-11-17 03:09:46,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 235 transitions, 2793 flow [2024-11-17 03:09:46,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:09:46,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:09:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-11-17 03:09:46,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-17 03:09:46,070 INFO L175 Difference]: Start difference. First operand has 64 places, 96 transitions, 1060 flow. Second operand 6 states and 129 transitions. [2024-11-17 03:09:46,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 235 transitions, 2793 flow [2024-11-17 03:09:50,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 235 transitions, 2649 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:09:50,135 INFO L231 Difference]: Finished difference. Result has 71 places, 157 transitions, 2150 flow [2024-11-17 03:09:50,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2150, PETRI_PLACES=71, PETRI_TRANSITIONS=157} [2024-11-17 03:09:50,135 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-11-17 03:09:50,136 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 157 transitions, 2150 flow [2024-11-17 03:09:50,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-17 03:09:50,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:09:50,136 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:09:50,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-17 03:09:50,136 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:09:50,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:09:50,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2095530935, now seen corresponding path program 2 times [2024-11-17 03:09:50,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:09:50,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138642221] [2024-11-17 03:09:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:09:50,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:09:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:09:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 03:09:50,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:09:50,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138642221] [2024-11-17 03:09:50,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138642221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:09:50,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:09:50,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:09:50,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210575370] [2024-11-17 03:09:50,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:09:50,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:09:50,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:09:50,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:09:50,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:09:50,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-17 03:09:50,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 157 transitions, 2150 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2024-11-17 03:09:50,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:09:50,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-17 03:09:50,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:09:59,916 INFO L124 PetriNetUnfolderBase]: 78247/112163 cut-off events. [2024-11-17 03:09:59,917 INFO L125 PetriNetUnfolderBase]: For 483777/483777 co-relation queries the response was YES. [2024-11-17 03:10:00,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425811 conditions, 112163 events. 78247/112163 cut-off events. For 483777/483777 co-relation queries the response was YES. Maximal size of possible extension queue 7227. Compared 915242 event pairs, 10809 based on Foata normal form. 1292/107659 useless extension candidates. Maximal degree in co-relation 425787. Up to 38966 conditions per place. [2024-11-17 03:10:00,894 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 175 selfloop transitions, 140 changer transitions 0/317 dead transitions. [2024-11-17 03:10:00,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 317 transitions, 4377 flow [2024-11-17 03:10:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:10:00,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:10:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-11-17 03:10:00,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-17 03:10:00,895 INFO L175 Difference]: Start difference. First operand has 71 places, 157 transitions, 2150 flow. Second operand 7 states and 143 transitions. [2024-11-17 03:10:00,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 317 transitions, 4377 flow [2024-11-17 03:10:07,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 317 transitions, 4377 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:10:07,601 INFO L231 Difference]: Finished difference. Result has 81 places, 221 transitions, 3716 flow [2024-11-17 03:10:07,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3716, PETRI_PLACES=81, PETRI_TRANSITIONS=221} [2024-11-17 03:10:07,602 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2024-11-17 03:10:07,603 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 221 transitions, 3716 flow [2024-11-17 03:10:07,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2024-11-17 03:10:07,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:10:07,603 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:10:07,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-17 03:10:07,603 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:10:07,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:10:07,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1985556206, now seen corresponding path program 1 times [2024-11-17 03:10:07,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:10:07,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023222596] [2024-11-17 03:10:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:10:07,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:10:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:10:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:10:07,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:10:07,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023222596] [2024-11-17 03:10:07,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023222596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:10:07,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:10:07,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:10:07,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145980328] [2024-11-17 03:10:07,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:10:07,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:10:07,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:10:07,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:10:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:10:07,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-17 03:10:07,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 221 transitions, 3716 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2024-11-17 03:10:07,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:10:07,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-17 03:10:07,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand