./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-100.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-theta/unwind3-100.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 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:55:44,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:55:44,278 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:55:44,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:55:44,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:55:44,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:55:44,311 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:55:44,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:55:44,312 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:55:44,312 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:55:44,312 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:55:44,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:55:44,313 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:55:44,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:55:44,314 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:55:44,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:55:44,316 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:55:44,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:55:44,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:55:44,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:55:44,317 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:55:44,321 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:55:44,322 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:55:44,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:55:44,322 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:55:44,322 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:55:44,323 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:55:44,323 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:55:44,323 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:55:44,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:55:44,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:55:44,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:55:44,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:55:44,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:55:44,324 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:55:44,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:55:44,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:55:44,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:55:44,325 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:55:44,326 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:55:44,326 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:55:44,326 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:55:44,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 [2024-11-22 21:55:44,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:55:44,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:55:44,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:55:44,607 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:55:44,607 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:55:44,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-100.i [2024-11-22 21:55:45,981 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:55:46,303 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:55:46,304 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-100.i [2024-11-22 21:55:46,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86fa311a8/8abf2bfe27a44a08bd8f13a8a4a7c3ed/FLAGb76cc7884 [2024-11-22 21:55:46,370 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86fa311a8/8abf2bfe27a44a08bd8f13a8a4a7c3ed [2024-11-22 21:55:46,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:55:46,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:55:46,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:55:46,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:55:46,387 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:55:46,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b2de8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46, skipping insertion in model container [2024-11-22 21:55:46,390 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,440 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:55:46,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:55:46,807 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:55:46,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:55:46,901 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:55:46,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46 WrapperNode [2024-11-22 21:55:46,902 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:55:46,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:55:46,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:55:46,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:55:46,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,947 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-11-22 21:55:46,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:55:46,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:55:46,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:55:46,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:55:46,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,966 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,978 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]. [2024-11-22 21:55:46,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:46,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:55:46,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:55:46,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:55:46,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:55:46,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (1/1) ... [2024-11-22 21:55:47,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:55:47,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:55:47,032 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) [2024-11-22 21:55:47,035 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 [2024-11-22 21:55:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:55:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-22 21:55:47,074 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-22 21:55:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-22 21:55:47,074 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-22 21:55:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:55:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:55:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:55:47,077 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:55:47,189 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:55:47,192 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:55:47,319 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:55:47,319 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:55:47,413 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:55:47,413 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 21:55:47,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:55:47 BoogieIcfgContainer [2024-11-22 21:55:47,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:55:47,416 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:55:47,417 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:55:47,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:55:47,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:55:46" (1/3) ... [2024-11-22 21:55:47,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ee501a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:55:47, skipping insertion in model container [2024-11-22 21:55:47,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:55:46" (2/3) ... [2024-11-22 21:55:47,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ee501a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:55:47, skipping insertion in model container [2024-11-22 21:55:47,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:55:47" (3/3) ... [2024-11-22 21:55:47,423 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind3-100.i [2024-11-22 21:55:47,436 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:55:47,437 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 21:55:47,437 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:55:47,478 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:55:47,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2024-11-22 21:55:47,550 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2024-11-22 21:55:47,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:55:47,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 43 events. 6/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 102 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2024-11-22 21:55:47,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2024-11-22 21:55:47,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 59 flow [2024-11-22 21:55:47,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:55:47,578 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;@5fa92678, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:55:47,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-22 21:55:47,585 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:55:47,585 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-22 21:55:47,585 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:55:47,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:47,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:47,586 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-22 21:55:47,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:47,593 INFO L85 PathProgramCache]: Analyzing trace with hash -242791537, now seen corresponding path program 1 times [2024-11-22 21:55:47,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:47,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046668087] [2024-11-22 21:55:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:47,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:55:47,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:47,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046668087] [2024-11-22 21:55:47,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046668087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:47,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:47,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:55:47,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258313149] [2024-11-22 21:55:47,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:47,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:55:47,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:55:47,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:55:47,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-22 21:55:47,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-22 21:55:47,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:47,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-22 21:55:47,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:48,051 INFO L124 PetriNetUnfolderBase]: 69/163 cut-off events. [2024-11-22 21:55:48,052 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:55:48,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 163 events. 69/163 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 609 event pairs, 41 based on Foata normal form. 18/166 useless extension candidates. Maximal degree in co-relation 287. Up to 124 conditions per place. [2024-11-22 21:55:48,057 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 16 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-11-22 21:55:48,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 97 flow [2024-11-22 21:55:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:55:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:55:48,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 54 transitions. [2024-11-22 21:55:48,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 21:55:48,072 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 59 flow. Second operand 4 states and 54 transitions. [2024-11-22 21:55:48,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 97 flow [2024-11-22 21:55:48,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:55:48,077 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 62 flow [2024-11-22 21:55:48,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2024-11-22 21:55:48,083 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2024-11-22 21:55:48,084 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 62 flow [2024-11-22 21:55:48,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-22 21:55:48,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:48,084 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:48,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:55:48,085 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-22 21:55:48,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1062405037, now seen corresponding path program 1 times [2024-11-22 21:55:48,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:48,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432833545] [2024-11-22 21:55:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:48,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:55:48,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:55:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:55:48,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:55:48,162 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:55:48,164 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-22 21:55:48,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-22 21:55:48,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-22 21:55:48,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-22 21:55:48,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-22 21:55:48,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:55:48,169 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-22 21:55:48,172 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:55:48,172 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 21:55:48,201 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:55:48,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 106 flow [2024-11-22 21:55:48,215 INFO L124 PetriNetUnfolderBase]: 9/65 cut-off events. [2024-11-22 21:55:48,215 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:55:48,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 65 events. 9/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2024-11-22 21:55:48,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 106 flow [2024-11-22 21:55:48,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 73 flow [2024-11-22 21:55:48,220 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:55:48,221 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;@5fa92678, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:55:48,221 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-22 21:55:48,228 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:55:48,228 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-22 21:55:48,228 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:55:48,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:48,229 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:48,229 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:55:48,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:48,229 INFO L85 PathProgramCache]: Analyzing trace with hash 537264105, now seen corresponding path program 1 times [2024-11-22 21:55:48,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:48,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6834509] [2024-11-22 21:55:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:48,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:55:48,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:48,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6834509] [2024-11-22 21:55:48,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6834509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:48,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:48,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:55:48,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536514138] [2024-11-22 21:55:48,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:48,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:55:48,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:48,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:55:48,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:55:48,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-22 21:55:48,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-22 21:55:48,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:48,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-22 21:55:48,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:48,489 INFO L124 PetriNetUnfolderBase]: 390/761 cut-off events. [2024-11-22 21:55:48,489 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-22 21:55:48,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 761 events. 390/761 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4017 event pairs, 204 based on Foata normal form. 72/779 useless extension candidates. Maximal degree in co-relation 406. Up to 616 conditions per place. [2024-11-22 21:55:48,498 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 20 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-22 21:55:48,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 121 flow [2024-11-22 21:55:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:55:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:55:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-11-22 21:55:48,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-11-22 21:55:48,501 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 73 flow. Second operand 4 states and 74 transitions. [2024-11-22 21:55:48,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 121 flow [2024-11-22 21:55:48,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:55:48,503 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 80 flow [2024-11-22 21:55:48,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2024-11-22 21:55:48,506 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-11-22 21:55:48,506 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 80 flow [2024-11-22 21:55:48,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2024-11-22 21:55:48,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:48,507 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:48,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:55:48,508 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:55:48,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:48,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1605050629, now seen corresponding path program 1 times [2024-11-22 21:55:48,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:48,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950402058] [2024-11-22 21:55:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:48,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:55:48,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:48,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950402058] [2024-11-22 21:55:48,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950402058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:48,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:48,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:55:48,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496335285] [2024-11-22 21:55:48,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:48,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:55:48,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:48,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:55:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:55:48,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-22 21:55:48,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:55:48,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:48,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-22 21:55:48,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:48,678 INFO L124 PetriNetUnfolderBase]: 390/749 cut-off events. [2024-11-22 21:55:48,678 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-22 21:55:48,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 749 events. 390/749 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3872 event pairs, 354 based on Foata normal form. 0/706 useless extension candidates. Maximal degree in co-relation 519. Up to 620 conditions per place. [2024-11-22 21:55:48,682 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 17 selfloop transitions, 1 changer transitions 1/27 dead transitions. [2024-11-22 21:55:48,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 27 transitions, 116 flow [2024-11-22 21:55:48,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:55:48,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:55:48,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-22 21:55:48,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-11-22 21:55:48,684 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 80 flow. Second operand 3 states and 55 transitions. [2024-11-22 21:55:48,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 27 transitions, 116 flow [2024-11-22 21:55:48,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:55:48,687 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 74 flow [2024-11-22 21:55:48,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2024-11-22 21:55:48,688 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2024-11-22 21:55:48,688 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 74 flow [2024-11-22 21:55:48,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:55:48,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:48,688 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:48,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:55:48,689 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:55:48,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:48,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1784029904, now seen corresponding path program 1 times [2024-11-22 21:55:48,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:48,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642766429] [2024-11-22 21:55:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:48,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:55:48,707 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:55:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:55:48,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:55:48,718 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:55:48,718 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-22 21:55:48,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-22 21:55:48,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-11-22 21:55:48,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-22 21:55:48,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-22 21:55:48,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-22 21:55:48,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:55:48,719 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-22 21:55:48,720 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:55:48,720 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-22 21:55:48,753 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:55:48,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 59 transitions, 154 flow [2024-11-22 21:55:48,763 INFO L124 PetriNetUnfolderBase]: 12/87 cut-off events. [2024-11-22 21:55:48,763 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-22 21:55:48,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 87 events. 12/87 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 284 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 104. Up to 8 conditions per place. [2024-11-22 21:55:48,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 59 transitions, 154 flow [2024-11-22 21:55:48,764 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 34 transitions, 89 flow [2024-11-22 21:55:48,765 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:55:48,767 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;@5fa92678, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:55:48,767 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-22 21:55:48,769 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:55:48,769 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-22 21:55:48,769 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:55:48,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:48,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:48,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 21:55:48,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:48,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1189155245, now seen corresponding path program 1 times [2024-11-22 21:55:48,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:48,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77612133] [2024-11-22 21:55:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:48,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:55:48,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77612133] [2024-11-22 21:55:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77612133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:48,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:48,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:55:48,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335819013] [2024-11-22 21:55:48,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:48,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:55:48,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:48,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:55:48,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:55:48,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-11-22 21:55:48,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-22 21:55:48,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:48,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-11-22 21:55:48,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:49,064 INFO L124 PetriNetUnfolderBase]: 1695/2834 cut-off events. [2024-11-22 21:55:49,067 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-22 21:55:49,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5404 conditions, 2834 events. 1695/2834 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 16777 event pairs, 1331 based on Foata normal form. 207/2861 useless extension candidates. Maximal degree in co-relation 1466. Up to 2434 conditions per place. [2024-11-22 21:55:49,089 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 23 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2024-11-22 21:55:49,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 143 flow [2024-11-22 21:55:49,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:55:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:55:49,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-22 21:55:49,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3940677966101695 [2024-11-22 21:55:49,093 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 89 flow. Second operand 4 states and 93 transitions. [2024-11-22 21:55:49,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 143 flow [2024-11-22 21:55:49,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 140 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 21:55:49,097 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 94 flow [2024-11-22 21:55:49,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=80, 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=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-11-22 21:55:49,098 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-11-22 21:55:49,098 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 94 flow [2024-11-22 21:55:49,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-22 21:55:49,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:49,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:49,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:55:49,104 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 21:55:49,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2051008230, now seen corresponding path program 1 times [2024-11-22 21:55:49,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:49,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180206485] [2024-11-22 21:55:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:49,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:55:49,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:49,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180206485] [2024-11-22 21:55:49,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180206485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:49,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:49,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:55:49,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099556774] [2024-11-22 21:55:49,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:49,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:55:49,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:49,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:55:49,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:55:49,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-11-22 21:55:49,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:55:49,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:49,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-11-22 21:55:49,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:49,375 INFO L124 PetriNetUnfolderBase]: 1695/2792 cut-off events. [2024-11-22 21:55:49,375 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-22 21:55:49,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5436 conditions, 2792 events. 1695/2792 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 16233 event pairs, 1578 based on Foata normal form. 0/2650 useless extension candidates. Maximal degree in co-relation 1965. Up to 2438 conditions per place. [2024-11-22 21:55:49,393 INFO L140 encePairwiseOnDemand]: 57/59 looper letters, 20 selfloop transitions, 1 changer transitions 1/31 dead transitions. [2024-11-22 21:55:49,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 31 transitions, 136 flow [2024-11-22 21:55:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:55:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:55:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-22 21:55:49,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3954802259887006 [2024-11-22 21:55:49,395 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 94 flow. Second operand 3 states and 70 transitions. [2024-11-22 21:55:49,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 31 transitions, 136 flow [2024-11-22 21:55:49,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 31 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:55:49,397 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 88 flow [2024-11-22 21:55:49,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-11-22 21:55:49,397 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-11-22 21:55:49,398 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 88 flow [2024-11-22 21:55:49,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:55:49,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:49,398 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:49,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:55:49,398 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 21:55:49,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:49,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1412657026, now seen corresponding path program 1 times [2024-11-22 21:55:49,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:49,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229915379] [2024-11-22 21:55:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:49,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:55:49,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:49,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229915379] [2024-11-22 21:55:49,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229915379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:49,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:49,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:55:49,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767191578] [2024-11-22 21:55:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:49,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:55:49,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:49,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:55:49,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:55:49,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-11-22 21:55:49,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-22 21:55:49,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:49,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-11-22 21:55:49,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:49,867 INFO L124 PetriNetUnfolderBase]: 2541/4001 cut-off events. [2024-11-22 21:55:49,867 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-11-22 21:55:49,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7839 conditions, 4001 events. 2541/4001 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 23499 event pairs, 1296 based on Foata normal form. 0/3619 useless extension candidates. Maximal degree in co-relation 7829. Up to 2039 conditions per place. [2024-11-22 21:55:49,887 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 27 selfloop transitions, 3 changer transitions 19/57 dead transitions. [2024-11-22 21:55:49,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 240 flow [2024-11-22 21:55:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:55:49,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:55:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-22 21:55:49,889 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4096045197740113 [2024-11-22 21:55:49,889 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 88 flow. Second operand 6 states and 145 transitions. [2024-11-22 21:55:49,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 240 flow [2024-11-22 21:55:49,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:55:49,891 INFO L231 Difference]: Finished difference. Result has 47 places, 30 transitions, 101 flow [2024-11-22 21:55:49,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=101, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2024-11-22 21:55:49,892 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-11-22 21:55:49,892 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 101 flow [2024-11-22 21:55:49,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-22 21:55:49,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:49,893 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:49,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:55:49,893 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 21:55:49,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:49,894 INFO L85 PathProgramCache]: Analyzing trace with hash -493844980, now seen corresponding path program 1 times [2024-11-22 21:55:49,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:49,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168017384] [2024-11-22 21:55:49,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:49,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:55:49,903 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:55:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:55:49,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:55:49,918 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:55:49,918 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-22 21:55:49,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-22 21:55:49,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-22 21:55:49,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-22 21:55:49,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-22 21:55:49,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-22 21:55:49,919 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-22 21:55:49,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:55:49,920 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-22 21:55:49,920 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:55:49,920 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-22 21:55:49,950 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:55:49,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 75 transitions, 206 flow [2024-11-22 21:55:49,960 INFO L124 PetriNetUnfolderBase]: 15/109 cut-off events. [2024-11-22 21:55:49,960 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-22 21:55:49,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 109 events. 15/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 133. Up to 10 conditions per place. [2024-11-22 21:55:49,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 75 transitions, 206 flow [2024-11-22 21:55:49,963 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 38 transitions, 107 flow [2024-11-22 21:55:49,964 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:55:49,964 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;@5fa92678, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:55:49,965 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-22 21:55:49,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:55:49,970 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-22 21:55:49,970 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:55:49,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:49,970 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:49,971 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-22 21:55:49,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:49,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1127082291, now seen corresponding path program 1 times [2024-11-22 21:55:49,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:49,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349487186] [2024-11-22 21:55:49,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:49,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:55:50,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:50,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349487186] [2024-11-22 21:55:50,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349487186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:50,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:50,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:55:50,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798235164] [2024-11-22 21:55:50,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:50,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:55:50,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:50,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:55:50,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:55:50,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-11-22 21:55:50,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-22 21:55:50,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:50,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-11-22 21:55:50,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:50,847 INFO L124 PetriNetUnfolderBase]: 6636/10115 cut-off events. [2024-11-22 21:55:50,847 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2024-11-22 21:55:50,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19463 conditions, 10115 events. 6636/10115 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 64220 event pairs, 5516 based on Foata normal form. 693/10277 useless extension candidates. Maximal degree in co-relation 5468. Up to 8914 conditions per place. [2024-11-22 21:55:50,913 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 26 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2024-11-22 21:55:50,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 167 flow [2024-11-22 21:55:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:55:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:55:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-22 21:55:50,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-11-22 21:55:50,915 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 107 flow. Second operand 4 states and 112 transitions. [2024-11-22 21:55:50,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 167 flow [2024-11-22 21:55:50,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 39 transitions, 160 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-22 21:55:50,921 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 108 flow [2024-11-22 21:55:50,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2024-11-22 21:55:50,923 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-22 21:55:50,923 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 108 flow [2024-11-22 21:55:50,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-22 21:55:50,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:50,924 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:50,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 21:55:50,924 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-22 21:55:50,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:50,925 INFO L85 PathProgramCache]: Analyzing trace with hash 106936007, now seen corresponding path program 1 times [2024-11-22 21:55:50,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:50,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733894489] [2024-11-22 21:55:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:50,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:55:50,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:50,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733894489] [2024-11-22 21:55:50,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733894489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:50,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:50,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:55:50,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383076116] [2024-11-22 21:55:50,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:50,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:55:50,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:50,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:55:50,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:55:50,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-11-22 21:55:50,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-22 21:55:50,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:50,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-11-22 21:55:50,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:51,809 INFO L124 PetriNetUnfolderBase]: 6636/10021 cut-off events. [2024-11-22 21:55:51,810 INFO L125 PetriNetUnfolderBase]: For 396/396 co-relation queries the response was YES. [2024-11-22 21:55:51,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19551 conditions, 10021 events. 6636/10021 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 63167 event pairs, 6276 based on Foata normal form. 0/9609 useless extension candidates. Maximal degree in co-relation 19514. Up to 8918 conditions per place. [2024-11-22 21:55:51,965 INFO L140 encePairwiseOnDemand]: 73/75 looper letters, 23 selfloop transitions, 1 changer transitions 1/35 dead transitions. [2024-11-22 21:55:51,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 156 flow [2024-11-22 21:55:51,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:55:51,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:55:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-22 21:55:51,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-11-22 21:55:51,967 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 108 flow. Second operand 3 states and 85 transitions. [2024-11-22 21:55:51,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 156 flow [2024-11-22 21:55:51,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:55:51,969 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 102 flow [2024-11-22 21:55:51,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2024-11-22 21:55:51,971 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2024-11-22 21:55:51,972 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 102 flow [2024-11-22 21:55:51,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-22 21:55:51,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:51,972 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:51,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 21:55:51,973 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-22 21:55:51,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1090484358, now seen corresponding path program 1 times [2024-11-22 21:55:51,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:51,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5072248] [2024-11-22 21:55:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:55:52,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:52,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5072248] [2024-11-22 21:55:52,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5072248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:52,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:52,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:55:52,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908238247] [2024-11-22 21:55:52,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:52,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:55:52,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:52,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:55:52,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:55:52,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-11-22 21:55:52,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-11-22 21:55:52,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:52,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-11-22 21:55:52,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:53,063 INFO L124 PetriNetUnfolderBase]: 9912/14254 cut-off events. [2024-11-22 21:55:53,063 INFO L125 PetriNetUnfolderBase]: For 395/395 co-relation queries the response was YES. [2024-11-22 21:55:53,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28137 conditions, 14254 events. 9912/14254 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 88698 event pairs, 5184 based on Foata normal form. 0/13143 useless extension candidates. Maximal degree in co-relation 28126. Up to 7466 conditions per place. [2024-11-22 21:55:53,118 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 32 selfloop transitions, 3 changer transitions 23/67 dead transitions. [2024-11-22 21:55:53,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 284 flow [2024-11-22 21:55:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:55:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:55:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-22 21:55:53,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39555555555555555 [2024-11-22 21:55:53,120 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 102 flow. Second operand 6 states and 178 transitions. [2024-11-22 21:55:53,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 284 flow [2024-11-22 21:55:53,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:55:53,123 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 115 flow [2024-11-22 21:55:53,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2024-11-22 21:55:53,123 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2024-11-22 21:55:53,124 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 115 flow [2024-11-22 21:55:53,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-11-22 21:55:53,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:53,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:53,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 21:55:53,125 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-22 21:55:53,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:53,125 INFO L85 PathProgramCache]: Analyzing trace with hash 553737655, now seen corresponding path program 1 times [2024-11-22 21:55:53,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:53,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063199630] [2024-11-22 21:55:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:53,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:55:53,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:53,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063199630] [2024-11-22 21:55:53,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063199630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:55:53,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384066871] [2024-11-22 21:55:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:53,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:55:53,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:55:53,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:55:53,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:55:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:53,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 21:55:53,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:55:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:55:53,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:55:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:55:53,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384066871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:55:53,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:55:53,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-22 21:55:53,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897452577] [2024-11-22 21:55:53,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:55:53,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:55:53,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:53,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:55:53,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:55:53,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 75 [2024-11-22 21:55:53,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 115 flow. Second operand has 10 states, 10 states have (on average 22.2) internal successors, (222), 10 states have internal predecessors, (222), 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) [2024-11-22 21:55:53,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:53,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 75 [2024-11-22 21:55:53,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:54,032 INFO L124 PetriNetUnfolderBase]: 5119/7386 cut-off events. [2024-11-22 21:55:54,032 INFO L125 PetriNetUnfolderBase]: For 1290/1290 co-relation queries the response was YES. [2024-11-22 21:55:54,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16117 conditions, 7386 events. 5119/7386 cut-off events. For 1290/1290 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 40355 event pairs, 777 based on Foata normal form. 39/7182 useless extension candidates. Maximal degree in co-relation 16103. Up to 5941 conditions per place. [2024-11-22 21:55:54,079 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 45 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-11-22 21:55:54,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 275 flow [2024-11-22 21:55:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:55:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:55:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-11-22 21:55:54,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36952380952380953 [2024-11-22 21:55:54,081 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 115 flow. Second operand 7 states and 194 transitions. [2024-11-22 21:55:54,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 275 flow [2024-11-22 21:55:54,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 267 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-22 21:55:54,115 INFO L231 Difference]: Finished difference. Result has 57 places, 37 transitions, 150 flow [2024-11-22 21:55:54,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2024-11-22 21:55:54,116 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2024-11-22 21:55:54,116 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 150 flow [2024-11-22 21:55:54,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.2) internal successors, (222), 10 states have internal predecessors, (222), 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) [2024-11-22 21:55:54,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:54,117 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:54,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 21:55:54,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 21:55:54,318 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-22 21:55:54,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:54,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1201556913, now seen corresponding path program 1 times [2024-11-22 21:55:54,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:54,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694802600] [2024-11-22 21:55:54,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:54,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:55:54,334 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:55:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:55:54,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:55:54,353 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:55:54,354 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-22 21:55:54,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-22 21:55:54,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2024-11-22 21:55:54,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-22 21:55:54,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-22 21:55:54,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-11-22 21:55:54,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-22 21:55:54,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-22 21:55:54,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 21:55:54,357 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-22 21:55:54,358 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:55:54,358 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-22 21:55:54,409 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:55:54,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 91 transitions, 262 flow [2024-11-22 21:55:54,424 INFO L124 PetriNetUnfolderBase]: 18/131 cut-off events. [2024-11-22 21:55:54,424 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-22 21:55:54,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 131 events. 18/131 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 468 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 163. Up to 12 conditions per place. [2024-11-22 21:55:54,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 91 transitions, 262 flow [2024-11-22 21:55:54,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 42 transitions, 127 flow [2024-11-22 21:55:54,429 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:55:54,429 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;@5fa92678, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:55:54,430 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-22 21:55:54,431 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:55:54,432 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-22 21:55:54,432 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:55:54,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:54,432 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:54,432 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-22 21:55:54,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:54,433 INFO L85 PathProgramCache]: Analyzing trace with hash 723482967, now seen corresponding path program 1 times [2024-11-22 21:55:54,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:54,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121856046] [2024-11-22 21:55:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:54,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:55:54,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:54,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121856046] [2024-11-22 21:55:54,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121856046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:54,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:54,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:55:54,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668487794] [2024-11-22 21:55:54,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:54,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:55:54,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:54,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:55:54,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:55:54,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2024-11-22 21:55:54,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-22 21:55:54,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:54,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2024-11-22 21:55:54,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:56,685 INFO L124 PetriNetUnfolderBase]: 24537/35036 cut-off events. [2024-11-22 21:55:56,685 INFO L125 PetriNetUnfolderBase]: For 2388/2388 co-relation queries the response was YES. [2024-11-22 21:55:56,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67875 conditions, 35036 events. 24537/35036 cut-off events. For 2388/2388 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 234457 event pairs, 18852 based on Foata normal form. 2151/35603 useless extension candidates. Maximal degree in co-relation 19553. Up to 31432 conditions per place. [2024-11-22 21:55:56,869 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 29 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-11-22 21:55:56,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 193 flow [2024-11-22 21:55:56,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:55:56,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:55:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-22 21:55:56,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3598901098901099 [2024-11-22 21:55:56,871 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 127 flow. Second operand 4 states and 131 transitions. [2024-11-22 21:55:56,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 193 flow [2024-11-22 21:55:56,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 180 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-22 21:55:56,888 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 122 flow [2024-11-22 21:55:56,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2024-11-22 21:55:56,890 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2024-11-22 21:55:56,890 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 122 flow [2024-11-22 21:55:56,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-22 21:55:56,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:56,891 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:56,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 21:55:56,891 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-22 21:55:56,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:56,892 INFO L85 PathProgramCache]: Analyzing trace with hash 67801256, now seen corresponding path program 1 times [2024-11-22 21:55:56,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:56,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376599292] [2024-11-22 21:55:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:56,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:55:56,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:56,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376599292] [2024-11-22 21:55:56,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376599292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:56,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:56,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:55:56,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018965513] [2024-11-22 21:55:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:56,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:55:56,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:55:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:55:56,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2024-11-22 21:55:56,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-22 21:55:56,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:56,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2024-11-22 21:55:56,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:55:59,043 INFO L124 PetriNetUnfolderBase]: 24537/34780 cut-off events. [2024-11-22 21:55:59,043 INFO L125 PetriNetUnfolderBase]: For 1557/1557 co-relation queries the response was YES. [2024-11-22 21:55:59,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68044 conditions, 34780 events. 24537/34780 cut-off events. For 1557/1557 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 230540 event pairs, 23448 based on Foata normal form. 0/33558 useless extension candidates. Maximal degree in co-relation 68006. Up to 31436 conditions per place. [2024-11-22 21:55:59,179 INFO L140 encePairwiseOnDemand]: 89/91 looper letters, 26 selfloop transitions, 1 changer transitions 1/39 dead transitions. [2024-11-22 21:55:59,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 39 transitions, 176 flow [2024-11-22 21:55:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:55:59,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:55:59,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-22 21:55:59,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3663003663003663 [2024-11-22 21:55:59,181 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 122 flow. Second operand 3 states and 100 transitions. [2024-11-22 21:55:59,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 39 transitions, 176 flow [2024-11-22 21:55:59,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 39 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:55:59,186 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 116 flow [2024-11-22 21:55:59,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2024-11-22 21:55:59,186 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2024-11-22 21:55:59,187 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 116 flow [2024-11-22 21:55:59,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-22 21:55:59,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:55:59,187 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:55:59,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 21:55:59,187 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-22 21:55:59,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:55:59,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1259211681, now seen corresponding path program 1 times [2024-11-22 21:55:59,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:55:59,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324225696] [2024-11-22 21:55:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:55:59,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:55:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:55:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:55:59,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:55:59,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324225696] [2024-11-22 21:55:59,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324225696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:55:59,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:55:59,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:55:59,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567522607] [2024-11-22 21:55:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:55:59,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:55:59,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:55:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:55:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:55:59,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2024-11-22 21:55:59,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-22 21:55:59,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:55:59,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2024-11-22 21:55:59,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:56:01,935 INFO L124 PetriNetUnfolderBase]: 36561/49543 cut-off events. [2024-11-22 21:56:01,935 INFO L125 PetriNetUnfolderBase]: For 1556/1556 co-relation queries the response was YES. [2024-11-22 21:56:02,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98095 conditions, 49543 events. 36561/49543 cut-off events. For 1556/1556 co-relation queries the response was YES. Maximal size of possible extension queue 2082. Compared 316741 event pairs, 19440 based on Foata normal form. 0/46245 useless extension candidates. Maximal degree in co-relation 98083. Up to 26339 conditions per place. [2024-11-22 21:56:02,103 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 37 selfloop transitions, 3 changer transitions 27/77 dead transitions. [2024-11-22 21:56:02,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 328 flow [2024-11-22 21:56:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:56:02,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:56:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-11-22 21:56:02,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38644688644688646 [2024-11-22 21:56:02,105 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 116 flow. Second operand 6 states and 211 transitions. [2024-11-22 21:56:02,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 328 flow [2024-11-22 21:56:02,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:56:02,110 INFO L231 Difference]: Finished difference. Result has 59 places, 38 transitions, 129 flow [2024-11-22 21:56:02,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=59, PETRI_TRANSITIONS=38} [2024-11-22 21:56:02,111 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-11-22 21:56:02,111 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 38 transitions, 129 flow [2024-11-22 21:56:02,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-22 21:56:02,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:56:02,112 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:56:02,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 21:56:02,112 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-22 21:56:02,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:56:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash 379870904, now seen corresponding path program 1 times [2024-11-22 21:56:02,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:56:02,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727397739] [2024-11-22 21:56:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:56:02,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:56:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:56:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:56:02,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:56:02,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727397739] [2024-11-22 21:56:02,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727397739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:56:02,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568890152] [2024-11-22 21:56:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:56:02,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:56:02,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:56:02,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:56:02,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:56:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:56:02,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 21:56:02,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:56:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:56:02,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:56:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:56:02,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568890152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:56:02,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:56:02,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-22 21:56:02,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894566588] [2024-11-22 21:56:02,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:56:02,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:56:02,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:56:02,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:56:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:56:02,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 91 [2024-11-22 21:56:02,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 38 transitions, 129 flow. Second operand has 10 states, 10 states have (on average 26.2) internal successors, (262), 10 states have internal predecessors, (262), 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) [2024-11-22 21:56:02,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:56:02,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 91 [2024-11-22 21:56:02,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:56:04,222 INFO L124 PetriNetUnfolderBase]: 23020/31605 cut-off events. [2024-11-22 21:56:04,222 INFO L125 PetriNetUnfolderBase]: For 6046/6046 co-relation queries the response was YES. [2024-11-22 21:56:04,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68444 conditions, 31605 events. 23020/31605 cut-off events. For 6046/6046 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 188898 event pairs, 5983 based on Foata normal form. 39/30672 useless extension candidates. Maximal degree in co-relation 68429. Up to 26515 conditions per place. [2024-11-22 21:56:04,345 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 50 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2024-11-22 21:56:04,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 303 flow [2024-11-22 21:56:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:56:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:56:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-11-22 21:56:04,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3563579277864992 [2024-11-22 21:56:04,346 INFO L175 Difference]: Start difference. First operand has 59 places, 38 transitions, 129 flow. Second operand 7 states and 227 transitions. [2024-11-22 21:56:04,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 303 flow [2024-11-22 21:56:04,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 295 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-22 21:56:04,565 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 164 flow [2024-11-22 21:56:04,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2024-11-22 21:56:04,566 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2024-11-22 21:56:04,566 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 164 flow [2024-11-22 21:56:04,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.2) internal successors, (262), 10 states have internal predecessors, (262), 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) [2024-11-22 21:56:04,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:56:04,566 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:56:04,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:56:04,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 21:56:04,767 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-22 21:56:04,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:56:04,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1332664853, now seen corresponding path program 1 times [2024-11-22 21:56:04,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:56:04,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043377590] [2024-11-22 21:56:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:56:04,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:56:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:56:04,777 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:56:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:56:04,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:56:04,787 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:56:04,787 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-22 21:56:04,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2024-11-22 21:56:04,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 9 remaining) [2024-11-22 21:56:04,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 9 remaining) [2024-11-22 21:56:04,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2024-11-22 21:56:04,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2024-11-22 21:56:04,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2024-11-22 21:56:04,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2024-11-22 21:56:04,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-22 21:56:04,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 21:56:04,789 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-22 21:56:04,789 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:56:04,789 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-22 21:56:04,838 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:56:04,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 107 transitions, 322 flow [2024-11-22 21:56:04,846 INFO L124 PetriNetUnfolderBase]: 21/153 cut-off events. [2024-11-22 21:56:04,846 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-22 21:56:04,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 153 events. 21/153 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 546 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 194. Up to 14 conditions per place. [2024-11-22 21:56:04,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 107 transitions, 322 flow [2024-11-22 21:56:04,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 46 transitions, 149 flow [2024-11-22 21:56:04,849 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:56:04,849 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;@5fa92678, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:56:04,849 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-22 21:56:04,851 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:56:04,853 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-22 21:56:04,853 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:56:04,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:56:04,853 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:56:04,853 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-11-22 21:56:04,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:56:04,853 INFO L85 PathProgramCache]: Analyzing trace with hash 67573233, now seen corresponding path program 1 times [2024-11-22 21:56:04,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:56:04,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859871750] [2024-11-22 21:56:04,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:56:04,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:56:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:56:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:56:04,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:56:04,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859871750] [2024-11-22 21:56:04,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859871750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:56:04,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:56:04,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:56:04,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46628564] [2024-11-22 21:56:04,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:56:04,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:56:04,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:56:04,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:56:04,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:56:04,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 107 [2024-11-22 21:56:04,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-11-22 21:56:04,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:56:04,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 107 [2024-11-22 21:56:04,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:56:11,982 INFO L124 PetriNetUnfolderBase]: 87474/119045 cut-off events. [2024-11-22 21:56:11,982 INFO L125 PetriNetUnfolderBase]: For 10353/10353 co-relation queries the response was YES. [2024-11-22 21:56:12,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231832 conditions, 119045 events. 87474/119045 cut-off events. For 10353/10353 co-relation queries the response was YES. Maximal size of possible extension queue 4479. Compared 824190 event pairs, 77282 based on Foata normal form. 6525/120824 useless extension candidates. Maximal degree in co-relation 68049. Up to 108220 conditions per place. [2024-11-22 21:56:12,506 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 32 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-11-22 21:56:12,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 221 flow [2024-11-22 21:56:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:56:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:56:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-11-22 21:56:12,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35046728971962615 [2024-11-22 21:56:12,507 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 149 flow. Second operand 4 states and 150 transitions. [2024-11-22 21:56:12,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 221 flow [2024-11-22 21:56:12,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 47 transitions, 200 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-22 21:56:12,578 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 136 flow [2024-11-22 21:56:12,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2024-11-22 21:56:12,579 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-11-22 21:56:12,579 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 136 flow [2024-11-22 21:56:12,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-11-22 21:56:12,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:56:12,579 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:56:12,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 21:56:12,580 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-11-22 21:56:12,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:56:12,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1933603977, now seen corresponding path program 1 times [2024-11-22 21:56:12,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:56:12,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190807785] [2024-11-22 21:56:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:56:12,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:56:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:56:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:56:12,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:56:12,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190807785] [2024-11-22 21:56:12,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190807785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:56:12,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:56:12,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:56:12,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315171027] [2024-11-22 21:56:12,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:56:12,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:56:12,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:56:12,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:56:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:56:12,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 107 [2024-11-22 21:56:12,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2024-11-22 21:56:12,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:56:12,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 107 [2024-11-22 21:56:12,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:56:19,978 INFO L124 PetriNetUnfolderBase]: 87474/118303 cut-off events. [2024-11-22 21:56:19,978 INFO L125 PetriNetUnfolderBase]: For 5949/5949 co-relation queries the response was YES. [2024-11-22 21:56:20,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232001 conditions, 118303 events. 87474/118303 cut-off events. For 5949/5949 co-relation queries the response was YES. Maximal size of possible extension queue 4425. Compared 807896 event pairs, 84198 based on Foata normal form. 0/114648 useless extension candidates. Maximal degree in co-relation 231962. Up to 108224 conditions per place. [2024-11-22 21:56:20,876 INFO L140 encePairwiseOnDemand]: 105/107 looper letters, 29 selfloop transitions, 1 changer transitions 1/43 dead transitions. [2024-11-22 21:56:20,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 43 transitions, 196 flow [2024-11-22 21:56:20,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:56:20,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:56:20,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-22 21:56:20,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3582554517133956 [2024-11-22 21:56:20,878 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 136 flow. Second operand 3 states and 115 transitions. [2024-11-22 21:56:20,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 43 transitions, 196 flow [2024-11-22 21:56:20,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:56:20,890 INFO L231 Difference]: Finished difference. Result has 60 places, 42 transitions, 130 flow [2024-11-22 21:56:20,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2024-11-22 21:56:20,891 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 1 predicate places. [2024-11-22 21:56:20,891 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 130 flow [2024-11-22 21:56:20,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2024-11-22 21:56:20,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:56:20,892 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:56:20,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 21:56:20,892 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-11-22 21:56:20,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:56:20,892 INFO L85 PathProgramCache]: Analyzing trace with hash -86200029, now seen corresponding path program 1 times [2024-11-22 21:56:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:56:20,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879798339] [2024-11-22 21:56:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:56:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:56:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:56:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:56:20,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:56:20,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879798339] [2024-11-22 21:56:20,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879798339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:56:20,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:56:20,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:56:20,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676783964] [2024-11-22 21:56:20,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:56:20,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:56:20,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:56:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:56:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:56:20,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 107 [2024-11-22 21:56:20,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 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) [2024-11-22 21:56:20,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:56:20,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 107 [2024-11-22 21:56:20,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand