./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/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.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:23:18,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:23:19,031 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:23:19,036 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:23:19,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:23:19,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:23:19,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:23:19,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:23:19,063 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:23:19,064 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:23:19,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:23:19,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:23:19,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:23:19,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:23:19,066 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:23:19,067 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:23:19,067 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:23:19,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:23:19,068 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:23:19,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:23:19,071 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:23:19,071 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:23:19,071 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:23:19,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:23:19,072 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:23:19,072 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:23:19,072 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:23:19,072 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:23:19,073 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:23:19,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:23:19,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:23:19,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:23:19,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:23:19,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:23:19,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:23:19,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:23:19,074 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:23:19,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:23:19,075 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:23:19,075 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:23:19,075 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:23:19,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:23:19,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 [2024-11-19 09:23:19,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:23:19,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:23:19,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:23:19,291 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:23:19,291 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:23:19,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2024-11-19 09:23:20,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:23:20,921 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:23:20,923 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/45_monabsex1_vs.i [2024-11-19 09:23:20,939 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08140b42b/592572b1d60f47fe86b92f70ec2c5b18/FLAG542942d7c [2024-11-19 09:23:20,952 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08140b42b/592572b1d60f47fe86b92f70ec2c5b18 [2024-11-19 09:23:20,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:23:20,955 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:23:20,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:23:20,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:23:20,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:23:20,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:23:20" (1/1) ... [2024-11-19 09:23:20,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e57ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:20, skipping insertion in model container [2024-11-19 09:23:20,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:23:20" (1/1) ... [2024-11-19 09:23:21,004 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:23:21,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:23:21,358 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:23:21,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:23:21,442 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:23:21,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21 WrapperNode [2024-11-19 09:23:21,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:23:21,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:23:21,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:23:21,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:23:21,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (1/1) ... [2024-11-19 09:23:21,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (1/1) ... [2024-11-19 09:23:21,470 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2024-11-19 09:23:21,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:23:21,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:23:21,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:23:21,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:23:21,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (1/1) ... [2024-11-19 09:23:21,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (1/1) ... [2024-11-19 09:23:21,480 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (1/1) ... [2024-11-19 09:23:21,488 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 09:23:21,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (1/1) ... [2024-11-19 09:23:21,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (1/1) ... [2024-11-19 09:23:21,494 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (1/1) ... [2024-11-19 09:23:21,496 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (1/1) ... [2024-11-19 09:23:21,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (1/1) ... [2024-11-19 09:23:21,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (1/1) ... [2024-11-19 09:23:21,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:23:21,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:23:21,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:23:21,499 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:23:21,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (1/1) ... [2024-11-19 09:23:21,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:23:21,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:23:21,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:23:21,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:23:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-19 09:23:21,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-19 09:23:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:23:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:23:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:23:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:23:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:23:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:23:21,590 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:23:21,719 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:23:21,721 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:23:21,860 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:23:21,860 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:23:21,968 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:23:21,968 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 09:23:21,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:23:21 BoogieIcfgContainer [2024-11-19 09:23:21,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:23:21,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:23:21,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:23:21,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:23:21,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:23:20" (1/3) ... [2024-11-19 09:23:21,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca8f2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:23:21, skipping insertion in model container [2024-11-19 09:23:21,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:23:21" (2/3) ... [2024-11-19 09:23:21,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca8f2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:23:21, skipping insertion in model container [2024-11-19 09:23:21,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:23:21" (3/3) ... [2024-11-19 09:23:21,983 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2024-11-19 09:23:22,006 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:23:22,007 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:23:22,007 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:23:22,036 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:23:22,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 15 places, 12 transitions, 28 flow [2024-11-19 09:23:22,082 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2024-11-19 09:23:22,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:22,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-19 09:23:22,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 15 places, 12 transitions, 28 flow [2024-11-19 09:23:22,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 15 places, 12 transitions, 28 flow [2024-11-19 09:23:22,100 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:23:22,107 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;@5dca48ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:23:22,107 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:23:22,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:23:22,112 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:23:22,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:22,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:22,113 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:23:22,113 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:23:22,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:22,117 INFO L85 PathProgramCache]: Analyzing trace with hash 140143, now seen corresponding path program 1 times [2024-11-19 09:23:22,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:22,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491088962] [2024-11-19 09:23:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:22,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:22,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:22,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491088962] [2024-11-19 09:23:22,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491088962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:22,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:22,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:22,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604329496] [2024-11-19 09:23:22,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:22,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:23:22,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:22,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:23:22,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:23:22,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 12 [2024-11-19 09:23:22,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 28 flow. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:22,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:22,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 12 [2024-11-19 09:23:22,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:22,316 INFO L124 PetriNetUnfolderBase]: 4/19 cut-off events. [2024-11-19 09:23:22,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:22,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 19 events. 4/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 28. Up to 17 conditions per place. [2024-11-19 09:23:22,321 INFO L140 encePairwiseOnDemand]: 11/12 looper letters, 7 selfloop transitions, 0 changer transitions 0/9 dead transitions. [2024-11-19 09:23:22,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 9 transitions, 36 flow [2024-11-19 09:23:22,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:23:22,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:23:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 14 transitions. [2024-11-19 09:23:22,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-19 09:23:22,332 INFO L175 Difference]: Start difference. First operand has 15 places, 12 transitions, 28 flow. Second operand 2 states and 14 transitions. [2024-11-19 09:23:22,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 9 transitions, 36 flow [2024-11-19 09:23:22,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 9 transitions, 36 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:22,336 INFO L231 Difference]: Finished difference. Result has 13 places, 9 transitions, 22 flow [2024-11-19 09:23:22,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=12, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=22, PETRI_PLACES=13, PETRI_TRANSITIONS=9} [2024-11-19 09:23:22,340 INFO L277 CegarLoopForPetriNet]: 15 programPoint places, -2 predicate places. [2024-11-19 09:23:22,342 INFO L471 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 22 flow [2024-11-19 09:23:22,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:22,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:22,342 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-19 09:23:22,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:23:22,343 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:23:22,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:22,345 INFO L85 PathProgramCache]: Analyzing trace with hash 134658977, now seen corresponding path program 1 times [2024-11-19 09:23:22,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:22,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961662768] [2024-11-19 09:23:22,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:22,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:22,371 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:23:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:22,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:23:22,419 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:23:22,424 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-19 09:23:22,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-19 09:23:22,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-19 09:23:22,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-19 09:23:22,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:23:22,427 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 09:23:22,430 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:23:22,430 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 09:23:22,450 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:23:22,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 46 flow [2024-11-19 09:23:22,470 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2024-11-19 09:23:22,498 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:23:22,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 26 events. 0/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 69 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2024-11-19 09:23:22,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 46 flow [2024-11-19 09:23:22,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 18 transitions, 46 flow [2024-11-19 09:23:22,503 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:23:22,504 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;@5dca48ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:23:22,507 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 09:23:22,512 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:23:22,512 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:23:22,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:22,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:22,512 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:23:22,513 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:23:22,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:22,517 INFO L85 PathProgramCache]: Analyzing trace with hash 158017, now seen corresponding path program 1 times [2024-11-19 09:23:22,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:22,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620682896] [2024-11-19 09:23:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:22,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:22,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620682896] [2024-11-19 09:23:22,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620682896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:22,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:22,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:22,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588610891] [2024-11-19 09:23:22,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:22,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:23:22,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:22,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:23:22,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:23:22,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 18 [2024-11-19 09:23:22,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 46 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) [2024-11-19 09:23:22,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:22,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 18 [2024-11-19 09:23:22,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:22,600 INFO L124 PetriNetUnfolderBase]: 64/140 cut-off events. [2024-11-19 09:23:22,600 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-19 09:23:22,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 140 events. 64/140 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 549 event pairs, 64 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 74. Up to 127 conditions per place. [2024-11-19 09:23:22,602 INFO L140 encePairwiseOnDemand]: 17/18 looper letters, 12 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2024-11-19 09:23:22,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 64 flow [2024-11-19 09:23:22,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:23:22,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:23:22,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 21 transitions. [2024-11-19 09:23:22,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-19 09:23:22,604 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 46 flow. Second operand 2 states and 21 transitions. [2024-11-19 09:23:22,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 64 flow [2024-11-19 09:23:22,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:22,605 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 40 flow [2024-11-19 09:23:22,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2024-11-19 09:23:22,605 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, -2 predicate places. [2024-11-19 09:23:22,606 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 40 flow [2024-11-19 09:23:22,606 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) [2024-11-19 09:23:22,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:22,606 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:23:22,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:23:22,606 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:23:22,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:22,607 INFO L85 PathProgramCache]: Analyzing trace with hash 412120959, now seen corresponding path program 1 times [2024-11-19 09:23:22,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:22,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272185683] [2024-11-19 09:23:22,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:22,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:22,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:22,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272185683] [2024-11-19 09:23:22,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272185683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:22,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:22,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:22,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003983990] [2024-11-19 09:23:22,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:22,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:22,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:22,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:22,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:22,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 18 [2024-11-19 09:23:22,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:22,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:22,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 18 [2024-11-19 09:23:22,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:22,718 INFO L124 PetriNetUnfolderBase]: 109/215 cut-off events. [2024-11-19 09:23:22,718 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-19 09:23:22,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 215 events. 109/215 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 792 event pairs, 45 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 445. Up to 116 conditions per place. [2024-11-19 09:23:22,721 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 20 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2024-11-19 09:23:22,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 24 transitions, 109 flow [2024-11-19 09:23:22,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2024-11-19 09:23:22,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-19 09:23:22,724 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 40 flow. Second operand 3 states and 30 transitions. [2024-11-19 09:23:22,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 24 transitions, 109 flow [2024-11-19 09:23:22,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 24 transitions, 109 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:22,728 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 62 flow [2024-11-19 09:23:22,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2024-11-19 09:23:22,729 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2024-11-19 09:23:22,729 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 62 flow [2024-11-19 09:23:22,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:22,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:22,729 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2024-11-19 09:23:22,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:23:22,730 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:23:22,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:22,730 INFO L85 PathProgramCache]: Analyzing trace with hash -109414707, now seen corresponding path program 1 times [2024-11-19 09:23:22,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:22,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288882810] [2024-11-19 09:23:22,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:22,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:22,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:23:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:22,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:23:22,770 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:23:22,770 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-19 09:23:22,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-19 09:23:22,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-19 09:23:22,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-19 09:23:22,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-19 09:23:22,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:23:22,771 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-19 09:23:22,775 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:23:22,775 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 09:23:22,792 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:23:22,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 24 transitions, 66 flow [2024-11-19 09:23:22,803 INFO L124 PetriNetUnfolderBase]: 0/36 cut-off events. [2024-11-19 09:23:22,803 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 09:23:22,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 0/36 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2024-11-19 09:23:22,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 24 transitions, 66 flow [2024-11-19 09:23:22,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 66 flow [2024-11-19 09:23:22,805 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:23:22,806 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;@5dca48ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:23:22,808 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 09:23:22,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:23:22,809 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:23:22,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:22,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:22,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:23:22,810 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:23:22,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:22,810 INFO L85 PathProgramCache]: Analyzing trace with hash 181849, now seen corresponding path program 1 times [2024-11-19 09:23:22,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:22,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921472221] [2024-11-19 09:23:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:22,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:22,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:22,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921472221] [2024-11-19 09:23:22,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921472221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:22,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:22,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:22,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890188899] [2024-11-19 09:23:22,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:22,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:23:22,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:22,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:23:22,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:23:22,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-19 09:23:22,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 66 flow. Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:22,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:22,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-19 09:23:22,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:22,952 INFO L124 PetriNetUnfolderBase]: 564/942 cut-off events. [2024-11-19 09:23:22,954 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-11-19 09:23:22,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1940 conditions, 942 events. 564/942 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4912 event pairs, 564 based on Foata normal form. 0/765 useless extension candidates. Maximal degree in co-relation 287. Up to 877 conditions per place. [2024-11-19 09:23:22,965 INFO L140 encePairwiseOnDemand]: 23/24 looper letters, 17 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2024-11-19 09:23:22,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 94 flow [2024-11-19 09:23:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:23:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:23:22,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 28 transitions. [2024-11-19 09:23:22,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-19 09:23:22,968 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 66 flow. Second operand 2 states and 28 transitions. [2024-11-19 09:23:22,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 94 flow [2024-11-19 09:23:22,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 92 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:22,971 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 58 flow [2024-11-19 09:23:22,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2024-11-19 09:23:22,972 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2024-11-19 09:23:22,972 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 58 flow [2024-11-19 09:23:22,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:22,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:22,972 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:23:22,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:23:22,972 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:23:22,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:22,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1122272858, now seen corresponding path program 1 times [2024-11-19 09:23:22,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:22,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573173764] [2024-11-19 09:23:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:22,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:23,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:23,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573173764] [2024-11-19 09:23:23,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573173764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:23,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:23,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:23,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487791666] [2024-11-19 09:23:23,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:23,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:23,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:23,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:23,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:23,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 24 [2024-11-19 09:23:23,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:23,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:23,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 24 [2024-11-19 09:23:23,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:23,190 INFO L124 PetriNetUnfolderBase]: 1343/2070 cut-off events. [2024-11-19 09:23:23,191 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-19 09:23:23,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4294 conditions, 2070 events. 1343/2070 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10029 event pairs, 681 based on Foata normal form. 0/1764 useless extension candidates. Maximal degree in co-relation 4288. Up to 1272 conditions per place. [2024-11-19 09:23:23,203 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 31 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-11-19 09:23:23,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 168 flow [2024-11-19 09:23:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-11-19 09:23:23,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-19 09:23:23,205 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 58 flow. Second operand 3 states and 42 transitions. [2024-11-19 09:23:23,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 168 flow [2024-11-19 09:23:23,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:23,208 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 88 flow [2024-11-19 09:23:23,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2024-11-19 09:23:23,209 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-11-19 09:23:23,209 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 88 flow [2024-11-19 09:23:23,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:23,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:23,210 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:23,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:23:23,210 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:23:23,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:23,210 INFO L85 PathProgramCache]: Analyzing trace with hash 459449610, now seen corresponding path program 1 times [2024-11-19 09:23:23,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:23,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039298253] [2024-11-19 09:23:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:23,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:23:23,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:23,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039298253] [2024-11-19 09:23:23,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039298253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:23,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:23,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:23,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877918861] [2024-11-19 09:23:23,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:23,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:23,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:23,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:23,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 24 [2024-11-19 09:23:23,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:23,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:23,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 24 [2024-11-19 09:23:23,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:23,484 INFO L124 PetriNetUnfolderBase]: 1689/2637 cut-off events. [2024-11-19 09:23:23,485 INFO L125 PetriNetUnfolderBase]: For 1047/1047 co-relation queries the response was YES. [2024-11-19 09:23:23,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6319 conditions, 2637 events. 1689/2637 cut-off events. For 1047/1047 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13553 event pairs, 787 based on Foata normal form. 0/2387 useless extension candidates. Maximal degree in co-relation 6311. Up to 1546 conditions per place. [2024-11-19 09:23:23,497 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 33 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-11-19 09:23:23,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 221 flow [2024-11-19 09:23:23,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:23,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2024-11-19 09:23:23,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-11-19 09:23:23,498 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 88 flow. Second operand 3 states and 41 transitions. [2024-11-19 09:23:23,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 221 flow [2024-11-19 09:23:23,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:23:23,502 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 128 flow [2024-11-19 09:23:23,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-11-19 09:23:23,503 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-11-19 09:23:23,503 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 128 flow [2024-11-19 09:23:23,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:23,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:23,503 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2024-11-19 09:23:23,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:23:23,503 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-19 09:23:23,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:23,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1357625354, now seen corresponding path program 1 times [2024-11-19 09:23:23,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:23,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717986868] [2024-11-19 09:23:23,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:23,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:23,511 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:23:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:23,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:23:23,518 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:23:23,518 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-19 09:23:23,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-19 09:23:23,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-19 09:23:23,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-19 09:23:23,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-19 09:23:23,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-19 09:23:23,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:23:23,519 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-19 09:23:23,520 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:23:23,520 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 09:23:23,534 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:23:23,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 30 transitions, 88 flow [2024-11-19 09:23:23,538 INFO L124 PetriNetUnfolderBase]: 0/46 cut-off events. [2024-11-19 09:23:23,538 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 09:23:23,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 46 events. 0/46 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2024-11-19 09:23:23,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 30 transitions, 88 flow [2024-11-19 09:23:23,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 30 transitions, 88 flow [2024-11-19 09:23:23,539 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:23:23,540 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;@5dca48ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:23:23,540 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-19 09:23:23,540 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:23:23,540 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:23:23,541 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:23,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:23,541 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:23:23,541 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:23:23,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:23,541 INFO L85 PathProgramCache]: Analyzing trace with hash 211639, now seen corresponding path program 1 times [2024-11-19 09:23:23,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:23,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823226043] [2024-11-19 09:23:23,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:23,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:23,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:23,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823226043] [2024-11-19 09:23:23,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823226043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:23,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:23,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:23,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235742291] [2024-11-19 09:23:23,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:23,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:23:23,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:23,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:23:23,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:23:23,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-11-19 09:23:23,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:23,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:23,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-11-19 09:23:23,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:23,894 INFO L124 PetriNetUnfolderBase]: 4064/5956 cut-off events. [2024-11-19 09:23:23,894 INFO L125 PetriNetUnfolderBase]: For 1817/1817 co-relation queries the response was YES. [2024-11-19 09:23:23,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12330 conditions, 5956 events. 4064/5956 cut-off events. For 1817/1817 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 34997 event pairs, 4064 based on Foata normal form. 0/4759 useless extension candidates. Maximal degree in co-relation 1964. Up to 5627 conditions per place. [2024-11-19 09:23:23,924 INFO L140 encePairwiseOnDemand]: 29/30 looper letters, 22 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2024-11-19 09:23:23,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 126 flow [2024-11-19 09:23:23,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:23:23,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:23:23,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2024-11-19 09:23:23,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-19 09:23:23,927 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 88 flow. Second operand 2 states and 35 transitions. [2024-11-19 09:23:23,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 126 flow [2024-11-19 09:23:23,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 27 transitions, 120 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:23,930 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 76 flow [2024-11-19 09:23:23,930 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2024-11-19 09:23:23,931 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2024-11-19 09:23:23,932 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 76 flow [2024-11-19 09:23:23,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:23,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:23,932 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:23:23,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:23:23,933 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:23:23,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:23,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2009930458, now seen corresponding path program 1 times [2024-11-19 09:23:23,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:23,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943654914] [2024-11-19 09:23:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:23,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:23,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:23,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943654914] [2024-11-19 09:23:23,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943654914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:23,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:23,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:23,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137823341] [2024-11-19 09:23:23,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:23,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:23,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:23,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:23,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 30 [2024-11-19 09:23:23,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:23,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:23,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 30 [2024-11-19 09:23:23,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:25,144 INFO L124 PetriNetUnfolderBase]: 12243/16840 cut-off events. [2024-11-19 09:23:25,145 INFO L125 PetriNetUnfolderBase]: For 1375/1375 co-relation queries the response was YES. [2024-11-19 09:23:25,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34713 conditions, 16840 events. 12243/16840 cut-off events. For 1375/1375 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 90139 event pairs, 6745 based on Foata normal form. 0/14174 useless extension candidates. Maximal degree in co-relation 34706. Up to 10936 conditions per place. [2024-11-19 09:23:25,236 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 42 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2024-11-19 09:23:25,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 227 flow [2024-11-19 09:23:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:25,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-11-19 09:23:25,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-19 09:23:25,240 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 76 flow. Second operand 3 states and 54 transitions. [2024-11-19 09:23:25,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 227 flow [2024-11-19 09:23:25,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 227 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:25,243 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 114 flow [2024-11-19 09:23:25,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-11-19 09:23:25,245 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2024-11-19 09:23:25,245 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 114 flow [2024-11-19 09:23:25,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:25,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:25,246 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:25,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:23:25,246 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:23:25,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1204705179, now seen corresponding path program 1 times [2024-11-19 09:23:25,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:25,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782729549] [2024-11-19 09:23:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:25,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:23:25,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:25,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782729549] [2024-11-19 09:23:25,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782729549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:25,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:25,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:25,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126357280] [2024-11-19 09:23:25,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:25,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:25,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:25,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:25,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:25,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 30 [2024-11-19 09:23:25,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:25,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:25,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 30 [2024-11-19 09:23:25,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:26,839 INFO L124 PetriNetUnfolderBase]: 16953/23450 cut-off events. [2024-11-19 09:23:26,840 INFO L125 PetriNetUnfolderBase]: For 9851/9851 co-relation queries the response was YES. [2024-11-19 09:23:26,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55877 conditions, 23450 events. 16953/23450 cut-off events. For 9851/9851 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 133519 event pairs, 8455 based on Foata normal form. 0/20680 useless extension candidates. Maximal degree in co-relation 55868. Up to 15062 conditions per place. [2024-11-19 09:23:26,964 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 45 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2024-11-19 09:23:26,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 300 flow [2024-11-19 09:23:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:26,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-11-19 09:23:26,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-11-19 09:23:26,970 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 114 flow. Second operand 3 states and 53 transitions. [2024-11-19 09:23:26,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 300 flow [2024-11-19 09:23:27,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:23:27,016 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 172 flow [2024-11-19 09:23:27,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-11-19 09:23:27,016 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-11-19 09:23:27,017 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 172 flow [2024-11-19 09:23:27,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:27,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:27,017 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:27,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:23:27,018 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:23:27,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:27,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1902144315, now seen corresponding path program 1 times [2024-11-19 09:23:27,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:27,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608124521] [2024-11-19 09:23:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:27,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 09:23:27,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:27,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608124521] [2024-11-19 09:23:27,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608124521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:27,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:27,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:27,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066747097] [2024-11-19 09:23:27,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:27,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:27,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:27,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:27,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:27,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 30 [2024-11-19 09:23:27,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:27,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:27,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 30 [2024-11-19 09:23:27,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:28,846 INFO L124 PetriNetUnfolderBase]: 22305/31049 cut-off events. [2024-11-19 09:23:28,847 INFO L125 PetriNetUnfolderBase]: For 20707/20707 co-relation queries the response was YES. [2024-11-19 09:23:28,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79821 conditions, 31049 events. 22305/31049 cut-off events. For 20707/20707 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 185298 event pairs, 10801 based on Foata normal form. 0/27827 useless extension candidates. Maximal degree in co-relation 79811. Up to 19502 conditions per place. [2024-11-19 09:23:29,016 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 49 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-11-19 09:23:29,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 63 transitions, 409 flow [2024-11-19 09:23:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:29,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-19 09:23:29,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-11-19 09:23:29,018 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 172 flow. Second operand 3 states and 52 transitions. [2024-11-19 09:23:29,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 63 transitions, 409 flow [2024-11-19 09:23:29,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 381 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:23:29,075 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 278 flow [2024-11-19 09:23:29,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-11-19 09:23:29,076 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-11-19 09:23:29,076 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 278 flow [2024-11-19 09:23:29,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:29,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:29,076 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:29,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:23:29,077 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:23:29,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:29,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1582263447, now seen corresponding path program 1 times [2024-11-19 09:23:29,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:29,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130237086] [2024-11-19 09:23:29,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:29,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:23:29,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:29,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130237086] [2024-11-19 09:23:29,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130237086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:29,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:29,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:23:29,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214082195] [2024-11-19 09:23:29,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:29,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:23:29,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:29,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:23:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:23:29,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 30 [2024-11-19 09:23:29,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2024-11-19 09:23:29,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:29,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 30 [2024-11-19 09:23:29,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:32,448 INFO L124 PetriNetUnfolderBase]: 38199/53543 cut-off events. [2024-11-19 09:23:32,448 INFO L125 PetriNetUnfolderBase]: For 51743/51743 co-relation queries the response was YES. [2024-11-19 09:23:32,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150160 conditions, 53543 events. 38199/53543 cut-off events. For 51743/51743 co-relation queries the response was YES. Maximal size of possible extension queue 2350. Compared 356782 event pairs, 6385 based on Foata normal form. 0/48341 useless extension candidates. Maximal degree in co-relation 150149. Up to 16776 conditions per place. [2024-11-19 09:23:32,800 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 113 selfloop transitions, 33 changer transitions 0/147 dead transitions. [2024-11-19 09:23:32,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 147 transitions, 1084 flow [2024-11-19 09:23:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:23:32,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:23:32,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-11-19 09:23:32,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 09:23:32,805 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 278 flow. Second operand 6 states and 120 transitions. [2024-11-19 09:23:32,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 147 transitions, 1084 flow [2024-11-19 09:23:32,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 147 transitions, 1016 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:23:32,992 INFO L231 Difference]: Finished difference. Result has 52 places, 70 transitions, 575 flow [2024-11-19 09:23:32,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=575, PETRI_PLACES=52, PETRI_TRANSITIONS=70} [2024-11-19 09:23:32,992 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-11-19 09:23:32,993 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 70 transitions, 575 flow [2024-11-19 09:23:32,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2024-11-19 09:23:32,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:32,993 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:32,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:23:32,993 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:23:32,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:32,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1919314977, now seen corresponding path program 2 times [2024-11-19 09:23:32,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:32,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173667084] [2024-11-19 09:23:32,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:23:32,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:33,002 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:23:33,002 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:23:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:23:33,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:33,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173667084] [2024-11-19 09:23:33,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173667084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:33,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:33,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:23:33,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263555362] [2024-11-19 09:23:33,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:33,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:23:33,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:33,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:23:33,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:23:33,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 30 [2024-11-19 09:23:33,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 70 transitions, 575 flow. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2024-11-19 09:23:33,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:33,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 30 [2024-11-19 09:23:33,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:37,074 INFO L124 PetriNetUnfolderBase]: 41715/58936 cut-off events. [2024-11-19 09:23:37,075 INFO L125 PetriNetUnfolderBase]: For 95225/95225 co-relation queries the response was YES. [2024-11-19 09:23:37,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183312 conditions, 58936 events. 41715/58936 cut-off events. For 95225/95225 co-relation queries the response was YES. Maximal size of possible extension queue 2587. Compared 404898 event pairs, 5243 based on Foata normal form. 740/55052 useless extension candidates. Maximal degree in co-relation 183297. Up to 19534 conditions per place. [2024-11-19 09:23:37,838 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 128 selfloop transitions, 50 changer transitions 0/179 dead transitions. [2024-11-19 09:23:37,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 179 transitions, 1515 flow [2024-11-19 09:23:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:23:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:23:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-11-19 09:23:37,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-19 09:23:37,839 INFO L175 Difference]: Start difference. First operand has 52 places, 70 transitions, 575 flow. Second operand 7 states and 135 transitions. [2024-11-19 09:23:37,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 179 transitions, 1515 flow [2024-11-19 09:23:38,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 179 transitions, 1515 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:38,139 INFO L231 Difference]: Finished difference. Result has 62 places, 95 transitions, 1039 flow [2024-11-19 09:23:38,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1039, PETRI_PLACES=62, PETRI_TRANSITIONS=95} [2024-11-19 09:23:38,140 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 23 predicate places. [2024-11-19 09:23:38,140 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 95 transitions, 1039 flow [2024-11-19 09:23:38,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2024-11-19 09:23:38,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:38,140 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:38,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:23:38,141 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 09:23:38,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:38,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1163165416, now seen corresponding path program 1 times [2024-11-19 09:23:38,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:38,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019717449] [2024-11-19 09:23:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:38,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:38,148 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:23:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:23:38,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:23:38,155 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:23:38,155 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-19 09:23:38,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-19 09:23:38,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-19 09:23:38,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-19 09:23:38,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-19 09:23:38,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-19 09:23:38,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-19 09:23:38,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 09:23:38,157 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-11-19 09:23:38,157 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:23:38,157 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-19 09:23:38,175 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:23:38,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 36 transitions, 112 flow [2024-11-19 09:23:38,185 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2024-11-19 09:23:38,185 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-19 09:23:38,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 56 events. 0/56 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2024-11-19 09:23:38,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 36 transitions, 112 flow [2024-11-19 09:23:38,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 36 transitions, 112 flow [2024-11-19 09:23:38,188 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:23:38,189 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;@5dca48ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:23:38,189 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-19 09:23:38,190 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:23:38,190 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:23:38,190 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:23:38,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:38,190 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:23:38,190 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:23:38,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:38,191 INFO L85 PathProgramCache]: Analyzing trace with hash 247387, now seen corresponding path program 1 times [2024-11-19 09:23:38,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:38,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441868859] [2024-11-19 09:23:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:38,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:38,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:38,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441868859] [2024-11-19 09:23:38,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441868859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:38,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:38,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:38,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890036023] [2024-11-19 09:23:38,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:38,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:23:38,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:38,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:23:38,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:23:38,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-11-19 09:23:38,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 112 flow. Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:38,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:38,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-11-19 09:23:38,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:40,289 INFO L124 PetriNetUnfolderBase]: 26564/36026 cut-off events. [2024-11-19 09:23:40,289 INFO L125 PetriNetUnfolderBase]: For 14312/14312 co-relation queries the response was YES. [2024-11-19 09:23:40,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74901 conditions, 36026 events. 26564/36026 cut-off events. For 14312/14312 co-relation queries the response was YES. Maximal size of possible extension queue 1834. Compared 226782 event pairs, 26564 based on Foata normal form. 0/28479 useless extension candidates. Maximal degree in co-relation 12478. Up to 34377 conditions per place. [2024-11-19 09:23:40,563 INFO L140 encePairwiseOnDemand]: 35/36 looper letters, 27 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2024-11-19 09:23:40,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 160 flow [2024-11-19 09:23:40,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:23:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:23:40,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions. [2024-11-19 09:23:40,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-19 09:23:40,566 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 112 flow. Second operand 2 states and 42 transitions. [2024-11-19 09:23:40,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 160 flow [2024-11-19 09:23:40,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 33 transitions, 148 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:40,572 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 94 flow [2024-11-19 09:23:40,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2024-11-19 09:23:40,573 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2024-11-19 09:23:40,573 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 94 flow [2024-11-19 09:23:40,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:40,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:40,573 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:23:40,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 09:23:40,573 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:23:40,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:40,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1219888432, now seen corresponding path program 1 times [2024-11-19 09:23:40,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:40,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922940] [2024-11-19 09:23:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:40,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:23:40,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:40,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922940] [2024-11-19 09:23:40,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:40,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:40,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:40,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459292597] [2024-11-19 09:23:40,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:40,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:40,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:40,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:40,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:40,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 36 [2024-11-19 09:23:40,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:40,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:40,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 36 [2024-11-19 09:23:40,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:47,243 INFO L124 PetriNetUnfolderBase]: 97851/126043 cut-off events. [2024-11-19 09:23:47,244 INFO L125 PetriNetUnfolderBase]: For 11167/11167 co-relation queries the response was YES. [2024-11-19 09:23:47,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258461 conditions, 126043 events. 97851/126043 cut-off events. For 11167/11167 co-relation queries the response was YES. Maximal size of possible extension queue 3452. Compared 716049 event pairs, 56393 based on Foata normal form. 0/105265 useless extension candidates. Maximal degree in co-relation 258453. Up to 84136 conditions per place. [2024-11-19 09:23:48,247 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 53 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-11-19 09:23:48,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 286 flow [2024-11-19 09:23:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:48,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-19 09:23:48,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-19 09:23:48,248 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 94 flow. Second operand 3 states and 66 transitions. [2024-11-19 09:23:48,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 286 flow [2024-11-19 09:23:48,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:23:48,260 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 140 flow [2024-11-19 09:23:48,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-11-19 09:23:48,261 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-19 09:23:48,261 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 140 flow [2024-11-19 09:23:48,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:48,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:23:48,262 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 09:23:48,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 09:23:48,262 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-19 09:23:48,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:23:48,262 INFO L85 PathProgramCache]: Analyzing trace with hash 205603116, now seen corresponding path program 1 times [2024-11-19 09:23:48,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:23:48,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313384564] [2024-11-19 09:23:48,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:23:48,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:23:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:23:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:23:48,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:23:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313384564] [2024-11-19 09:23:48,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313384564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:23:48,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:23:48,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:23:48,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015315166] [2024-11-19 09:23:48,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:23:48,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:23:48,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:23:48,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:23:48,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:23:48,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 36 [2024-11-19 09:23:48,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:23:48,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:23:48,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 36 [2024-11-19 09:23:48,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:23:58,842 INFO L124 PetriNetUnfolderBase]: 140281/181269 cut-off events. [2024-11-19 09:23:58,842 INFO L125 PetriNetUnfolderBase]: For 76649/76649 co-relation queries the response was YES. [2024-11-19 09:23:59,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429057 conditions, 181269 events. 140281/181269 cut-off events. For 76649/76649 co-relation queries the response was YES. Maximal size of possible extension queue 5212. Compared 1083778 event pairs, 73535 based on Foata normal form. 0/157427 useless extension candidates. Maximal degree in co-relation 429047. Up to 121118 conditions per place. [2024-11-19 09:23:59,900 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 57 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-11-19 09:23:59,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 68 transitions, 379 flow [2024-11-19 09:23:59,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:23:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:23:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-19 09:23:59,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2024-11-19 09:23:59,902 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 140 flow. Second operand 3 states and 65 transitions. [2024-11-19 09:23:59,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 68 transitions, 379 flow