./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c -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 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:50:20,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:50:20,629 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:50:20,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:50:20,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:50:20,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:50:20,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:50:20,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:50:20,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:50:20,684 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:50:20,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:50:20,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:50:20,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:50:20,690 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:50:20,690 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:50:20,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:50:20,691 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:50:20,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:50:20,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:50:20,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:50:20,692 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:50:20,692 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:50:20,693 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:50:20,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:50:20,695 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:50:20,695 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:50:20,695 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:50:20,696 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:50:20,696 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:50:20,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:50:20,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:50:20,697 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:50:20,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:50:20,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:50:20,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:50:20,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:50:20,697 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:50:20,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:50:20,698 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:50:20,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:50:20,698 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:50:20,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:50:20,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-10-14 19:50:20,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:50:20,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:50:20,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:50:20,970 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:50:20,970 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:50:20,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-14 19:50:22,425 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:50:22,602 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:50:22,602 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-14 19:50:22,609 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7825fbeb0/22a5250df7274ba4bbeecf61c013457a/FLAG92116be9f [2024-10-14 19:50:22,621 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7825fbeb0/22a5250df7274ba4bbeecf61c013457a [2024-10-14 19:50:22,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:50:22,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:50:22,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:50:22,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:50:22,632 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:50:22,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79341cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22, skipping insertion in model container [2024-10-14 19:50:22,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,654 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:50:22,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:50:22,835 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:50:22,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:50:22,871 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:50:22,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22 WrapperNode [2024-10-14 19:50:22,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:50:22,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:50:22,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:50:22,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:50:22,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,910 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 162 [2024-10-14 19:50:22,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:50:22,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:50:22,912 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:50:22,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:50:22,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,948 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 19:50:22,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:50:22,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:50:22,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:50:22,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:50:22,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (1/1) ... [2024-10-14 19:50:22,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:50:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:22,998 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) [2024-10-14 19:50:23,004 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 [2024-10-14 19:50:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:50:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:50:23,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:50:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:50:23,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:50:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:50:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:50:23,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:50:23,056 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:50:23,170 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:50:23,173 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:50:23,487 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:50:23,487 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:50:23,834 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:50:23,850 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 19:50:23,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:50:23 BoogieIcfgContainer [2024-10-14 19:50:23,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:50:23,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:50:23,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:50:23,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:50:23,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:50:22" (1/3) ... [2024-10-14 19:50:23,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639d0375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:50:23, skipping insertion in model container [2024-10-14 19:50:23,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:50:22" (2/3) ... [2024-10-14 19:50:23,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639d0375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:50:23, skipping insertion in model container [2024-10-14 19:50:23,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:50:23" (3/3) ... [2024-10-14 19:50:23,861 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-10-14 19:50:23,877 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:50:23,878 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:50:23,878 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:50:23,921 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 19:50:23,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-10-14 19:50:23,980 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-14 19:50:23,981 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:50:23,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-10-14 19:50:23,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-10-14 19:50:23,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-10-14 19:50:24,000 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:50:24,009 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;@21db9ff8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:50:24,009 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 19:50:24,020 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:50:24,021 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-10-14 19:50:24,021 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:50:24,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:24,022 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:24,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:24,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:24,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1376092147, now seen corresponding path program 1 times [2024-10-14 19:50:24,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:24,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001111917] [2024-10-14 19:50:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:24,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001111917] [2024-10-14 19:50:24,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001111917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:24,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:24,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:50:24,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68034942] [2024-10-14 19:50:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:24,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:24,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:24,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:24,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:24,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:24,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:24,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:24,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:24,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:24,903 INFO L124 PetriNetUnfolderBase]: 67/128 cut-off events. [2024-10-14 19:50:24,903 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-14 19:50:24,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 128 events. 67/128 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 341 event pairs, 14 based on Foata normal form. 3/101 useless extension candidates. Maximal degree in co-relation 222. Up to 72 conditions per place. [2024-10-14 19:50:24,907 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 25 selfloop transitions, 5 changer transitions 4/35 dead transitions. [2024-10-14 19:50:24,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 35 transitions, 168 flow [2024-10-14 19:50:24,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-10-14 19:50:24,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-10-14 19:50:24,923 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 5 states and 57 transitions. [2024-10-14 19:50:24,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 35 transitions, 168 flow [2024-10-14 19:50:24,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:50:24,929 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 68 flow [2024-10-14 19:50:24,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-10-14 19:50:24,934 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2024-10-14 19:50:24,936 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 68 flow [2024-10-14 19:50:24,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:24,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:24,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:24,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:50:24,938 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:24,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:24,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2082207311, now seen corresponding path program 2 times [2024-10-14 19:50:24,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:24,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744067898] [2024-10-14 19:50:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:24,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:25,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:25,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744067898] [2024-10-14 19:50:25,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744067898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:25,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:25,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:50:25,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929952893] [2024-10-14 19:50:25,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:25,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:25,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:25,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:25,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:25,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:25,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:25,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:25,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:25,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:25,385 INFO L124 PetriNetUnfolderBase]: 66/121 cut-off events. [2024-10-14 19:50:25,386 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-14 19:50:25,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 121 events. 66/121 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 317 event pairs, 11 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 325. Up to 72 conditions per place. [2024-10-14 19:50:25,389 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 24 selfloop transitions, 6 changer transitions 4/35 dead transitions. [2024-10-14 19:50:25,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 182 flow [2024-10-14 19:50:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-10-14 19:50:25,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-10-14 19:50:25,392 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 68 flow. Second operand 5 states and 54 transitions. [2024-10-14 19:50:25,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 182 flow [2024-10-14 19:50:25,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 180 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-14 19:50:25,396 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 100 flow [2024-10-14 19:50:25,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2024-10-14 19:50:25,398 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 6 predicate places. [2024-10-14 19:50:25,398 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 100 flow [2024-10-14 19:50:25,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:25,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:25,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:25,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:50:25,400 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:25,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1488777393, now seen corresponding path program 1 times [2024-10-14 19:50:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:25,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817321316] [2024-10-14 19:50:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:25,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:25,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:25,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817321316] [2024-10-14 19:50:25,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817321316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:25,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:25,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:25,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594210749] [2024-10-14 19:50:25,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:25,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:25,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:25,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:25,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:25,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:25,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:25,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:25,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:25,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:25,607 INFO L124 PetriNetUnfolderBase]: 80/140 cut-off events. [2024-10-14 19:50:25,608 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-10-14 19:50:25,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 140 events. 80/140 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 393 event pairs, 29 based on Foata normal form. 3/134 useless extension candidates. Maximal degree in co-relation 456. Up to 102 conditions per place. [2024-10-14 19:50:25,610 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 24 selfloop transitions, 10 changer transitions 3/38 dead transitions. [2024-10-14 19:50:25,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 256 flow [2024-10-14 19:50:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:25,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-10-14 19:50:25,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-14 19:50:25,613 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 100 flow. Second operand 5 states and 50 transitions. [2024-10-14 19:50:25,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 256 flow [2024-10-14 19:50:25,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 242 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:25,617 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 168 flow [2024-10-14 19:50:25,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2024-10-14 19:50:25,619 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 10 predicate places. [2024-10-14 19:50:25,619 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 168 flow [2024-10-14 19:50:25,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:25,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:25,620 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:25,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:50:25,621 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:25,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:25,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1405972326, now seen corresponding path program 1 times [2024-10-14 19:50:25,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:25,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323434986] [2024-10-14 19:50:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:25,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:25,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:25,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323434986] [2024-10-14 19:50:25,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323434986] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:25,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543904936] [2024-10-14 19:50:25,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:25,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:25,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:25,694 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) [2024-10-14 19:50:25,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 19:50:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:25,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:50:25,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:25,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:25,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543904936] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:25,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:25,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-10-14 19:50:25,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558307864] [2024-10-14 19:50:25,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:25,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 19:50:25,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:25,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 19:50:25,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 19:50:25,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:25,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 168 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-10-14 19:50:25,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:25,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:25,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:26,073 INFO L124 PetriNetUnfolderBase]: 90/161 cut-off events. [2024-10-14 19:50:26,073 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-10-14 19:50:26,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 161 events. 90/161 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 473 event pairs, 15 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 542. Up to 55 conditions per place. [2024-10-14 19:50:26,075 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 42 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-10-14 19:50:26,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 385 flow [2024-10-14 19:50:26,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:50:26,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:50:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-10-14 19:50:26,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-10-14 19:50:26,078 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 168 flow. Second operand 7 states and 74 transitions. [2024-10-14 19:50:26,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 385 flow [2024-10-14 19:50:26,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 56 transitions, 364 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:26,084 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 211 flow [2024-10-14 19:50:26,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=211, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-10-14 19:50:26,085 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 15 predicate places. [2024-10-14 19:50:26,085 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 211 flow [2024-10-14 19:50:26,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-10-14 19:50:26,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:26,087 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:26,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 19:50:26,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:26,292 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:26,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2005550949, now seen corresponding path program 2 times [2024-10-14 19:50:26,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:26,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817097119] [2024-10-14 19:50:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:26,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:26,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:26,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817097119] [2024-10-14 19:50:26,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817097119] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:26,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:26,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:26,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025082467] [2024-10-14 19:50:26,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:26,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:26,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:26,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:26,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:26,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:26,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:26,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:26,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:26,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:26,456 INFO L124 PetriNetUnfolderBase]: 89/163 cut-off events. [2024-10-14 19:50:26,456 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-10-14 19:50:26,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 163 events. 89/163 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 493 event pairs, 22 based on Foata normal form. 3/154 useless extension candidates. Maximal degree in co-relation 489. Up to 92 conditions per place. [2024-10-14 19:50:26,460 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 37 selfloop transitions, 7 changer transitions 5/50 dead transitions. [2024-10-14 19:50:26,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 393 flow [2024-10-14 19:50:26,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:26,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-10-14 19:50:26,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-10-14 19:50:26,464 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 211 flow. Second operand 5 states and 54 transitions. [2024-10-14 19:50:26,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 393 flow [2024-10-14 19:50:26,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 368 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-14 19:50:26,470 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 208 flow [2024-10-14 19:50:26,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-10-14 19:50:26,471 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 20 predicate places. [2024-10-14 19:50:26,472 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 208 flow [2024-10-14 19:50:26,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:26,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:26,472 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:26,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 19:50:26,473 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:26,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:26,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1198369694, now seen corresponding path program 2 times [2024-10-14 19:50:26,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:26,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265202153] [2024-10-14 19:50:26,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:26,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:26,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265202153] [2024-10-14 19:50:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265202153] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716037724] [2024-10-14 19:50:26,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:50:26,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:26,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:26,553 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) [2024-10-14 19:50:26,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 19:50:26,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:26,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:26,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:50:26,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:26,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:26,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716037724] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:26,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:26,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 19:50:26,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999211237] [2024-10-14 19:50:26,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:26,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:50:26,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:26,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:50:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:50:26,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:26,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 208 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:26,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:26,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:26,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:26,823 INFO L124 PetriNetUnfolderBase]: 106/187 cut-off events. [2024-10-14 19:50:26,823 INFO L125 PetriNetUnfolderBase]: For 446/446 co-relation queries the response was YES. [2024-10-14 19:50:26,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 187 events. 106/187 cut-off events. For 446/446 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 542 event pairs, 29 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 755. Up to 143 conditions per place. [2024-10-14 19:50:26,825 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 28 selfloop transitions, 21 changer transitions 1/51 dead transitions. [2024-10-14 19:50:26,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 428 flow [2024-10-14 19:50:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:50:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:50:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2024-10-14 19:50:26,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-10-14 19:50:26,827 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 208 flow. Second operand 6 states and 59 transitions. [2024-10-14 19:50:26,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 428 flow [2024-10-14 19:50:26,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 409 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-14 19:50:26,831 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 345 flow [2024-10-14 19:50:26,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-10-14 19:50:26,832 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 25 predicate places. [2024-10-14 19:50:26,832 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 345 flow [2024-10-14 19:50:26,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:26,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:26,834 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:26,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 19:50:27,034 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,SelfDestructingSolverStorable5 [2024-10-14 19:50:27,035 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:27,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1987061216, now seen corresponding path program 3 times [2024-10-14 19:50:27,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:27,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207667350] [2024-10-14 19:50:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:27,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:27,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:27,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207667350] [2024-10-14 19:50:27,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207667350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:27,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:27,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:27,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880598400] [2024-10-14 19:50:27,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:27,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:27,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:27,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:27,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:27,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:27,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 345 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:27,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:27,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:27,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:27,197 INFO L124 PetriNetUnfolderBase]: 104/190 cut-off events. [2024-10-14 19:50:27,198 INFO L125 PetriNetUnfolderBase]: For 626/626 co-relation queries the response was YES. [2024-10-14 19:50:27,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 190 events. 104/190 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 561 event pairs, 27 based on Foata normal form. 2/187 useless extension candidates. Maximal degree in co-relation 812. Up to 118 conditions per place. [2024-10-14 19:50:27,201 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 33 selfloop transitions, 16 changer transitions 3/53 dead transitions. [2024-10-14 19:50:27,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 501 flow [2024-10-14 19:50:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:27,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:27,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-10-14 19:50:27,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-14 19:50:27,203 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 345 flow. Second operand 5 states and 50 transitions. [2024-10-14 19:50:27,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 501 flow [2024-10-14 19:50:27,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 461 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:27,207 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 332 flow [2024-10-14 19:50:27,207 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-10-14 19:50:27,208 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 29 predicate places. [2024-10-14 19:50:27,209 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 332 flow [2024-10-14 19:50:27,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:27,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:27,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:27,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 19:50:27,210 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:27,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:27,210 INFO L85 PathProgramCache]: Analyzing trace with hash -369403695, now seen corresponding path program 3 times [2024-10-14 19:50:27,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:27,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418328240] [2024-10-14 19:50:27,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:27,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:27,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:27,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418328240] [2024-10-14 19:50:27,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418328240] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:27,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561612303] [2024-10-14 19:50:27,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:50:27,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:27,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:27,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:27,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 19:50:27,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:50:27,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:27,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:50:27,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:27,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561612303] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:27,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:27,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-10-14 19:50:27,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944973892] [2024-10-14 19:50:27,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:27,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 19:50:27,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 19:50:27,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 19:50:27,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:27,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 332 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-10-14 19:50:27,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:27,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:27,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:27,524 INFO L124 PetriNetUnfolderBase]: 108/194 cut-off events. [2024-10-14 19:50:27,524 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2024-10-14 19:50:27,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 194 events. 108/194 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 570 event pairs, 12 based on Foata normal form. 4/198 useless extension candidates. Maximal degree in co-relation 888. Up to 60 conditions per place. [2024-10-14 19:50:27,527 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 41 selfloop transitions, 22 changer transitions 0/64 dead transitions. [2024-10-14 19:50:27,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 589 flow [2024-10-14 19:50:27,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:50:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:50:27,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-10-14 19:50:27,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-10-14 19:50:27,530 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 332 flow. Second operand 7 states and 69 transitions. [2024-10-14 19:50:27,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 589 flow [2024-10-14 19:50:27,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 547 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-14 19:50:27,535 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 392 flow [2024-10-14 19:50:27,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=392, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-10-14 19:50:27,536 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2024-10-14 19:50:27,536 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 392 flow [2024-10-14 19:50:27,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2024-10-14 19:50:27,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:27,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:27,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 19:50:27,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:27,738 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:27,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:27,738 INFO L85 PathProgramCache]: Analyzing trace with hash -376227406, now seen corresponding path program 4 times [2024-10-14 19:50:27,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:27,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593096894] [2024-10-14 19:50:27,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:27,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:27,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:27,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593096894] [2024-10-14 19:50:27,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593096894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:27,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:27,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:27,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088135824] [2024-10-14 19:50:27,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:27,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:27,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:27,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:27,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:27,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:27,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 392 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:27,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:27,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:27,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:27,916 INFO L124 PetriNetUnfolderBase]: 107/195 cut-off events. [2024-10-14 19:50:27,916 INFO L125 PetriNetUnfolderBase]: For 822/822 co-relation queries the response was YES. [2024-10-14 19:50:27,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 195 events. 107/195 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 607 event pairs, 32 based on Foata normal form. 2/197 useless extension candidates. Maximal degree in co-relation 817. Up to 154 conditions per place. [2024-10-14 19:50:27,918 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 34 selfloop transitions, 15 changer transitions 2/52 dead transitions. [2024-10-14 19:50:27,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 531 flow [2024-10-14 19:50:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:27,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-10-14 19:50:27,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-10-14 19:50:27,919 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 392 flow. Second operand 5 states and 48 transitions. [2024-10-14 19:50:27,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 531 flow [2024-10-14 19:50:27,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 475 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-10-14 19:50:27,923 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 357 flow [2024-10-14 19:50:27,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=357, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-10-14 19:50:27,924 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 32 predicate places. [2024-10-14 19:50:27,924 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 357 flow [2024-10-14 19:50:27,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:27,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:27,925 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:27,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 19:50:27,925 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:27,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:27,925 INFO L85 PathProgramCache]: Analyzing trace with hash -425271452, now seen corresponding path program 5 times [2024-10-14 19:50:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:27,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124865181] [2024-10-14 19:50:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:27,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:27,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:27,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124865181] [2024-10-14 19:50:27,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124865181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:27,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643796832] [2024-10-14 19:50:27,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:50:27,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:27,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:27,980 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:27,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 19:50:28,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:28,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:28,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:50:28,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:28,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:28,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643796832] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:28,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:28,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 19:50:28,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631292574] [2024-10-14 19:50:28,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:28,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:50:28,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:28,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:50:28,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:50:28,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:28,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 357 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:28,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:28,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:28,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:28,261 INFO L124 PetriNetUnfolderBase]: 108/199 cut-off events. [2024-10-14 19:50:28,261 INFO L125 PetriNetUnfolderBase]: For 598/598 co-relation queries the response was YES. [2024-10-14 19:50:28,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 199 events. 108/199 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 618 event pairs, 17 based on Foata normal form. 5/204 useless extension candidates. Maximal degree in co-relation 768. Up to 93 conditions per place. [2024-10-14 19:50:28,263 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 41 selfloop transitions, 27 changer transitions 0/69 dead transitions. [2024-10-14 19:50:28,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 612 flow [2024-10-14 19:50:28,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:50:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:50:28,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2024-10-14 19:50:28,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-10-14 19:50:28,264 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 357 flow. Second operand 10 states and 91 transitions. [2024-10-14 19:50:28,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 612 flow [2024-10-14 19:50:28,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 582 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:50:28,268 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 422 flow [2024-10-14 19:50:28,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=422, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-10-14 19:50:28,269 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-10-14 19:50:28,270 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 422 flow [2024-10-14 19:50:28,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:28,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:28,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:28,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:28,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:28,475 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:28,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:28,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2070215271, now seen corresponding path program 4 times [2024-10-14 19:50:28,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:28,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31955735] [2024-10-14 19:50:28,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:28,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:28,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:28,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31955735] [2024-10-14 19:50:28,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31955735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:28,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:28,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:28,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61518068] [2024-10-14 19:50:28,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:28,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:28,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:28,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:28,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:28,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:28,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 422 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:28,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:28,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:28,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:28,621 INFO L124 PetriNetUnfolderBase]: 114/209 cut-off events. [2024-10-14 19:50:28,622 INFO L125 PetriNetUnfolderBase]: For 734/734 co-relation queries the response was YES. [2024-10-14 19:50:28,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 209 events. 114/209 cut-off events. For 734/734 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 657 event pairs, 32 based on Foata normal form. 4/213 useless extension candidates. Maximal degree in co-relation 987. Up to 165 conditions per place. [2024-10-14 19:50:28,624 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 42 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-10-14 19:50:28,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 604 flow [2024-10-14 19:50:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-10-14 19:50:28,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-14 19:50:28,625 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 422 flow. Second operand 5 states and 50 transitions. [2024-10-14 19:50:28,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 604 flow [2024-10-14 19:50:28,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 534 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-10-14 19:50:28,630 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 395 flow [2024-10-14 19:50:28,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-10-14 19:50:28,630 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 38 predicate places. [2024-10-14 19:50:28,631 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 395 flow [2024-10-14 19:50:28,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:28,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:28,631 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:28,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 19:50:28,631 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:28,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:28,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1295731652, now seen corresponding path program 6 times [2024-10-14 19:50:28,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:28,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794376162] [2024-10-14 19:50:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:28,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:28,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:28,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794376162] [2024-10-14 19:50:28,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794376162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:28,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:28,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:28,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338585955] [2024-10-14 19:50:28,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:28,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:28,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:28,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:28,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:28,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:28,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 395 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:28,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:28,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:28,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:28,802 INFO L124 PetriNetUnfolderBase]: 110/197 cut-off events. [2024-10-14 19:50:28,803 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-10-14 19:50:28,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 197 events. 110/197 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 595 event pairs, 29 based on Foata normal form. 2/199 useless extension candidates. Maximal degree in co-relation 896. Up to 143 conditions per place. [2024-10-14 19:50:28,805 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 32 selfloop transitions, 19 changer transitions 2/54 dead transitions. [2024-10-14 19:50:28,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 509 flow [2024-10-14 19:50:28,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:28,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:28,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-10-14 19:50:28,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-10-14 19:50:28,807 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 395 flow. Second operand 5 states and 47 transitions. [2024-10-14 19:50:28,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 509 flow [2024-10-14 19:50:28,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 473 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-14 19:50:28,812 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 378 flow [2024-10-14 19:50:28,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-10-14 19:50:28,813 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-10-14 19:50:28,813 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 378 flow [2024-10-14 19:50:28,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:28,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:28,813 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:28,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 19:50:28,813 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:28,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:28,814 INFO L85 PathProgramCache]: Analyzing trace with hash -350969669, now seen corresponding path program 5 times [2024-10-14 19:50:28,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:28,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30443044] [2024-10-14 19:50:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:28,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:28,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:28,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:28,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30443044] [2024-10-14 19:50:28,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30443044] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:28,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646987218] [2024-10-14 19:50:28,912 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:50:28,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:28,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:28,914 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:28,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 19:50:28,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:28,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:28,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 19:50:28,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:29,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:29,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646987218] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:29,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:29,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 19:50:29,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463846191] [2024-10-14 19:50:29,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:29,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:50:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:50:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:50:29,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:29,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:29,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:29,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:29,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:29,169 INFO L124 PetriNetUnfolderBase]: 111/200 cut-off events. [2024-10-14 19:50:29,169 INFO L125 PetriNetUnfolderBase]: For 535/535 co-relation queries the response was YES. [2024-10-14 19:50:29,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 200 events. 111/200 cut-off events. For 535/535 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 615 event pairs, 15 based on Foata normal form. 4/204 useless extension candidates. Maximal degree in co-relation 856. Up to 72 conditions per place. [2024-10-14 19:50:29,171 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 30 changer transitions 0/69 dead transitions. [2024-10-14 19:50:29,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 626 flow [2024-10-14 19:50:29,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:50:29,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:50:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 87 transitions. [2024-10-14 19:50:29,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-10-14 19:50:29,173 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 378 flow. Second operand 10 states and 87 transitions. [2024-10-14 19:50:29,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 626 flow [2024-10-14 19:50:29,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 572 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 19:50:29,177 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 437 flow [2024-10-14 19:50:29,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=437, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2024-10-14 19:50:29,178 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 42 predicate places. [2024-10-14 19:50:29,178 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 437 flow [2024-10-14 19:50:29,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:29,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:29,179 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:29,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 19:50:29,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 19:50:29,380 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:29,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:29,380 INFO L85 PathProgramCache]: Analyzing trace with hash -243034563, now seen corresponding path program 6 times [2024-10-14 19:50:29,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:29,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192916767] [2024-10-14 19:50:29,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:29,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:29,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:29,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192916767] [2024-10-14 19:50:29,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192916767] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:50:29,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:50:29,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:50:29,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886620884] [2024-10-14 19:50:29,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:50:29,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:50:29,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:29,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:50:29,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:50:29,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:29,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 437 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:29,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:29,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:29,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:29,512 INFO L124 PetriNetUnfolderBase]: 104/184 cut-off events. [2024-10-14 19:50:29,513 INFO L125 PetriNetUnfolderBase]: For 551/551 co-relation queries the response was YES. [2024-10-14 19:50:29,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 184 events. 104/184 cut-off events. For 551/551 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 543 event pairs, 26 based on Foata normal form. 3/187 useless extension candidates. Maximal degree in co-relation 861. Up to 134 conditions per place. [2024-10-14 19:50:29,515 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 37 selfloop transitions, 17 changer transitions 3/58 dead transitions. [2024-10-14 19:50:29,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 563 flow [2024-10-14 19:50:29,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:50:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:50:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-10-14 19:50:29,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-10-14 19:50:29,516 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 437 flow. Second operand 5 states and 47 transitions. [2024-10-14 19:50:29,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 563 flow [2024-10-14 19:50:29,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 473 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-10-14 19:50:29,520 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 362 flow [2024-10-14 19:50:29,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-10-14 19:50:29,520 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-10-14 19:50:29,520 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 362 flow [2024-10-14 19:50:29,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:29,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:29,521 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:29,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 19:50:29,521 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:29,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:29,522 INFO L85 PathProgramCache]: Analyzing trace with hash -884107482, now seen corresponding path program 1 times [2024-10-14 19:50:29,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:29,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910625993] [2024-10-14 19:50:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:29,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:29,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:29,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910625993] [2024-10-14 19:50:29,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910625993] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:29,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811106829] [2024-10-14 19:50:29,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:29,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:29,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:29,720 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:29,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 19:50:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:29,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:50:29,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:29,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:30,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811106829] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:30,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:30,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-14 19:50:30,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855869093] [2024-10-14 19:50:30,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:30,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:30,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:30,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:30,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:30,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:30,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 362 flow. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:30,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:30,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:30,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:30,245 INFO L124 PetriNetUnfolderBase]: 152/279 cut-off events. [2024-10-14 19:50:30,245 INFO L125 PetriNetUnfolderBase]: For 757/757 co-relation queries the response was YES. [2024-10-14 19:50:30,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 279 events. 152/279 cut-off events. For 757/757 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 980 event pairs, 13 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 1210. Up to 173 conditions per place. [2024-10-14 19:50:30,248 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 65 selfloop transitions, 19 changer transitions 4/89 dead transitions. [2024-10-14 19:50:30,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 755 flow [2024-10-14 19:50:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:50:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:50:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-10-14 19:50:30,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-14 19:50:30,249 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 362 flow. Second operand 7 states and 75 transitions. [2024-10-14 19:50:30,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 755 flow [2024-10-14 19:50:30,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 705 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:50:30,254 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 494 flow [2024-10-14 19:50:30,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-10-14 19:50:30,254 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 43 predicate places. [2024-10-14 19:50:30,254 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 494 flow [2024-10-14 19:50:30,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:30,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:30,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:30,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:30,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 19:50:30,460 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:30,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:30,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1058757058, now seen corresponding path program 2 times [2024-10-14 19:50:30,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:30,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720294555] [2024-10-14 19:50:30,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:30,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:30,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720294555] [2024-10-14 19:50:30,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720294555] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163071883] [2024-10-14 19:50:30,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:50:30,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:30,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:30,671 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:30,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 19:50:30,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:30,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:30,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:50:30,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:30,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:31,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163071883] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:31,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:31,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-14 19:50:31,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089638115] [2024-10-14 19:50:31,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:31,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:31,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:31,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:31,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:31,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:31,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 494 flow. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:31,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:31,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:31,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:31,232 INFO L124 PetriNetUnfolderBase]: 150/271 cut-off events. [2024-10-14 19:50:31,232 INFO L125 PetriNetUnfolderBase]: For 885/885 co-relation queries the response was YES. [2024-10-14 19:50:31,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 271 events. 150/271 cut-off events. For 885/885 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 935 event pairs, 13 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 1318. Up to 193 conditions per place. [2024-10-14 19:50:31,237 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 61 selfloop transitions, 20 changer transitions 4/86 dead transitions. [2024-10-14 19:50:31,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 782 flow [2024-10-14 19:50:31,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:50:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:50:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-10-14 19:50:31,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-14 19:50:31,238 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 494 flow. Second operand 7 states and 70 transitions. [2024-10-14 19:50:31,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 782 flow [2024-10-14 19:50:31,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 734 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-10-14 19:50:31,245 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 564 flow [2024-10-14 19:50:31,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=564, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-10-14 19:50:31,247 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 48 predicate places. [2024-10-14 19:50:31,248 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 564 flow [2024-10-14 19:50:31,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:31,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:31,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:31,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 19:50:31,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:31,449 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:31,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash -268386566, now seen corresponding path program 3 times [2024-10-14 19:50:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:31,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280830028] [2024-10-14 19:50:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:31,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:31,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:31,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280830028] [2024-10-14 19:50:31,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280830028] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:31,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703375519] [2024-10-14 19:50:31,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:50:31,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:31,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:31,650 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:31,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 19:50:31,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 19:50:31,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:31,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:50:31,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:31,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:31,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703375519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:31,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:31,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-14 19:50:31,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625385995] [2024-10-14 19:50:31,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:31,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:31,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:31,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:31,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:31,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:31,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 564 flow. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 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) [2024-10-14 19:50:31,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:31,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:31,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:32,133 INFO L124 PetriNetUnfolderBase]: 148/263 cut-off events. [2024-10-14 19:50:32,133 INFO L125 PetriNetUnfolderBase]: For 901/901 co-relation queries the response was YES. [2024-10-14 19:50:32,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 263 events. 148/263 cut-off events. For 901/901 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 891 event pairs, 13 based on Foata normal form. 1/264 useless extension candidates. Maximal degree in co-relation 1316. Up to 173 conditions per place. [2024-10-14 19:50:32,136 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 60 selfloop transitions, 21 changer transitions 4/86 dead transitions. [2024-10-14 19:50:32,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 816 flow [2024-10-14 19:50:32,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:50:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:50:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-10-14 19:50:32,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-14 19:50:32,140 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 564 flow. Second operand 7 states and 70 transitions. [2024-10-14 19:50:32,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 816 flow [2024-10-14 19:50:32,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 774 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-14 19:50:32,146 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 604 flow [2024-10-14 19:50:32,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=604, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-10-14 19:50:32,147 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 52 predicate places. [2024-10-14 19:50:32,147 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 604 flow [2024-10-14 19:50:32,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 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) [2024-10-14 19:50:32,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:32,147 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:32,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:32,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 19:50:32,352 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:32,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash 465017658, now seen corresponding path program 4 times [2024-10-14 19:50:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:32,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062824060] [2024-10-14 19:50:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:32,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:32,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:32,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062824060] [2024-10-14 19:50:32,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062824060] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:32,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647042934] [2024-10-14 19:50:32,547 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:50:32,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:32,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:32,549 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:32,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 19:50:32,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:50:32,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:32,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:50:32,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:32,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:32,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647042934] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:32,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:32,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-14 19:50:32,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575915657] [2024-10-14 19:50:32,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:32,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:32,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:32,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:32,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:32,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:32,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 604 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:32,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:32,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:32,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:33,059 INFO L124 PetriNetUnfolderBase]: 173/306 cut-off events. [2024-10-14 19:50:33,059 INFO L125 PetriNetUnfolderBase]: For 1112/1112 co-relation queries the response was YES. [2024-10-14 19:50:33,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1575 conditions, 306 events. 173/306 cut-off events. For 1112/1112 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1098 event pairs, 12 based on Foata normal form. 1/307 useless extension candidates. Maximal degree in co-relation 1545. Up to 247 conditions per place. [2024-10-14 19:50:33,065 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 70 selfloop transitions, 19 changer transitions 4/94 dead transitions. [2024-10-14 19:50:33,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 94 transitions, 925 flow [2024-10-14 19:50:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:50:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:50:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2024-10-14 19:50:33,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-10-14 19:50:33,067 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 604 flow. Second operand 7 states and 64 transitions. [2024-10-14 19:50:33,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 94 transitions, 925 flow [2024-10-14 19:50:33,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 94 transitions, 868 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-10-14 19:50:33,075 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 719 flow [2024-10-14 19:50:33,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=719, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-10-14 19:50:33,078 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 57 predicate places. [2024-10-14 19:50:33,078 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 719 flow [2024-10-14 19:50:33,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:33,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:33,078 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:33,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 19:50:33,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 19:50:33,279 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:33,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1335848292, now seen corresponding path program 5 times [2024-10-14 19:50:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:33,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006074466] [2024-10-14 19:50:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:33,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:33,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:33,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006074466] [2024-10-14 19:50:33,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006074466] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:33,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692804044] [2024-10-14 19:50:33,467 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:50:33,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:33,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:33,469 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:33,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 19:50:33,531 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-14 19:50:33,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:33,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:50:33,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:33,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:33,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692804044] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:33,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:33,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-14 19:50:33,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862040385] [2024-10-14 19:50:33,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:33,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:33,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:33,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:33,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:33,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:33,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 719 flow. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:33,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:33,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:33,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:33,949 INFO L124 PetriNetUnfolderBase]: 185/331 cut-off events. [2024-10-14 19:50:33,949 INFO L125 PetriNetUnfolderBase]: For 1341/1341 co-relation queries the response was YES. [2024-10-14 19:50:33,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 331 events. 185/331 cut-off events. For 1341/1341 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1231 event pairs, 12 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 1746. Up to 250 conditions per place. [2024-10-14 19:50:33,955 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 77 selfloop transitions, 20 changer transitions 4/102 dead transitions. [2024-10-14 19:50:33,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 102 transitions, 1055 flow [2024-10-14 19:50:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:50:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:50:33,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-10-14 19:50:33,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-10-14 19:50:33,958 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 719 flow. Second operand 7 states and 69 transitions. [2024-10-14 19:50:33,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 102 transitions, 1055 flow [2024-10-14 19:50:33,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 102 transitions, 1006 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:33,965 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 790 flow [2024-10-14 19:50:33,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=790, PETRI_PLACES=85, PETRI_TRANSITIONS=86} [2024-10-14 19:50:33,966 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 63 predicate places. [2024-10-14 19:50:33,966 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 790 flow [2024-10-14 19:50:33,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:33,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:33,967 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:33,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:34,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:34,167 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:34,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:34,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1252731402, now seen corresponding path program 6 times [2024-10-14 19:50:34,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:34,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082108824] [2024-10-14 19:50:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:34,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:34,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:34,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082108824] [2024-10-14 19:50:34,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082108824] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:34,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737193644] [2024-10-14 19:50:34,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:50:34,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:34,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:34,373 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:34,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 19:50:34,439 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-14 19:50:34,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:34,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:50:34,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:34,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:34,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737193644] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:34,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:34,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-14 19:50:34,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035182733] [2024-10-14 19:50:34,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:34,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:50:34,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:34,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:50:34,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:50:34,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:34,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 86 transitions, 790 flow. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:34,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:34,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:34,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:34,890 INFO L124 PetriNetUnfolderBase]: 183/323 cut-off events. [2024-10-14 19:50:34,891 INFO L125 PetriNetUnfolderBase]: For 1616/1616 co-relation queries the response was YES. [2024-10-14 19:50:34,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 323 events. 183/323 cut-off events. For 1616/1616 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1182 event pairs, 12 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1751. Up to 250 conditions per place. [2024-10-14 19:50:34,894 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 75 selfloop transitions, 21 changer transitions 4/101 dead transitions. [2024-10-14 19:50:34,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 101 transitions, 1078 flow [2024-10-14 19:50:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:50:34,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:50:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2024-10-14 19:50:34,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-10-14 19:50:34,895 INFO L175 Difference]: Start difference. First operand has 85 places, 86 transitions, 790 flow. Second operand 7 states and 67 transitions. [2024-10-14 19:50:34,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 101 transitions, 1078 flow [2024-10-14 19:50:34,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 101 transitions, 1006 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-10-14 19:50:34,903 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 816 flow [2024-10-14 19:50:34,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=816, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-10-14 19:50:34,904 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 68 predicate places. [2024-10-14 19:50:34,904 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 816 flow [2024-10-14 19:50:34,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:34,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:34,905 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:34,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-14 19:50:35,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:35,105 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:35,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:35,106 INFO L85 PathProgramCache]: Analyzing trace with hash -526255113, now seen corresponding path program 7 times [2024-10-14 19:50:35,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:35,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387329502] [2024-10-14 19:50:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:35,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:35,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:35,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387329502] [2024-10-14 19:50:35,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387329502] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:35,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479005170] [2024-10-14 19:50:35,185 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:50:35,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:35,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:35,187 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:35,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 19:50:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:35,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:35,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:35,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:35,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479005170] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:35,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:35,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-14 19:50:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182723126] [2024-10-14 19:50:35,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:35,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:50:35,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:35,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:50:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:50:35,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:35,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 816 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-10-14 19:50:35,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:35,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:35,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:35,576 INFO L124 PetriNetUnfolderBase]: 210/369 cut-off events. [2024-10-14 19:50:35,577 INFO L125 PetriNetUnfolderBase]: For 2177/2177 co-relation queries the response was YES. [2024-10-14 19:50:35,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 369 events. 210/369 cut-off events. For 2177/2177 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1403 event pairs, 20 based on Foata normal form. 5/374 useless extension candidates. Maximal degree in co-relation 2036. Up to 101 conditions per place. [2024-10-14 19:50:35,581 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 80 selfloop transitions, 50 changer transitions 0/131 dead transitions. [2024-10-14 19:50:35,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 131 transitions, 1433 flow [2024-10-14 19:50:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:50:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:50:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-10-14 19:50:35,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-14 19:50:35,582 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 816 flow. Second operand 10 states and 100 transitions. [2024-10-14 19:50:35,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 131 transitions, 1433 flow [2024-10-14 19:50:35,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 1366 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-14 19:50:35,592 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 1065 flow [2024-10-14 19:50:35,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1065, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2024-10-14 19:50:35,593 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 79 predicate places. [2024-10-14 19:50:35,593 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 1065 flow [2024-10-14 19:50:35,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 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) [2024-10-14 19:50:35,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:35,593 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:35,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-14 19:50:35,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-14 19:50:35,794 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:35,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash 37067966, now seen corresponding path program 8 times [2024-10-14 19:50:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:35,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997337848] [2024-10-14 19:50:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:35,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997337848] [2024-10-14 19:50:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997337848] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016840141] [2024-10-14 19:50:35,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:50:35,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:35,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:35,867 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:35,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 19:50:35,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:35,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:35,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:35,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:35,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:36,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016840141] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:36,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:36,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-14 19:50:36,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374287746] [2024-10-14 19:50:36,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:36,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:50:36,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:36,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:50:36,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:50:36,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:36,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 1065 flow. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 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) [2024-10-14 19:50:36,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:36,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:36,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:36,167 INFO L124 PetriNetUnfolderBase]: 211/376 cut-off events. [2024-10-14 19:50:36,168 INFO L125 PetriNetUnfolderBase]: For 3089/3089 co-relation queries the response was YES. [2024-10-14 19:50:36,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2353 conditions, 376 events. 211/376 cut-off events. For 3089/3089 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1478 event pairs, 35 based on Foata normal form. 3/379 useless extension candidates. Maximal degree in co-relation 2270. Up to 165 conditions per place. [2024-10-14 19:50:36,172 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 79 selfloop transitions, 34 changer transitions 9/123 dead transitions. [2024-10-14 19:50:36,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 123 transitions, 1508 flow [2024-10-14 19:50:36,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:50:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:50:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-10-14 19:50:36,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-10-14 19:50:36,173 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 1065 flow. Second operand 7 states and 72 transitions. [2024-10-14 19:50:36,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 123 transitions, 1508 flow [2024-10-14 19:50:36,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 123 transitions, 1421 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-10-14 19:50:36,186 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 1027 flow [2024-10-14 19:50:36,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1027, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2024-10-14 19:50:36,186 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 85 predicate places. [2024-10-14 19:50:36,186 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 1027 flow [2024-10-14 19:50:36,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 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) [2024-10-14 19:50:36,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:36,187 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:36,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:36,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-14 19:50:36,392 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:36,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash 99726495, now seen corresponding path program 9 times [2024-10-14 19:50:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:36,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476115984] [2024-10-14 19:50:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:36,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:36,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476115984] [2024-10-14 19:50:36,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476115984] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:36,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410511542] [2024-10-14 19:50:36,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:50:36,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:36,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:36,502 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:36,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 19:50:36,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:50:36,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:36,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:36,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:36,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:36,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410511542] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:36,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:36,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-14 19:50:36,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842008735] [2024-10-14 19:50:36,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:36,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:36,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:36,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:36,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:36,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:36,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 1027 flow. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:36,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:36,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:36,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:36,972 INFO L124 PetriNetUnfolderBase]: 249/432 cut-off events. [2024-10-14 19:50:36,972 INFO L125 PetriNetUnfolderBase]: For 4341/4341 co-relation queries the response was YES. [2024-10-14 19:50:36,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 432 events. 249/432 cut-off events. For 4341/4341 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1663 event pairs, 28 based on Foata normal form. 17/449 useless extension candidates. Maximal degree in co-relation 2641. Up to 143 conditions per place. [2024-10-14 19:50:36,977 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 81 selfloop transitions, 64 changer transitions 0/146 dead transitions. [2024-10-14 19:50:36,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 146 transitions, 1797 flow [2024-10-14 19:50:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 19:50:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 19:50:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 126 transitions. [2024-10-14 19:50:36,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-14 19:50:36,979 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 1027 flow. Second operand 14 states and 126 transitions. [2024-10-14 19:50:36,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 146 transitions, 1797 flow [2024-10-14 19:50:36,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 146 transitions, 1719 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-14 19:50:36,991 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 1483 flow [2024-10-14 19:50:36,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1483, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2024-10-14 19:50:36,992 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 97 predicate places. [2024-10-14 19:50:36,992 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 1483 flow [2024-10-14 19:50:36,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:36,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:36,993 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:37,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-14 19:50:37,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:37,197 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:37,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:37,197 INFO L85 PathProgramCache]: Analyzing trace with hash 555431037, now seen corresponding path program 10 times [2024-10-14 19:50:37,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:37,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373544809] [2024-10-14 19:50:37,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:37,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373544809] [2024-10-14 19:50:37,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373544809] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494177947] [2024-10-14 19:50:37,263 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:50:37,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:37,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:37,265 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:37,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 19:50:37,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:50:37,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:37,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:37,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:37,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:37,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494177947] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:37,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:37,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:50:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587873125] [2024-10-14 19:50:37,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:37,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:37,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:37,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:37,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:37,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:37,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 1483 flow. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:37,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:37,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:37,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:37,754 INFO L124 PetriNetUnfolderBase]: 300/515 cut-off events. [2024-10-14 19:50:37,755 INFO L125 PetriNetUnfolderBase]: For 8634/8634 co-relation queries the response was YES. [2024-10-14 19:50:37,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3709 conditions, 515 events. 300/515 cut-off events. For 8634/8634 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2044 event pairs, 27 based on Foata normal form. 12/527 useless extension candidates. Maximal degree in co-relation 3616. Up to 177 conditions per place. [2024-10-14 19:50:37,761 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 79 selfloop transitions, 94 changer transitions 0/174 dead transitions. [2024-10-14 19:50:37,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 174 transitions, 2495 flow [2024-10-14 19:50:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 19:50:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 19:50:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 143 transitions. [2024-10-14 19:50:37,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-10-14 19:50:37,763 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 1483 flow. Second operand 16 states and 143 transitions. [2024-10-14 19:50:37,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 174 transitions, 2495 flow [2024-10-14 19:50:37,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 174 transitions, 2211 flow, removed 133 selfloop flow, removed 3 redundant places. [2024-10-14 19:50:37,815 INFO L231 Difference]: Finished difference. Result has 139 places, 146 transitions, 1984 flow [2024-10-14 19:50:37,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1984, PETRI_PLACES=139, PETRI_TRANSITIONS=146} [2024-10-14 19:50:37,816 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 117 predicate places. [2024-10-14 19:50:37,816 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 146 transitions, 1984 flow [2024-10-14 19:50:37,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:37,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:37,817 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:37,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-14 19:50:38,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:38,021 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:38,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:38,022 INFO L85 PathProgramCache]: Analyzing trace with hash 963285089, now seen corresponding path program 11 times [2024-10-14 19:50:38,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:38,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121979005] [2024-10-14 19:50:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:38,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:38,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:38,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121979005] [2024-10-14 19:50:38,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121979005] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:38,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64052853] [2024-10-14 19:50:38,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:50:38,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:38,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:38,103 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:38,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 19:50:38,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-14 19:50:38,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:38,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:38,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:38,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:38,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64052853] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:38,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:38,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:50:38,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923314213] [2024-10-14 19:50:38,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:38,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:38,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:38,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:38,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:38,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 146 transitions, 1984 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:38,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:38,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:38,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:38,511 INFO L124 PetriNetUnfolderBase]: 300/519 cut-off events. [2024-10-14 19:50:38,512 INFO L125 PetriNetUnfolderBase]: For 8573/8573 co-relation queries the response was YES. [2024-10-14 19:50:38,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3932 conditions, 519 events. 300/519 cut-off events. For 8573/8573 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2116 event pairs, 43 based on Foata normal form. 4/523 useless extension candidates. Maximal degree in co-relation 3826. Up to 233 conditions per place. [2024-10-14 19:50:38,519 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 88 selfloop transitions, 79 changer transitions 2/170 dead transitions. [2024-10-14 19:50:38,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 170 transitions, 2569 flow [2024-10-14 19:50:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 19:50:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 19:50:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-10-14 19:50:38,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4346153846153846 [2024-10-14 19:50:38,521 INFO L175 Difference]: Start difference. First operand has 139 places, 146 transitions, 1984 flow. Second operand 13 states and 113 transitions. [2024-10-14 19:50:38,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 170 transitions, 2569 flow [2024-10-14 19:50:38,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 170 transitions, 2251 flow, removed 115 selfloop flow, removed 6 redundant places. [2024-10-14 19:50:38,557 INFO L231 Difference]: Finished difference. Result has 147 places, 146 transitions, 1836 flow [2024-10-14 19:50:38,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1836, PETRI_PLACES=147, PETRI_TRANSITIONS=146} [2024-10-14 19:50:38,557 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 125 predicate places. [2024-10-14 19:50:38,558 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 146 transitions, 1836 flow [2024-10-14 19:50:38,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:38,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:38,558 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:38,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-14 19:50:38,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-14 19:50:38,759 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:38,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:38,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1649435364, now seen corresponding path program 12 times [2024-10-14 19:50:38,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:38,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935489438] [2024-10-14 19:50:38,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:38,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:38,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935489438] [2024-10-14 19:50:38,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935489438] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770516323] [2024-10-14 19:50:38,833 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:50:38,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:38,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:38,835 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:38,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-14 19:50:38,905 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-14 19:50:38,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:38,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:38,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:38,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770516323] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:38,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:38,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:50:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470847721] [2024-10-14 19:50:38,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:38,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:38,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:38,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:38,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:38,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 146 transitions, 1836 flow. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:38,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:38,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:38,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:39,232 INFO L124 PetriNetUnfolderBase]: 346/589 cut-off events. [2024-10-14 19:50:39,233 INFO L125 PetriNetUnfolderBase]: For 12313/12313 co-relation queries the response was YES. [2024-10-14 19:50:39,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 589 events. 346/589 cut-off events. For 12313/12313 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2428 event pairs, 67 based on Foata normal form. 12/601 useless extension candidates. Maximal degree in co-relation 4492. Up to 396 conditions per place. [2024-10-14 19:50:39,242 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 128 selfloop transitions, 65 changer transitions 2/196 dead transitions. [2024-10-14 19:50:39,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 196 transitions, 3007 flow [2024-10-14 19:50:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 19:50:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 19:50:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-10-14 19:50:39,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-10-14 19:50:39,243 INFO L175 Difference]: Start difference. First operand has 147 places, 146 transitions, 1836 flow. Second operand 12 states and 111 transitions. [2024-10-14 19:50:39,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 196 transitions, 3007 flow [2024-10-14 19:50:39,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 196 transitions, 2791 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-10-14 19:50:39,279 INFO L231 Difference]: Finished difference. Result has 151 places, 170 transitions, 2422 flow [2024-10-14 19:50:39,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2422, PETRI_PLACES=151, PETRI_TRANSITIONS=170} [2024-10-14 19:50:39,280 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 129 predicate places. [2024-10-14 19:50:39,280 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 170 transitions, 2422 flow [2024-10-14 19:50:39,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:39,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:39,281 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:39,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-14 19:50:39,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-14 19:50:39,481 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:39,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:39,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1904479196, now seen corresponding path program 13 times [2024-10-14 19:50:39,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:39,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971698586] [2024-10-14 19:50:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:39,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:39,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:39,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971698586] [2024-10-14 19:50:39,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971698586] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:39,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079780896] [2024-10-14 19:50:39,552 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:50:39,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:39,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:39,555 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:39,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-14 19:50:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:39,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:39,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:39,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:39,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:39,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079780896] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:39,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:39,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:50:39,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327977755] [2024-10-14 19:50:39,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:39,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:39,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:39,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:39,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:39,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:39,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 170 transitions, 2422 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:39,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:39,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:39,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:40,023 INFO L124 PetriNetUnfolderBase]: 347/587 cut-off events. [2024-10-14 19:50:40,024 INFO L125 PetriNetUnfolderBase]: For 10832/10832 co-relation queries the response was YES. [2024-10-14 19:50:40,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4584 conditions, 587 events. 347/587 cut-off events. For 10832/10832 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2377 event pairs, 70 based on Foata normal form. 8/595 useless extension candidates. Maximal degree in co-relation 4468. Up to 403 conditions per place. [2024-10-14 19:50:40,033 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 128 selfloop transitions, 71 changer transitions 0/200 dead transitions. [2024-10-14 19:50:40,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 200 transitions, 3044 flow [2024-10-14 19:50:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 19:50:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 19:50:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 146 transitions. [2024-10-14 19:50:40,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4294117647058823 [2024-10-14 19:50:40,035 INFO L175 Difference]: Start difference. First operand has 151 places, 170 transitions, 2422 flow. Second operand 17 states and 146 transitions. [2024-10-14 19:50:40,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 200 transitions, 3044 flow [2024-10-14 19:50:40,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 200 transitions, 2629 flow, removed 167 selfloop flow, removed 4 redundant places. [2024-10-14 19:50:40,080 INFO L231 Difference]: Finished difference. Result has 166 places, 176 transitions, 2268 flow [2024-10-14 19:50:40,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2268, PETRI_PLACES=166, PETRI_TRANSITIONS=176} [2024-10-14 19:50:40,081 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 144 predicate places. [2024-10-14 19:50:40,081 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 176 transitions, 2268 flow [2024-10-14 19:50:40,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:40,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:40,081 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:40,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-14 19:50:40,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-14 19:50:40,282 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:40,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:40,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2129379204, now seen corresponding path program 14 times [2024-10-14 19:50:40,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:40,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123364835] [2024-10-14 19:50:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:40,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:40,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:40,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123364835] [2024-10-14 19:50:40,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123364835] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:40,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735448853] [2024-10-14 19:50:40,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:50:40,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:40,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:40,377 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:40,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-14 19:50:40,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:40,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:40,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:40,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:40,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735448853] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:40,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:40,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-14 19:50:40,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930868521] [2024-10-14 19:50:40,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:40,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:40,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:40,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:40,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:40,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:40,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 176 transitions, 2268 flow. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:40,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:40,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:40,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:40,720 INFO L124 PetriNetUnfolderBase]: 346/589 cut-off events. [2024-10-14 19:50:40,720 INFO L125 PetriNetUnfolderBase]: For 8205/8205 co-relation queries the response was YES. [2024-10-14 19:50:40,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4332 conditions, 589 events. 346/589 cut-off events. For 8205/8205 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2397 event pairs, 74 based on Foata normal form. 3/592 useless extension candidates. Maximal degree in co-relation 4213. Up to 422 conditions per place. [2024-10-14 19:50:40,728 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 138 selfloop transitions, 47 changer transitions 8/194 dead transitions. [2024-10-14 19:50:40,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 194 transitions, 2770 flow [2024-10-14 19:50:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:50:40,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:50:40,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-10-14 19:50:40,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-14 19:50:40,734 INFO L175 Difference]: Start difference. First operand has 166 places, 176 transitions, 2268 flow. Second operand 10 states and 90 transitions. [2024-10-14 19:50:40,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 194 transitions, 2770 flow [2024-10-14 19:50:40,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 194 transitions, 2549 flow, removed 43 selfloop flow, removed 12 redundant places. [2024-10-14 19:50:40,772 INFO L231 Difference]: Finished difference. Result has 164 places, 172 transitions, 2083 flow [2024-10-14 19:50:40,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2083, PETRI_PLACES=164, PETRI_TRANSITIONS=172} [2024-10-14 19:50:40,772 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 142 predicate places. [2024-10-14 19:50:40,772 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 172 transitions, 2083 flow [2024-10-14 19:50:40,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:40,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:40,773 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:40,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-14 19:50:40,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:40,973 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:40,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:40,974 INFO L85 PathProgramCache]: Analyzing trace with hash -2140594117, now seen corresponding path program 15 times [2024-10-14 19:50:40,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:40,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421397533] [2024-10-14 19:50:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:40,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:41,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:41,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421397533] [2024-10-14 19:50:41,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421397533] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:41,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129633690] [2024-10-14 19:50:41,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:50:41,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:41,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:41,042 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:41,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-14 19:50:41,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 19:50:41,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:41,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:41,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:41,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:41,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129633690] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:41,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:41,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-14 19:50:41,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651227371] [2024-10-14 19:50:41,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:41,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:41,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:41,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:41,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:41,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:41,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 172 transitions, 2083 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:41,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:41,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:41,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:41,528 INFO L124 PetriNetUnfolderBase]: 450/748 cut-off events. [2024-10-14 19:50:41,528 INFO L125 PetriNetUnfolderBase]: For 12567/12567 co-relation queries the response was YES. [2024-10-14 19:50:41,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5480 conditions, 748 events. 450/748 cut-off events. For 12567/12567 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3163 event pairs, 33 based on Foata normal form. 12/760 useless extension candidates. Maximal degree in co-relation 5398. Up to 242 conditions per place. [2024-10-14 19:50:41,543 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 100 selfloop transitions, 154 changer transitions 0/255 dead transitions. [2024-10-14 19:50:41,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 255 transitions, 3653 flow [2024-10-14 19:50:41,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 19:50:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 19:50:41,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 151 transitions. [2024-10-14 19:50:41,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4441176470588235 [2024-10-14 19:50:41,546 INFO L175 Difference]: Start difference. First operand has 164 places, 172 transitions, 2083 flow. Second operand 17 states and 151 transitions. [2024-10-14 19:50:41,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 255 transitions, 3653 flow [2024-10-14 19:50:41,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 255 transitions, 3532 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-10-14 19:50:41,585 INFO L231 Difference]: Finished difference. Result has 177 places, 228 transitions, 3384 flow [2024-10-14 19:50:41,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3384, PETRI_PLACES=177, PETRI_TRANSITIONS=228} [2024-10-14 19:50:41,588 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 155 predicate places. [2024-10-14 19:50:41,588 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 228 transitions, 3384 flow [2024-10-14 19:50:41,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:41,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:41,588 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:41,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:41,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-14 19:50:41,789 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:41,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:41,789 INFO L85 PathProgramCache]: Analyzing trace with hash -99297187, now seen corresponding path program 16 times [2024-10-14 19:50:41,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:41,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095078268] [2024-10-14 19:50:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:41,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:41,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095078268] [2024-10-14 19:50:41,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095078268] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:41,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176034049] [2024-10-14 19:50:41,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:50:41,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:41,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:41,863 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:41,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-14 19:50:41,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:50:41,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:41,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:41,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:41,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:50:42,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176034049] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:42,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:42,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-14 19:50:42,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983090523] [2024-10-14 19:50:42,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:42,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:42,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:42,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:42,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:42,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:42,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 228 transitions, 3384 flow. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:42,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:42,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:42,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:42,276 INFO L124 PetriNetUnfolderBase]: 450/752 cut-off events. [2024-10-14 19:50:42,276 INFO L125 PetriNetUnfolderBase]: For 14343/14343 co-relation queries the response was YES. [2024-10-14 19:50:42,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6211 conditions, 752 events. 450/752 cut-off events. For 14343/14343 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3225 event pairs, 53 based on Foata normal form. 4/756 useless extension candidates. Maximal degree in co-relation 6082. Up to 314 conditions per place. [2024-10-14 19:50:42,285 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 118 selfloop transitions, 130 changer transitions 2/251 dead transitions. [2024-10-14 19:50:42,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 251 transitions, 4112 flow [2024-10-14 19:50:42,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 19:50:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 19:50:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 122 transitions. [2024-10-14 19:50:42,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-10-14 19:50:42,287 INFO L175 Difference]: Start difference. First operand has 177 places, 228 transitions, 3384 flow. Second operand 14 states and 122 transitions. [2024-10-14 19:50:42,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 251 transitions, 4112 flow [2024-10-14 19:50:42,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 251 transitions, 3750 flow, removed 163 selfloop flow, removed 4 redundant places. [2024-10-14 19:50:42,389 INFO L231 Difference]: Finished difference. Result has 188 places, 228 transitions, 3295 flow [2024-10-14 19:50:42,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3295, PETRI_PLACES=188, PETRI_TRANSITIONS=228} [2024-10-14 19:50:42,390 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 166 predicate places. [2024-10-14 19:50:42,390 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 228 transitions, 3295 flow [2024-10-14 19:50:42,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:42,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:42,390 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:42,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-14 19:50:42,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:42,592 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:42,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:42,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1390107809, now seen corresponding path program 17 times [2024-10-14 19:50:42,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:42,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716974615] [2024-10-14 19:50:42,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:42,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:42,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:42,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716974615] [2024-10-14 19:50:42,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716974615] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:42,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161009587] [2024-10-14 19:50:42,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:50:42,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:42,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:42,684 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:42,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-14 19:50:42,741 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:42,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:42,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:42,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:42,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:42,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161009587] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:42,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:42,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-14 19:50:42,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056031609] [2024-10-14 19:50:42,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:42,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:50:42,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:42,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:50:42,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:50:42,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:42,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 228 transitions, 3295 flow. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2024-10-14 19:50:42,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:42,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:42,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:43,146 INFO L124 PetriNetUnfolderBase]: 492/814 cut-off events. [2024-10-14 19:50:43,147 INFO L125 PetriNetUnfolderBase]: For 14329/14329 co-relation queries the response was YES. [2024-10-14 19:50:43,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6575 conditions, 814 events. 492/814 cut-off events. For 14329/14329 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3510 event pairs, 54 based on Foata normal form. 4/818 useless extension candidates. Maximal degree in co-relation 6485. Up to 330 conditions per place. [2024-10-14 19:50:43,159 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 131 selfloop transitions, 140 changer transitions 4/276 dead transitions. [2024-10-14 19:50:43,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 276 transitions, 4445 flow [2024-10-14 19:50:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 19:50:43,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 19:50:43,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 126 transitions. [2024-10-14 19:50:43,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-10-14 19:50:43,161 INFO L175 Difference]: Start difference. First operand has 188 places, 228 transitions, 3295 flow. Second operand 15 states and 126 transitions. [2024-10-14 19:50:43,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 276 transitions, 4445 flow [2024-10-14 19:50:43,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 276 transitions, 4154 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-10-14 19:50:43,226 INFO L231 Difference]: Finished difference. Result has 195 places, 249 transitions, 3746 flow [2024-10-14 19:50:43,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3746, PETRI_PLACES=195, PETRI_TRANSITIONS=249} [2024-10-14 19:50:43,226 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 173 predicate places. [2024-10-14 19:50:43,227 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 249 transitions, 3746 flow [2024-10-14 19:50:43,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2024-10-14 19:50:43,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:43,227 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:43,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:43,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:43,428 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:43,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1176393603, now seen corresponding path program 18 times [2024-10-14 19:50:43,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:43,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616520990] [2024-10-14 19:50:43,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:43,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:43,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:43,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616520990] [2024-10-14 19:50:43,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616520990] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:43,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268111153] [2024-10-14 19:50:43,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:50:43,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:43,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:43,509 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:43,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-14 19:50:43,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-14 19:50:43,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:43,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:43,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:43,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:43,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268111153] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:43,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:43,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-14 19:50:43,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797870593] [2024-10-14 19:50:43,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:43,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:50:43,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:50:43,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:50:43,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:43,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 249 transitions, 3746 flow. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:43,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:43,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:43,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:44,084 INFO L124 PetriNetUnfolderBase]: 587/973 cut-off events. [2024-10-14 19:50:44,084 INFO L125 PetriNetUnfolderBase]: For 19818/19818 co-relation queries the response was YES. [2024-10-14 19:50:44,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8117 conditions, 973 events. 587/973 cut-off events. For 19818/19818 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4410 event pairs, 38 based on Foata normal form. 8/981 useless extension candidates. Maximal degree in co-relation 8021. Up to 325 conditions per place. [2024-10-14 19:50:44,095 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 164 selfloop transitions, 171 changer transitions 0/336 dead transitions. [2024-10-14 19:50:44,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 336 transitions, 5530 flow [2024-10-14 19:50:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 19:50:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-14 19:50:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 191 transitions. [2024-10-14 19:50:44,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4152173913043478 [2024-10-14 19:50:44,096 INFO L175 Difference]: Start difference. First operand has 195 places, 249 transitions, 3746 flow. Second operand 23 states and 191 transitions. [2024-10-14 19:50:44,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 336 transitions, 5530 flow [2024-10-14 19:50:44,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 336 transitions, 5320 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-10-14 19:50:44,153 INFO L231 Difference]: Finished difference. Result has 215 places, 299 transitions, 4900 flow [2024-10-14 19:50:44,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3559, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4900, PETRI_PLACES=215, PETRI_TRANSITIONS=299} [2024-10-14 19:50:44,154 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 193 predicate places. [2024-10-14 19:50:44,154 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 299 transitions, 4900 flow [2024-10-14 19:50:44,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:44,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:44,154 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:44,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-14 19:50:44,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:44,355 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:44,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:44,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1345896383, now seen corresponding path program 19 times [2024-10-14 19:50:44,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:44,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524935406] [2024-10-14 19:50:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:44,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:44,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:44,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524935406] [2024-10-14 19:50:44,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524935406] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:44,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847893488] [2024-10-14 19:50:44,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:50:44,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:44,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:44,438 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:44,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-14 19:50:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:44,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:44,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:44,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:44,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847893488] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:44,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:44,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-14 19:50:44,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464909256] [2024-10-14 19:50:44,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:44,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:50:44,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:44,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:50:44,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:50:44,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:44,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 299 transitions, 4900 flow. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:44,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:44,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:44,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:45,025 INFO L124 PetriNetUnfolderBase]: 632/1044 cut-off events. [2024-10-14 19:50:45,026 INFO L125 PetriNetUnfolderBase]: For 31386/31386 co-relation queries the response was YES. [2024-10-14 19:50:45,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9505 conditions, 1044 events. 632/1044 cut-off events. For 31386/31386 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4764 event pairs, 147 based on Foata normal form. 24/1068 useless extension candidates. Maximal degree in co-relation 9350. Up to 896 conditions per place. [2024-10-14 19:50:45,035 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 292 selfloop transitions, 59 changer transitions 0/352 dead transitions. [2024-10-14 19:50:45,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 352 transitions, 6572 flow [2024-10-14 19:50:45,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 19:50:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-14 19:50:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 164 transitions. [2024-10-14 19:50:45,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-10-14 19:50:45,036 INFO L175 Difference]: Start difference. First operand has 215 places, 299 transitions, 4900 flow. Second operand 19 states and 164 transitions. [2024-10-14 19:50:45,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 352 transitions, 6572 flow [2024-10-14 19:50:45,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 352 transitions, 6365 flow, removed 61 selfloop flow, removed 10 redundant places. [2024-10-14 19:50:45,109 INFO L231 Difference]: Finished difference. Result has 235 places, 324 transitions, 5667 flow [2024-10-14 19:50:45,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4693, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5667, PETRI_PLACES=235, PETRI_TRANSITIONS=324} [2024-10-14 19:50:45,110 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 213 predicate places. [2024-10-14 19:50:45,110 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 324 transitions, 5667 flow [2024-10-14 19:50:45,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:45,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:45,110 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:45,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:45,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:45,311 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:45,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1274077767, now seen corresponding path program 20 times [2024-10-14 19:50:45,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:45,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311300761] [2024-10-14 19:50:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:45,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:45,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:45,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311300761] [2024-10-14 19:50:45,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311300761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:45,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343028338] [2024-10-14 19:50:45,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:50:45,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:45,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:45,383 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:45,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-14 19:50:45,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:45,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:45,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:45,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:45,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:45,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343028338] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:45,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:45,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-14 19:50:45,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557220809] [2024-10-14 19:50:45,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:45,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:45,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:45,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:45,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:45,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:45,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 324 transitions, 5667 flow. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:45,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:45,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:45,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:45,790 INFO L124 PetriNetUnfolderBase]: 641/1059 cut-off events. [2024-10-14 19:50:45,790 INFO L125 PetriNetUnfolderBase]: For 32004/32004 co-relation queries the response was YES. [2024-10-14 19:50:45,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10123 conditions, 1059 events. 641/1059 cut-off events. For 32004/32004 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4863 event pairs, 152 based on Foata normal form. 4/1063 useless extension candidates. Maximal degree in co-relation 9955. Up to 924 conditions per place. [2024-10-14 19:50:45,802 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 284 selfloop transitions, 56 changer transitions 2/343 dead transitions. [2024-10-14 19:50:45,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 343 transitions, 6748 flow [2024-10-14 19:50:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:50:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:50:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-10-14 19:50:45,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-10-14 19:50:45,803 INFO L175 Difference]: Start difference. First operand has 235 places, 324 transitions, 5667 flow. Second operand 11 states and 94 transitions. [2024-10-14 19:50:45,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 343 transitions, 6748 flow [2024-10-14 19:50:45,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 343 transitions, 5977 flow, removed 365 selfloop flow, removed 8 redundant places. [2024-10-14 19:50:45,971 INFO L231 Difference]: Finished difference. Result has 238 places, 327 transitions, 5184 flow [2024-10-14 19:50:45,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4990, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5184, PETRI_PLACES=238, PETRI_TRANSITIONS=327} [2024-10-14 19:50:45,972 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 216 predicate places. [2024-10-14 19:50:45,972 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 327 transitions, 5184 flow [2024-10-14 19:50:45,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:45,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:45,972 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:45,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-10-14 19:50:46,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-14 19:50:46,173 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:46,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash -840836223, now seen corresponding path program 21 times [2024-10-14 19:50:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:46,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639930479] [2024-10-14 19:50:46,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:46,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:46,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639930479] [2024-10-14 19:50:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639930479] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014428725] [2024-10-14 19:50:46,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:50:46,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:46,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:46,251 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:46,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-14 19:50:46,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 19:50:46,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:46,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:46,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:46,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:46,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014428725] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:46,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:46,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-14 19:50:46,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34550160] [2024-10-14 19:50:46,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:46,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:46,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:46,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:46,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:46,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:46,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 327 transitions, 5184 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:46,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:46,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:46,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:46,836 INFO L124 PetriNetUnfolderBase]: 686/1126 cut-off events. [2024-10-14 19:50:46,836 INFO L125 PetriNetUnfolderBase]: For 43359/43359 co-relation queries the response was YES. [2024-10-14 19:50:46,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10411 conditions, 1126 events. 686/1126 cut-off events. For 43359/43359 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5209 event pairs, 149 based on Foata normal form. 10/1136 useless extension candidates. Maximal degree in co-relation 10244. Up to 929 conditions per place. [2024-10-14 19:50:46,852 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 289 selfloop transitions, 85 changer transitions 0/375 dead transitions. [2024-10-14 19:50:46,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 375 transitions, 6885 flow [2024-10-14 19:50:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 19:50:46,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 19:50:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 138 transitions. [2024-10-14 19:50:46,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-10-14 19:50:46,854 INFO L175 Difference]: Start difference. First operand has 238 places, 327 transitions, 5184 flow. Second operand 16 states and 138 transitions. [2024-10-14 19:50:46,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 375 transitions, 6885 flow [2024-10-14 19:50:47,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 375 transitions, 6774 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-10-14 19:50:47,021 INFO L231 Difference]: Finished difference. Result has 251 places, 352 transitions, 6047 flow [2024-10-14 19:50:47,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5073, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6047, PETRI_PLACES=251, PETRI_TRANSITIONS=352} [2024-10-14 19:50:47,022 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 229 predicate places. [2024-10-14 19:50:47,022 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 352 transitions, 6047 flow [2024-10-14 19:50:47,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:47,022 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:47,022 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:47,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:47,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-14 19:50:47,223 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:47,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash -18594597, now seen corresponding path program 22 times [2024-10-14 19:50:47,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:47,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4151357] [2024-10-14 19:50:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:47,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:47,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:47,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4151357] [2024-10-14 19:50:47,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4151357] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:47,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856160795] [2024-10-14 19:50:47,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:50:47,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:47,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:47,296 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:47,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-14 19:50:47,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:50:47,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:47,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:47,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:47,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:47,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856160795] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:47,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:47,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:50:47,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560102153] [2024-10-14 19:50:47,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:47,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:47,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:47,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:47,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:47,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:47,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 352 transitions, 6047 flow. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:47,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:47,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:47,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:47,910 INFO L124 PetriNetUnfolderBase]: 721/1177 cut-off events. [2024-10-14 19:50:47,910 INFO L125 PetriNetUnfolderBase]: For 54359/54359 co-relation queries the response was YES. [2024-10-14 19:50:47,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11614 conditions, 1177 events. 721/1177 cut-off events. For 54359/54359 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5441 event pairs, 86 based on Foata normal form. 10/1187 useless extension candidates. Maximal degree in co-relation 11442. Up to 705 conditions per place. [2024-10-14 19:50:47,924 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 228 selfloop transitions, 168 changer transitions 0/397 dead transitions. [2024-10-14 19:50:47,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 397 transitions, 7846 flow [2024-10-14 19:50:47,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 19:50:47,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 19:50:47,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 149 transitions. [2024-10-14 19:50:47,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43823529411764706 [2024-10-14 19:50:47,926 INFO L175 Difference]: Start difference. First operand has 251 places, 352 transitions, 6047 flow. Second operand 17 states and 149 transitions. [2024-10-14 19:50:47,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 397 transitions, 7846 flow [2024-10-14 19:50:48,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 397 transitions, 7281 flow, removed 257 selfloop flow, removed 10 redundant places. [2024-10-14 19:50:48,129 INFO L231 Difference]: Finished difference. Result has 260 places, 370 transitions, 6651 flow [2024-10-14 19:50:48,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5502, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6651, PETRI_PLACES=260, PETRI_TRANSITIONS=370} [2024-10-14 19:50:48,130 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 238 predicate places. [2024-10-14 19:50:48,130 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 370 transitions, 6651 flow [2024-10-14 19:50:48,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:48,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:48,131 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:48,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:48,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-14 19:50:48,331 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:48,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:48,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1624324261, now seen corresponding path program 23 times [2024-10-14 19:50:48,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:48,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756834386] [2024-10-14 19:50:48,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:48,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:48,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:48,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756834386] [2024-10-14 19:50:48,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756834386] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:48,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497094134] [2024-10-14 19:50:48,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:50:48,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:48,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:48,405 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:48,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-14 19:50:48,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:48,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:48,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:48,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:48,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:48,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497094134] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:48,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:48,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-14 19:50:48,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641867326] [2024-10-14 19:50:48,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:48,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:50:48,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:48,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:50:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:50:48,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:48,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 370 transitions, 6651 flow. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2024-10-14 19:50:48,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:48,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:48,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:48,961 INFO L124 PetriNetUnfolderBase]: 752/1226 cut-off events. [2024-10-14 19:50:48,961 INFO L125 PetriNetUnfolderBase]: For 46695/46695 co-relation queries the response was YES. [2024-10-14 19:50:48,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12230 conditions, 1226 events. 752/1226 cut-off events. For 46695/46695 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5722 event pairs, 164 based on Foata normal form. 6/1232 useless extension candidates. Maximal degree in co-relation 12059. Up to 1041 conditions per place. [2024-10-14 19:50:48,973 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 320 selfloop transitions, 79 changer transitions 6/406 dead transitions. [2024-10-14 19:50:48,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 406 transitions, 8104 flow [2024-10-14 19:50:48,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 19:50:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 19:50:48,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 122 transitions. [2024-10-14 19:50:48,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-10-14 19:50:48,974 INFO L175 Difference]: Start difference. First operand has 260 places, 370 transitions, 6651 flow. Second operand 15 states and 122 transitions. [2024-10-14 19:50:48,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 406 transitions, 8104 flow [2024-10-14 19:50:49,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 406 transitions, 7507 flow, removed 252 selfloop flow, removed 13 redundant places. [2024-10-14 19:50:49,127 INFO L231 Difference]: Finished difference. Result has 267 places, 384 transitions, 6627 flow [2024-10-14 19:50:49,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6058, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6627, PETRI_PLACES=267, PETRI_TRANSITIONS=384} [2024-10-14 19:50:49,127 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 245 predicate places. [2024-10-14 19:50:49,127 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 384 transitions, 6627 flow [2024-10-14 19:50:49,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2024-10-14 19:50:49,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:49,128 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:49,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:49,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:49,328 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:49,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:49,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1469932770, now seen corresponding path program 24 times [2024-10-14 19:50:49,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:49,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024416401] [2024-10-14 19:50:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:49,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:49,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:49,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024416401] [2024-10-14 19:50:49,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024416401] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:49,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239831674] [2024-10-14 19:50:49,396 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:50:49,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:49,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:49,398 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:49,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-14 19:50:49,463 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-14 19:50:49,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:49,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:49,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:49,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:49,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239831674] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:49,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:49,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-14 19:50:49,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537296884] [2024-10-14 19:50:49,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:49,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:49,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:49,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:49,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:49,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:49,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 384 transitions, 6627 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:49,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:49,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:49,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:49,920 INFO L124 PetriNetUnfolderBase]: 794/1283 cut-off events. [2024-10-14 19:50:49,920 INFO L125 PetriNetUnfolderBase]: For 52363/52363 co-relation queries the response was YES. [2024-10-14 19:50:49,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12855 conditions, 1283 events. 794/1283 cut-off events. For 52363/52363 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5966 event pairs, 38 based on Foata normal form. 9/1292 useless extension candidates. Maximal degree in co-relation 12740. Up to 890 conditions per place. [2024-10-14 19:50:49,932 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 330 selfloop transitions, 102 changer transitions 1/434 dead transitions. [2024-10-14 19:50:49,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 434 transitions, 8667 flow [2024-10-14 19:50:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 19:50:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 19:50:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 124 transitions. [2024-10-14 19:50:49,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-10-14 19:50:49,933 INFO L175 Difference]: Start difference. First operand has 267 places, 384 transitions, 6627 flow. Second operand 14 states and 124 transitions. [2024-10-14 19:50:49,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 434 transitions, 8667 flow [2024-10-14 19:50:50,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 434 transitions, 8482 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-10-14 19:50:50,086 INFO L231 Difference]: Finished difference. Result has 276 places, 406 transitions, 7504 flow [2024-10-14 19:50:50,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6466, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7504, PETRI_PLACES=276, PETRI_TRANSITIONS=406} [2024-10-14 19:50:50,087 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 254 predicate places. [2024-10-14 19:50:50,087 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 406 transitions, 7504 flow [2024-10-14 19:50:50,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:50,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:50,087 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:50,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:50,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-14 19:50:50,288 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:50,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:50,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1320777182, now seen corresponding path program 25 times [2024-10-14 19:50:50,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:50,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680100507] [2024-10-14 19:50:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:50,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:50,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:50,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:50,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680100507] [2024-10-14 19:50:50,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680100507] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:50,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108486400] [2024-10-14 19:50:50,355 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:50:50,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:50,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:50,357 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:50,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-14 19:50:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:50,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:50,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:50,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:50,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108486400] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:50,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:50,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-14 19:50:50,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017154515] [2024-10-14 19:50:50,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:50,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:50:50,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:50,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:50:50,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:50:50,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:50,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 406 transitions, 7504 flow. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2024-10-14 19:50:50,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:50,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:50,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:50,898 INFO L124 PetriNetUnfolderBase]: 865/1390 cut-off events. [2024-10-14 19:50:50,899 INFO L125 PetriNetUnfolderBase]: For 69312/69312 co-relation queries the response was YES. [2024-10-14 19:50:50,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14793 conditions, 1390 events. 865/1390 cut-off events. For 69312/69312 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6569 event pairs, 38 based on Foata normal form. 15/1405 useless extension candidates. Maximal degree in co-relation 14615. Up to 828 conditions per place. [2024-10-14 19:50:50,912 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 321 selfloop transitions, 156 changer transitions 5/483 dead transitions. [2024-10-14 19:50:50,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 483 transitions, 10287 flow [2024-10-14 19:50:50,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 19:50:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 19:50:50,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2024-10-14 19:50:50,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4323529411764706 [2024-10-14 19:50:50,913 INFO L175 Difference]: Start difference. First operand has 276 places, 406 transitions, 7504 flow. Second operand 17 states and 147 transitions. [2024-10-14 19:50:50,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 483 transitions, 10287 flow [2024-10-14 19:50:51,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 483 transitions, 9465 flow, removed 313 selfloop flow, removed 7 redundant places. [2024-10-14 19:50:51,117 INFO L231 Difference]: Finished difference. Result has 289 places, 444 transitions, 8500 flow [2024-10-14 19:50:51,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6818, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8500, PETRI_PLACES=289, PETRI_TRANSITIONS=444} [2024-10-14 19:50:51,118 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 267 predicate places. [2024-10-14 19:50:51,118 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 444 transitions, 8500 flow [2024-10-14 19:50:51,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 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) [2024-10-14 19:50:51,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:51,118 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:51,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:51,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-14 19:50:51,319 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:51,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:51,319 INFO L85 PathProgramCache]: Analyzing trace with hash 819255929, now seen corresponding path program 26 times [2024-10-14 19:50:51,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:51,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131478946] [2024-10-14 19:50:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:51,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:51,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:51,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131478946] [2024-10-14 19:50:51,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131478946] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:51,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631540179] [2024-10-14 19:50:51,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:50:51,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:51,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:51,385 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:51,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-14 19:50:51,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:51,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:51,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:51,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:51,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:51,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631540179] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:51,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:51,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-14 19:50:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553975793] [2024-10-14 19:50:51,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:51,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:50:51,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:51,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:50:51,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:50:51,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:51,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 444 transitions, 8500 flow. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:51,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:51,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:51,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:51,863 INFO L124 PetriNetUnfolderBase]: 863/1391 cut-off events. [2024-10-14 19:50:51,863 INFO L125 PetriNetUnfolderBase]: For 64705/64705 co-relation queries the response was YES. [2024-10-14 19:50:51,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14562 conditions, 1391 events. 863/1391 cut-off events. For 64705/64705 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6583 event pairs, 129 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 14380. Up to 982 conditions per place. [2024-10-14 19:50:51,881 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 355 selfloop transitions, 100 changer transitions 5/461 dead transitions. [2024-10-14 19:50:51,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 461 transitions, 9734 flow [2024-10-14 19:50:51,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:50:51,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:50:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-10-14 19:50:51,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-10-14 19:50:51,882 INFO L175 Difference]: Start difference. First operand has 289 places, 444 transitions, 8500 flow. Second operand 7 states and 66 transitions. [2024-10-14 19:50:51,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 461 transitions, 9734 flow [2024-10-14 19:50:52,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 461 transitions, 8934 flow, removed 377 selfloop flow, removed 5 redundant places. [2024-10-14 19:50:52,094 INFO L231 Difference]: Finished difference. Result has 289 places, 443 transitions, 7893 flow [2024-10-14 19:50:52,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7700, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7893, PETRI_PLACES=289, PETRI_TRANSITIONS=443} [2024-10-14 19:50:52,095 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 267 predicate places. [2024-10-14 19:50:52,095 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 443 transitions, 7893 flow [2024-10-14 19:50:52,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:52,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:52,095 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:52,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:52,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-14 19:50:52,296 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:52,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:52,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1904791710, now seen corresponding path program 27 times [2024-10-14 19:50:52,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:52,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823951631] [2024-10-14 19:50:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:52,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:52,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823951631] [2024-10-14 19:50:52,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823951631] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758237886] [2024-10-14 19:50:52,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:50:52,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:52,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:52,363 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:52,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-14 19:50:52,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:50:52,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:52,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:52,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:52,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:50:52,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758237886] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:52,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:52,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-14 19:50:52,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506869875] [2024-10-14 19:50:52,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:52,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:52,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:52,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:52,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:52,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:52,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 443 transitions, 7893 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:52,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:52,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:52,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:52,904 INFO L124 PetriNetUnfolderBase]: 860/1388 cut-off events. [2024-10-14 19:50:52,904 INFO L125 PetriNetUnfolderBase]: For 54090/54090 co-relation queries the response was YES. [2024-10-14 19:50:52,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13834 conditions, 1388 events. 860/1388 cut-off events. For 54090/54090 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6614 event pairs, 36 based on Foata normal form. 18/1406 useless extension candidates. Maximal degree in co-relation 13656. Up to 966 conditions per place. [2024-10-14 19:50:52,917 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 348 selfloop transitions, 123 changer transitions 0/472 dead transitions. [2024-10-14 19:50:52,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 472 transitions, 9238 flow [2024-10-14 19:50:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 19:50:52,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 19:50:52,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 146 transitions. [2024-10-14 19:50:52,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4294117647058823 [2024-10-14 19:50:52,918 INFO L175 Difference]: Start difference. First operand has 289 places, 443 transitions, 7893 flow. Second operand 17 states and 146 transitions. [2024-10-14 19:50:52,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 472 transitions, 9238 flow [2024-10-14 19:50:53,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 472 transitions, 8983 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-14 19:50:53,105 INFO L231 Difference]: Finished difference. Result has 298 places, 446 transitions, 7957 flow [2024-10-14 19:50:53,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7482, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7957, PETRI_PLACES=298, PETRI_TRANSITIONS=446} [2024-10-14 19:50:53,106 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 276 predicate places. [2024-10-14 19:50:53,106 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 446 transitions, 7957 flow [2024-10-14 19:50:53,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:53,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:53,106 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:53,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-10-14 19:50:53,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:53,307 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:53,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:53,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1975965699, now seen corresponding path program 28 times [2024-10-14 19:50:53,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:53,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865714760] [2024-10-14 19:50:53,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:53,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:53,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:53,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:53,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865714760] [2024-10-14 19:50:53,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865714760] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:53,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258964265] [2024-10-14 19:50:53,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:50:53,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:53,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:53,372 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:53,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-14 19:50:53,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:50:53,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:53,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:53,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:53,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:53,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:53,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258964265] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:53,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:53,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-14 19:50:53,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745585430] [2024-10-14 19:50:53,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:53,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:53,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:53,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:53,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:53,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:53,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 446 transitions, 7957 flow. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:53,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:53,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:53,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:53,884 INFO L124 PetriNetUnfolderBase]: 856/1384 cut-off events. [2024-10-14 19:50:53,884 INFO L125 PetriNetUnfolderBase]: For 56181/56181 co-relation queries the response was YES. [2024-10-14 19:50:53,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13836 conditions, 1384 events. 856/1384 cut-off events. For 56181/56181 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6624 event pairs, 134 based on Foata normal form. 4/1388 useless extension candidates. Maximal degree in co-relation 13654. Up to 994 conditions per place. [2024-10-14 19:50:53,896 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 343 selfloop transitions, 115 changer transitions 3/462 dead transitions. [2024-10-14 19:50:53,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 462 transitions, 9226 flow [2024-10-14 19:50:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:50:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:50:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 93 transitions. [2024-10-14 19:50:53,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-10-14 19:50:53,897 INFO L175 Difference]: Start difference. First operand has 298 places, 446 transitions, 7957 flow. Second operand 11 states and 93 transitions. [2024-10-14 19:50:53,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 462 transitions, 9226 flow [2024-10-14 19:50:54,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 462 transitions, 8884 flow, removed 56 selfloop flow, removed 12 redundant places. [2024-10-14 19:50:54,071 INFO L231 Difference]: Finished difference. Result has 297 places, 444 transitions, 7851 flow [2024-10-14 19:50:54,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7605, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7851, PETRI_PLACES=297, PETRI_TRANSITIONS=444} [2024-10-14 19:50:54,072 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 275 predicate places. [2024-10-14 19:50:54,072 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 444 transitions, 7851 flow [2024-10-14 19:50:54,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:54,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:54,072 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:54,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:54,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-10-14 19:50:54,273 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:54,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:54,273 INFO L85 PathProgramCache]: Analyzing trace with hash -261851048, now seen corresponding path program 29 times [2024-10-14 19:50:54,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:54,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353189367] [2024-10-14 19:50:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:54,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:54,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:54,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353189367] [2024-10-14 19:50:54,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353189367] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:54,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179400260] [2024-10-14 19:50:54,347 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:50:54,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:54,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:54,349 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:54,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-14 19:50:54,408 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-14 19:50:54,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:54,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:54,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:54,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:54,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179400260] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:54,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:54,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-14 19:50:54,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454911479] [2024-10-14 19:50:54,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:54,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:54,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:54,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:54,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:54,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:54,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 444 transitions, 7851 flow. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:54,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:54,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:54,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:54,882 INFO L124 PetriNetUnfolderBase]: 908/1456 cut-off events. [2024-10-14 19:50:54,882 INFO L125 PetriNetUnfolderBase]: For 66298/66298 co-relation queries the response was YES. [2024-10-14 19:50:54,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15062 conditions, 1456 events. 908/1456 cut-off events. For 66298/66298 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6917 event pairs, 37 based on Foata normal form. 12/1468 useless extension candidates. Maximal degree in co-relation 14884. Up to 907 conditions per place. [2024-10-14 19:50:54,936 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 311 selfloop transitions, 190 changer transitions 0/502 dead transitions. [2024-10-14 19:50:54,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 502 transitions, 10254 flow [2024-10-14 19:50:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 19:50:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 19:50:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2024-10-14 19:50:54,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4323529411764706 [2024-10-14 19:50:54,937 INFO L175 Difference]: Start difference. First operand has 297 places, 444 transitions, 7851 flow. Second operand 17 states and 147 transitions. [2024-10-14 19:50:54,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 502 transitions, 10254 flow [2024-10-14 19:50:55,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 502 transitions, 9992 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-10-14 19:50:55,124 INFO L231 Difference]: Finished difference. Result has 307 places, 479 transitions, 9354 flow [2024-10-14 19:50:55,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7565, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9354, PETRI_PLACES=307, PETRI_TRANSITIONS=479} [2024-10-14 19:50:55,124 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 285 predicate places. [2024-10-14 19:50:55,125 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 479 transitions, 9354 flow [2024-10-14 19:50:55,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:55,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:55,125 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:55,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:55,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:55,325 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:55,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:55,326 INFO L85 PathProgramCache]: Analyzing trace with hash -438573290, now seen corresponding path program 30 times [2024-10-14 19:50:55,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:55,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688915029] [2024-10-14 19:50:55,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:55,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:55,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:55,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688915029] [2024-10-14 19:50:55,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688915029] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:55,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865422961] [2024-10-14 19:50:55,391 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:50:55,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:55,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:55,393 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:55,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-14 19:50:55,448 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-14 19:50:55,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:55,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:55,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:55,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:55,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865422961] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:55,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:55,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-14 19:50:55,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543492877] [2024-10-14 19:50:55,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:55,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:50:55,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:55,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:50:55,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:50:55,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:55,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 479 transitions, 9354 flow. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:55,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:55,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:55,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:55,893 INFO L124 PetriNetUnfolderBase]: 934/1501 cut-off events. [2024-10-14 19:50:55,894 INFO L125 PetriNetUnfolderBase]: For 68541/68541 co-relation queries the response was YES. [2024-10-14 19:50:55,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16000 conditions, 1501 events. 934/1501 cut-off events. For 68541/68541 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7190 event pairs, 15 based on Foata normal form. 8/1509 useless extension candidates. Maximal degree in co-relation 15825. Up to 769 conditions per place. [2024-10-14 19:50:55,955 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 328 selfloop transitions, 188 changer transitions 0/517 dead transitions. [2024-10-14 19:50:55,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 517 transitions, 11082 flow [2024-10-14 19:50:55,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:50:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:50:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-10-14 19:50:55,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.465 [2024-10-14 19:50:55,956 INFO L175 Difference]: Start difference. First operand has 307 places, 479 transitions, 9354 flow. Second operand 10 states and 93 transitions. [2024-10-14 19:50:55,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 517 transitions, 11082 flow [2024-10-14 19:50:56,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 517 transitions, 10120 flow, removed 439 selfloop flow, removed 10 redundant places. [2024-10-14 19:50:56,260 INFO L231 Difference]: Finished difference. Result has 310 places, 492 transitions, 9172 flow [2024-10-14 19:50:56,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8448, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9172, PETRI_PLACES=310, PETRI_TRANSITIONS=492} [2024-10-14 19:50:56,261 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 288 predicate places. [2024-10-14 19:50:56,261 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 492 transitions, 9172 flow [2024-10-14 19:50:56,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:56,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:56,261 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:56,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-10-14 19:50:56,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-10-14 19:50:56,462 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:56,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:56,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1369561908, now seen corresponding path program 31 times [2024-10-14 19:50:56,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:56,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422647802] [2024-10-14 19:50:56,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:56,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:56,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:56,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422647802] [2024-10-14 19:50:56,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422647802] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:56,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92293048] [2024-10-14 19:50:56,536 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:50:56,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:56,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:56,538 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:56,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-14 19:50:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:56,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:56,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:56,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:56,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:56,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92293048] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:56,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:56,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:50:56,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65916547] [2024-10-14 19:50:56,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:56,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:56,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:56,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:56,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:56,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:56,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 492 transitions, 9172 flow. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:56,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:56,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:56,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:57,140 INFO L124 PetriNetUnfolderBase]: 951/1530 cut-off events. [2024-10-14 19:50:57,140 INFO L125 PetriNetUnfolderBase]: For 48484/48484 co-relation queries the response was YES. [2024-10-14 19:50:57,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15311 conditions, 1530 events. 951/1530 cut-off events. For 48484/48484 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7415 event pairs, 37 based on Foata normal form. 12/1542 useless extension candidates. Maximal degree in co-relation 15072. Up to 975 conditions per place. [2024-10-14 19:50:57,158 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 356 selfloop transitions, 169 changer transitions 0/526 dead transitions. [2024-10-14 19:50:57,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 526 transitions, 10679 flow [2024-10-14 19:50:57,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 19:50:57,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 19:50:57,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 138 transitions. [2024-10-14 19:50:57,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-10-14 19:50:57,159 INFO L175 Difference]: Start difference. First operand has 310 places, 492 transitions, 9172 flow. Second operand 16 states and 138 transitions. [2024-10-14 19:50:57,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 526 transitions, 10679 flow [2024-10-14 19:50:57,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 526 transitions, 10305 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-10-14 19:50:57,386 INFO L231 Difference]: Finished difference. Result has 319 places, 502 transitions, 9456 flow [2024-10-14 19:50:57,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8705, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9456, PETRI_PLACES=319, PETRI_TRANSITIONS=502} [2024-10-14 19:50:57,386 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 297 predicate places. [2024-10-14 19:50:57,387 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 502 transitions, 9456 flow [2024-10-14 19:50:57,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:57,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:57,387 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:57,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-10-14 19:50:57,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:57,588 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:57,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 511719420, now seen corresponding path program 32 times [2024-10-14 19:50:57,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:57,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139382358] [2024-10-14 19:50:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:57,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:57,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:57,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139382358] [2024-10-14 19:50:57,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139382358] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:57,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884802732] [2024-10-14 19:50:57,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:50:57,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:57,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:57,658 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:57,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-10-14 19:50:57,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:50:57,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:57,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:57,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:57,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884802732] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:57,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:57,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-14 19:50:57,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110146336] [2024-10-14 19:50:57,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:57,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:50:57,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:57,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:50:57,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:50:57,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:57,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 502 transitions, 9456 flow. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:57,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:57,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:57,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:58,210 INFO L124 PetriNetUnfolderBase]: 996/1609 cut-off events. [2024-10-14 19:50:58,210 INFO L125 PetriNetUnfolderBase]: For 50028/50028 co-relation queries the response was YES. [2024-10-14 19:50:58,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16241 conditions, 1609 events. 996/1609 cut-off events. For 50028/50028 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7927 event pairs, 50 based on Foata normal form. 6/1615 useless extension candidates. Maximal degree in co-relation 15991. Up to 1087 conditions per place. [2024-10-14 19:50:58,227 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 402 selfloop transitions, 145 changer transitions 0/548 dead transitions. [2024-10-14 19:50:58,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 548 transitions, 11340 flow [2024-10-14 19:50:58,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 19:50:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 19:50:58,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 116 transitions. [2024-10-14 19:50:58,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-10-14 19:50:58,228 INFO L175 Difference]: Start difference. First operand has 319 places, 502 transitions, 9456 flow. Second operand 14 states and 116 transitions. [2024-10-14 19:50:58,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 548 transitions, 11340 flow [2024-10-14 19:50:58,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 548 transitions, 11098 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-10-14 19:50:58,445 INFO L231 Difference]: Finished difference. Result has 330 places, 528 transitions, 10153 flow [2024-10-14 19:50:58,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9238, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10153, PETRI_PLACES=330, PETRI_TRANSITIONS=528} [2024-10-14 19:50:58,446 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 308 predicate places. [2024-10-14 19:50:58,446 INFO L471 AbstractCegarLoop]: Abstraction has has 330 places, 528 transitions, 10153 flow [2024-10-14 19:50:58,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:58,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:58,446 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:58,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-10-14 19:50:58,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-10-14 19:50:58,647 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:58,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2145914194, now seen corresponding path program 33 times [2024-10-14 19:50:58,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:58,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499676342] [2024-10-14 19:50:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:58,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:58,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:58,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499676342] [2024-10-14 19:50:58,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499676342] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:58,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714169753] [2024-10-14 19:50:58,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:50:58,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:58,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:58,716 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:58,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-10-14 19:50:58,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 19:50:58,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:58,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:58,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:58,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:58,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714169753] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:58,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:58,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:50:58,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925583408] [2024-10-14 19:50:58,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:58,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:58,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:58,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:58,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:58,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 528 transitions, 10153 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:58,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:58,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:58,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:50:59,267 INFO L124 PetriNetUnfolderBase]: 993/1606 cut-off events. [2024-10-14 19:50:59,267 INFO L125 PetriNetUnfolderBase]: For 51898/51898 co-relation queries the response was YES. [2024-10-14 19:50:59,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16389 conditions, 1606 events. 993/1606 cut-off events. For 51898/51898 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8021 event pairs, 64 based on Foata normal form. 6/1612 useless extension candidates. Maximal degree in co-relation 16132. Up to 960 conditions per place. [2024-10-14 19:50:59,286 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 383 selfloop transitions, 163 changer transitions 3/550 dead transitions. [2024-10-14 19:50:59,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 550 transitions, 11525 flow [2024-10-14 19:50:59,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 19:50:59,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 19:50:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-10-14 19:50:59,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4346153846153846 [2024-10-14 19:50:59,287 INFO L175 Difference]: Start difference. First operand has 330 places, 528 transitions, 10153 flow. Second operand 13 states and 113 transitions. [2024-10-14 19:50:59,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 550 transitions, 11525 flow [2024-10-14 19:50:59,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 550 transitions, 11313 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-10-14 19:50:59,532 INFO L231 Difference]: Finished difference. Result has 337 places, 526 transitions, 10245 flow [2024-10-14 19:50:59,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9921, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10245, PETRI_PLACES=337, PETRI_TRANSITIONS=526} [2024-10-14 19:50:59,533 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 315 predicate places. [2024-10-14 19:50:59,533 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 526 transitions, 10245 flow [2024-10-14 19:50:59,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:59,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:50:59,533 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:50:59,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-10-14 19:50:59,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-10-14 19:50:59,734 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:50:59,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:50:59,734 INFO L85 PathProgramCache]: Analyzing trace with hash -936318785, now seen corresponding path program 34 times [2024-10-14 19:50:59,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:50:59,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262902635] [2024-10-14 19:50:59,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:50:59,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:50:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:50:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:59,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:50:59,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262902635] [2024-10-14 19:50:59,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262902635] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:50:59,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595835673] [2024-10-14 19:50:59,793 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:50:59,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:50:59,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:50:59,795 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:50:59,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-10-14 19:50:59,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:50:59,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:50:59,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:50:59,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:50:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:59,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:50:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:50:59,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595835673] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:50:59,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:50:59,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:50:59,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489656593] [2024-10-14 19:50:59,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:50:59,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:50:59,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:50:59,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:50:59,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:50:59,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:50:59,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 526 transitions, 10245 flow. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:50:59,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:50:59,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:50:59,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:00,382 INFO L124 PetriNetUnfolderBase]: 992/1598 cut-off events. [2024-10-14 19:51:00,382 INFO L125 PetriNetUnfolderBase]: For 54242/54242 co-relation queries the response was YES. [2024-10-14 19:51:00,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16526 conditions, 1598 events. 992/1598 cut-off events. For 54242/54242 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7835 event pairs, 152 based on Foata normal form. 4/1602 useless extension candidates. Maximal degree in co-relation 16254. Up to 1075 conditions per place. [2024-10-14 19:51:00,399 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 351 selfloop transitions, 190 changer transitions 2/544 dead transitions. [2024-10-14 19:51:00,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 544 transitions, 11624 flow [2024-10-14 19:51:00,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 19:51:00,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 19:51:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2024-10-14 19:51:00,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-10-14 19:51:00,400 INFO L175 Difference]: Start difference. First operand has 337 places, 526 transitions, 10245 flow. Second operand 12 states and 104 transitions. [2024-10-14 19:51:00,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 544 transitions, 11624 flow [2024-10-14 19:51:00,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 544 transitions, 11266 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-10-14 19:51:00,648 INFO L231 Difference]: Finished difference. Result has 333 places, 525 transitions, 10321 flow [2024-10-14 19:51:00,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9867, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10321, PETRI_PLACES=333, PETRI_TRANSITIONS=525} [2024-10-14 19:51:00,649 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 311 predicate places. [2024-10-14 19:51:00,649 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 525 transitions, 10321 flow [2024-10-14 19:51:00,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:00,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:00,650 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:00,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-10-14 19:51:00,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-10-14 19:51:00,851 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:00,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:00,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1893493436, now seen corresponding path program 35 times [2024-10-14 19:51:00,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:00,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380518944] [2024-10-14 19:51:00,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:00,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:00,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:00,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380518944] [2024-10-14 19:51:00,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380518944] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:00,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122995802] [2024-10-14 19:51:00,924 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:51:00,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:00,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:00,925 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:00,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-10-14 19:51:00,977 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:51:00,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:00,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:51:00,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:01,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:01,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122995802] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:01,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:01,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-14 19:51:01,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842075765] [2024-10-14 19:51:01,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:01,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:51:01,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:01,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:51:01,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:51:01,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:01,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 525 transitions, 10321 flow. Second operand has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:01,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:01,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:01,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:01,616 INFO L124 PetriNetUnfolderBase]: 1034/1664 cut-off events. [2024-10-14 19:51:01,616 INFO L125 PetriNetUnfolderBase]: For 56504/56504 co-relation queries the response was YES. [2024-10-14 19:51:01,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17355 conditions, 1664 events. 1034/1664 cut-off events. For 56504/56504 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8298 event pairs, 45 based on Foata normal form. 6/1670 useless extension candidates. Maximal degree in co-relation 17042. Up to 1025 conditions per place. [2024-10-14 19:51:01,634 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 383 selfloop transitions, 197 changer transitions 0/581 dead transitions. [2024-10-14 19:51:01,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 581 transitions, 12346 flow [2024-10-14 19:51:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 19:51:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-14 19:51:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 183 transitions. [2024-10-14 19:51:01,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3978260869565217 [2024-10-14 19:51:01,636 INFO L175 Difference]: Start difference. First operand has 333 places, 525 transitions, 10321 flow. Second operand 23 states and 183 transitions. [2024-10-14 19:51:01,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 581 transitions, 12346 flow [2024-10-14 19:51:01,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 581 transitions, 11982 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-10-14 19:51:01,890 INFO L231 Difference]: Finished difference. Result has 345 places, 553 transitions, 11054 flow [2024-10-14 19:51:01,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9923, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=11054, PETRI_PLACES=345, PETRI_TRANSITIONS=553} [2024-10-14 19:51:01,891 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 323 predicate places. [2024-10-14 19:51:01,891 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 553 transitions, 11054 flow [2024-10-14 19:51:01,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 15 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:01,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:01,892 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:01,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-10-14 19:51:02,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-10-14 19:51:02,093 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:02,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:02,093 INFO L85 PathProgramCache]: Analyzing trace with hash -618666849, now seen corresponding path program 36 times [2024-10-14 19:51:02,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:02,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750623295] [2024-10-14 19:51:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:02,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:02,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:02,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750623295] [2024-10-14 19:51:02,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750623295] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:02,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626715960] [2024-10-14 19:51:02,299 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:51:02,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:02,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:02,300 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:02,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-10-14 19:51:02,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-14 19:51:02,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:02,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:02,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:02,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:02,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626715960] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:02,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:02,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-14 19:51:02,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397969816] [2024-10-14 19:51:02,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:02,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 19:51:02,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:02,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 19:51:02,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-14 19:51:02,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:02,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 553 transitions, 11054 flow. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:02,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:02,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:02,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:03,543 INFO L124 PetriNetUnfolderBase]: 1197/1972 cut-off events. [2024-10-14 19:51:03,543 INFO L125 PetriNetUnfolderBase]: For 69594/69594 co-relation queries the response was YES. [2024-10-14 19:51:03,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20736 conditions, 1972 events. 1197/1972 cut-off events. For 69594/69594 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10442 event pairs, 24 based on Foata normal form. 2/1974 useless extension candidates. Maximal degree in co-relation 20367. Up to 1548 conditions per place. [2024-10-14 19:51:03,570 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 553 selfloop transitions, 107 changer transitions 12/673 dead transitions. [2024-10-14 19:51:03,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 673 transitions, 14503 flow [2024-10-14 19:51:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:51:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:51:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-10-14 19:51:03,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2024-10-14 19:51:03,571 INFO L175 Difference]: Start difference. First operand has 345 places, 553 transitions, 11054 flow. Second operand 11 states and 117 transitions. [2024-10-14 19:51:03,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 673 transitions, 14503 flow [2024-10-14 19:51:03,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 673 transitions, 13993 flow, removed 69 selfloop flow, removed 12 redundant places. [2024-10-14 19:51:03,902 INFO L231 Difference]: Finished difference. Result has 352 places, 611 transitions, 12240 flow [2024-10-14 19:51:03,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=10586, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12240, PETRI_PLACES=352, PETRI_TRANSITIONS=611} [2024-10-14 19:51:03,903 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 330 predicate places. [2024-10-14 19:51:03,903 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 611 transitions, 12240 flow [2024-10-14 19:51:03,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:03,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:03,904 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:03,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-10-14 19:51:04,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-10-14 19:51:04,104 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:04,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash 416677767, now seen corresponding path program 37 times [2024-10-14 19:51:04,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:04,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126837826] [2024-10-14 19:51:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:04,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:04,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:04,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126837826] [2024-10-14 19:51:04,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126837826] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:04,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646826089] [2024-10-14 19:51:04,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:51:04,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:04,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:04,327 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:04,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-10-14 19:51:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:04,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:04,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:04,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:04,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646826089] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:04,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:04,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-14 19:51:04,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581703255] [2024-10-14 19:51:04,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:04,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:51:04,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:04,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:51:04,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:51:04,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:04,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 611 transitions, 12240 flow. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:04,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:04,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:04,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:05,390 INFO L124 PetriNetUnfolderBase]: 1205/1994 cut-off events. [2024-10-14 19:51:05,390 INFO L125 PetriNetUnfolderBase]: For 74915/74915 co-relation queries the response was YES. [2024-10-14 19:51:05,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21120 conditions, 1994 events. 1205/1994 cut-off events. For 74915/74915 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 10677 event pairs, 23 based on Foata normal form. 2/1996 useless extension candidates. Maximal degree in co-relation 20963. Up to 1678 conditions per place. [2024-10-14 19:51:05,416 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 551 selfloop transitions, 91 changer transitions 17/660 dead transitions. [2024-10-14 19:51:05,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 660 transitions, 14214 flow [2024-10-14 19:51:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 19:51:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 19:51:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-10-14 19:51:05,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-10-14 19:51:05,417 INFO L175 Difference]: Start difference. First operand has 352 places, 611 transitions, 12240 flow. Second operand 12 states and 115 transitions. [2024-10-14 19:51:05,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 660 transitions, 14214 flow [2024-10-14 19:51:05,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 660 transitions, 13759 flow, removed 226 selfloop flow, removed 3 redundant places. [2024-10-14 19:51:05,786 INFO L231 Difference]: Finished difference. Result has 363 places, 617 transitions, 12279 flow [2024-10-14 19:51:05,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=11869, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12279, PETRI_PLACES=363, PETRI_TRANSITIONS=617} [2024-10-14 19:51:05,787 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 341 predicate places. [2024-10-14 19:51:05,787 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 617 transitions, 12279 flow [2024-10-14 19:51:05,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:05,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:05,787 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:05,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-10-14 19:51:05,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:05,988 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:05,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:05,988 INFO L85 PathProgramCache]: Analyzing trace with hash 34939403, now seen corresponding path program 38 times [2024-10-14 19:51:05,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:05,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255948656] [2024-10-14 19:51:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:05,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:06,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:06,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255948656] [2024-10-14 19:51:06,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255948656] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:06,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096919080] [2024-10-14 19:51:06,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:51:06,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:06,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:06,178 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:06,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-10-14 19:51:06,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:51:06,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:06,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:06,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:06,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:06,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096919080] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:06,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:06,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-10-14 19:51:06,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712971331] [2024-10-14 19:51:06,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:06,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:51:06,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:06,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:51:06,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:51:06,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:06,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 617 transitions, 12279 flow. Second operand has 17 states, 17 states have (on average 6.294117647058823) internal successors, (107), 17 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:06,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:06,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:06,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:07,167 INFO L124 PetriNetUnfolderBase]: 1187/1963 cut-off events. [2024-10-14 19:51:07,167 INFO L125 PetriNetUnfolderBase]: For 65228/65228 co-relation queries the response was YES. [2024-10-14 19:51:07,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20388 conditions, 1963 events. 1187/1963 cut-off events. For 65228/65228 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10447 event pairs, 22 based on Foata normal form. 1/1964 useless extension candidates. Maximal degree in co-relation 20228. Up to 1554 conditions per place. [2024-10-14 19:51:07,204 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 544 selfloop transitions, 109 changer transitions 4/658 dead transitions. [2024-10-14 19:51:07,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 658 transitions, 14104 flow [2024-10-14 19:51:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:51:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:51:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-10-14 19:51:07,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-10-14 19:51:07,206 INFO L175 Difference]: Start difference. First operand has 363 places, 617 transitions, 12279 flow. Second operand 9 states and 98 transitions. [2024-10-14 19:51:07,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 658 transitions, 14104 flow [2024-10-14 19:51:07,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 658 transitions, 13744 flow, removed 103 selfloop flow, removed 8 redundant places. [2024-10-14 19:51:07,549 INFO L231 Difference]: Finished difference. Result has 363 places, 621 transitions, 12321 flow [2024-10-14 19:51:07,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=11928, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12321, PETRI_PLACES=363, PETRI_TRANSITIONS=621} [2024-10-14 19:51:07,549 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 341 predicate places. [2024-10-14 19:51:07,549 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 621 transitions, 12321 flow [2024-10-14 19:51:07,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.294117647058823) internal successors, (107), 17 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:07,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:07,550 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:07,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-10-14 19:51:07,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-10-14 19:51:07,750 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:07,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:07,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1032936729, now seen corresponding path program 39 times [2024-10-14 19:51:07,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:07,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237040693] [2024-10-14 19:51:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:07,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:07,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:07,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:07,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237040693] [2024-10-14 19:51:07,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237040693] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:07,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13891842] [2024-10-14 19:51:07,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:51:07,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:07,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:07,947 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:07,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-10-14 19:51:08,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:51:08,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:08,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:08,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:08,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:08,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13891842] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:08,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:08,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-14 19:51:08,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685498714] [2024-10-14 19:51:08,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:08,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 19:51:08,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:08,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 19:51:08,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-14 19:51:08,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:08,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 621 transitions, 12321 flow. Second operand has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:08,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:08,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:08,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:08,912 INFO L124 PetriNetUnfolderBase]: 1185/1955 cut-off events. [2024-10-14 19:51:08,912 INFO L125 PetriNetUnfolderBase]: For 66272/66272 co-relation queries the response was YES. [2024-10-14 19:51:08,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20073 conditions, 1955 events. 1185/1955 cut-off events. For 66272/66272 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10375 event pairs, 21 based on Foata normal form. 1/1956 useless extension candidates. Maximal degree in co-relation 19922. Up to 1609 conditions per place. [2024-10-14 19:51:08,940 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 547 selfloop transitions, 109 changer transitions 4/661 dead transitions. [2024-10-14 19:51:08,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 661 transitions, 14091 flow [2024-10-14 19:51:08,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:51:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:51:08,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-10-14 19:51:08,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-10-14 19:51:08,941 INFO L175 Difference]: Start difference. First operand has 363 places, 621 transitions, 12321 flow. Second operand 11 states and 108 transitions. [2024-10-14 19:51:08,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 661 transitions, 14091 flow [2024-10-14 19:51:09,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 661 transitions, 13808 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-10-14 19:51:09,297 INFO L231 Difference]: Finished difference. Result has 369 places, 628 transitions, 12479 flow [2024-10-14 19:51:09,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12042, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12479, PETRI_PLACES=369, PETRI_TRANSITIONS=628} [2024-10-14 19:51:09,298 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 347 predicate places. [2024-10-14 19:51:09,298 INFO L471 AbstractCegarLoop]: Abstraction has has 369 places, 628 transitions, 12479 flow [2024-10-14 19:51:09,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.375) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:09,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:09,298 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:09,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-10-14 19:51:09,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:09,499 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:09,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:09,499 INFO L85 PathProgramCache]: Analyzing trace with hash 571292345, now seen corresponding path program 40 times [2024-10-14 19:51:09,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:09,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263189998] [2024-10-14 19:51:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:09,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:09,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:09,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263189998] [2024-10-14 19:51:09,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263189998] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:09,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092572290] [2024-10-14 19:51:09,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:51:09,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:09,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:09,690 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:09,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-10-14 19:51:09,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:51:09,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:09,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:09,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:09,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:10,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092572290] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:10,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:10,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-14 19:51:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470819157] [2024-10-14 19:51:10,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:10,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 19:51:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:10,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 19:51:10,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-14 19:51:10,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:10,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 628 transitions, 12479 flow. Second operand has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 19 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:10,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:10,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:10,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:10,671 INFO L124 PetriNetUnfolderBase]: 1249/2076 cut-off events. [2024-10-14 19:51:10,672 INFO L125 PetriNetUnfolderBase]: For 74288/74288 co-relation queries the response was YES. [2024-10-14 19:51:10,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21425 conditions, 2076 events. 1249/2076 cut-off events. For 74288/74288 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11271 event pairs, 32 based on Foata normal form. 1/2077 useless extension candidates. Maximal degree in co-relation 21260. Up to 1827 conditions per place. [2024-10-14 19:51:10,714 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 598 selfloop transitions, 85 changer transitions 8/692 dead transitions. [2024-10-14 19:51:10,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 692 transitions, 14934 flow [2024-10-14 19:51:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:51:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:51:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-10-14 19:51:10,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-14 19:51:10,716 INFO L175 Difference]: Start difference. First operand has 369 places, 628 transitions, 12479 flow. Second operand 8 states and 88 transitions. [2024-10-14 19:51:10,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 692 transitions, 14934 flow [2024-10-14 19:51:11,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 692 transitions, 14723 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-10-14 19:51:11,346 INFO L231 Difference]: Finished difference. Result has 371 places, 655 transitions, 13118 flow [2024-10-14 19:51:11,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12274, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13118, PETRI_PLACES=371, PETRI_TRANSITIONS=655} [2024-10-14 19:51:11,347 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 349 predicate places. [2024-10-14 19:51:11,347 INFO L471 AbstractCegarLoop]: Abstraction has has 371 places, 655 transitions, 13118 flow [2024-10-14 19:51:11,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 19 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:11,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:11,348 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:11,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-10-14 19:51:11,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-10-14 19:51:11,548 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:11,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:11,549 INFO L85 PathProgramCache]: Analyzing trace with hash 493537835, now seen corresponding path program 41 times [2024-10-14 19:51:11,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:11,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169274891] [2024-10-14 19:51:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:11,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:11,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:11,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169274891] [2024-10-14 19:51:11,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169274891] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:11,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059990324] [2024-10-14 19:51:11,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:51:11,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:11,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:11,706 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:11,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-10-14 19:51:11,761 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-14 19:51:11,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:11,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:11,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:11,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:12,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059990324] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:12,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:12,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-14 19:51:12,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408737403] [2024-10-14 19:51:12,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:12,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:51:12,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:12,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:51:12,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:51:12,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:12,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 655 transitions, 13118 flow. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 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) [2024-10-14 19:51:12,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:12,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:12,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:12,664 INFO L124 PetriNetUnfolderBase]: 1242/2059 cut-off events. [2024-10-14 19:51:12,664 INFO L125 PetriNetUnfolderBase]: For 75007/75007 co-relation queries the response was YES. [2024-10-14 19:51:12,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21400 conditions, 2059 events. 1242/2059 cut-off events. For 75007/75007 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11129 event pairs, 33 based on Foata normal form. 1/2060 useless extension candidates. Maximal degree in co-relation 21237. Up to 1827 conditions per place. [2024-10-14 19:51:12,692 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 592 selfloop transitions, 86 changer transitions 5/684 dead transitions. [2024-10-14 19:51:12,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 684 transitions, 14858 flow [2024-10-14 19:51:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:51:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:51:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-10-14 19:51:12,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-10-14 19:51:12,693 INFO L175 Difference]: Start difference. First operand has 371 places, 655 transitions, 13118 flow. Second operand 8 states and 85 transitions. [2024-10-14 19:51:12,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 684 transitions, 14858 flow [2024-10-14 19:51:13,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 684 transitions, 14569 flow, removed 112 selfloop flow, removed 3 redundant places. [2024-10-14 19:51:13,251 INFO L231 Difference]: Finished difference. Result has 376 places, 658 transitions, 13178 flow [2024-10-14 19:51:13,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12833, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13178, PETRI_PLACES=376, PETRI_TRANSITIONS=658} [2024-10-14 19:51:13,252 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 354 predicate places. [2024-10-14 19:51:13,252 INFO L471 AbstractCegarLoop]: Abstraction has has 376 places, 658 transitions, 13178 flow [2024-10-14 19:51:13,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 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) [2024-10-14 19:51:13,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:13,253 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:13,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-10-14 19:51:13,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:13,453 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:13,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:13,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2005925891, now seen corresponding path program 42 times [2024-10-14 19:51:13,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:13,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853340148] [2024-10-14 19:51:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:13,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:13,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:13,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853340148] [2024-10-14 19:51:13,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853340148] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:13,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438569854] [2024-10-14 19:51:13,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:51:13,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:13,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:13,656 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:13,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-10-14 19:51:13,711 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-14 19:51:13,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:13,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:13,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:13,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:13,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438569854] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:13,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:13,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-14 19:51:13,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079517534] [2024-10-14 19:51:13,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:13,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:51:13,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:13,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:51:13,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:51:13,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:13,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 658 transitions, 13178 flow. Second operand has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:13,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:13,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:13,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:14,645 INFO L124 PetriNetUnfolderBase]: 1237/2048 cut-off events. [2024-10-14 19:51:14,645 INFO L125 PetriNetUnfolderBase]: For 71007/71007 co-relation queries the response was YES. [2024-10-14 19:51:14,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21215 conditions, 2048 events. 1237/2048 cut-off events. For 71007/71007 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11025 event pairs, 34 based on Foata normal form. 1/2049 useless extension candidates. Maximal degree in co-relation 21054. Up to 1867 conditions per place. [2024-10-14 19:51:14,673 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 605 selfloop transitions, 70 changer transitions 4/680 dead transitions. [2024-10-14 19:51:14,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 680 transitions, 14737 flow [2024-10-14 19:51:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:51:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:51:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-10-14 19:51:14,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-14 19:51:14,674 INFO L175 Difference]: Start difference. First operand has 376 places, 658 transitions, 13178 flow. Second operand 8 states and 80 transitions. [2024-10-14 19:51:14,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 680 transitions, 14737 flow [2024-10-14 19:51:15,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 680 transitions, 14495 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-10-14 19:51:15,167 INFO L231 Difference]: Finished difference. Result has 379 places, 661 transitions, 13241 flow [2024-10-14 19:51:15,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12938, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13241, PETRI_PLACES=379, PETRI_TRANSITIONS=661} [2024-10-14 19:51:15,168 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 357 predicate places. [2024-10-14 19:51:15,168 INFO L471 AbstractCegarLoop]: Abstraction has has 379 places, 661 transitions, 13241 flow [2024-10-14 19:51:15,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:15,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:15,168 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:15,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-10-14 19:51:15,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:15,369 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:15,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:15,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1761351975, now seen corresponding path program 43 times [2024-10-14 19:51:15,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:15,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828500872] [2024-10-14 19:51:15,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:15,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:15,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:15,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828500872] [2024-10-14 19:51:15,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828500872] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:15,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344950419] [2024-10-14 19:51:15,588 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:51:15,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:15,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:15,589 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:15,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-10-14 19:51:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:15,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:15,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:15,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:15,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344950419] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:15,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:15,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-14 19:51:15,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152222835] [2024-10-14 19:51:15,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:15,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 19:51:15,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:15,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 19:51:15,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-10-14 19:51:15,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:15,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 661 transitions, 13241 flow. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:15,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:15,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:15,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:16,672 INFO L124 PetriNetUnfolderBase]: 1347/2276 cut-off events. [2024-10-14 19:51:16,672 INFO L125 PetriNetUnfolderBase]: For 83717/83717 co-relation queries the response was YES. [2024-10-14 19:51:16,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23749 conditions, 2276 events. 1347/2276 cut-off events. For 83717/83717 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 12909 event pairs, 39 based on Foata normal form. 2/2278 useless extension candidates. Maximal degree in co-relation 23571. Up to 1961 conditions per place. [2024-10-14 19:51:16,699 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 643 selfloop transitions, 94 changer transitions 23/761 dead transitions. [2024-10-14 19:51:16,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 761 transitions, 16568 flow [2024-10-14 19:51:16,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 19:51:16,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 19:51:16,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-10-14 19:51:16,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-14 19:51:16,700 INFO L175 Difference]: Start difference. First operand has 379 places, 661 transitions, 13241 flow. Second operand 12 states and 120 transitions. [2024-10-14 19:51:16,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 761 transitions, 16568 flow [2024-10-14 19:51:17,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 761 transitions, 16298 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-10-14 19:51:17,161 INFO L231 Difference]: Finished difference. Result has 393 places, 707 transitions, 14566 flow [2024-10-14 19:51:17,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12979, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14566, PETRI_PLACES=393, PETRI_TRANSITIONS=707} [2024-10-14 19:51:17,161 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 371 predicate places. [2024-10-14 19:51:17,162 INFO L471 AbstractCegarLoop]: Abstraction has has 393 places, 707 transitions, 14566 flow [2024-10-14 19:51:17,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:17,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:17,162 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:17,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-10-14 19:51:17,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-10-14 19:51:17,362 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:17,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:17,363 INFO L85 PathProgramCache]: Analyzing trace with hash -894747047, now seen corresponding path program 44 times [2024-10-14 19:51:17,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:17,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636742975] [2024-10-14 19:51:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:17,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:17,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:17,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636742975] [2024-10-14 19:51:17,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636742975] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:17,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954704633] [2024-10-14 19:51:17,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:51:17,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:17,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:17,562 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:17,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-10-14 19:51:17,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:51:17,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:17,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:17,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:17,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:17,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954704633] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:17,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:17,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-14 19:51:17,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839304331] [2024-10-14 19:51:17,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:17,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-14 19:51:17,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:17,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-14 19:51:17,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-10-14 19:51:17,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:17,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 707 transitions, 14566 flow. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:17,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:17,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:17,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:18,801 INFO L124 PetriNetUnfolderBase]: 1399/2367 cut-off events. [2024-10-14 19:51:18,801 INFO L125 PetriNetUnfolderBase]: For 97387/97387 co-relation queries the response was YES. [2024-10-14 19:51:18,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25298 conditions, 2367 events. 1399/2367 cut-off events. For 97387/97387 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13564 event pairs, 41 based on Foata normal form. 1/2368 useless extension candidates. Maximal degree in co-relation 25089. Up to 1967 conditions per place. [2024-10-14 19:51:18,833 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 673 selfloop transitions, 111 changer transitions 4/789 dead transitions. [2024-10-14 19:51:18,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 789 transitions, 17660 flow [2024-10-14 19:51:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:51:18,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:51:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-10-14 19:51:18,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-10-14 19:51:18,834 INFO L175 Difference]: Start difference. First operand has 393 places, 707 transitions, 14566 flow. Second operand 10 states and 111 transitions. [2024-10-14 19:51:18,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 789 transitions, 17660 flow [2024-10-14 19:51:19,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 789 transitions, 16988 flow, removed 336 selfloop flow, removed 2 redundant places. [2024-10-14 19:51:19,426 INFO L231 Difference]: Finished difference. Result has 402 places, 738 transitions, 15081 flow [2024-10-14 19:51:19,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=13924, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15081, PETRI_PLACES=402, PETRI_TRANSITIONS=738} [2024-10-14 19:51:19,426 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 380 predicate places. [2024-10-14 19:51:19,426 INFO L471 AbstractCegarLoop]: Abstraction has has 402 places, 738 transitions, 15081 flow [2024-10-14 19:51:19,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:19,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:19,427 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:19,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-10-14 19:51:19,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-10-14 19:51:19,627 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:19,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash -479564391, now seen corresponding path program 45 times [2024-10-14 19:51:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:19,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7995377] [2024-10-14 19:51:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:19,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:19,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:19,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7995377] [2024-10-14 19:51:19,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7995377] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:19,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257875137] [2024-10-14 19:51:19,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:51:19,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:19,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:19,829 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:19,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-10-14 19:51:19,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 19:51:19,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:19,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:19,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:19,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:20,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257875137] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:20,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:20,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-14 19:51:20,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875079998] [2024-10-14 19:51:20,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:20,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:51:20,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:20,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:51:20,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:51:20,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:20,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 738 transitions, 15081 flow. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 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) [2024-10-14 19:51:20,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:20,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:20,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:20,936 INFO L124 PetriNetUnfolderBase]: 1436/2439 cut-off events. [2024-10-14 19:51:20,936 INFO L125 PetriNetUnfolderBase]: For 97396/97396 co-relation queries the response was YES. [2024-10-14 19:51:20,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25509 conditions, 2439 events. 1436/2439 cut-off events. For 97396/97396 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14135 event pairs, 38 based on Foata normal form. 2/2441 useless extension candidates. Maximal degree in co-relation 25308. Up to 2202 conditions per place. [2024-10-14 19:51:20,974 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 698 selfloop transitions, 75 changer transitions 12/786 dead transitions. [2024-10-14 19:51:20,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 786 transitions, 17328 flow [2024-10-14 19:51:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:51:20,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:51:20,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-10-14 19:51:20,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-10-14 19:51:20,975 INFO L175 Difference]: Start difference. First operand has 402 places, 738 transitions, 15081 flow. Second operand 10 states and 99 transitions. [2024-10-14 19:51:20,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 786 transitions, 17328 flow [2024-10-14 19:51:21,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 786 transitions, 16952 flow, removed 154 selfloop flow, removed 3 redundant places. [2024-10-14 19:51:21,601 INFO L231 Difference]: Finished difference. Result has 413 places, 754 transitions, 15355 flow [2024-10-14 19:51:21,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14709, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15355, PETRI_PLACES=413, PETRI_TRANSITIONS=754} [2024-10-14 19:51:21,602 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 391 predicate places. [2024-10-14 19:51:21,602 INFO L471 AbstractCegarLoop]: Abstraction has has 413 places, 754 transitions, 15355 flow [2024-10-14 19:51:21,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 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) [2024-10-14 19:51:21,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:21,602 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:21,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-10-14 19:51:21,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-10-14 19:51:21,803 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:21,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash 823002013, now seen corresponding path program 46 times [2024-10-14 19:51:21,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:21,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448428337] [2024-10-14 19:51:21,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:21,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:21,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:21,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448428337] [2024-10-14 19:51:21,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448428337] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:21,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924233076] [2024-10-14 19:51:21,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:51:21,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:21,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:21,989 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:21,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-10-14 19:51:22,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:51:22,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:22,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:22,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:22,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:22,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924233076] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:22,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:22,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-14 19:51:22,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880713476] [2024-10-14 19:51:22,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:22,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 19:51:22,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:22,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 19:51:22,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-10-14 19:51:22,308 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:22,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 754 transitions, 15355 flow. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:22,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:22,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:22,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:23,208 INFO L124 PetriNetUnfolderBase]: 1424/2411 cut-off events. [2024-10-14 19:51:23,208 INFO L125 PetriNetUnfolderBase]: For 90515/90515 co-relation queries the response was YES. [2024-10-14 19:51:23,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25178 conditions, 2411 events. 1424/2411 cut-off events. For 90515/90515 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13862 event pairs, 38 based on Foata normal form. 1/2412 useless extension candidates. Maximal degree in co-relation 24965. Up to 2091 conditions per place. [2024-10-14 19:51:23,244 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 683 selfloop transitions, 110 changer transitions 4/798 dead transitions. [2024-10-14 19:51:23,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 798 transitions, 17591 flow [2024-10-14 19:51:23,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:51:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:51:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-10-14 19:51:23,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2024-10-14 19:51:23,245 INFO L175 Difference]: Start difference. First operand has 413 places, 754 transitions, 15355 flow. Second operand 11 states and 111 transitions. [2024-10-14 19:51:23,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 798 transitions, 17591 flow [2024-10-14 19:51:23,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 798 transitions, 17185 flow, removed 156 selfloop flow, removed 5 redundant places. [2024-10-14 19:51:23,836 INFO L231 Difference]: Finished difference. Result has 418 places, 762 transitions, 15477 flow [2024-10-14 19:51:23,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14967, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15477, PETRI_PLACES=418, PETRI_TRANSITIONS=762} [2024-10-14 19:51:23,837 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 396 predicate places. [2024-10-14 19:51:23,837 INFO L471 AbstractCegarLoop]: Abstraction has has 418 places, 762 transitions, 15477 flow [2024-10-14 19:51:23,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:23,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:23,837 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:23,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-10-14 19:51:24,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-10-14 19:51:24,038 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:24,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:24,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1399807207, now seen corresponding path program 47 times [2024-10-14 19:51:24,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:24,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401399447] [2024-10-14 19:51:24,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:24,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:24,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:24,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401399447] [2024-10-14 19:51:24,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401399447] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:24,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511314048] [2024-10-14 19:51:24,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:51:24,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:24,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:24,200 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:24,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-10-14 19:51:24,255 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-14 19:51:24,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:24,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:24,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:24,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:24,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511314048] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:24,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:24,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2024-10-14 19:51:24,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108780438] [2024-10-14 19:51:24,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:24,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 19:51:24,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 19:51:24,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-14 19:51:24,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:24,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 762 transitions, 15477 flow. Second operand has 18 states, 18 states have (on average 6.444444444444445) internal successors, (116), 18 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:24,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:24,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:24,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:25,291 INFO L124 PetriNetUnfolderBase]: 1472/2487 cut-off events. [2024-10-14 19:51:25,291 INFO L125 PetriNetUnfolderBase]: For 95027/95027 co-relation queries the response was YES. [2024-10-14 19:51:25,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25761 conditions, 2487 events. 1472/2487 cut-off events. For 95027/95027 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 14356 event pairs, 42 based on Foata normal form. 1/2488 useless extension candidates. Maximal degree in co-relation 25553. Up to 2204 conditions per place. [2024-10-14 19:51:25,331 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 715 selfloop transitions, 94 changer transitions 6/816 dead transitions. [2024-10-14 19:51:25,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 816 transitions, 17967 flow [2024-10-14 19:51:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:51:25,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:51:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-10-14 19:51:25,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-10-14 19:51:25,332 INFO L175 Difference]: Start difference. First operand has 418 places, 762 transitions, 15477 flow. Second operand 8 states and 90 transitions. [2024-10-14 19:51:25,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 816 transitions, 17967 flow [2024-10-14 19:51:25,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 816 transitions, 17629 flow, removed 86 selfloop flow, removed 7 redundant places. [2024-10-14 19:51:25,934 INFO L231 Difference]: Finished difference. Result has 420 places, 783 transitions, 15942 flow [2024-10-14 19:51:25,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15145, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15942, PETRI_PLACES=420, PETRI_TRANSITIONS=783} [2024-10-14 19:51:25,935 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 398 predicate places. [2024-10-14 19:51:25,935 INFO L471 AbstractCegarLoop]: Abstraction has has 420 places, 783 transitions, 15942 flow [2024-10-14 19:51:25,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.444444444444445) internal successors, (116), 18 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:25,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:25,936 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:25,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-10-14 19:51:26,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:26,136 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:26,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash -972501557, now seen corresponding path program 48 times [2024-10-14 19:51:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:26,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943685389] [2024-10-14 19:51:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:26,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:26,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:26,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943685389] [2024-10-14 19:51:26,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943685389] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:26,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137596213] [2024-10-14 19:51:26,301 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:51:26,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:26,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:26,302 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:26,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-10-14 19:51:26,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-14 19:51:26,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:26,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:26,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:26,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:26,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137596213] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:26,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:26,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-10-14 19:51:26,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280091020] [2024-10-14 19:51:26,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:26,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:51:26,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:26,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:51:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:51:26,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:26,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 783 transitions, 15942 flow. Second operand has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:26,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:26,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:26,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:27,398 INFO L124 PetriNetUnfolderBase]: 1467/2476 cut-off events. [2024-10-14 19:51:27,398 INFO L125 PetriNetUnfolderBase]: For 92449/92449 co-relation queries the response was YES. [2024-10-14 19:51:27,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25598 conditions, 2476 events. 1467/2476 cut-off events. For 92449/92449 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 14299 event pairs, 43 based on Foata normal form. 1/2477 useless extension candidates. Maximal degree in co-relation 25392. Up to 2110 conditions per place. [2024-10-14 19:51:27,435 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 703 selfloop transitions, 109 changer transitions 4/817 dead transitions. [2024-10-14 19:51:27,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 817 transitions, 17991 flow [2024-10-14 19:51:27,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:51:27,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:51:27,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-10-14 19:51:27,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-10-14 19:51:27,436 INFO L175 Difference]: Start difference. First operand has 420 places, 783 transitions, 15942 flow. Second operand 10 states and 103 transitions. [2024-10-14 19:51:27,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 817 transitions, 17991 flow [2024-10-14 19:51:28,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 817 transitions, 17677 flow, removed 88 selfloop flow, removed 5 redundant places. [2024-10-14 19:51:28,015 INFO L231 Difference]: Finished difference. Result has 426 places, 786 transitions, 16023 flow [2024-10-14 19:51:28,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15634, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16023, PETRI_PLACES=426, PETRI_TRANSITIONS=786} [2024-10-14 19:51:28,016 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 404 predicate places. [2024-10-14 19:51:28,016 INFO L471 AbstractCegarLoop]: Abstraction has has 426 places, 786 transitions, 16023 flow [2024-10-14 19:51:28,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:28,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:28,016 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:28,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-10-14 19:51:28,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:28,217 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:28,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:28,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1477561717, now seen corresponding path program 49 times [2024-10-14 19:51:28,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:28,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631042109] [2024-10-14 19:51:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:28,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:28,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:28,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631042109] [2024-10-14 19:51:28,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631042109] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:28,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894692277] [2024-10-14 19:51:28,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:51:28,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:28,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:28,386 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:28,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-10-14 19:51:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:28,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 19:51:28,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:28,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:28,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894692277] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:28,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:28,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-14 19:51:28,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747806113] [2024-10-14 19:51:28,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:28,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 19:51:28,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:28,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 19:51:28,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-14 19:51:28,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:28,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 786 transitions, 16023 flow. Second operand has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:28,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:28,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:28,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:29,499 INFO L124 PetriNetUnfolderBase]: 1465/2468 cut-off events. [2024-10-14 19:51:29,499 INFO L125 PetriNetUnfolderBase]: For 89587/89587 co-relation queries the response was YES. [2024-10-14 19:51:29,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25464 conditions, 2468 events. 1465/2468 cut-off events. For 89587/89587 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14182 event pairs, 41 based on Foata normal form. 1/2469 useless extension candidates. Maximal degree in co-relation 25260. Up to 2197 conditions per place. [2024-10-14 19:51:29,536 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 716 selfloop transitions, 92 changer transitions 6/815 dead transitions. [2024-10-14 19:51:29,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 815 transitions, 17887 flow [2024-10-14 19:51:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:51:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:51:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-10-14 19:51:29,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-10-14 19:51:29,537 INFO L175 Difference]: Start difference. First operand has 426 places, 786 transitions, 16023 flow. Second operand 9 states and 94 transitions. [2024-10-14 19:51:29,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 815 transitions, 17887 flow [2024-10-14 19:51:30,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 815 transitions, 17600 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-10-14 19:51:30,103 INFO L231 Difference]: Finished difference. Result has 429 places, 788 transitions, 16042 flow [2024-10-14 19:51:30,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15740, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16042, PETRI_PLACES=429, PETRI_TRANSITIONS=788} [2024-10-14 19:51:30,104 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 407 predicate places. [2024-10-14 19:51:30,104 INFO L471 AbstractCegarLoop]: Abstraction has has 429 places, 788 transitions, 16042 flow [2024-10-14 19:51:30,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.2631578947368425) internal successors, (119), 19 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:30,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:30,104 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:30,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-10-14 19:51:30,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:30,305 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:30,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash -403040810, now seen corresponding path program 50 times [2024-10-14 19:51:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:30,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141760987] [2024-10-14 19:51:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:30,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:30,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:30,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141760987] [2024-10-14 19:51:30,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141760987] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:30,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096515] [2024-10-14 19:51:30,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:51:30,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:30,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:30,375 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:30,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-10-14 19:51:30,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:51:30,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:30,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:51:30,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:30,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:30,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096515] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:30,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:30,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-14 19:51:30,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580345833] [2024-10-14 19:51:30,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:30,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:51:30,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:30,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:51:30,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:51:30,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:30,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 788 transitions, 16042 flow. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:30,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:30,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:30,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:31,433 INFO L124 PetriNetUnfolderBase]: 1929/3271 cut-off events. [2024-10-14 19:51:31,433 INFO L125 PetriNetUnfolderBase]: For 124121/124121 co-relation queries the response was YES. [2024-10-14 19:51:31,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33294 conditions, 3271 events. 1929/3271 cut-off events. For 124121/124121 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 19774 event pairs, 93 based on Foata normal form. 13/3284 useless extension candidates. Maximal degree in co-relation 33065. Up to 1059 conditions per place. [2024-10-14 19:51:31,486 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 649 selfloop transitions, 430 changer transitions 0/1080 dead transitions. [2024-10-14 19:51:31,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1080 transitions, 23785 flow [2024-10-14 19:51:31,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 19:51:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 19:51:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-10-14 19:51:31,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-10-14 19:51:31,487 INFO L175 Difference]: Start difference. First operand has 429 places, 788 transitions, 16042 flow. Second operand 13 states and 126 transitions. [2024-10-14 19:51:31,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1080 transitions, 23785 flow [2024-10-14 19:51:32,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 1080 transitions, 23474 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-10-14 19:51:32,351 INFO L231 Difference]: Finished difference. Result has 441 places, 943 transitions, 20736 flow [2024-10-14 19:51:32,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15821, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20736, PETRI_PLACES=441, PETRI_TRANSITIONS=943} [2024-10-14 19:51:32,352 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 419 predicate places. [2024-10-14 19:51:32,352 INFO L471 AbstractCegarLoop]: Abstraction has has 441 places, 943 transitions, 20736 flow [2024-10-14 19:51:32,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:32,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:32,353 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:32,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-10-14 19:51:32,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:32,553 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:32,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash 580662329, now seen corresponding path program 51 times [2024-10-14 19:51:32,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:32,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628713906] [2024-10-14 19:51:32,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:32,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:32,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:32,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628713906] [2024-10-14 19:51:32,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628713906] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:32,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831852218] [2024-10-14 19:51:32,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:51:32,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:32,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:32,614 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:32,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-10-14 19:51:32,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 19:51:32,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:32,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:51:32,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:32,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:32,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831852218] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:32,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:32,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-14 19:51:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61507510] [2024-10-14 19:51:32,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:32,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:51:32,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:51:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:51:32,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:32,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 943 transitions, 20736 flow. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:32,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:32,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:32,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:33,888 INFO L124 PetriNetUnfolderBase]: 1932/3283 cut-off events. [2024-10-14 19:51:33,888 INFO L125 PetriNetUnfolderBase]: For 136793/136793 co-relation queries the response was YES. [2024-10-14 19:51:33,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35076 conditions, 3283 events. 1932/3283 cut-off events. For 136793/136793 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 19981 event pairs, 360 based on Foata normal form. 3/3286 useless extension candidates. Maximal degree in co-relation 34718. Up to 2061 conditions per place. [2024-10-14 19:51:33,935 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 802 selfloop transitions, 245 changer transitions 12/1060 dead transitions. [2024-10-14 19:51:33,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1060 transitions, 24891 flow [2024-10-14 19:51:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:51:33,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:51:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-10-14 19:51:33,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-14 19:51:33,936 INFO L175 Difference]: Start difference. First operand has 441 places, 943 transitions, 20736 flow. Second operand 9 states and 90 transitions. [2024-10-14 19:51:33,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1060 transitions, 24891 flow [2024-10-14 19:51:34,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 1060 transitions, 24470 flow, removed 120 selfloop flow, removed 3 redundant places. [2024-10-14 19:51:34,855 INFO L231 Difference]: Finished difference. Result has 449 places, 941 transitions, 20763 flow [2024-10-14 19:51:34,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=20315, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20763, PETRI_PLACES=449, PETRI_TRANSITIONS=941} [2024-10-14 19:51:34,855 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 427 predicate places. [2024-10-14 19:51:34,856 INFO L471 AbstractCegarLoop]: Abstraction has has 449 places, 941 transitions, 20763 flow [2024-10-14 19:51:34,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:34,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:34,856 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:34,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-10-14 19:51:35,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:35,056 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:35,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:35,057 INFO L85 PathProgramCache]: Analyzing trace with hash -894717218, now seen corresponding path program 52 times [2024-10-14 19:51:35,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:35,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849139094] [2024-10-14 19:51:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:35,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:35,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:35,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849139094] [2024-10-14 19:51:35,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849139094] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:35,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370360768] [2024-10-14 19:51:35,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:51:35,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:35,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:35,133 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:35,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-10-14 19:51:35,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:51:35,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:35,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:51:35,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:35,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:35,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370360768] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:35,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:35,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-14 19:51:35,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058932406] [2024-10-14 19:51:35,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:35,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 19:51:35,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:35,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 19:51:35,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-10-14 19:51:35,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:35,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 941 transitions, 20763 flow. Second operand has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:35,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:35,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:35,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:36,719 INFO L124 PetriNetUnfolderBase]: 2017/3418 cut-off events. [2024-10-14 19:51:36,719 INFO L125 PetriNetUnfolderBase]: For 147379/147379 co-relation queries the response was YES. [2024-10-14 19:51:36,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36784 conditions, 3418 events. 2017/3418 cut-off events. For 147379/147379 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 20896 event pairs, 184 based on Foata normal form. 16/3434 useless extension candidates. Maximal degree in co-relation 36423. Up to 1537 conditions per place. [2024-10-14 19:51:36,776 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 647 selfloop transitions, 383 changer transitions 0/1031 dead transitions. [2024-10-14 19:51:36,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1031 transitions, 24452 flow [2024-10-14 19:51:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 19:51:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-14 19:51:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 164 transitions. [2024-10-14 19:51:36,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-10-14 19:51:36,777 INFO L175 Difference]: Start difference. First operand has 449 places, 941 transitions, 20763 flow. Second operand 19 states and 164 transitions. [2024-10-14 19:51:36,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1031 transitions, 24452 flow [2024-10-14 19:51:37,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1031 transitions, 23859 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-14 19:51:37,750 INFO L231 Difference]: Finished difference. Result has 464 places, 984 transitions, 22141 flow [2024-10-14 19:51:37,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=20185, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=22141, PETRI_PLACES=464, PETRI_TRANSITIONS=984} [2024-10-14 19:51:37,752 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 442 predicate places. [2024-10-14 19:51:37,752 INFO L471 AbstractCegarLoop]: Abstraction has has 464 places, 984 transitions, 22141 flow [2024-10-14 19:51:37,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:37,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:37,752 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:37,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-10-14 19:51:37,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-10-14 19:51:37,953 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:37,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:37,953 INFO L85 PathProgramCache]: Analyzing trace with hash -953935908, now seen corresponding path program 53 times [2024-10-14 19:51:37,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:37,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175664062] [2024-10-14 19:51:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:37,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:38,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175664062] [2024-10-14 19:51:38,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175664062] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899703499] [2024-10-14 19:51:38,016 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:51:38,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:38,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:38,017 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:38,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-10-14 19:51:38,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-14 19:51:38,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:38,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:51:38,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:38,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:38,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899703499] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:38,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:38,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 19:51:38,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634106688] [2024-10-14 19:51:38,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:38,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:51:38,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:38,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:51:38,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:51:38,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:38,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 984 transitions, 22141 flow. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:38,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:38,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:38,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:39,568 INFO L124 PetriNetUnfolderBase]: 2148/3626 cut-off events. [2024-10-14 19:51:39,568 INFO L125 PetriNetUnfolderBase]: For 179588/179588 co-relation queries the response was YES. [2024-10-14 19:51:39,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41111 conditions, 3626 events. 2148/3626 cut-off events. For 179588/179588 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 22299 event pairs, 151 based on Foata normal form. 20/3646 useless extension candidates. Maximal degree in co-relation 40738. Up to 1267 conditions per place. [2024-10-14 19:51:39,632 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 546 selfloop transitions, 553 changer transitions 0/1100 dead transitions. [2024-10-14 19:51:39,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1100 transitions, 27574 flow [2024-10-14 19:51:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-14 19:51:39,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-14 19:51:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 209 transitions. [2024-10-14 19:51:39,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4354166666666667 [2024-10-14 19:51:39,633 INFO L175 Difference]: Start difference. First operand has 464 places, 984 transitions, 22141 flow. Second operand 24 states and 209 transitions. [2024-10-14 19:51:39,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1100 transitions, 27574 flow [2024-10-14 19:51:40,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 1100 transitions, 26887 flow, removed 263 selfloop flow, removed 4 redundant places. [2024-10-14 19:51:40,706 INFO L231 Difference]: Finished difference. Result has 491 places, 1060 transitions, 26082 flow [2024-10-14 19:51:40,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=21706, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=984, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=26082, PETRI_PLACES=491, PETRI_TRANSITIONS=1060} [2024-10-14 19:51:40,708 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 469 predicate places. [2024-10-14 19:51:40,708 INFO L471 AbstractCegarLoop]: Abstraction has has 491 places, 1060 transitions, 26082 flow [2024-10-14 19:51:40,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:40,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:40,708 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:40,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-10-14 19:51:40,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-10-14 19:51:40,909 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:40,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash -546081856, now seen corresponding path program 54 times [2024-10-14 19:51:40,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:40,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838527002] [2024-10-14 19:51:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:40,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:40,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:40,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838527002] [2024-10-14 19:51:40,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838527002] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:40,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908801363] [2024-10-14 19:51:40,984 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:51:40,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:40,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:40,985 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:40,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-10-14 19:51:41,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-14 19:51:41,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:41,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:51:41,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:41,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:41,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908801363] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:41,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:41,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 19:51:41,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529734729] [2024-10-14 19:51:41,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:41,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:51:41,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:51:41,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:51:41,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:41,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1060 transitions, 26082 flow. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:41,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:41,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:41,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:42,526 INFO L124 PetriNetUnfolderBase]: 2146/3632 cut-off events. [2024-10-14 19:51:42,526 INFO L125 PetriNetUnfolderBase]: For 183233/183233 co-relation queries the response was YES. [2024-10-14 19:51:42,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42710 conditions, 3632 events. 2146/3632 cut-off events. For 183233/183233 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 22494 event pairs, 239 based on Foata normal form. 8/3640 useless extension candidates. Maximal degree in co-relation 42313. Up to 1417 conditions per place. [2024-10-14 19:51:42,588 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 609 selfloop transitions, 480 changer transitions 4/1094 dead transitions. [2024-10-14 19:51:42,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 1094 transitions, 28616 flow [2024-10-14 19:51:42,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 19:51:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-14 19:51:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 163 transitions. [2024-10-14 19:51:42,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42894736842105263 [2024-10-14 19:51:42,589 INFO L175 Difference]: Start difference. First operand has 491 places, 1060 transitions, 26082 flow. Second operand 19 states and 163 transitions. [2024-10-14 19:51:42,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 1094 transitions, 28616 flow [2024-10-14 19:51:44,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 1094 transitions, 26215 flow, removed 927 selfloop flow, removed 18 redundant places. [2024-10-14 19:51:44,047 INFO L231 Difference]: Finished difference. Result has 493 places, 1058 transitions, 24671 flow [2024-10-14 19:51:44,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=23682, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=479, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=24671, PETRI_PLACES=493, PETRI_TRANSITIONS=1058} [2024-10-14 19:51:44,048 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 471 predicate places. [2024-10-14 19:51:44,048 INFO L471 AbstractCegarLoop]: Abstraction has has 493 places, 1058 transitions, 24671 flow [2024-10-14 19:51:44,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:44,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:44,049 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:44,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-10-14 19:51:44,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-10-14 19:51:44,249 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:44,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:44,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1267464512, now seen corresponding path program 55 times [2024-10-14 19:51:44,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:44,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109300214] [2024-10-14 19:51:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:44,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:44,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:44,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109300214] [2024-10-14 19:51:44,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109300214] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:44,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753862486] [2024-10-14 19:51:44,319 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:51:44,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:44,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:44,320 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:44,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-10-14 19:51:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:44,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:51:44,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:44,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:44,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753862486] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:44,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:44,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 19:51:44,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80407174] [2024-10-14 19:51:44,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:44,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:51:44,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:44,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:51:44,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:51:44,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:44,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1058 transitions, 24671 flow. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 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) [2024-10-14 19:51:44,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:44,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:44,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:46,034 INFO L124 PetriNetUnfolderBase]: 2223/3768 cut-off events. [2024-10-14 19:51:46,034 INFO L125 PetriNetUnfolderBase]: For 145216/145216 co-relation queries the response was YES. [2024-10-14 19:51:46,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41110 conditions, 3768 events. 2223/3768 cut-off events. For 145216/145216 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 23471 event pairs, 172 based on Foata normal form. 12/3780 useless extension candidates. Maximal degree in co-relation 40908. Up to 1529 conditions per place. [2024-10-14 19:51:46,088 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 642 selfloop transitions, 495 changer transitions 0/1138 dead transitions. [2024-10-14 19:51:46,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 1138 transitions, 28170 flow [2024-10-14 19:51:46,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-14 19:51:46,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-14 19:51:46,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 179 transitions. [2024-10-14 19:51:46,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4261904761904762 [2024-10-14 19:51:46,089 INFO L175 Difference]: Start difference. First operand has 493 places, 1058 transitions, 24671 flow. Second operand 21 states and 179 transitions. [2024-10-14 19:51:46,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 1138 transitions, 28170 flow [2024-10-14 19:51:47,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1138 transitions, 26999 flow, removed 56 selfloop flow, removed 16 redundant places. [2024-10-14 19:51:47,163 INFO L231 Difference]: Finished difference. Result has 501 places, 1097 transitions, 25700 flow [2024-10-14 19:51:47,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=23560, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=457, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=25700, PETRI_PLACES=501, PETRI_TRANSITIONS=1097} [2024-10-14 19:51:47,164 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 479 predicate places. [2024-10-14 19:51:47,164 INFO L471 AbstractCegarLoop]: Abstraction has has 501 places, 1097 transitions, 25700 flow [2024-10-14 19:51:47,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 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) [2024-10-14 19:51:47,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:47,165 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:47,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-10-14 19:51:47,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:47,365 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:47,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:47,366 INFO L85 PathProgramCache]: Analyzing trace with hash 655626501, now seen corresponding path program 56 times [2024-10-14 19:51:47,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:47,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34203746] [2024-10-14 19:51:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:47,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:47,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:47,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34203746] [2024-10-14 19:51:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34203746] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:47,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520689713] [2024-10-14 19:51:47,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:51:47,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:47,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:47,439 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:47,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-10-14 19:51:47,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:51:47,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:47,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:51:47,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:47,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:47,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520689713] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:47,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:47,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 19:51:47,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432347885] [2024-10-14 19:51:47,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:47,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:51:47,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:47,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:51:47,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:51:47,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:47,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 1097 transitions, 25700 flow. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:47,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:47,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:47,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:51:49,546 INFO L124 PetriNetUnfolderBase]: 2417/4049 cut-off events. [2024-10-14 19:51:49,546 INFO L125 PetriNetUnfolderBase]: For 183385/183385 co-relation queries the response was YES. [2024-10-14 19:51:49,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45862 conditions, 4049 events. 2417/4049 cut-off events. For 183385/183385 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 25267 event pairs, 445 based on Foata normal form. 21/4070 useless extension candidates. Maximal degree in co-relation 45546. Up to 2738 conditions per place. [2024-10-14 19:51:49,621 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 870 selfloop transitions, 428 changer transitions 15/1314 dead transitions. [2024-10-14 19:51:49,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 1314 transitions, 33625 flow [2024-10-14 19:51:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 19:51:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 19:51:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 153 transitions. [2024-10-14 19:51:49,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-14 19:51:49,623 INFO L175 Difference]: Start difference. First operand has 501 places, 1097 transitions, 25700 flow. Second operand 17 states and 153 transitions. [2024-10-14 19:51:49,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 1314 transitions, 33625 flow [2024-10-14 19:51:50,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 1314 transitions, 33181 flow, removed 104 selfloop flow, removed 10 redundant places. [2024-10-14 19:51:50,966 INFO L231 Difference]: Finished difference. Result has 513 places, 1202 transitions, 29910 flow [2024-10-14 19:51:50,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=25306, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1097, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=29910, PETRI_PLACES=513, PETRI_TRANSITIONS=1202} [2024-10-14 19:51:50,967 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 491 predicate places. [2024-10-14 19:51:50,967 INFO L471 AbstractCegarLoop]: Abstraction has has 513 places, 1202 transitions, 29910 flow [2024-10-14 19:51:50,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:50,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:51:50,968 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:51:50,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-10-14 19:51:51,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-10-14 19:51:51,168 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:51:51,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:51:51,169 INFO L85 PathProgramCache]: Analyzing trace with hash 395112251, now seen corresponding path program 57 times [2024-10-14 19:51:51,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:51:51,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670351368] [2024-10-14 19:51:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:51:51,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:51:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:51:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:51,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:51:51,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670351368] [2024-10-14 19:51:51,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670351368] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:51:51,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469515311] [2024-10-14 19:51:51,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:51:51,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:51:51,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:51:51,241 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:51:51,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-10-14 19:51:51,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 19:51:51,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:51:51,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:51:51,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:51:51,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:51,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:51:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:51:51,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469515311] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:51:51,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:51:51,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-14 19:51:51,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967878158] [2024-10-14 19:51:51,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:51:51,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:51:51,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:51:51,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:51:51,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:51:51,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-14 19:51:51,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 1202 transitions, 29910 flow. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:51:51,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:51:51,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-14 19:51:51,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand