./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 fca748b1 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.dd.update-z3-fca748b-m [2024-11-20 17:41:28,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:41:29,084 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:41:29,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:41:29,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:41:29,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:41:29,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:41:29,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:41:29,120 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:41:29,121 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:41:29,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:41:29,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:41:29,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:41:29,125 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:41:29,125 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:41:29,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:41:29,125 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:41:29,126 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:41:29,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:41:29,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:41:29,126 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:41:29,128 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:41:29,129 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:41:29,129 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:41:29,129 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:41:29,130 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:41:29,130 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:41:29,130 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:41:29,130 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:41:29,131 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:41:29,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:41:29,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:41:29,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:41:29,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:41:29,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:41:29,133 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:41:29,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:41:29,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:41:29,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:41:29,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:41:29,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:41:29,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:41:29,135 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-11-20 17:41:29,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:41:29,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:41:29,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:41:29,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:41:29,425 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:41:29,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-20 17:41:30,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:41:31,073 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:41:31,075 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-20 17:41:31,089 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c9f9b37f/97e60faef38541ca812b88a36722b087/FLAGcecfc5c9f [2024-11-20 17:41:31,447 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c9f9b37f/97e60faef38541ca812b88a36722b087 [2024-11-20 17:41:31,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:41:31,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:41:31,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:41:31,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:41:31,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:41:31,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60acad25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31, skipping insertion in model container [2024-11-20 17:41:31,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,488 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:41:31,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:41:31,747 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:41:31,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:41:31,787 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:41:31,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31 WrapperNode [2024-11-20 17:41:31,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:41:31,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:41:31,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:41:31,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:41:31,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,828 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 162 [2024-11-20 17:41:31,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:41:31,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:41:31,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:41:31,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:41:31,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,845 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,862 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 17:41:31,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:41:31,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:41:31,878 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:41:31,878 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:41:31,879 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (1/1) ... [2024-11-20 17:41:31,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:41:31,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:31,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 17:41:31,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 17:41:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:41:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 17:41:31,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 17:41:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 17:41:31,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 17:41:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:41:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:41:31,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:41:31,980 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:41:32,093 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:41:32,095 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:41:32,392 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:41:32,392 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:41:32,705 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:41:32,705 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 17:41:32,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:41:32 BoogieIcfgContainer [2024-11-20 17:41:32,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:41:32,712 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:41:32,712 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:41:32,716 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:41:32,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:41:31" (1/3) ... [2024-11-20 17:41:32,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7268bb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:41:32, skipping insertion in model container [2024-11-20 17:41:32,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:31" (2/3) ... [2024-11-20 17:41:32,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7268bb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:41:32, skipping insertion in model container [2024-11-20 17:41:32,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:41:32" (3/3) ... [2024-11-20 17:41:32,723 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-11-20 17:41:32,753 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:41:32,754 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 17:41:32,754 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:41:32,829 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 17:41:32,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-11-20 17:41:32,886 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-20 17:41:32,886 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:41:32,891 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. [2024-11-20 17:41:32,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-11-20 17:41:32,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-11-20 17:41:32,903 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:41:32,909 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;@37c601ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:41:32,910 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 17:41:32,917 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:41:32,918 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-20 17:41:32,918 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:41:32,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:32,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:32,919 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)] === [2024-11-20 17:41:32,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:32,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1376092147, now seen corresponding path program 1 times [2024-11-20 17:41:32,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:32,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556936973] [2024-11-20 17:41:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:33,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:33,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556936973] [2024-11-20 17:41:33,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556936973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:33,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:33,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:41:33,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23224531] [2024-11-20 17:41:33,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:33,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:33,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:33,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:33,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:33,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:33,554 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) [2024-11-20 17:41:33,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:33,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:33,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:33,740 INFO L124 PetriNetUnfolderBase]: 67/128 cut-off events. [2024-11-20 17:41:33,741 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-20 17:41:33,743 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. [2024-11-20 17:41:33,746 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 25 selfloop transitions, 5 changer transitions 4/35 dead transitions. [2024-11-20 17:41:33,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 35 transitions, 168 flow [2024-11-20 17:41:33,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:33,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-11-20 17:41:33,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-20 17:41:33,761 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 5 states and 57 transitions. [2024-11-20 17:41:33,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 35 transitions, 168 flow [2024-11-20 17:41:33,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 17:41:33,767 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 68 flow [2024-11-20 17:41:33,769 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} [2024-11-20 17:41:33,773 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2024-11-20 17:41:33,773 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 68 flow [2024-11-20 17:41:33,773 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) [2024-11-20 17:41:33,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:33,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:33,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:41:33,775 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)] === [2024-11-20 17:41:33,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:33,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2082207311, now seen corresponding path program 2 times [2024-11-20 17:41:33,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:33,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284891866] [2024-11-20 17:41:33,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:33,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:34,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:34,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284891866] [2024-11-20 17:41:34,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284891866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:34,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:34,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:41:34,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710847736] [2024-11-20 17:41:34,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:34,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:34,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:34,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:34,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:34,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:34,050 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) [2024-11-20 17:41:34,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:34,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:34,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:34,206 INFO L124 PetriNetUnfolderBase]: 66/121 cut-off events. [2024-11-20 17:41:34,207 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-20 17:41:34,209 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. [2024-11-20 17:41:34,211 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 24 selfloop transitions, 6 changer transitions 4/35 dead transitions. [2024-11-20 17:41:34,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 182 flow [2024-11-20 17:41:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:34,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-11-20 17:41:34,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-11-20 17:41:34,215 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 68 flow. Second operand 5 states and 54 transitions. [2024-11-20 17:41:34,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 182 flow [2024-11-20 17:41:34,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 180 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 17:41:34,219 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 100 flow [2024-11-20 17:41:34,219 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} [2024-11-20 17:41:34,220 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 6 predicate places. [2024-11-20 17:41:34,220 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 100 flow [2024-11-20 17:41:34,221 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) [2024-11-20 17:41:34,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:34,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:34,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:41:34,222 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)] === [2024-11-20 17:41:34,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:34,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1488777393, now seen corresponding path program 1 times [2024-11-20 17:41:34,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:34,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055240156] [2024-11-20 17:41:34,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:34,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:34,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:34,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:34,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055240156] [2024-11-20 17:41:34,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055240156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:34,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:34,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:34,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348746018] [2024-11-20 17:41:34,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:34,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:34,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:34,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:34,324 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) [2024-11-20 17:41:34,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:34,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:34,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:34,431 INFO L124 PetriNetUnfolderBase]: 80/140 cut-off events. [2024-11-20 17:41:34,432 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-11-20 17:41:34,433 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. [2024-11-20 17:41:34,434 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 24 selfloop transitions, 10 changer transitions 3/38 dead transitions. [2024-11-20 17:41:34,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 256 flow [2024-11-20 17:41:34,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:34,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-11-20 17:41:34,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 17:41:34,438 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 100 flow. Second operand 5 states and 50 transitions. [2024-11-20 17:41:34,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 256 flow [2024-11-20 17:41:34,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 242 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 17:41:34,440 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 168 flow [2024-11-20 17:41:34,440 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} [2024-11-20 17:41:34,442 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 10 predicate places. [2024-11-20 17:41:34,442 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 168 flow [2024-11-20 17:41:34,443 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) [2024-11-20 17:41:34,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:34,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:34,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 17:41:34,444 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)] === [2024-11-20 17:41:34,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:34,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1405972326, now seen corresponding path program 1 times [2024-11-20 17:41:34,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:34,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268370506] [2024-11-20 17:41:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:34,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:34,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:34,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268370506] [2024-11-20 17:41:34,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268370506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:34,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313361683] [2024-11-20 17:41:34,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:34,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:34,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:34,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:34,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 17:41:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:34,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 17:41:34,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:34,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:34,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313361683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:34,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:34,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-20 17:41:34,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469485267] [2024-11-20 17:41:34,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:34,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 17:41:34,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:34,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 17:41:34,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 17:41:34,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:34,688 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) [2024-11-20 17:41:34,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:34,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:34,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:34,860 INFO L124 PetriNetUnfolderBase]: 90/161 cut-off events. [2024-11-20 17:41:34,860 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-11-20 17:41:34,862 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. [2024-11-20 17:41:34,863 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 42 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-11-20 17:41:34,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 385 flow [2024-11-20 17:41:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:41:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:41:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-11-20 17:41:34,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-20 17:41:34,866 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 168 flow. Second operand 7 states and 74 transitions. [2024-11-20 17:41:34,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 385 flow [2024-11-20 17:41:34,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 56 transitions, 364 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-20 17:41:34,872 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 211 flow [2024-11-20 17:41:34,872 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} [2024-11-20 17:41:34,873 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 15 predicate places. [2024-11-20 17:41:34,873 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 211 flow [2024-11-20 17:41:34,873 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) [2024-11-20 17:41:34,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:34,873 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:34,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 17:41:35,077 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 [2024-11-20 17:41:35,079 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)] === [2024-11-20 17:41:35,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:35,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2005550949, now seen corresponding path program 2 times [2024-11-20 17:41:35,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:35,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574753037] [2024-11-20 17:41:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:35,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:35,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574753037] [2024-11-20 17:41:35,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574753037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:35,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:35,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:35,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503483060] [2024-11-20 17:41:35,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:35,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:35,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:35,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:35,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:35,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:35,153 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) [2024-11-20 17:41:35,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:35,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:35,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:35,232 INFO L124 PetriNetUnfolderBase]: 89/163 cut-off events. [2024-11-20 17:41:35,232 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-11-20 17:41:35,233 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. [2024-11-20 17:41:35,234 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 37 selfloop transitions, 7 changer transitions 5/50 dead transitions. [2024-11-20 17:41:35,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 393 flow [2024-11-20 17:41:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:35,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:35,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-11-20 17:41:35,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-11-20 17:41:35,235 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 211 flow. Second operand 5 states and 54 transitions. [2024-11-20 17:41:35,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 393 flow [2024-11-20 17:41:35,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 368 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-20 17:41:35,239 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 208 flow [2024-11-20 17:41:35,240 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} [2024-11-20 17:41:35,240 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 20 predicate places. [2024-11-20 17:41:35,240 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 208 flow [2024-11-20 17:41:35,241 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) [2024-11-20 17:41:35,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:35,241 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:35,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 17:41:35,241 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)] === [2024-11-20 17:41:35,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:35,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1198369694, now seen corresponding path program 2 times [2024-11-20 17:41:35,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:35,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53865302] [2024-11-20 17:41:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:35,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:35,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53865302] [2024-11-20 17:41:35,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53865302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708885687] [2024-11-20 17:41:35,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:41:35,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:35,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:35,307 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:35,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 17:41:35,366 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:35,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:35,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 17:41:35,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:35,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:35,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708885687] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:35,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:35,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-20 17:41:35,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346964718] [2024-11-20 17:41:35,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:35,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 17:41:35,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:35,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 17:41:35,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 17:41:35,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:35,433 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) [2024-11-20 17:41:35,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:35,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:35,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:35,561 INFO L124 PetriNetUnfolderBase]: 106/187 cut-off events. [2024-11-20 17:41:35,561 INFO L125 PetriNetUnfolderBase]: For 446/446 co-relation queries the response was YES. [2024-11-20 17:41:35,561 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. [2024-11-20 17:41:35,563 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 28 selfloop transitions, 21 changer transitions 1/51 dead transitions. [2024-11-20 17:41:35,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 428 flow [2024-11-20 17:41:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:41:35,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:41:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2024-11-20 17:41:35,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-20 17:41:35,564 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 208 flow. Second operand 6 states and 59 transitions. [2024-11-20 17:41:35,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 428 flow [2024-11-20 17:41:35,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 409 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-20 17:41:35,568 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 345 flow [2024-11-20 17:41:35,568 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} [2024-11-20 17:41:35,569 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 25 predicate places. [2024-11-20 17:41:35,569 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 345 flow [2024-11-20 17:41:35,569 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) [2024-11-20 17:41:35,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:35,569 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:35,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:35,773 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 [2024-11-20 17:41:35,774 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)] === [2024-11-20 17:41:35,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:35,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1987061216, now seen corresponding path program 3 times [2024-11-20 17:41:35,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:35,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151169241] [2024-11-20 17:41:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:35,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:35,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:35,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151169241] [2024-11-20 17:41:35,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151169241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:35,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:35,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:35,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482259790] [2024-11-20 17:41:35,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:35,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:35,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:35,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:35,832 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) [2024-11-20 17:41:35,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:35,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:35,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:35,921 INFO L124 PetriNetUnfolderBase]: 104/190 cut-off events. [2024-11-20 17:41:35,924 INFO L125 PetriNetUnfolderBase]: For 626/626 co-relation queries the response was YES. [2024-11-20 17:41:35,925 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. [2024-11-20 17:41:35,927 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 33 selfloop transitions, 16 changer transitions 3/53 dead transitions. [2024-11-20 17:41:35,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 501 flow [2024-11-20 17:41:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-11-20 17:41:35,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 17:41:35,929 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 345 flow. Second operand 5 states and 50 transitions. [2024-11-20 17:41:35,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 501 flow [2024-11-20 17:41:35,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 461 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-11-20 17:41:35,935 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 332 flow [2024-11-20 17:41:35,935 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} [2024-11-20 17:41:35,936 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 29 predicate places. [2024-11-20 17:41:35,937 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 332 flow [2024-11-20 17:41:35,937 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) [2024-11-20 17:41:35,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:35,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:35,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 17:41:35,938 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)] === [2024-11-20 17:41:35,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:35,938 INFO L85 PathProgramCache]: Analyzing trace with hash -369403695, now seen corresponding path program 3 times [2024-11-20 17:41:35,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:35,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730443606] [2024-11-20 17:41:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:35,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:35,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730443606] [2024-11-20 17:41:35,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730443606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428499879] [2024-11-20 17:41:35,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:41:35,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:35,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:35,996 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) [2024-11-20 17:41:35,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 17:41:36,058 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 17:41:36,058 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:36,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 17:41:36,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:36,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:36,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428499879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:36,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:36,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-20 17:41:36,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781097902] [2024-11-20 17:41:36,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:36,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 17:41:36,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:36,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 17:41:36,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 17:41:36,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:36,113 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) [2024-11-20 17:41:36,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:36,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:36,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:36,250 INFO L124 PetriNetUnfolderBase]: 108/194 cut-off events. [2024-11-20 17:41:36,251 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2024-11-20 17:41:36,251 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. [2024-11-20 17:41:36,253 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 41 selfloop transitions, 22 changer transitions 0/64 dead transitions. [2024-11-20 17:41:36,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 589 flow [2024-11-20 17:41:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:41:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:41:36,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-11-20 17:41:36,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-11-20 17:41:36,256 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 332 flow. Second operand 7 states and 69 transitions. [2024-11-20 17:41:36,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 589 flow [2024-11-20 17:41:36,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 547 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-20 17:41:36,260 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 392 flow [2024-11-20 17:41:36,261 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} [2024-11-20 17:41:36,261 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2024-11-20 17:41:36,261 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 392 flow [2024-11-20 17:41:36,262 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) [2024-11-20 17:41:36,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:36,262 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:36,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 17:41:36,462 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 [2024-11-20 17:41:36,463 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)] === [2024-11-20 17:41:36,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:36,464 INFO L85 PathProgramCache]: Analyzing trace with hash -376227406, now seen corresponding path program 4 times [2024-11-20 17:41:36,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:36,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798916152] [2024-11-20 17:41:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:36,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:36,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:36,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798916152] [2024-11-20 17:41:36,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798916152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:36,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:36,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:36,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816482011] [2024-11-20 17:41:36,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:36,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:36,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:36,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:36,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:36,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:36,520 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) [2024-11-20 17:41:36,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:36,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:36,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:36,598 INFO L124 PetriNetUnfolderBase]: 107/195 cut-off events. [2024-11-20 17:41:36,599 INFO L125 PetriNetUnfolderBase]: For 822/822 co-relation queries the response was YES. [2024-11-20 17:41:36,600 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. [2024-11-20 17:41:36,601 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 34 selfloop transitions, 15 changer transitions 2/52 dead transitions. [2024-11-20 17:41:36,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 531 flow [2024-11-20 17:41:36,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-11-20 17:41:36,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-20 17:41:36,602 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 392 flow. Second operand 5 states and 48 transitions. [2024-11-20 17:41:36,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 531 flow [2024-11-20 17:41:36,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 475 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-20 17:41:36,607 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 357 flow [2024-11-20 17:41:36,607 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} [2024-11-20 17:41:36,608 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 32 predicate places. [2024-11-20 17:41:36,608 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 357 flow [2024-11-20 17:41:36,608 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) [2024-11-20 17:41:36,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:36,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:36,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 17:41:36,609 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)] === [2024-11-20 17:41:36,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash -425271452, now seen corresponding path program 5 times [2024-11-20 17:41:36,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:36,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412346059] [2024-11-20 17:41:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:36,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:36,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:36,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412346059] [2024-11-20 17:41:36,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412346059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:36,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87639026] [2024-11-20 17:41:36,658 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:41:36,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:36,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:36,661 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) [2024-11-20 17:41:36,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 17:41:36,719 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:36,719 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:36,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 17:41:36,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:36,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:36,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87639026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:36,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:36,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-20 17:41:36,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465520181] [2024-11-20 17:41:36,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:36,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 17:41:36,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:36,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 17:41:36,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-20 17:41:36,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:36,782 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) [2024-11-20 17:41:36,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:36,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:36,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:36,935 INFO L124 PetriNetUnfolderBase]: 108/199 cut-off events. [2024-11-20 17:41:36,937 INFO L125 PetriNetUnfolderBase]: For 598/598 co-relation queries the response was YES. [2024-11-20 17:41:36,938 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. [2024-11-20 17:41:36,939 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 41 selfloop transitions, 27 changer transitions 0/69 dead transitions. [2024-11-20 17:41:36,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 612 flow [2024-11-20 17:41:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 17:41:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 17:41:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2024-11-20 17:41:36,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-11-20 17:41:36,941 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 357 flow. Second operand 10 states and 91 transitions. [2024-11-20 17:41:36,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 612 flow [2024-11-20 17:41:36,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 582 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:41:36,946 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 422 flow [2024-11-20 17:41:36,946 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} [2024-11-20 17:41:36,947 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-11-20 17:41:36,947 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 422 flow [2024-11-20 17:41:36,947 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) [2024-11-20 17:41:36,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:36,947 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:36,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 17:41:37,151 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 [2024-11-20 17:41:37,152 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)] === [2024-11-20 17:41:37,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:37,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2070215271, now seen corresponding path program 4 times [2024-11-20 17:41:37,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:37,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811306457] [2024-11-20 17:41:37,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:37,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:37,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:37,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811306457] [2024-11-20 17:41:37,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811306457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:37,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:37,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:37,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077556420] [2024-11-20 17:41:37,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:37,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:37,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:37,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:37,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:37,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:37,222 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) [2024-11-20 17:41:37,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:37,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:37,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:37,311 INFO L124 PetriNetUnfolderBase]: 114/209 cut-off events. [2024-11-20 17:41:37,311 INFO L125 PetriNetUnfolderBase]: For 734/734 co-relation queries the response was YES. [2024-11-20 17:41:37,312 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. [2024-11-20 17:41:37,313 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 42 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-11-20 17:41:37,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 604 flow [2024-11-20 17:41:37,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-11-20 17:41:37,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 17:41:37,315 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 422 flow. Second operand 5 states and 50 transitions. [2024-11-20 17:41:37,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 604 flow [2024-11-20 17:41:37,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 534 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-20 17:41:37,320 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 395 flow [2024-11-20 17:41:37,320 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} [2024-11-20 17:41:37,321 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 38 predicate places. [2024-11-20 17:41:37,321 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 395 flow [2024-11-20 17:41:37,321 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) [2024-11-20 17:41:37,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:37,322 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:37,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 17:41:37,322 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)] === [2024-11-20 17:41:37,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1295731652, now seen corresponding path program 6 times [2024-11-20 17:41:37,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:37,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101620634] [2024-11-20 17:41:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:37,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:37,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:37,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101620634] [2024-11-20 17:41:37,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101620634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:37,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:37,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:37,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531392104] [2024-11-20 17:41:37,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:37,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:37,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:37,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:37,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:37,379 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:37,379 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) [2024-11-20 17:41:37,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:37,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:37,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:37,453 INFO L124 PetriNetUnfolderBase]: 110/197 cut-off events. [2024-11-20 17:41:37,453 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-11-20 17:41:37,454 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. [2024-11-20 17:41:37,456 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 32 selfloop transitions, 19 changer transitions 2/54 dead transitions. [2024-11-20 17:41:37,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 509 flow [2024-11-20 17:41:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-20 17:41:37,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-20 17:41:37,457 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 395 flow. Second operand 5 states and 47 transitions. [2024-11-20 17:41:37,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 509 flow [2024-11-20 17:41:37,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 473 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-20 17:41:37,461 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 378 flow [2024-11-20 17:41:37,461 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} [2024-11-20 17:41:37,462 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-11-20 17:41:37,462 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 378 flow [2024-11-20 17:41:37,462 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) [2024-11-20 17:41:37,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:37,463 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:37,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 17:41:37,463 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)] === [2024-11-20 17:41:37,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:37,463 INFO L85 PathProgramCache]: Analyzing trace with hash -350969669, now seen corresponding path program 5 times [2024-11-20 17:41:37,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:37,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191725947] [2024-11-20 17:41:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:37,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:37,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:37,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191725947] [2024-11-20 17:41:37,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191725947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:37,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565643525] [2024-11-20 17:41:37,541 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:41:37,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:37,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:37,544 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) [2024-11-20 17:41:37,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 17:41:37,600 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:37,601 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:37,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 17:41:37,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:37,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:37,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565643525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:37,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:37,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-20 17:41:37,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661399721] [2024-11-20 17:41:37,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:37,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 17:41:37,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 17:41:37,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-20 17:41:37,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:37,666 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) [2024-11-20 17:41:37,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:37,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:37,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:37,799 INFO L124 PetriNetUnfolderBase]: 111/200 cut-off events. [2024-11-20 17:41:37,800 INFO L125 PetriNetUnfolderBase]: For 535/535 co-relation queries the response was YES. [2024-11-20 17:41:37,800 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. [2024-11-20 17:41:37,802 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 30 changer transitions 0/69 dead transitions. [2024-11-20 17:41:37,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 626 flow [2024-11-20 17:41:37,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 17:41:37,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 17:41:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 87 transitions. [2024-11-20 17:41:37,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-11-20 17:41:37,803 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 378 flow. Second operand 10 states and 87 transitions. [2024-11-20 17:41:37,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 626 flow [2024-11-20 17:41:37,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 572 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-20 17:41:37,807 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 437 flow [2024-11-20 17:41:37,807 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} [2024-11-20 17:41:37,808 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 42 predicate places. [2024-11-20 17:41:37,808 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 437 flow [2024-11-20 17:41:37,808 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) [2024-11-20 17:41:37,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:37,808 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:37,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 17:41:38,009 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 [2024-11-20 17:41:38,009 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)] === [2024-11-20 17:41:38,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash -243034563, now seen corresponding path program 6 times [2024-11-20 17:41:38,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:38,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358675402] [2024-11-20 17:41:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:38,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:38,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:38,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:38,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358675402] [2024-11-20 17:41:38,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358675402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:38,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:38,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:38,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857980702] [2024-11-20 17:41:38,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:38,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:38,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:38,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:38,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:38,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:38,061 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) [2024-11-20 17:41:38,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:38,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:38,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:38,130 INFO L124 PetriNetUnfolderBase]: 104/184 cut-off events. [2024-11-20 17:41:38,131 INFO L125 PetriNetUnfolderBase]: For 551/551 co-relation queries the response was YES. [2024-11-20 17:41:38,132 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. [2024-11-20 17:41:38,133 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 37 selfloop transitions, 17 changer transitions 3/58 dead transitions. [2024-11-20 17:41:38,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 563 flow [2024-11-20 17:41:38,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-20 17:41:38,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-20 17:41:38,135 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 437 flow. Second operand 5 states and 47 transitions. [2024-11-20 17:41:38,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 563 flow [2024-11-20 17:41:38,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 473 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-11-20 17:41:38,139 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 362 flow [2024-11-20 17:41:38,139 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} [2024-11-20 17:41:38,140 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-11-20 17:41:38,140 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 362 flow [2024-11-20 17:41:38,140 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) [2024-11-20 17:41:38,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:38,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:38,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 17:41:38,141 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)] === [2024-11-20 17:41:38,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:38,141 INFO L85 PathProgramCache]: Analyzing trace with hash -884107482, now seen corresponding path program 1 times [2024-11-20 17:41:38,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:38,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858699539] [2024-11-20 17:41:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:38,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:38,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858699539] [2024-11-20 17:41:38,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858699539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868435415] [2024-11-20 17:41:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:38,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:38,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:38,323 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) [2024-11-20 17:41:38,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 17:41:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:38,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:41:38,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:38,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:38,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868435415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:38,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:38,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 17:41:38,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071051801] [2024-11-20 17:41:38,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:38,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:38,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:38,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:38,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:38,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:38,662 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) [2024-11-20 17:41:38,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:38,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:38,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:38,857 INFO L124 PetriNetUnfolderBase]: 152/279 cut-off events. [2024-11-20 17:41:38,857 INFO L125 PetriNetUnfolderBase]: For 757/757 co-relation queries the response was YES. [2024-11-20 17:41:38,859 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. [2024-11-20 17:41:38,860 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 65 selfloop transitions, 19 changer transitions 4/89 dead transitions. [2024-11-20 17:41:38,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 755 flow [2024-11-20 17:41:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:41:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:41:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-11-20 17:41:38,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-20 17:41:38,862 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 362 flow. Second operand 7 states and 75 transitions. [2024-11-20 17:41:38,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 755 flow [2024-11-20 17:41:38,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 705 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:41:38,866 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 494 flow [2024-11-20 17:41:38,866 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} [2024-11-20 17:41:38,866 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 43 predicate places. [2024-11-20 17:41:38,867 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 494 flow [2024-11-20 17:41:38,867 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) [2024-11-20 17:41:38,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:38,867 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:38,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:39,068 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 [2024-11-20 17:41:39,068 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)] === [2024-11-20 17:41:39,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1058757058, now seen corresponding path program 2 times [2024-11-20 17:41:39,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:39,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490556903] [2024-11-20 17:41:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:39,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:39,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:39,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490556903] [2024-11-20 17:41:39,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490556903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:39,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660007264] [2024-11-20 17:41:39,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:41:39,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:39,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:39,250 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) [2024-11-20 17:41:39,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 17:41:39,305 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:39,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:39,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:41:39,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:39,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:39,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660007264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:39,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:39,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 17:41:39,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885261933] [2024-11-20 17:41:39,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:39,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:39,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:39,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:39,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:39,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:39,579 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) [2024-11-20 17:41:39,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:39,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:39,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:39,791 INFO L124 PetriNetUnfolderBase]: 150/271 cut-off events. [2024-11-20 17:41:39,791 INFO L125 PetriNetUnfolderBase]: For 885/885 co-relation queries the response was YES. [2024-11-20 17:41:39,794 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. [2024-11-20 17:41:39,796 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 61 selfloop transitions, 20 changer transitions 4/86 dead transitions. [2024-11-20 17:41:39,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 782 flow [2024-11-20 17:41:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:41:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:41:39,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-11-20 17:41:39,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 17:41:39,798 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 494 flow. Second operand 7 states and 70 transitions. [2024-11-20 17:41:39,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 782 flow [2024-11-20 17:41:39,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 734 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-11-20 17:41:39,805 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 564 flow [2024-11-20 17:41:39,805 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} [2024-11-20 17:41:39,806 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 48 predicate places. [2024-11-20 17:41:39,806 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 564 flow [2024-11-20 17:41:39,806 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) [2024-11-20 17:41:39,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:39,806 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:39,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 17:41:40,007 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 [2024-11-20 17:41:40,007 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)] === [2024-11-20 17:41:40,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:40,008 INFO L85 PathProgramCache]: Analyzing trace with hash -268386566, now seen corresponding path program 3 times [2024-11-20 17:41:40,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:40,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229939551] [2024-11-20 17:41:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:40,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:40,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:40,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229939551] [2024-11-20 17:41:40,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229939551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:40,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687263596] [2024-11-20 17:41:40,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:41:40,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:40,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:40,164 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) [2024-11-20 17:41:40,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 17:41:40,226 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-20 17:41:40,226 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:40,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:41:40,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:40,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:40,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687263596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:40,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:40,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-20 17:41:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294190885] [2024-11-20 17:41:40,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:40,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:41:40,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:40,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:41:40,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:41:40,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:40,468 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) [2024-11-20 17:41:40,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:40,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:40,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:40,661 INFO L124 PetriNetUnfolderBase]: 148/263 cut-off events. [2024-11-20 17:41:40,661 INFO L125 PetriNetUnfolderBase]: For 901/901 co-relation queries the response was YES. [2024-11-20 17:41:40,662 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. [2024-11-20 17:41:40,664 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 60 selfloop transitions, 21 changer transitions 4/86 dead transitions. [2024-11-20 17:41:40,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 816 flow [2024-11-20 17:41:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:41:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:41:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-11-20 17:41:40,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 17:41:40,665 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 564 flow. Second operand 7 states and 70 transitions. [2024-11-20 17:41:40,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 816 flow [2024-11-20 17:41:40,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 774 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-20 17:41:40,671 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 604 flow [2024-11-20 17:41:40,671 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} [2024-11-20 17:41:40,671 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 52 predicate places. [2024-11-20 17:41:40,672 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 604 flow [2024-11-20 17:41:40,672 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) [2024-11-20 17:41:40,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:40,672 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:40,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 17:41:40,875 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 [2024-11-20 17:41:40,876 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)] === [2024-11-20 17:41:40,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash 465017658, now seen corresponding path program 4 times [2024-11-20 17:41:40,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:40,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355785559] [2024-11-20 17:41:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:40,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:41,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:41,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355785559] [2024-11-20 17:41:41,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355785559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:41,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264850215] [2024-11-20 17:41:41,063 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:41:41,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:41,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:41,065 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) [2024-11-20 17:41:41,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 17:41:41,123 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:41:41,123 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:41,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:41:41,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:41,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:41,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264850215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:41,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:41,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 17:41:41,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171207772] [2024-11-20 17:41:41,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:41,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:41,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:41,361 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) [2024-11-20 17:41:41,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:41,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:41,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:41,574 INFO L124 PetriNetUnfolderBase]: 173/306 cut-off events. [2024-11-20 17:41:41,574 INFO L125 PetriNetUnfolderBase]: For 1112/1112 co-relation queries the response was YES. [2024-11-20 17:41:41,575 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. [2024-11-20 17:41:41,577 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 70 selfloop transitions, 19 changer transitions 4/94 dead transitions. [2024-11-20 17:41:41,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 94 transitions, 925 flow [2024-11-20 17:41:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:41:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:41:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2024-11-20 17:41:41,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-11-20 17:41:41,579 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 604 flow. Second operand 7 states and 64 transitions. [2024-11-20 17:41:41,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 94 transitions, 925 flow [2024-11-20 17:41:41,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 94 transitions, 868 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-20 17:41:41,586 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 719 flow [2024-11-20 17:41:41,586 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} [2024-11-20 17:41:41,587 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 57 predicate places. [2024-11-20 17:41:41,587 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 719 flow [2024-11-20 17:41:41,587 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) [2024-11-20 17:41:41,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:41,587 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:41,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 17:41:41,788 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 [2024-11-20 17:41:41,788 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)] === [2024-11-20 17:41:41,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:41,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1335848292, now seen corresponding path program 5 times [2024-11-20 17:41:41,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:41,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583535286] [2024-11-20 17:41:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:41,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:41,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:41,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583535286] [2024-11-20 17:41:41,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583535286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:41,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147916784] [2024-11-20 17:41:41,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:41:41,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:41,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:41,953 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) [2024-11-20 17:41:41,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 17:41:42,010 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 17:41:42,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:42,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:41:42,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:42,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:42,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147916784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:42,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:42,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 17:41:42,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577188068] [2024-11-20 17:41:42,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:42,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:42,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:42,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:42,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:42,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:42,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 719 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) [2024-11-20 17:41:42,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:42,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:42,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:42,444 INFO L124 PetriNetUnfolderBase]: 185/331 cut-off events. [2024-11-20 17:41:42,444 INFO L125 PetriNetUnfolderBase]: For 1341/1341 co-relation queries the response was YES. [2024-11-20 17:41:42,446 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. [2024-11-20 17:41:42,447 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 77 selfloop transitions, 20 changer transitions 4/102 dead transitions. [2024-11-20 17:41:42,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 102 transitions, 1055 flow [2024-11-20 17:41:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:41:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:41:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-11-20 17:41:42,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-11-20 17:41:42,449 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 719 flow. Second operand 7 states and 69 transitions. [2024-11-20 17:41:42,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 102 transitions, 1055 flow [2024-11-20 17:41:42,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 102 transitions, 1006 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-20 17:41:42,457 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 790 flow [2024-11-20 17:41:42,457 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} [2024-11-20 17:41:42,457 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 63 predicate places. [2024-11-20 17:41:42,457 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 790 flow [2024-11-20 17:41:42,457 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) [2024-11-20 17:41:42,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:42,458 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:42,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:42,658 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 [2024-11-20 17:41:42,658 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)] === [2024-11-20 17:41:42,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1252731402, now seen corresponding path program 6 times [2024-11-20 17:41:42,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:42,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531918900] [2024-11-20 17:41:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:42,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:42,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:42,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531918900] [2024-11-20 17:41:42,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531918900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:42,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836684848] [2024-11-20 17:41:42,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:41:42,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:42,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:42,828 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) [2024-11-20 17:41:42,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 17:41:42,894 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-20 17:41:42,895 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:42,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:41:42,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:42,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:43,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836684848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:43,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:43,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 17:41:43,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721388525] [2024-11-20 17:41:43,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:43,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:43,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:43,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:43,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:43,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:43,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 86 transitions, 790 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) [2024-11-20 17:41:43,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:43,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:43,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:43,334 INFO L124 PetriNetUnfolderBase]: 183/323 cut-off events. [2024-11-20 17:41:43,334 INFO L125 PetriNetUnfolderBase]: For 1616/1616 co-relation queries the response was YES. [2024-11-20 17:41:43,338 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 1183 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. [2024-11-20 17:41:43,339 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 75 selfloop transitions, 21 changer transitions 4/101 dead transitions. [2024-11-20 17:41:43,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 101 transitions, 1078 flow [2024-11-20 17:41:43,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:41:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:41:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2024-11-20 17:41:43,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-11-20 17:41:43,340 INFO L175 Difference]: Start difference. First operand has 85 places, 86 transitions, 790 flow. Second operand 7 states and 67 transitions. [2024-11-20 17:41:43,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 101 transitions, 1078 flow [2024-11-20 17:41:43,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 101 transitions, 1006 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-11-20 17:41:43,348 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 816 flow [2024-11-20 17:41:43,348 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} [2024-11-20 17:41:43,348 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 68 predicate places. [2024-11-20 17:41:43,348 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 816 flow [2024-11-20 17:41:43,349 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) [2024-11-20 17:41:43,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:43,349 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:43,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 17:41:43,549 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 [2024-11-20 17:41:43,549 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)] === [2024-11-20 17:41:43,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:43,550 INFO L85 PathProgramCache]: Analyzing trace with hash -526255113, now seen corresponding path program 7 times [2024-11-20 17:41:43,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:43,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309120136] [2024-11-20 17:41:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:43,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:43,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:43,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309120136] [2024-11-20 17:41:43,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309120136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:43,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563397296] [2024-11-20 17:41:43,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:41:43,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:43,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:43,623 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) [2024-11-20 17:41:43,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 17:41:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:43,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:43,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:43,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:43,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563397296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:43,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:43,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-20 17:41:43,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097529661] [2024-11-20 17:41:43,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:43,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:41:43,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:43,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:41:43,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:41:43,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:43,758 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) [2024-11-20 17:41:43,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:43,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:43,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:43,952 INFO L124 PetriNetUnfolderBase]: 210/369 cut-off events. [2024-11-20 17:41:43,952 INFO L125 PetriNetUnfolderBase]: For 2177/2177 co-relation queries the response was YES. [2024-11-20 17:41:43,954 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 1414 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. [2024-11-20 17:41:43,957 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 80 selfloop transitions, 50 changer transitions 0/131 dead transitions. [2024-11-20 17:41:43,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 131 transitions, 1433 flow [2024-11-20 17:41:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 17:41:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 17:41:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-11-20 17:41:43,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 17:41:43,958 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 816 flow. Second operand 10 states and 100 transitions. [2024-11-20 17:41:43,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 131 transitions, 1433 flow [2024-11-20 17:41:43,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 1366 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-20 17:41:43,968 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 1065 flow [2024-11-20 17:41:43,968 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} [2024-11-20 17:41:43,969 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 79 predicate places. [2024-11-20 17:41:43,969 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 1065 flow [2024-11-20 17:41:43,969 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) [2024-11-20 17:41:43,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:43,969 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:43,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-20 17:41:44,170 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 [2024-11-20 17:41:44,170 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)] === [2024-11-20 17:41:44,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash 37067966, now seen corresponding path program 8 times [2024-11-20 17:41:44,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:44,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609267374] [2024-11-20 17:41:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:44,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:44,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:44,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609267374] [2024-11-20 17:41:44,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609267374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:44,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578246636] [2024-11-20 17:41:44,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:41:44,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:44,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:44,236 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) [2024-11-20 17:41:44,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 17:41:44,298 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:44,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:44,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:44,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:44,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:44,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578246636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:44,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:44,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-20 17:41:44,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042603350] [2024-11-20 17:41:44,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:44,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:41:44,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:44,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:41:44,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:41:44,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:44,401 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) [2024-11-20 17:41:44,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:44,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:44,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:44,538 INFO L124 PetriNetUnfolderBase]: 211/376 cut-off events. [2024-11-20 17:41:44,538 INFO L125 PetriNetUnfolderBase]: For 3117/3117 co-relation queries the response was YES. [2024-11-20 17:41:44,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2353 conditions, 376 events. 211/376 cut-off events. For 3117/3117 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1487 event pairs, 33 based on Foata normal form. 3/379 useless extension candidates. Maximal degree in co-relation 2270. Up to 165 conditions per place. [2024-11-20 17:41:44,543 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 79 selfloop transitions, 34 changer transitions 9/123 dead transitions. [2024-11-20 17:41:44,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 123 transitions, 1508 flow [2024-11-20 17:41:44,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:41:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:41:44,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-11-20 17:41:44,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-20 17:41:44,544 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 1065 flow. Second operand 7 states and 72 transitions. [2024-11-20 17:41:44,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 123 transitions, 1508 flow [2024-11-20 17:41:44,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 123 transitions, 1421 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-11-20 17:41:44,558 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 1027 flow [2024-11-20 17:41:44,558 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} [2024-11-20 17:41:44,559 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 85 predicate places. [2024-11-20 17:41:44,559 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 1027 flow [2024-11-20 17:41:44,559 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) [2024-11-20 17:41:44,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:44,559 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:44,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-20 17:41:44,760 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 [2024-11-20 17:41:44,760 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)] === [2024-11-20 17:41:44,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:44,761 INFO L85 PathProgramCache]: Analyzing trace with hash 99726495, now seen corresponding path program 9 times [2024-11-20 17:41:44,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:44,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071565939] [2024-11-20 17:41:44,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:44,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:44,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:44,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071565939] [2024-11-20 17:41:44,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071565939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552046935] [2024-11-20 17:41:44,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:41:44,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:44,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:44,834 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) [2024-11-20 17:41:44,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 17:41:44,895 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 17:41:44,895 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:44,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:44,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:44,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:44,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552046935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:44,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:44,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-20 17:41:44,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856331933] [2024-11-20 17:41:44,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:44,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:41:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:44,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:41:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:41:44,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:44,986 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) [2024-11-20 17:41:44,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:44,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:44,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:45,260 INFO L124 PetriNetUnfolderBase]: 249/432 cut-off events. [2024-11-20 17:41:45,261 INFO L125 PetriNetUnfolderBase]: For 4351/4351 co-relation queries the response was YES. [2024-11-20 17:41:45,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 432 events. 249/432 cut-off events. For 4351/4351 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. [2024-11-20 17:41:45,265 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 81 selfloop transitions, 64 changer transitions 0/146 dead transitions. [2024-11-20 17:41:45,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 146 transitions, 1797 flow [2024-11-20 17:41:45,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 17:41:45,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-20 17:41:45,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 126 transitions. [2024-11-20 17:41:45,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-20 17:41:45,267 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 1027 flow. Second operand 14 states and 126 transitions. [2024-11-20 17:41:45,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 146 transitions, 1797 flow [2024-11-20 17:41:45,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 146 transitions, 1719 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-20 17:41:45,279 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 1483 flow [2024-11-20 17:41:45,279 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} [2024-11-20 17:41:45,279 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 97 predicate places. [2024-11-20 17:41:45,280 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 1483 flow [2024-11-20 17:41:45,280 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) [2024-11-20 17:41:45,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:45,280 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:45,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:45,481 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 [2024-11-20 17:41:45,481 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)] === [2024-11-20 17:41:45,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:45,481 INFO L85 PathProgramCache]: Analyzing trace with hash 555431037, now seen corresponding path program 10 times [2024-11-20 17:41:45,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:45,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857515642] [2024-11-20 17:41:45,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:45,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:45,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:45,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857515642] [2024-11-20 17:41:45,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857515642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:45,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224178805] [2024-11-20 17:41:45,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:41:45,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:45,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:45,548 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) [2024-11-20 17:41:45,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 17:41:45,606 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:41:45,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:45,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:45,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:45,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:45,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224178805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:45,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:45,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 17:41:45,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516910188] [2024-11-20 17:41:45,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:45,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:45,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:45,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:45,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:45,699 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:45,699 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) [2024-11-20 17:41:45,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:45,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:45,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:46,017 INFO L124 PetriNetUnfolderBase]: 300/515 cut-off events. [2024-11-20 17:41:46,017 INFO L125 PetriNetUnfolderBase]: For 8634/8634 co-relation queries the response was YES. [2024-11-20 17:41:46,020 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 2050 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. [2024-11-20 17:41:46,023 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 79 selfloop transitions, 94 changer transitions 0/174 dead transitions. [2024-11-20 17:41:46,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 174 transitions, 2495 flow [2024-11-20 17:41:46,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 17:41:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 17:41:46,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 143 transitions. [2024-11-20 17:41:46,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-11-20 17:41:46,025 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 1483 flow. Second operand 16 states and 143 transitions. [2024-11-20 17:41:46,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 174 transitions, 2495 flow [2024-11-20 17:41:46,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 174 transitions, 2211 flow, removed 133 selfloop flow, removed 3 redundant places. [2024-11-20 17:41:46,049 INFO L231 Difference]: Finished difference. Result has 139 places, 146 transitions, 1984 flow [2024-11-20 17:41:46,050 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} [2024-11-20 17:41:46,050 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 117 predicate places. [2024-11-20 17:41:46,050 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 146 transitions, 1984 flow [2024-11-20 17:41:46,050 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) [2024-11-20 17:41:46,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:46,050 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:46,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:46,251 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 [2024-11-20 17:41:46,251 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)] === [2024-11-20 17:41:46,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:46,252 INFO L85 PathProgramCache]: Analyzing trace with hash 963285089, now seen corresponding path program 11 times [2024-11-20 17:41:46,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:46,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609188365] [2024-11-20 17:41:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:46,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:46,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:46,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609188365] [2024-11-20 17:41:46,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609188365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:46,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916008599] [2024-11-20 17:41:46,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:41:46,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:46,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:46,346 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) [2024-11-20 17:41:46,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 17:41:46,407 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 17:41:46,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:46,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:46,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:46,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:46,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:46,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916008599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:46,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:46,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 17:41:46,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16608577] [2024-11-20 17:41:46,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:46,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:46,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:46,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:46,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:46,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:46,472 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) [2024-11-20 17:41:46,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:46,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:46,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:46,715 INFO L124 PetriNetUnfolderBase]: 300/519 cut-off events. [2024-11-20 17:41:46,716 INFO L125 PetriNetUnfolderBase]: For 8615/8615 co-relation queries the response was YES. [2024-11-20 17:41:46,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3932 conditions, 519 events. 300/519 cut-off events. For 8615/8615 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2117 event pairs, 42 based on Foata normal form. 4/523 useless extension candidates. Maximal degree in co-relation 3826. Up to 233 conditions per place. [2024-11-20 17:41:46,722 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 88 selfloop transitions, 79 changer transitions 2/170 dead transitions. [2024-11-20 17:41:46,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 170 transitions, 2569 flow [2024-11-20 17:41:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 17:41:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 17:41:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-11-20 17:41:46,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4346153846153846 [2024-11-20 17:41:46,724 INFO L175 Difference]: Start difference. First operand has 139 places, 146 transitions, 1984 flow. Second operand 13 states and 113 transitions. [2024-11-20 17:41:46,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 170 transitions, 2569 flow [2024-11-20 17:41:46,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 170 transitions, 2251 flow, removed 115 selfloop flow, removed 6 redundant places. [2024-11-20 17:41:46,755 INFO L231 Difference]: Finished difference. Result has 147 places, 146 transitions, 1836 flow [2024-11-20 17:41:46,755 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} [2024-11-20 17:41:46,756 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 125 predicate places. [2024-11-20 17:41:46,756 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 146 transitions, 1836 flow [2024-11-20 17:41:46,757 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) [2024-11-20 17:41:46,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:46,757 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:46,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-20 17:41:46,957 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 [2024-11-20 17:41:46,958 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)] === [2024-11-20 17:41:46,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:46,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1488894746, now seen corresponding path program 12 times [2024-11-20 17:41:46,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:46,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321470275] [2024-11-20 17:41:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:46,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:47,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:47,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321470275] [2024-11-20 17:41:47,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321470275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:47,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701849236] [2024-11-20 17:41:47,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:41:47,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:47,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:47,028 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) [2024-11-20 17:41:47,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 17:41:47,091 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-20 17:41:47,091 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:47,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:47,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:47,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:47,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701849236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:47,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:47,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 17:41:47,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558647347] [2024-11-20 17:41:47,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:47,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:47,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:47,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:47,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:47,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:47,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 146 transitions, 1836 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) [2024-11-20 17:41:47,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:47,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:47,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:47,535 INFO L124 PetriNetUnfolderBase]: 349/586 cut-off events. [2024-11-20 17:41:47,535 INFO L125 PetriNetUnfolderBase]: For 11161/11161 co-relation queries the response was YES. [2024-11-20 17:41:47,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4519 conditions, 586 events. 349/586 cut-off events. For 11161/11161 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2349 event pairs, 69 based on Foata normal form. 8/594 useless extension candidates. Maximal degree in co-relation 4446. Up to 402 conditions per place. [2024-11-20 17:41:47,545 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 127 selfloop transitions, 73 changer transitions 0/201 dead transitions. [2024-11-20 17:41:47,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 201 transitions, 3033 flow [2024-11-20 17:41:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 17:41:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-20 17:41:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2024-11-20 17:41:47,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4323529411764706 [2024-11-20 17:41:47,547 INFO L175 Difference]: Start difference. First operand has 147 places, 146 transitions, 1836 flow. Second operand 17 states and 147 transitions. [2024-11-20 17:41:47,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 201 transitions, 3033 flow [2024-11-20 17:41:47,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 201 transitions, 2820 flow, removed 30 selfloop flow, removed 12 redundant places. [2024-11-20 17:41:47,586 INFO L231 Difference]: Finished difference. Result has 154 places, 177 transitions, 2505 flow [2024-11-20 17:41:47,587 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=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2505, PETRI_PLACES=154, PETRI_TRANSITIONS=177} [2024-11-20 17:41:47,587 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 132 predicate places. [2024-11-20 17:41:47,587 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 177 transitions, 2505 flow [2024-11-20 17:41:47,587 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) [2024-11-20 17:41:47,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:47,588 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:47,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-20 17:41:47,788 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 [2024-11-20 17:41:47,789 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)] === [2024-11-20 17:41:47,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:47,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2129379204, now seen corresponding path program 13 times [2024-11-20 17:41:47,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:47,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80467062] [2024-11-20 17:41:47,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:47,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:47,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:47,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:47,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80467062] [2024-11-20 17:41:47,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80467062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:47,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015004399] [2024-11-20 17:41:47,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:41:47,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:47,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:47,864 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) [2024-11-20 17:41:47,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-20 17:41:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:47,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:47,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:47,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:47,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:48,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015004399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:48,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:48,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-20 17:41:48,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476448123] [2024-11-20 17:41:48,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:48,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:41:48,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:48,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:41:48,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:41:48,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:48,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 177 transitions, 2505 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) [2024-11-20 17:41:48,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:48,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:48,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:48,270 INFO L124 PetriNetUnfolderBase]: 354/603 cut-off events. [2024-11-20 17:41:48,270 INFO L125 PetriNetUnfolderBase]: For 10676/10676 co-relation queries the response was YES. [2024-11-20 17:41:48,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 603 events. 354/603 cut-off events. For 10676/10676 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2499 event pairs, 71 based on Foata normal form. 6/609 useless extension candidates. Maximal degree in co-relation 4553. Up to 420 conditions per place. [2024-11-20 17:41:48,278 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 141 selfloop transitions, 52 changer transitions 6/200 dead transitions. [2024-11-20 17:41:48,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 200 transitions, 3078 flow [2024-11-20 17:41:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:41:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:41:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-11-20 17:41:48,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-20 17:41:48,279 INFO L175 Difference]: Start difference. First operand has 154 places, 177 transitions, 2505 flow. Second operand 11 states and 99 transitions. [2024-11-20 17:41:48,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 200 transitions, 3078 flow [2024-11-20 17:41:48,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 200 transitions, 2583 flow, removed 189 selfloop flow, removed 7 redundant places. [2024-11-20 17:41:48,319 INFO L231 Difference]: Finished difference. Result has 159 places, 176 transitions, 2125 flow [2024-11-20 17:41:48,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2011, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2125, PETRI_PLACES=159, PETRI_TRANSITIONS=176} [2024-11-20 17:41:48,319 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 137 predicate places. [2024-11-20 17:41:48,320 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 176 transitions, 2125 flow [2024-11-20 17:41:48,320 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) [2024-11-20 17:41:48,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:48,320 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:48,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-20 17:41:48,520 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 [2024-11-20 17:41:48,521 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)] === [2024-11-20 17:41:48,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:48,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1516747420, now seen corresponding path program 14 times [2024-11-20 17:41:48,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:48,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647421564] [2024-11-20 17:41:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:48,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:48,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:48,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647421564] [2024-11-20 17:41:48,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647421564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:48,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191223422] [2024-11-20 17:41:48,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:41:48,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:48,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:48,591 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) [2024-11-20 17:41:48,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-20 17:41:48,642 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:48,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:48,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:48,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:48,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:48,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:48,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191223422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:48,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:48,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 17:41:48,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065650913] [2024-11-20 17:41:48,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:48,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:48,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:48,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:48,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:48,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:48,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 176 transitions, 2125 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) [2024-11-20 17:41:48,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:48,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:48,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:48,965 INFO L124 PetriNetUnfolderBase]: 341/581 cut-off events. [2024-11-20 17:41:48,966 INFO L125 PetriNetUnfolderBase]: For 8499/8499 co-relation queries the response was YES. [2024-11-20 17:41:48,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4105 conditions, 581 events. 341/581 cut-off events. For 8499/8499 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2356 event pairs, 65 based on Foata normal form. 9/590 useless extension candidates. Maximal degree in co-relation 3991. Up to 386 conditions per place. [2024-11-20 17:41:48,975 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 126 selfloop transitions, 64 changer transitions 4/195 dead transitions. [2024-11-20 17:41:48,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 195 transitions, 2639 flow [2024-11-20 17:41:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:41:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:41:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-11-20 17:41:48,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-11-20 17:41:48,977 INFO L175 Difference]: Start difference. First operand has 159 places, 176 transitions, 2125 flow. Second operand 12 states and 109 transitions. [2024-11-20 17:41:48,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 195 transitions, 2639 flow [2024-11-20 17:41:49,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 195 transitions, 2530 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-11-20 17:41:49,011 INFO L231 Difference]: Finished difference. Result has 161 places, 172 transitions, 2094 flow [2024-11-20 17:41:49,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2094, PETRI_PLACES=161, PETRI_TRANSITIONS=172} [2024-11-20 17:41:49,016 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 139 predicate places. [2024-11-20 17:41:49,016 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 172 transitions, 2094 flow [2024-11-20 17:41:49,017 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) [2024-11-20 17:41:49,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:49,017 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:49,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-20 17:41:49,217 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 [2024-11-20 17:41:49,217 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)] === [2024-11-20 17:41:49,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:49,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1057640249, now seen corresponding path program 15 times [2024-11-20 17:41:49,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:49,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731948892] [2024-11-20 17:41:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:49,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:49,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:49,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731948892] [2024-11-20 17:41:49,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731948892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:49,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252622254] [2024-11-20 17:41:49,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:41:49,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:49,301 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) [2024-11-20 17:41:49,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-20 17:41:49,355 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 17:41:49,355 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:49,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:49,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:49,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:49,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252622254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:49,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:49,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-20 17:41:49,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482138131] [2024-11-20 17:41:49,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:49,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:41:49,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:49,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:41:49,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:41:49,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:49,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 172 transitions, 2094 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) [2024-11-20 17:41:49,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:49,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:49,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:49,691 INFO L124 PetriNetUnfolderBase]: 390/650 cut-off events. [2024-11-20 17:41:49,691 INFO L125 PetriNetUnfolderBase]: For 11227/11227 co-relation queries the response was YES. [2024-11-20 17:41:49,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4800 conditions, 650 events. 390/650 cut-off events. For 11227/11227 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2697 event pairs, 41 based on Foata normal form. 8/658 useless extension candidates. Maximal degree in co-relation 4709. Up to 250 conditions per place. [2024-11-20 17:41:49,699 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 103 selfloop transitions, 115 changer transitions 5/224 dead transitions. [2024-11-20 17:41:49,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 224 transitions, 3240 flow [2024-11-20 17:41:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 17:41:49,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 17:41:49,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 134 transitions. [2024-11-20 17:41:49,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-11-20 17:41:49,701 INFO L175 Difference]: Start difference. First operand has 161 places, 172 transitions, 2094 flow. Second operand 16 states and 134 transitions. [2024-11-20 17:41:49,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 224 transitions, 3240 flow [2024-11-20 17:41:49,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 224 transitions, 3030 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-11-20 17:41:49,740 INFO L231 Difference]: Finished difference. Result has 168 places, 197 transitions, 2739 flow [2024-11-20 17:41:49,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2739, PETRI_PLACES=168, PETRI_TRANSITIONS=197} [2024-11-20 17:41:49,742 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 146 predicate places. [2024-11-20 17:41:49,742 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 197 transitions, 2739 flow [2024-11-20 17:41:49,743 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) [2024-11-20 17:41:49,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:49,743 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:49,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:49,943 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 [2024-11-20 17:41:49,943 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)] === [2024-11-20 17:41:49,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash -507151239, now seen corresponding path program 16 times [2024-11-20 17:41:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569654048] [2024-11-20 17:41:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:50,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:50,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:50,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569654048] [2024-11-20 17:41:50,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569654048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:50,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951926337] [2024-11-20 17:41:50,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:41:50,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:50,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:50,018 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) [2024-11-20 17:41:50,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-20 17:41:50,075 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:41:50,075 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:50,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:50,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:50,131 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:50,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951926337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:50,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:50,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-20 17:41:50,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935238229] [2024-11-20 17:41:50,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:50,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:41:50,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:50,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:41:50,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:41:50,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:50,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 197 transitions, 2739 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) [2024-11-20 17:41:50,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:50,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:50,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:50,421 INFO L124 PetriNetUnfolderBase]: 488/802 cut-off events. [2024-11-20 17:41:50,421 INFO L125 PetriNetUnfolderBase]: For 17665/17665 co-relation queries the response was YES. [2024-11-20 17:41:50,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6333 conditions, 802 events. 488/802 cut-off events. For 17665/17665 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3385 event pairs, 34 based on Foata normal form. 14/816 useless extension candidates. Maximal degree in co-relation 6251. Up to 254 conditions per place. [2024-11-20 17:41:50,433 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 102 selfloop transitions, 171 changer transitions 0/274 dead transitions. [2024-11-20 17:41:50,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 274 transitions, 4296 flow [2024-11-20 17:41:50,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 17:41:50,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-20 17:41:50,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 149 transitions. [2024-11-20 17:41:50,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43823529411764706 [2024-11-20 17:41:50,434 INFO L175 Difference]: Start difference. First operand has 168 places, 197 transitions, 2739 flow. Second operand 17 states and 149 transitions. [2024-11-20 17:41:50,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 274 transitions, 4296 flow [2024-11-20 17:41:50,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 274 transitions, 3887 flow, removed 157 selfloop flow, removed 8 redundant places. [2024-11-20 17:41:50,491 INFO L231 Difference]: Finished difference. Result has 178 places, 248 transitions, 3741 flow [2024-11-20 17:41:50,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3741, PETRI_PLACES=178, PETRI_TRANSITIONS=248} [2024-11-20 17:41:50,492 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 156 predicate places. [2024-11-20 17:41:50,492 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 248 transitions, 3741 flow [2024-11-20 17:41:50,492 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) [2024-11-20 17:41:50,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:50,493 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:50,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-20 17:41:50,693 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 [2024-11-20 17:41:50,694 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)] === [2024-11-20 17:41:50,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:50,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1889593665, now seen corresponding path program 17 times [2024-11-20 17:41:50,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:50,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227687055] [2024-11-20 17:41:50,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:50,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:50,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:50,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227687055] [2024-11-20 17:41:50,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227687055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:50,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272758209] [2024-11-20 17:41:50,772 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:41:50,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:50,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:50,774 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) [2024-11-20 17:41:50,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-20 17:41:50,832 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:50,832 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:50,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:50,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:50,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:50,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272758209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:50,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:50,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-20 17:41:50,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162015991] [2024-11-20 17:41:50,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:50,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:41:50,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:41:50,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:41:50,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:50,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 248 transitions, 3741 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) [2024-11-20 17:41:50,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:50,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:50,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:51,311 INFO L124 PetriNetUnfolderBase]: 585/967 cut-off events. [2024-11-20 17:41:51,311 INFO L125 PetriNetUnfolderBase]: For 17412/17412 co-relation queries the response was YES. [2024-11-20 17:41:51,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8019 conditions, 967 events. 585/967 cut-off events. For 17412/17412 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4329 event pairs, 37 based on Foata normal form. 8/975 useless extension candidates. Maximal degree in co-relation 7893. Up to 323 conditions per place. [2024-11-20 17:41:51,321 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 164 selfloop transitions, 169 changer transitions 0/334 dead transitions. [2024-11-20 17:41:51,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 334 transitions, 5456 flow [2024-11-20 17:41:51,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 17:41:51,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-20 17:41:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 191 transitions. [2024-11-20 17:41:51,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4152173913043478 [2024-11-20 17:41:51,322 INFO L175 Difference]: Start difference. First operand has 178 places, 248 transitions, 3741 flow. Second operand 23 states and 191 transitions. [2024-11-20 17:41:51,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 334 transitions, 5456 flow [2024-11-20 17:41:51,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 334 transitions, 5065 flow, removed 179 selfloop flow, removed 4 redundant places. [2024-11-20 17:41:51,376 INFO L231 Difference]: Finished difference. Result has 204 places, 298 transitions, 4699 flow [2024-11-20 17:41:51,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4699, PETRI_PLACES=204, PETRI_TRANSITIONS=298} [2024-11-20 17:41:51,376 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 182 predicate places. [2024-11-20 17:41:51,376 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 298 transitions, 4699 flow [2024-11-20 17:41:51,377 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) [2024-11-20 17:41:51,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:51,377 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:51,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:51,577 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 [2024-11-20 17:41:51,577 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)] === [2024-11-20 17:41:51,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1345896383, now seen corresponding path program 18 times [2024-11-20 17:41:51,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:51,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411020219] [2024-11-20 17:41:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:51,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:51,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:51,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411020219] [2024-11-20 17:41:51,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411020219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:51,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922854239] [2024-11-20 17:41:51,645 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:41:51,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:51,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:51,648 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) [2024-11-20 17:41:51,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-20 17:41:51,706 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-20 17:41:51,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:51,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:51,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:51,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:51,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922854239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:51,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:51,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-20 17:41:51,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190294851] [2024-11-20 17:41:51,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:51,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:41:51,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:51,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:41:51,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:41:51,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:51,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 298 transitions, 4699 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) [2024-11-20 17:41:51,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:51,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:51,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:52,189 INFO L124 PetriNetUnfolderBase]: 630/1038 cut-off events. [2024-11-20 17:41:52,189 INFO L125 PetriNetUnfolderBase]: For 23284/23284 co-relation queries the response was YES. [2024-11-20 17:41:52,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9112 conditions, 1038 events. 630/1038 cut-off events. For 23284/23284 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4718 event pairs, 144 based on Foata normal form. 24/1062 useless extension candidates. Maximal degree in co-relation 8973. Up to 890 conditions per place. [2024-11-20 17:41:52,200 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 291 selfloop transitions, 59 changer transitions 0/351 dead transitions. [2024-11-20 17:41:52,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 351 transitions, 6344 flow [2024-11-20 17:41:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-20 17:41:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-20 17:41:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 164 transitions. [2024-11-20 17:41:52,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-11-20 17:41:52,202 INFO L175 Difference]: Start difference. First operand has 204 places, 298 transitions, 4699 flow. Second operand 19 states and 164 transitions. [2024-11-20 17:41:52,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 351 transitions, 6344 flow [2024-11-20 17:41:52,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 351 transitions, 6107 flow, removed 76 selfloop flow, removed 10 redundant places. [2024-11-20 17:41:52,305 INFO L231 Difference]: Finished difference. Result has 224 places, 323 transitions, 5419 flow [2024-11-20 17:41:52,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4480, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5419, PETRI_PLACES=224, PETRI_TRANSITIONS=323} [2024-11-20 17:41:52,305 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 202 predicate places. [2024-11-20 17:41:52,306 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 323 transitions, 5419 flow [2024-11-20 17:41:52,306 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) [2024-11-20 17:41:52,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:52,306 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:52,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:52,506 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 [2024-11-20 17:41:52,507 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)] === [2024-11-20 17:41:52,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:52,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1274077767, now seen corresponding path program 19 times [2024-11-20 17:41:52,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:52,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243452268] [2024-11-20 17:41:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:52,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:52,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:52,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243452268] [2024-11-20 17:41:52,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243452268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:52,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899639530] [2024-11-20 17:41:52,586 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:41:52,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:52,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:52,589 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) [2024-11-20 17:41:52,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-20 17:41:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:52,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:52,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:52,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:52,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899639530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:52,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:52,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-20 17:41:52,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180932095] [2024-11-20 17:41:52,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:52,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:41:52,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:52,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:41:52,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:41:52,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:52,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 323 transitions, 5419 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) [2024-11-20 17:41:52,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:52,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:52,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:52,994 INFO L124 PetriNetUnfolderBase]: 639/1053 cut-off events. [2024-11-20 17:41:52,995 INFO L125 PetriNetUnfolderBase]: For 25030/25030 co-relation queries the response was YES. [2024-11-20 17:41:53,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9598 conditions, 1053 events. 639/1053 cut-off events. For 25030/25030 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4808 event pairs, 148 based on Foata normal form. 4/1057 useless extension candidates. Maximal degree in co-relation 9446. Up to 918 conditions per place. [2024-11-20 17:41:53,008 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 283 selfloop transitions, 56 changer transitions 2/342 dead transitions. [2024-11-20 17:41:53,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 342 transitions, 6487 flow [2024-11-20 17:41:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:41:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:41:53,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-11-20 17:41:53,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-11-20 17:41:53,036 INFO L175 Difference]: Start difference. First operand has 224 places, 323 transitions, 5419 flow. Second operand 11 states and 94 transitions. [2024-11-20 17:41:53,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 342 transitions, 6487 flow [2024-11-20 17:41:53,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 342 transitions, 5746 flow, removed 350 selfloop flow, removed 8 redundant places. [2024-11-20 17:41:53,139 INFO L231 Difference]: Finished difference. Result has 227 places, 326 transitions, 4963 flow [2024-11-20 17:41:53,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4773, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4963, PETRI_PLACES=227, PETRI_TRANSITIONS=326} [2024-11-20 17:41:53,139 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 205 predicate places. [2024-11-20 17:41:53,140 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 326 transitions, 4963 flow [2024-11-20 17:41:53,140 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) [2024-11-20 17:41:53,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:53,140 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:53,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:53,340 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 [2024-11-20 17:41:53,341 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)] === [2024-11-20 17:41:53,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:53,341 INFO L85 PathProgramCache]: Analyzing trace with hash -840836223, now seen corresponding path program 20 times [2024-11-20 17:41:53,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:53,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091797759] [2024-11-20 17:41:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:53,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:53,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:53,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091797759] [2024-11-20 17:41:53,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091797759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:53,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614258792] [2024-11-20 17:41:53,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:41:53,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:53,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:53,407 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) [2024-11-20 17:41:53,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-20 17:41:53,465 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:53,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:53,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:53,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:53,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:53,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614258792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:53,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:53,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-20 17:41:53,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265664585] [2024-11-20 17:41:53,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:53,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:41:53,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:53,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:41:53,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:41:53,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:53,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 326 transitions, 4963 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) [2024-11-20 17:41:53,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:53,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:53,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:53,944 INFO L124 PetriNetUnfolderBase]: 684/1120 cut-off events. [2024-11-20 17:41:53,944 INFO L125 PetriNetUnfolderBase]: For 30351/30351 co-relation queries the response was YES. [2024-11-20 17:41:53,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9858 conditions, 1120 events. 684/1120 cut-off events. For 30351/30351 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5173 event pairs, 144 based on Foata normal form. 10/1130 useless extension candidates. Maximal degree in co-relation 9707. Up to 923 conditions per place. [2024-11-20 17:41:53,956 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 288 selfloop transitions, 85 changer transitions 0/374 dead transitions. [2024-11-20 17:41:53,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 374 transitions, 6582 flow [2024-11-20 17:41:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 17:41:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 17:41:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 138 transitions. [2024-11-20 17:41:53,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-20 17:41:53,958 INFO L175 Difference]: Start difference. First operand has 227 places, 326 transitions, 4963 flow. Second operand 16 states and 138 transitions. [2024-11-20 17:41:53,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 374 transitions, 6582 flow [2024-11-20 17:41:54,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 374 transitions, 6473 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-20 17:41:54,092 INFO L231 Difference]: Finished difference. Result has 241 places, 351 transitions, 5764 flow [2024-11-20 17:41:54,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4854, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5764, PETRI_PLACES=241, PETRI_TRANSITIONS=351} [2024-11-20 17:41:54,095 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 219 predicate places. [2024-11-20 17:41:54,095 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 351 transitions, 5764 flow [2024-11-20 17:41:54,095 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) [2024-11-20 17:41:54,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:54,095 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:54,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:54,296 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 [2024-11-20 17:41:54,296 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)] === [2024-11-20 17:41:54,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1524064107, now seen corresponding path program 21 times [2024-11-20 17:41:54,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:54,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146074069] [2024-11-20 17:41:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:54,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:54,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:54,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146074069] [2024-11-20 17:41:54,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146074069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:54,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183207965] [2024-11-20 17:41:54,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:41:54,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:54,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:54,368 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) [2024-11-20 17:41:54,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-20 17:41:54,430 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 17:41:54,431 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:54,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:54,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:54,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:41:54,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183207965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:54,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:54,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-20 17:41:54,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317751558] [2024-11-20 17:41:54,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:54,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:41:54,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:54,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:41:54,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:41:54,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:54,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 351 transitions, 5764 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) [2024-11-20 17:41:54,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:54,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:54,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:54,811 INFO L124 PetriNetUnfolderBase]: 684/1124 cut-off events. [2024-11-20 17:41:54,811 INFO L125 PetriNetUnfolderBase]: For 31832/31832 co-relation queries the response was YES. [2024-11-20 17:41:54,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10220 conditions, 1124 events. 684/1124 cut-off events. For 31832/31832 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5226 event pairs, 152 based on Foata normal form. 4/1128 useless extension candidates. Maximal degree in co-relation 10063. Up to 954 conditions per place. [2024-11-20 17:41:54,825 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 290 selfloop transitions, 73 changer transitions 2/366 dead transitions. [2024-11-20 17:41:54,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 366 transitions, 6753 flow [2024-11-20 17:41:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:41:54,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:41:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-11-20 17:41:54,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-11-20 17:41:54,827 INFO L175 Difference]: Start difference. First operand has 241 places, 351 transitions, 5764 flow. Second operand 11 states and 95 transitions. [2024-11-20 17:41:54,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 366 transitions, 6753 flow [2024-11-20 17:41:54,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 366 transitions, 6274 flow, removed 214 selfloop flow, removed 10 redundant places. [2024-11-20 17:41:54,982 INFO L231 Difference]: Finished difference. Result has 243 places, 351 transitions, 5458 flow [2024-11-20 17:41:54,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5285, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5458, PETRI_PLACES=243, PETRI_TRANSITIONS=351} [2024-11-20 17:41:54,984 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 221 predicate places. [2024-11-20 17:41:54,984 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 351 transitions, 5458 flow [2024-11-20 17:41:54,984 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) [2024-11-20 17:41:54,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:54,984 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:54,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:55,185 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 [2024-11-20 17:41:55,185 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)] === [2024-11-20 17:41:55,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:55,186 INFO L85 PathProgramCache]: Analyzing trace with hash -18594597, now seen corresponding path program 22 times [2024-11-20 17:41:55,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:55,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453177223] [2024-11-20 17:41:55,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:55,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:55,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:55,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453177223] [2024-11-20 17:41:55,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453177223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:55,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143521906] [2024-11-20 17:41:55,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:41:55,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:55,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:55,252 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) [2024-11-20 17:41:55,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-20 17:41:55,313 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:41:55,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:55,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:55,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:55,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:55,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143521906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:55,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:55,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 17:41:55,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115039075] [2024-11-20 17:41:55,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:55,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:55,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:55,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:55,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:55,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:55,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 351 transitions, 5458 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) [2024-11-20 17:41:55,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:55,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:55,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:55,785 INFO L124 PetriNetUnfolderBase]: 718/1172 cut-off events. [2024-11-20 17:41:55,785 INFO L125 PetriNetUnfolderBase]: For 36572/36572 co-relation queries the response was YES. [2024-11-20 17:41:55,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10727 conditions, 1172 events. 718/1172 cut-off events. For 36572/36572 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5404 event pairs, 85 based on Foata normal form. 10/1182 useless extension candidates. Maximal degree in co-relation 10617. Up to 700 conditions per place. [2024-11-20 17:41:55,799 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 228 selfloop transitions, 167 changer transitions 0/396 dead transitions. [2024-11-20 17:41:55,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 396 transitions, 7190 flow [2024-11-20 17:41:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 17:41:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-20 17:41:55,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 149 transitions. [2024-11-20 17:41:55,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43823529411764706 [2024-11-20 17:41:55,801 INFO L175 Difference]: Start difference. First operand has 243 places, 351 transitions, 5458 flow. Second operand 17 states and 149 transitions. [2024-11-20 17:41:55,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 396 transitions, 7190 flow [2024-11-20 17:41:55,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 396 transitions, 7030 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-20 17:41:55,951 INFO L231 Difference]: Finished difference. Result has 254 places, 369 transitions, 6424 flow [2024-11-20 17:41:55,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5298, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6424, PETRI_PLACES=254, PETRI_TRANSITIONS=369} [2024-11-20 17:41:55,952 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 232 predicate places. [2024-11-20 17:41:55,952 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 369 transitions, 6424 flow [2024-11-20 17:41:55,952 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) [2024-11-20 17:41:55,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:55,952 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:55,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:56,153 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 [2024-11-20 17:41:56,153 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)] === [2024-11-20 17:41:56,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1624324261, now seen corresponding path program 23 times [2024-11-20 17:41:56,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:56,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98940841] [2024-11-20 17:41:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:56,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:56,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:56,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98940841] [2024-11-20 17:41:56,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98940841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:56,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780172851] [2024-11-20 17:41:56,222 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:41:56,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:56,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:56,224 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) [2024-11-20 17:41:56,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-20 17:41:56,280 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:56,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:56,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:56,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:56,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:56,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780172851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:56,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:56,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-20 17:41:56,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047775903] [2024-11-20 17:41:56,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:56,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:41:56,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:56,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:41:56,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:41:56,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:56,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 369 transitions, 6424 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) [2024-11-20 17:41:56,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:56,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:56,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:56,870 INFO L124 PetriNetUnfolderBase]: 751/1223 cut-off events. [2024-11-20 17:41:56,870 INFO L125 PetriNetUnfolderBase]: For 41497/41497 co-relation queries the response was YES. [2024-11-20 17:41:56,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11901 conditions, 1223 events. 751/1223 cut-off events. For 41497/41497 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5741 event pairs, 163 based on Foata normal form. 4/1227 useless extension candidates. Maximal degree in co-relation 11741. Up to 1040 conditions per place. [2024-11-20 17:41:56,885 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 320 selfloop transitions, 80 changer transitions 4/405 dead transitions. [2024-11-20 17:41:56,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 405 transitions, 7889 flow [2024-11-20 17:41:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 17:41:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-20 17:41:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 115 transitions. [2024-11-20 17:41:56,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-11-20 17:41:56,886 INFO L175 Difference]: Start difference. First operand has 254 places, 369 transitions, 6424 flow. Second operand 14 states and 115 transitions. [2024-11-20 17:41:56,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 405 transitions, 7889 flow [2024-11-20 17:41:57,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 405 transitions, 7373 flow, removed 227 selfloop flow, removed 12 redundant places. [2024-11-20 17:41:57,007 INFO L231 Difference]: Finished difference. Result has 260 places, 385 transitions, 6514 flow [2024-11-20 17:41:57,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5913, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6514, PETRI_PLACES=260, PETRI_TRANSITIONS=385} [2024-11-20 17:41:57,008 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 238 predicate places. [2024-11-20 17:41:57,008 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 385 transitions, 6514 flow [2024-11-20 17:41:57,008 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) [2024-11-20 17:41:57,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:57,008 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:57,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-20 17:41:57,209 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 [2024-11-20 17:41:57,209 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)] === [2024-11-20 17:41:57,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:57,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1446677544, now seen corresponding path program 24 times [2024-11-20 17:41:57,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:57,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910845016] [2024-11-20 17:41:57,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:57,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:57,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:57,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910845016] [2024-11-20 17:41:57,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910845016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:57,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259569371] [2024-11-20 17:41:57,285 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:41:57,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:57,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:57,287 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) [2024-11-20 17:41:57,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-20 17:41:57,337 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-20 17:41:57,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:57,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:57,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:57,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:57,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259569371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:57,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:57,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-20 17:41:57,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089627951] [2024-11-20 17:41:57,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:57,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:41:57,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:57,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:41:57,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:41:57,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:57,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 385 transitions, 6514 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) [2024-11-20 17:41:57,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:57,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:57,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:57,859 INFO L124 PetriNetUnfolderBase]: 831/1336 cut-off events. [2024-11-20 17:41:57,859 INFO L125 PetriNetUnfolderBase]: For 49930/49930 co-relation queries the response was YES. [2024-11-20 17:41:57,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13170 conditions, 1336 events. 831/1336 cut-off events. For 49930/49930 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6276 event pairs, 38 based on Foata normal form. 15/1351 useless extension candidates. Maximal degree in co-relation 13010. Up to 824 conditions per place. [2024-11-20 17:41:57,874 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 321 selfloop transitions, 139 changer transitions 5/466 dead transitions. [2024-11-20 17:41:57,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 466 transitions, 9083 flow [2024-11-20 17:41:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 17:41:57,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-20 17:41:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2024-11-20 17:41:57,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4323529411764706 [2024-11-20 17:41:57,876 INFO L175 Difference]: Start difference. First operand has 260 places, 385 transitions, 6514 flow. Second operand 17 states and 147 transitions. [2024-11-20 17:41:57,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 466 transitions, 9083 flow [2024-11-20 17:41:58,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 466 transitions, 8904 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-11-20 17:41:58,038 INFO L231 Difference]: Finished difference. Result has 272 places, 427 transitions, 7950 flow [2024-11-20 17:41:58,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=6343, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7950, PETRI_PLACES=272, PETRI_TRANSITIONS=427} [2024-11-20 17:41:58,038 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 250 predicate places. [2024-11-20 17:41:58,039 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 427 transitions, 7950 flow [2024-11-20 17:41:58,039 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) [2024-11-20 17:41:58,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:58,039 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:58,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:58,239 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 [2024-11-20 17:41:58,240 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)] === [2024-11-20 17:41:58,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:58,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1643507096, now seen corresponding path program 25 times [2024-11-20 17:41:58,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:58,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833975590] [2024-11-20 17:41:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:58,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:58,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833975590] [2024-11-20 17:41:58,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833975590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508190456] [2024-11-20 17:41:58,323 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:41:58,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:58,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:58,326 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) [2024-11-20 17:41:58,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-20 17:41:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:58,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:58,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:58,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:58,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508190456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:58,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:58,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-20 17:41:58,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010394729] [2024-11-20 17:41:58,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:58,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:41:58,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:58,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:41:58,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:41:58,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:58,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 427 transitions, 7950 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) [2024-11-20 17:41:58,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:58,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:58,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:59,009 INFO L124 PetriNetUnfolderBase]: 888/1422 cut-off events. [2024-11-20 17:41:59,009 INFO L125 PetriNetUnfolderBase]: For 60989/60989 co-relation queries the response was YES. [2024-11-20 17:41:59,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14950 conditions, 1422 events. 888/1422 cut-off events. For 60989/60989 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6744 event pairs, 37 based on Foata normal form. 36/1458 useless extension candidates. Maximal degree in co-relation 14696. Up to 966 conditions per place. [2024-11-20 17:41:59,023 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 352 selfloop transitions, 142 changer transitions 0/495 dead transitions. [2024-11-20 17:41:59,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 495 transitions, 10486 flow [2024-11-20 17:41:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 17:41:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-20 17:41:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 190 transitions. [2024-11-20 17:41:59,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2024-11-20 17:41:59,024 INFO L175 Difference]: Start difference. First operand has 272 places, 427 transitions, 7950 flow. Second operand 23 states and 190 transitions. [2024-11-20 17:41:59,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 495 transitions, 10486 flow [2024-11-20 17:41:59,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 495 transitions, 9152 flow, removed 601 selfloop flow, removed 5 redundant places. [2024-11-20 17:41:59,202 INFO L231 Difference]: Finished difference. Result has 297 places, 465 transitions, 8265 flow [2024-11-20 17:41:59,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7117, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=8265, PETRI_PLACES=297, PETRI_TRANSITIONS=465} [2024-11-20 17:41:59,203 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 275 predicate places. [2024-11-20 17:41:59,203 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 465 transitions, 8265 flow [2024-11-20 17:41:59,203 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) [2024-11-20 17:41:59,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:59,203 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:59,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-20 17:41:59,404 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 [2024-11-20 17:41:59,404 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)] === [2024-11-20 17:41:59,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash 571037951, now seen corresponding path program 26 times [2024-11-20 17:41:59,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:59,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068207375] [2024-11-20 17:41:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:59,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:59,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:59,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068207375] [2024-11-20 17:41:59,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068207375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:59,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481330335] [2024-11-20 17:41:59,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:41:59,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:59,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:59,468 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) [2024-11-20 17:41:59,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-20 17:41:59,524 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:59,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:59,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:59,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:59,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:59,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481330335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:59,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:59,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-20 17:41:59,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941211225] [2024-11-20 17:41:59,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:59,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:41:59,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:59,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:41:59,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:41:59,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:41:59,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 465 transitions, 8265 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) [2024-11-20 17:41:59,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:59,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:41:59,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:59,991 INFO L124 PetriNetUnfolderBase]: 890/1436 cut-off events. [2024-11-20 17:41:59,991 INFO L125 PetriNetUnfolderBase]: For 52317/52317 co-relation queries the response was YES. [2024-11-20 17:42:00,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14331 conditions, 1436 events. 890/1436 cut-off events. For 52317/52317 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6853 event pairs, 138 based on Foata normal form. 2/1438 useless extension candidates. Maximal degree in co-relation 14113. Up to 1025 conditions per place. [2024-11-20 17:42:00,015 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 376 selfloop transitions, 100 changer transitions 5/482 dead transitions. [2024-11-20 17:42:00,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 482 transitions, 9540 flow [2024-11-20 17:42:00,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:42:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:42:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-11-20 17:42:00,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-11-20 17:42:00,017 INFO L175 Difference]: Start difference. First operand has 297 places, 465 transitions, 8265 flow. Second operand 7 states and 66 transitions. [2024-11-20 17:42:00,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 482 transitions, 9540 flow [2024-11-20 17:42:00,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 482 transitions, 9106 flow, removed 191 selfloop flow, removed 7 redundant places. [2024-11-20 17:42:00,223 INFO L231 Difference]: Finished difference. Result has 299 places, 464 transitions, 8023 flow [2024-11-20 17:42:00,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7831, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8023, PETRI_PLACES=299, PETRI_TRANSITIONS=464} [2024-11-20 17:42:00,224 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 277 predicate places. [2024-11-20 17:42:00,224 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 464 transitions, 8023 flow [2024-11-20 17:42:00,224 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) [2024-11-20 17:42:00,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:00,224 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:00,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:00,425 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 [2024-11-20 17:42:00,425 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)] === [2024-11-20 17:42:00,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:00,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2135413233, now seen corresponding path program 27 times [2024-11-20 17:42:00,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:00,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983534090] [2024-11-20 17:42:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:00,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:00,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:00,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983534090] [2024-11-20 17:42:00,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983534090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:00,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478536012] [2024-11-20 17:42:00,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:42:00,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:00,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:00,492 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) [2024-11-20 17:42:00,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-20 17:42:00,539 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 17:42:00,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:00,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:42:00,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:00,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:00,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478536012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:00,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:00,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-20 17:42:00,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083968416] [2024-11-20 17:42:00,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:00,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:42:00,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:00,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:42:00,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:42:00,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:00,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 464 transitions, 8023 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) [2024-11-20 17:42:00,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:00,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:00,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:00,952 INFO L124 PetriNetUnfolderBase]: 883/1423 cut-off events. [2024-11-20 17:42:00,952 INFO L125 PetriNetUnfolderBase]: For 50714/50714 co-relation queries the response was YES. [2024-11-20 17:42:00,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13982 conditions, 1423 events. 883/1423 cut-off events. For 50714/50714 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6783 event pairs, 139 based on Foata normal form. 4/1427 useless extension candidates. Maximal degree in co-relation 13863. Up to 1031 conditions per place. [2024-11-20 17:42:00,968 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 360 selfloop transitions, 116 changer transitions 3/480 dead transitions. [2024-11-20 17:42:00,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 480 transitions, 9316 flow [2024-11-20 17:42:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:42:00,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:42:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 93 transitions. [2024-11-20 17:42:00,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-11-20 17:42:00,969 INFO L175 Difference]: Start difference. First operand has 299 places, 464 transitions, 8023 flow. Second operand 11 states and 93 transitions. [2024-11-20 17:42:00,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 480 transitions, 9316 flow [2024-11-20 17:42:01,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 480 transitions, 9112 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-20 17:42:01,197 INFO L231 Difference]: Finished difference. Result has 303 places, 462 transitions, 8053 flow [2024-11-20 17:42:01,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7807, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8053, PETRI_PLACES=303, PETRI_TRANSITIONS=462} [2024-11-20 17:42:01,198 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 281 predicate places. [2024-11-20 17:42:01,198 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 462 transitions, 8053 flow [2024-11-20 17:42:01,198 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) [2024-11-20 17:42:01,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:01,199 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:01,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:01,399 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 [2024-11-20 17:42:01,399 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)] === [2024-11-20 17:42:01,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1358263634, now seen corresponding path program 28 times [2024-11-20 17:42:01,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:01,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808222531] [2024-11-20 17:42:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:01,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:01,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808222531] [2024-11-20 17:42:01,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808222531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:01,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391510530] [2024-11-20 17:42:01,469 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:42:01,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:01,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:01,472 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) [2024-11-20 17:42:01,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-20 17:42:01,525 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:42:01,526 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:01,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:42:01,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:01,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:01,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391510530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:01,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:01,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-20 17:42:01,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123335493] [2024-11-20 17:42:01,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:01,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:42:01,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:01,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:42:01,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:42:01,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:01,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 462 transitions, 8053 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) [2024-11-20 17:42:01,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:01,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:01,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:02,085 INFO L124 PetriNetUnfolderBase]: 920/1482 cut-off events. [2024-11-20 17:42:02,086 INFO L125 PetriNetUnfolderBase]: For 53450/53450 co-relation queries the response was YES. [2024-11-20 17:42:02,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14503 conditions, 1482 events. 920/1482 cut-off events. For 53450/53450 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7097 event pairs, 44 based on Foata normal form. 4/1486 useless extension candidates. Maximal degree in co-relation 14385. Up to 1038 conditions per place. [2024-11-20 17:42:02,105 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 380 selfloop transitions, 125 changer transitions 0/506 dead transitions. [2024-11-20 17:42:02,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 506 transitions, 9634 flow [2024-11-20 17:42:02,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 17:42:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-20 17:42:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 115 transitions. [2024-11-20 17:42:02,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-11-20 17:42:02,107 INFO L175 Difference]: Start difference. First operand has 303 places, 462 transitions, 8053 flow. Second operand 14 states and 115 transitions. [2024-11-20 17:42:02,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 506 transitions, 9634 flow [2024-11-20 17:42:02,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 506 transitions, 9376 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-11-20 17:42:02,325 INFO L231 Difference]: Finished difference. Result has 311 places, 484 transitions, 8362 flow [2024-11-20 17:42:02,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7769, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8362, PETRI_PLACES=311, PETRI_TRANSITIONS=484} [2024-11-20 17:42:02,326 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 289 predicate places. [2024-11-20 17:42:02,326 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 484 transitions, 8362 flow [2024-11-20 17:42:02,326 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) [2024-11-20 17:42:02,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:02,326 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:02,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-20 17:42:02,527 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 [2024-11-20 17:42:02,527 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)] === [2024-11-20 17:42:02,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:02,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1613823300, now seen corresponding path program 29 times [2024-11-20 17:42:02,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:02,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851674755] [2024-11-20 17:42:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:02,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:02,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:02,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851674755] [2024-11-20 17:42:02,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851674755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:02,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314153148] [2024-11-20 17:42:02,601 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:42:02,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:02,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:02,604 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) [2024-11-20 17:42:02,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-20 17:42:02,664 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 17:42:02,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:02,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:42:02,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:02,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:02,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314153148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:02,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:02,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-20 17:42:02,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820429786] [2024-11-20 17:42:02,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:02,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:42:02,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:02,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:42:02,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:42:02,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:02,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 484 transitions, 8362 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) [2024-11-20 17:42:02,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:02,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:02,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:03,161 INFO L124 PetriNetUnfolderBase]: 921/1489 cut-off events. [2024-11-20 17:42:03,161 INFO L125 PetriNetUnfolderBase]: For 53457/53457 co-relation queries the response was YES. [2024-11-20 17:42:03,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14610 conditions, 1489 events. 921/1489 cut-off events. For 53457/53457 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7224 event pairs, 53 based on Foata normal form. 6/1495 useless extension candidates. Maximal degree in co-relation 14486. Up to 962 conditions per place. [2024-11-20 17:42:03,177 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 367 selfloop transitions, 138 changer transitions 3/509 dead transitions. [2024-11-20 17:42:03,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 509 transitions, 9763 flow [2024-11-20 17:42:03,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 17:42:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-20 17:42:03,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 121 transitions. [2024-11-20 17:42:03,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-11-20 17:42:03,178 INFO L175 Difference]: Start difference. First operand has 311 places, 484 transitions, 8362 flow. Second operand 14 states and 121 transitions. [2024-11-20 17:42:03,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 509 transitions, 9763 flow [2024-11-20 17:42:03,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 509 transitions, 9611 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-11-20 17:42:03,373 INFO L231 Difference]: Finished difference. Result has 321 places, 484 transitions, 8474 flow [2024-11-20 17:42:03,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8211, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8474, PETRI_PLACES=321, PETRI_TRANSITIONS=484} [2024-11-20 17:42:03,374 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 299 predicate places. [2024-11-20 17:42:03,374 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 484 transitions, 8474 flow [2024-11-20 17:42:03,374 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) [2024-11-20 17:42:03,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:03,374 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:03,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-20 17:42:03,575 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 [2024-11-20 17:42:03,575 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)] === [2024-11-20 17:42:03,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:03,575 INFO L85 PathProgramCache]: Analyzing trace with hash -438573290, now seen corresponding path program 30 times [2024-11-20 17:42:03,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:03,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437136764] [2024-11-20 17:42:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:03,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:03,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:03,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437136764] [2024-11-20 17:42:03,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437136764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:03,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132901247] [2024-11-20 17:42:03,631 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:42:03,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:03,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:03,632 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) [2024-11-20 17:42:03,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-20 17:42:03,679 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-20 17:42:03,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:03,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:42:03,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:03,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:03,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132901247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:03,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:03,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-20 17:42:03,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026221209] [2024-11-20 17:42:03,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:03,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:42:03,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:03,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:42:03,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:42:03,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:03,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 484 transitions, 8474 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) [2024-11-20 17:42:03,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:03,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:03,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:04,151 INFO L124 PetriNetUnfolderBase]: 966/1562 cut-off events. [2024-11-20 17:42:04,151 INFO L125 PetriNetUnfolderBase]: For 56520/56520 co-relation queries the response was YES. [2024-11-20 17:42:04,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15397 conditions, 1562 events. 966/1562 cut-off events. For 56520/56520 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7638 event pairs, 15 based on Foata normal form. 6/1568 useless extension candidates. Maximal degree in co-relation 15271. Up to 788 conditions per place. [2024-11-20 17:42:04,167 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 335 selfloop transitions, 199 changer transitions 0/535 dead transitions. [2024-11-20 17:42:04,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 535 transitions, 10451 flow [2024-11-20 17:42:04,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 17:42:04,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 17:42:04,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-11-20 17:42:04,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.465 [2024-11-20 17:42:04,168 INFO L175 Difference]: Start difference. First operand has 321 places, 484 transitions, 8474 flow. Second operand 10 states and 93 transitions. [2024-11-20 17:42:04,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 535 transitions, 10451 flow [2024-11-20 17:42:04,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 535 transitions, 10295 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-11-20 17:42:04,383 INFO L231 Difference]: Finished difference. Result has 324 places, 507 transitions, 9191 flow [2024-11-20 17:42:04,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8290, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9191, PETRI_PLACES=324, PETRI_TRANSITIONS=507} [2024-11-20 17:42:04,384 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 302 predicate places. [2024-11-20 17:42:04,384 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 507 transitions, 9191 flow [2024-11-20 17:42:04,384 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) [2024-11-20 17:42:04,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:04,384 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:04,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-20 17:42:04,585 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 [2024-11-20 17:42:04,585 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)] === [2024-11-20 17:42:04,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1369561908, now seen corresponding path program 31 times [2024-11-20 17:42:04,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:04,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992293177] [2024-11-20 17:42:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:04,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:04,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:04,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992293177] [2024-11-20 17:42:04,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992293177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:04,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83346537] [2024-11-20 17:42:04,647 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:42:04,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:04,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:04,649 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) [2024-11-20 17:42:04,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-20 17:42:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:04,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:42:04,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:04,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:04,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:04,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83346537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:04,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:04,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 17:42:04,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349894846] [2024-11-20 17:42:04,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:04,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:42:04,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:04,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:42:04,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:42:04,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:04,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 507 transitions, 9191 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) [2024-11-20 17:42:04,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:04,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:04,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:05,332 INFO L124 PetriNetUnfolderBase]: 989/1611 cut-off events. [2024-11-20 17:42:05,333 INFO L125 PetriNetUnfolderBase]: For 61481/61481 co-relation queries the response was YES. [2024-11-20 17:42:05,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16170 conditions, 1611 events. 989/1611 cut-off events. For 61481/61481 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8091 event pairs, 45 based on Foata normal form. 12/1623 useless extension candidates. Maximal degree in co-relation 16042. Up to 942 conditions per place. [2024-11-20 17:42:05,351 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 347 selfloop transitions, 201 changer transitions 0/549 dead transitions. [2024-11-20 17:42:05,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 549 transitions, 10952 flow [2024-11-20 17:42:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 17:42:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 17:42:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 137 transitions. [2024-11-20 17:42:05,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-11-20 17:42:05,353 INFO L175 Difference]: Start difference. First operand has 324 places, 507 transitions, 9191 flow. Second operand 16 states and 137 transitions. [2024-11-20 17:42:05,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 549 transitions, 10952 flow [2024-11-20 17:42:05,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 549 transitions, 10635 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-11-20 17:42:05,565 INFO L231 Difference]: Finished difference. Result has 335 places, 523 transitions, 9755 flow [2024-11-20 17:42:05,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8835, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9755, PETRI_PLACES=335, PETRI_TRANSITIONS=523} [2024-11-20 17:42:05,566 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 313 predicate places. [2024-11-20 17:42:05,566 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 523 transitions, 9755 flow [2024-11-20 17:42:05,566 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) [2024-11-20 17:42:05,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:05,566 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:05,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:05,766 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 [2024-11-20 17:42:05,767 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)] === [2024-11-20 17:42:05,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:05,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1787176280, now seen corresponding path program 32 times [2024-11-20 17:42:05,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:05,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786405581] [2024-11-20 17:42:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:05,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:05,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:05,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786405581] [2024-11-20 17:42:05,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786405581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:05,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258771868] [2024-11-20 17:42:05,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:42:05,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:05,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:05,850 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) [2024-11-20 17:42:05,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-20 17:42:05,900 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:42:05,900 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:05,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:42:05,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:05,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:05,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258771868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:05,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:05,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-20 17:42:05,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694269716] [2024-11-20 17:42:05,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:05,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:42:05,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:42:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:42:05,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:05,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 523 transitions, 9755 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) [2024-11-20 17:42:05,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:05,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:05,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:06,527 INFO L124 PetriNetUnfolderBase]: 1038/1683 cut-off events. [2024-11-20 17:42:06,527 INFO L125 PetriNetUnfolderBase]: For 73126/73126 co-relation queries the response was YES. [2024-11-20 17:42:06,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17828 conditions, 1683 events. 1038/1683 cut-off events. For 73126/73126 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8416 event pairs, 50 based on Foata normal form. 12/1695 useless extension candidates. Maximal degree in co-relation 17700. Up to 896 conditions per place. [2024-11-20 17:42:06,551 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 326 selfloop transitions, 252 changer transitions 0/579 dead transitions. [2024-11-20 17:42:06,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 579 transitions, 12326 flow [2024-11-20 17:42:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 17:42:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-20 17:42:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 146 transitions. [2024-11-20 17:42:06,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4294117647058823 [2024-11-20 17:42:06,553 INFO L175 Difference]: Start difference. First operand has 335 places, 523 transitions, 9755 flow. Second operand 17 states and 146 transitions. [2024-11-20 17:42:06,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 579 transitions, 12326 flow [2024-11-20 17:42:06,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 579 transitions, 11784 flow, removed 103 selfloop flow, removed 16 redundant places. [2024-11-20 17:42:06,796 INFO L231 Difference]: Finished difference. Result has 340 places, 557 transitions, 11202 flow [2024-11-20 17:42:06,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=9197, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=11202, PETRI_PLACES=340, PETRI_TRANSITIONS=557} [2024-11-20 17:42:06,797 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 318 predicate places. [2024-11-20 17:42:06,797 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 557 transitions, 11202 flow [2024-11-20 17:42:06,797 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) [2024-11-20 17:42:06,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:06,797 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:06,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-20 17:42:06,997 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 [2024-11-20 17:42:06,998 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)] === [2024-11-20 17:42:06,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2145914194, now seen corresponding path program 33 times [2024-11-20 17:42:06,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:06,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809535728] [2024-11-20 17:42:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:06,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:07,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:07,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809535728] [2024-11-20 17:42:07,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809535728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:07,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174720212] [2024-11-20 17:42:07,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:42:07,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:07,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:07,063 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) [2024-11-20 17:42:07,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-20 17:42:07,130 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-20 17:42:07,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:07,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:42:07,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:07,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:07,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174720212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:07,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:07,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 17:42:07,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818548878] [2024-11-20 17:42:07,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:07,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:42:07,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:07,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:42:07,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:42:07,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:07,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 557 transitions, 11202 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) [2024-11-20 17:42:07,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:07,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:07,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:07,707 INFO L124 PetriNetUnfolderBase]: 1036/1675 cut-off events. [2024-11-20 17:42:07,707 INFO L125 PetriNetUnfolderBase]: For 75427/75427 co-relation queries the response was YES. [2024-11-20 17:42:07,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18147 conditions, 1675 events. 1036/1675 cut-off events. For 75427/75427 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8458 event pairs, 73 based on Foata normal form. 6/1681 useless extension candidates. Maximal degree in co-relation 18020. Up to 962 conditions per place. [2024-11-20 17:42:07,725 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 394 selfloop transitions, 179 changer transitions 3/577 dead transitions. [2024-11-20 17:42:07,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 577 transitions, 12632 flow [2024-11-20 17:42:07,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 17:42:07,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 17:42:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-11-20 17:42:07,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4346153846153846 [2024-11-20 17:42:07,727 INFO L175 Difference]: Start difference. First operand has 340 places, 557 transitions, 11202 flow. Second operand 13 states and 113 transitions. [2024-11-20 17:42:07,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 577 transitions, 12632 flow [2024-11-20 17:42:07,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 577 transitions, 11849 flow, removed 366 selfloop flow, removed 7 redundant places. [2024-11-20 17:42:07,998 INFO L231 Difference]: Finished difference. Result has 345 places, 555 transitions, 10791 flow [2024-11-20 17:42:07,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=10435, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10791, PETRI_PLACES=345, PETRI_TRANSITIONS=555} [2024-11-20 17:42:07,999 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 323 predicate places. [2024-11-20 17:42:07,999 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 555 transitions, 10791 flow [2024-11-20 17:42:07,999 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) [2024-11-20 17:42:07,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:07,999 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:08,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:08,200 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 [2024-11-20 17:42:08,200 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)] === [2024-11-20 17:42:08,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash -936318785, now seen corresponding path program 34 times [2024-11-20 17:42:08,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:08,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502394739] [2024-11-20 17:42:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:08,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:08,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:08,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502394739] [2024-11-20 17:42:08,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502394739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:08,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159209137] [2024-11-20 17:42:08,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:42:08,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:08,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:08,256 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) [2024-11-20 17:42:08,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-20 17:42:08,303 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:42:08,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:08,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:42:08,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:08,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:08,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159209137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:08,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:08,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 17:42:08,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621802471] [2024-11-20 17:42:08,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:08,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:42:08,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:08,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:42:08,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:42:08,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:08,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 555 transitions, 10791 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) [2024-11-20 17:42:08,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:08,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:08,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:08,830 INFO L124 PetriNetUnfolderBase]: 1034/1664 cut-off events. [2024-11-20 17:42:08,830 INFO L125 PetriNetUnfolderBase]: For 56393/56393 co-relation queries the response was YES. [2024-11-20 17:42:08,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17117 conditions, 1664 events. 1034/1664 cut-off events. For 56393/56393 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8302 event pairs, 163 based on Foata normal form. 4/1668 useless extension candidates. Maximal degree in co-relation 16990. Up to 1141 conditions per place. [2024-11-20 17:42:08,846 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 376 selfloop transitions, 193 changer transitions 2/572 dead transitions. [2024-11-20 17:42:08,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 572 transitions, 12205 flow [2024-11-20 17:42:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:42:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:42:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2024-11-20 17:42:08,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-20 17:42:08,847 INFO L175 Difference]: Start difference. First operand has 345 places, 555 transitions, 10791 flow. Second operand 12 states and 104 transitions. [2024-11-20 17:42:08,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 572 transitions, 12205 flow [2024-11-20 17:42:09,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 572 transitions, 11815 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-11-20 17:42:09,108 INFO L231 Difference]: Finished difference. Result has 340 places, 553 transitions, 10815 flow [2024-11-20 17:42:09,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=10381, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10815, PETRI_PLACES=340, PETRI_TRANSITIONS=553} [2024-11-20 17:42:09,109 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 318 predicate places. [2024-11-20 17:42:09,110 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 553 transitions, 10815 flow [2024-11-20 17:42:09,110 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) [2024-11-20 17:42:09,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:09,110 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:09,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:09,310 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 [2024-11-20 17:42:09,311 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)] === [2024-11-20 17:42:09,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash -701783739, now seen corresponding path program 35 times [2024-11-20 17:42:09,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:09,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584701886] [2024-11-20 17:42:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:09,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:09,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:09,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584701886] [2024-11-20 17:42:09,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584701886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:09,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235309139] [2024-11-20 17:42:09,533 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:42:09,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:09,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:09,536 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) [2024-11-20 17:42:09,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-20 17:42:09,597 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 17:42:09,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:09,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:09,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:09,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:09,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:09,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235309139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:09,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:09,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-20 17:42:09,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382427225] [2024-11-20 17:42:09,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:09,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 17:42:09,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:09,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 17:42:09,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-20 17:42:09,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:09,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 553 transitions, 10815 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) [2024-11-20 17:42:09,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:09,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:09,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:10,563 INFO L124 PetriNetUnfolderBase]: 1201/1992 cut-off events. [2024-11-20 17:42:10,563 INFO L125 PetriNetUnfolderBase]: For 65476/65476 co-relation queries the response was YES. [2024-11-20 17:42:10,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20400 conditions, 1992 events. 1201/1992 cut-off events. For 65476/65476 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10689 event pairs, 26 based on Foata normal form. 2/1994 useless extension candidates. Maximal degree in co-relation 20274. Up to 1548 conditions per place. [2024-11-20 17:42:10,586 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 560 selfloop transitions, 107 changer transitions 12/680 dead transitions. [2024-11-20 17:42:10,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 680 transitions, 14313 flow [2024-11-20 17:42:10,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:42:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:42:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-11-20 17:42:10,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-20 17:42:10,588 INFO L175 Difference]: Start difference. First operand has 340 places, 553 transitions, 10815 flow. Second operand 11 states and 121 transitions. [2024-11-20 17:42:10,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 680 transitions, 14313 flow [2024-11-20 17:42:10,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 680 transitions, 13841 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-11-20 17:42:10,906 INFO L231 Difference]: Finished difference. Result has 347 places, 611 transitions, 12023 flow [2024-11-20 17:42:10,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=10409, PETRI_DIFFERENCE_MINUEND_PLACES=328, 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=12023, PETRI_PLACES=347, PETRI_TRANSITIONS=611} [2024-11-20 17:42:10,908 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 325 predicate places. [2024-11-20 17:42:10,908 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 611 transitions, 12023 flow [2024-11-20 17:42:10,908 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) [2024-11-20 17:42:10,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:10,908 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:10,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:11,112 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 [2024-11-20 17:42:11,113 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)] === [2024-11-20 17:42:11,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:11,113 INFO L85 PathProgramCache]: Analyzing trace with hash 416677767, now seen corresponding path program 36 times [2024-11-20 17:42:11,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:11,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411047428] [2024-11-20 17:42:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:11,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:11,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:11,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411047428] [2024-11-20 17:42:11,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411047428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:11,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045693653] [2024-11-20 17:42:11,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:42:11,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:11,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:11,338 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) [2024-11-20 17:42:11,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-20 17:42:11,400 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-20 17:42:11,400 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:11,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:11,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:11,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:11,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045693653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:11,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:11,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-20 17:42:11,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368000911] [2024-11-20 17:42:11,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:11,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:42:11,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:11,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:42:11,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:42:11,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:11,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 611 transitions, 12023 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) [2024-11-20 17:42:11,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:11,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:11,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:12,718 INFO L124 PetriNetUnfolderBase]: 1206/2009 cut-off events. [2024-11-20 17:42:12,718 INFO L125 PetriNetUnfolderBase]: For 68120/68120 co-relation queries the response was YES. [2024-11-20 17:42:12,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20859 conditions, 2009 events. 1206/2009 cut-off events. For 68120/68120 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 10888 event pairs, 26 based on Foata normal form. 2/2011 useless extension candidates. Maximal degree in co-relation 20724. Up to 1686 conditions per place. [2024-11-20 17:42:12,744 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 557 selfloop transitions, 93 changer transitions 13/664 dead transitions. [2024-11-20 17:42:12,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 664 transitions, 14032 flow [2024-11-20 17:42:12,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:42:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:42:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-11-20 17:42:12,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-20 17:42:12,746 INFO L175 Difference]: Start difference. First operand has 347 places, 611 transitions, 12023 flow. Second operand 12 states and 118 transitions. [2024-11-20 17:42:12,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 664 transitions, 14032 flow [2024-11-20 17:42:13,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 664 transitions, 13712 flow, removed 159 selfloop flow, removed 3 redundant places. [2024-11-20 17:42:13,074 INFO L231 Difference]: Finished difference. Result has 359 places, 623 transitions, 12308 flow [2024-11-20 17:42:13,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=11731, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12308, PETRI_PLACES=359, PETRI_TRANSITIONS=623} [2024-11-20 17:42:13,075 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 337 predicate places. [2024-11-20 17:42:13,075 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 623 transitions, 12308 flow [2024-11-20 17:42:13,075 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) [2024-11-20 17:42:13,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:13,076 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:13,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:13,276 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 [2024-11-20 17:42:13,276 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)] === [2024-11-20 17:42:13,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:13,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1032936729, now seen corresponding path program 37 times [2024-11-20 17:42:13,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:13,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146089493] [2024-11-20 17:42:13,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:13,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:13,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:13,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146089493] [2024-11-20 17:42:13,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146089493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:13,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190285738] [2024-11-20 17:42:13,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:42:13,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:13,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:13,481 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) [2024-11-20 17:42:13,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-20 17:42:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:13,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:13,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:13,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:13,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190285738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:13,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:13,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-20 17:42:13,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332735092] [2024-11-20 17:42:13,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:13,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 17:42:13,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:13,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 17:42:13,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-20 17:42:13,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:13,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 623 transitions, 12308 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) [2024-11-20 17:42:13,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:13,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:13,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:14,628 INFO L124 PetriNetUnfolderBase]: 1192/1976 cut-off events. [2024-11-20 17:42:14,629 INFO L125 PetriNetUnfolderBase]: For 62343/62343 co-relation queries the response was YES. [2024-11-20 17:42:14,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20364 conditions, 1976 events. 1192/1976 cut-off events. For 62343/62343 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10586 event pairs, 25 based on Foata normal form. 1/1977 useless extension candidates. Maximal degree in co-relation 20225. Up to 1612 conditions per place. [2024-11-20 17:42:14,659 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 549 selfloop transitions, 111 changer transitions 4/665 dead transitions. [2024-11-20 17:42:14,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 665 transitions, 14099 flow [2024-11-20 17:42:14,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:42:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:42:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-11-20 17:42:14,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-11-20 17:42:14,661 INFO L175 Difference]: Start difference. First operand has 359 places, 623 transitions, 12308 flow. Second operand 11 states and 112 transitions. [2024-11-20 17:42:14,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 665 transitions, 14099 flow [2024-11-20 17:42:14,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 665 transitions, 13781 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-11-20 17:42:14,995 INFO L231 Difference]: Finished difference. Result has 364 places, 630 transitions, 12449 flow [2024-11-20 17:42:14,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12002, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12449, PETRI_PLACES=364, PETRI_TRANSITIONS=630} [2024-11-20 17:42:14,996 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 342 predicate places. [2024-11-20 17:42:14,996 INFO L471 AbstractCegarLoop]: Abstraction has has 364 places, 630 transitions, 12449 flow [2024-11-20 17:42:14,997 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) [2024-11-20 17:42:14,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:14,997 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:15,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-20 17:42:15,197 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 [2024-11-20 17:42:15,197 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)] === [2024-11-20 17:42:15,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:15,198 INFO L85 PathProgramCache]: Analyzing trace with hash 112693913, now seen corresponding path program 38 times [2024-11-20 17:42:15,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:15,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935401358] [2024-11-20 17:42:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:15,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:15,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:15,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935401358] [2024-11-20 17:42:15,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935401358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:15,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276514187] [2024-11-20 17:42:15,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:42:15,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:15,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:15,396 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) [2024-11-20 17:42:15,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-20 17:42:15,458 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:42:15,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:15,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:15,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:15,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:15,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276514187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:15,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:15,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-20 17:42:15,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922661340] [2024-11-20 17:42:15,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:15,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 17:42:15,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 17:42:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-20 17:42:15,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:15,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 630 transitions, 12449 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) [2024-11-20 17:42:15,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:15,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:15,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:16,476 INFO L124 PetriNetUnfolderBase]: 1190/1966 cut-off events. [2024-11-20 17:42:16,476 INFO L125 PetriNetUnfolderBase]: For 63152/63152 co-relation queries the response was YES. [2024-11-20 17:42:16,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20105 conditions, 1966 events. 1190/1966 cut-off events. For 63152/63152 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10489 event pairs, 24 based on Foata normal form. 2/1968 useless extension candidates. Maximal degree in co-relation 19966. Up to 1551 conditions per place. [2024-11-20 17:42:16,504 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 541 selfloop transitions, 109 changer transitions 13/664 dead transitions. [2024-11-20 17:42:16,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 664 transitions, 14093 flow [2024-11-20 17:42:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:42:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:42:16,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-11-20 17:42:16,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 17:42:16,505 INFO L175 Difference]: Start difference. First operand has 364 places, 630 transitions, 12449 flow. Second operand 11 states and 110 transitions. [2024-11-20 17:42:16,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 664 transitions, 14093 flow [2024-11-20 17:42:16,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 664 transitions, 13811 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-11-20 17:42:16,821 INFO L231 Difference]: Finished difference. Result has 367 places, 628 transitions, 12393 flow [2024-11-20 17:42:16,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12171, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12393, PETRI_PLACES=367, PETRI_TRANSITIONS=628} [2024-11-20 17:42:16,822 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 345 predicate places. [2024-11-20 17:42:16,822 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 628 transitions, 12393 flow [2024-11-20 17:42:16,822 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) [2024-11-20 17:42:16,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:16,822 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:16,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-20 17:42:17,026 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 [2024-11-20 17:42:17,027 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)] === [2024-11-20 17:42:17,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash 571292345, now seen corresponding path program 39 times [2024-11-20 17:42:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:17,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662182018] [2024-11-20 17:42:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:17,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:17,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:17,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662182018] [2024-11-20 17:42:17,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662182018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:17,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175537537] [2024-11-20 17:42:17,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:42:17,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:17,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:17,231 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) [2024-11-20 17:42:17,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-20 17:42:17,292 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-20 17:42:17,293 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:17,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:17,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:17,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:17,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175537537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:17,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:17,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-20 17:42:17,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685648474] [2024-11-20 17:42:17,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:17,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 17:42:17,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:17,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 17:42:17,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-20 17:42:17,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:17,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 628 transitions, 12393 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) [2024-11-20 17:42:17,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:17,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:17,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:18,225 INFO L124 PetriNetUnfolderBase]: 1247/2070 cut-off events. [2024-11-20 17:42:18,226 INFO L125 PetriNetUnfolderBase]: For 68740/68740 co-relation queries the response was YES. [2024-11-20 17:42:18,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21144 conditions, 2070 events. 1247/2070 cut-off events. For 68740/68740 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11238 event pairs, 32 based on Foata normal form. 1/2071 useless extension candidates. Maximal degree in co-relation 21004. Up to 1824 conditions per place. [2024-11-20 17:42:18,253 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 598 selfloop transitions, 86 changer transitions 6/691 dead transitions. [2024-11-20 17:42:18,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 691 transitions, 14784 flow [2024-11-20 17:42:18,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 17:42:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 17:42:18,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-11-20 17:42:18,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-20 17:42:18,254 INFO L175 Difference]: Start difference. First operand has 367 places, 628 transitions, 12393 flow. Second operand 8 states and 88 transitions. [2024-11-20 17:42:18,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 691 transitions, 14784 flow [2024-11-20 17:42:18,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 691 transitions, 14431 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-11-20 17:42:18,733 INFO L231 Difference]: Finished difference. Result has 365 places, 656 transitions, 12888 flow [2024-11-20 17:42:18,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12052, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12888, PETRI_PLACES=365, PETRI_TRANSITIONS=656} [2024-11-20 17:42:18,734 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 343 predicate places. [2024-11-20 17:42:18,735 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 656 transitions, 12888 flow [2024-11-20 17:42:18,735 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) [2024-11-20 17:42:18,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:18,735 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:18,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:18,935 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 [2024-11-20 17:42:18,936 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)] === [2024-11-20 17:42:18,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:18,936 INFO L85 PathProgramCache]: Analyzing trace with hash 493537835, now seen corresponding path program 40 times [2024-11-20 17:42:18,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:18,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790910023] [2024-11-20 17:42:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:18,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:19,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:19,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790910023] [2024-11-20 17:42:19,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790910023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:19,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384278387] [2024-11-20 17:42:19,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:42:19,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:19,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:19,121 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) [2024-11-20 17:42:19,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-20 17:42:19,183 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:42:19,184 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:19,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:19,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:19,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:19,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:19,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384278387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:19,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:19,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2024-11-20 17:42:19,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437514720] [2024-11-20 17:42:19,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:19,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 17:42:19,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:19,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 17:42:19,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-20 17:42:19,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:19,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 656 transitions, 12888 flow. Second operand has 18 states, 18 states have (on average 6.388888888888889) internal successors, (115), 18 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:19,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:19,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:19,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:20,108 INFO L124 PetriNetUnfolderBase]: 1243/2058 cut-off events. [2024-11-20 17:42:20,108 INFO L125 PetriNetUnfolderBase]: For 69132/69132 co-relation queries the response was YES. [2024-11-20 17:42:20,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21049 conditions, 2058 events. 1243/2058 cut-off events. For 69132/69132 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11089 event pairs, 33 based on Foata normal form. 1/2059 useless extension candidates. Maximal degree in co-relation 20908. Up to 1824 conditions per place. [2024-11-20 17:42:20,135 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 593 selfloop transitions, 86 changer transitions 5/685 dead transitions. [2024-11-20 17:42:20,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 685 transitions, 14614 flow [2024-11-20 17:42:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 17:42:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 17:42:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-11-20 17:42:20,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-20 17:42:20,136 INFO L175 Difference]: Start difference. First operand has 365 places, 656 transitions, 12888 flow. Second operand 8 states and 85 transitions. [2024-11-20 17:42:20,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 685 transitions, 14614 flow [2024-11-20 17:42:20,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 685 transitions, 14353 flow, removed 98 selfloop flow, removed 3 redundant places. [2024-11-20 17:42:20,646 INFO L231 Difference]: Finished difference. Result has 370 places, 659 transitions, 12973 flow [2024-11-20 17:42:20,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12631, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12973, PETRI_PLACES=370, PETRI_TRANSITIONS=659} [2024-11-20 17:42:20,647 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 348 predicate places. [2024-11-20 17:42:20,648 INFO L471 AbstractCegarLoop]: Abstraction has has 370 places, 659 transitions, 12973 flow [2024-11-20 17:42:20,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.388888888888889) internal successors, (115), 18 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:20,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:20,648 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:20,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:20,848 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 [2024-11-20 17:42:20,849 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)] === [2024-11-20 17:42:20,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:20,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2005925891, now seen corresponding path program 41 times [2024-11-20 17:42:20,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:20,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906583493] [2024-11-20 17:42:20,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:20,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:21,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:21,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:21,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906583493] [2024-11-20 17:42:21,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906583493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:21,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880643845] [2024-11-20 17:42:21,061 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:42:21,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:21,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:21,063 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) [2024-11-20 17:42:21,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-20 17:42:21,116 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 17:42:21,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:21,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:21,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:21,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:21,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:21,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880643845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:21,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:21,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-20 17:42:21,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154697679] [2024-11-20 17:42:21,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:21,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 17:42:21,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:21,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 17:42:21,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-20 17:42:21,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:21,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 659 transitions, 12973 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) [2024-11-20 17:42:21,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:21,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:21,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:21,975 INFO L124 PetriNetUnfolderBase]: 1238/2047 cut-off events. [2024-11-20 17:42:21,975 INFO L125 PetriNetUnfolderBase]: For 66580/66580 co-relation queries the response was YES. [2024-11-20 17:42:21,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20909 conditions, 2047 events. 1238/2047 cut-off events. For 66580/66580 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11047 event pairs, 34 based on Foata normal form. 1/2048 useless extension candidates. Maximal degree in co-relation 20766. Up to 1866 conditions per place. [2024-11-20 17:42:22,002 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 606 selfloop transitions, 70 changer transitions 4/681 dead transitions. [2024-11-20 17:42:22,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 681 transitions, 14523 flow [2024-11-20 17:42:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 17:42:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 17:42:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-11-20 17:42:22,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 17:42:22,003 INFO L175 Difference]: Start difference. First operand has 370 places, 659 transitions, 12973 flow. Second operand 8 states and 80 transitions. [2024-11-20 17:42:22,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 681 transitions, 14523 flow [2024-11-20 17:42:22,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 681 transitions, 14301 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-11-20 17:42:22,381 INFO L231 Difference]: Finished difference. Result has 373 places, 662 transitions, 13045 flow [2024-11-20 17:42:22,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12753, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13045, PETRI_PLACES=373, PETRI_TRANSITIONS=662} [2024-11-20 17:42:22,382 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 351 predicate places. [2024-11-20 17:42:22,382 INFO L471 AbstractCegarLoop]: Abstraction has has 373 places, 662 transitions, 13045 flow [2024-11-20 17:42:22,382 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) [2024-11-20 17:42:22,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:22,382 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:22,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:22,583 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 [2024-11-20 17:42:22,583 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)] === [2024-11-20 17:42:22,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:22,583 INFO L85 PathProgramCache]: Analyzing trace with hash -894747047, now seen corresponding path program 42 times [2024-11-20 17:42:22,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:22,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373615100] [2024-11-20 17:42:22,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:22,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:22,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:22,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373615100] [2024-11-20 17:42:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373615100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324433662] [2024-11-20 17:42:22,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:42:22,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:22,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:22,789 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) [2024-11-20 17:42:22,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-20 17:42:22,848 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-20 17:42:22,848 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:22,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:22,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:22,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:23,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324433662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:23,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:23,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-20 17:42:23,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877204181] [2024-11-20 17:42:23,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:23,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 17:42:23,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:23,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 17:42:23,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-20 17:42:23,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:23,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 662 transitions, 13045 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) [2024-11-20 17:42:23,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:23,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:23,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:23,996 INFO L124 PetriNetUnfolderBase]: 1416/2392 cut-off events. [2024-11-20 17:42:23,996 INFO L125 PetriNetUnfolderBase]: For 82191/82191 co-relation queries the response was YES. [2024-11-20 17:42:24,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24589 conditions, 2392 events. 1416/2392 cut-off events. For 82191/82191 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13721 event pairs, 44 based on Foata normal form. 2/2394 useless extension candidates. Maximal degree in co-relation 24445. Up to 1964 conditions per place. [2024-11-20 17:42:24,099 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 682 selfloop transitions, 111 changer transitions 13/807 dead transitions. [2024-11-20 17:42:24,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 807 transitions, 17380 flow [2024-11-20 17:42:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:42:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:42:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-11-20 17:42:24,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5545454545454546 [2024-11-20 17:42:24,101 INFO L175 Difference]: Start difference. First operand has 373 places, 662 transitions, 13045 flow. Second operand 11 states and 122 transitions. [2024-11-20 17:42:24,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 807 transitions, 17380 flow [2024-11-20 17:42:24,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 807 transitions, 17119 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-11-20 17:42:24,493 INFO L231 Difference]: Finished difference. Result has 385 places, 729 transitions, 14746 flow [2024-11-20 17:42:24,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12798, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14746, PETRI_PLACES=385, PETRI_TRANSITIONS=729} [2024-11-20 17:42:24,493 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 363 predicate places. [2024-11-20 17:42:24,493 INFO L471 AbstractCegarLoop]: Abstraction has has 385 places, 729 transitions, 14746 flow [2024-11-20 17:42:24,494 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) [2024-11-20 17:42:24,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:24,494 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:24,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:24,695 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 [2024-11-20 17:42:24,695 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)] === [2024-11-20 17:42:24,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:24,695 INFO L85 PathProgramCache]: Analyzing trace with hash -972501557, now seen corresponding path program 43 times [2024-11-20 17:42:24,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:24,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052993819] [2024-11-20 17:42:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:24,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:24,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:24,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:24,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052993819] [2024-11-20 17:42:24,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052993819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:24,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039859762] [2024-11-20 17:42:24,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:42:24,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:24,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:24,859 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) [2024-11-20 17:42:24,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-20 17:42:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:24,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:24,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:24,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:25,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039859762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:25,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:25,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-20 17:42:25,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798017736] [2024-11-20 17:42:25,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:25,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 17:42:25,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:25,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 17:42:25,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-20 17:42:25,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:25,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 729 transitions, 14746 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) [2024-11-20 17:42:25,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:25,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:25,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:25,969 INFO L124 PetriNetUnfolderBase]: 1407/2365 cut-off events. [2024-11-20 17:42:25,969 INFO L125 PetriNetUnfolderBase]: For 86577/86577 co-relation queries the response was YES. [2024-11-20 17:42:25,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24833 conditions, 2365 events. 1407/2365 cut-off events. For 86577/86577 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13437 event pairs, 41 based on Foata normal form. 2/2367 useless extension candidates. Maximal degree in co-relation 24682. Up to 1964 conditions per place. [2024-11-20 17:42:25,999 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 670 selfloop transitions, 111 changer transitions 12/794 dead transitions. [2024-11-20 17:42:25,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 794 transitions, 17460 flow [2024-11-20 17:42:26,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:42:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:42:26,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-11-20 17:42:26,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-11-20 17:42:26,000 INFO L175 Difference]: Start difference. First operand has 385 places, 729 transitions, 14746 flow. Second operand 11 states and 116 transitions. [2024-11-20 17:42:26,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 794 transitions, 17460 flow [2024-11-20 17:42:26,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 794 transitions, 16957 flow, removed 250 selfloop flow, removed 3 redundant places. [2024-11-20 17:42:26,505 INFO L231 Difference]: Finished difference. Result has 394 places, 730 transitions, 14650 flow [2024-11-20 17:42:26,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14265, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14650, PETRI_PLACES=394, PETRI_TRANSITIONS=730} [2024-11-20 17:42:26,506 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 372 predicate places. [2024-11-20 17:42:26,506 INFO L471 AbstractCegarLoop]: Abstraction has has 394 places, 730 transitions, 14650 flow [2024-11-20 17:42:26,506 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) [2024-11-20 17:42:26,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:26,506 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:26,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:26,707 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 [2024-11-20 17:42:26,707 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)] === [2024-11-20 17:42:26,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:26,707 INFO L85 PathProgramCache]: Analyzing trace with hash -479564391, now seen corresponding path program 44 times [2024-11-20 17:42:26,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:26,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872668210] [2024-11-20 17:42:26,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:26,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:26,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:26,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872668210] [2024-11-20 17:42:26,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872668210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:26,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934503] [2024-11-20 17:42:26,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:42:26,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:26,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:26,907 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) [2024-11-20 17:42:26,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-20 17:42:26,965 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:42:26,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:26,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:26,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:27,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:27,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:27,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:27,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-20 17:42:27,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354872656] [2024-11-20 17:42:27,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:27,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 17:42:27,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:27,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 17:42:27,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-20 17:42:27,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:27,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 730 transitions, 14650 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) [2024-11-20 17:42:27,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:27,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:27,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:28,120 INFO L124 PetriNetUnfolderBase]: 1433/2418 cut-off events. [2024-11-20 17:42:28,120 INFO L125 PetriNetUnfolderBase]: For 83892/83892 co-relation queries the response was YES. [2024-11-20 17:42:28,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25113 conditions, 2418 events. 1433/2418 cut-off events. For 83892/83892 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13839 event pairs, 40 based on Foata normal form. 1/2419 useless extension candidates. Maximal degree in co-relation 24960. Up to 2173 conditions per place. [2024-11-20 17:42:28,154 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 692 selfloop transitions, 82 changer transitions 4/779 dead transitions. [2024-11-20 17:42:28,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 779 transitions, 16931 flow [2024-11-20 17:42:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:42:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:42:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-11-20 17:42:28,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-20 17:42:28,155 INFO L175 Difference]: Start difference. First operand has 394 places, 730 transitions, 14650 flow. Second operand 9 states and 92 transitions. [2024-11-20 17:42:28,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 779 transitions, 16931 flow [2024-11-20 17:42:28,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 779 transitions, 16543 flow, removed 102 selfloop flow, removed 7 redundant places. [2024-11-20 17:42:28,631 INFO L231 Difference]: Finished difference. Result has 396 places, 750 transitions, 14992 flow [2024-11-20 17:42:28,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14274, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14992, PETRI_PLACES=396, PETRI_TRANSITIONS=750} [2024-11-20 17:42:28,632 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 374 predicate places. [2024-11-20 17:42:28,632 INFO L471 AbstractCegarLoop]: Abstraction has has 396 places, 750 transitions, 14992 flow [2024-11-20 17:42:28,632 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) [2024-11-20 17:42:28,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:28,632 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:28,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:28,833 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 [2024-11-20 17:42:28,833 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)] === [2024-11-20 17:42:28,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:28,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1399807207, now seen corresponding path program 45 times [2024-11-20 17:42:28,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:28,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136176738] [2024-11-20 17:42:28,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:28,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:29,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:29,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136176738] [2024-11-20 17:42:29,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136176738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:29,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237341269] [2024-11-20 17:42:29,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:42:29,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:29,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:29,061 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) [2024-11-20 17:42:29,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-20 17:42:29,111 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-20 17:42:29,111 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:29,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:29,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:29,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:29,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237341269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:29,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:29,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-20 17:42:29,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843902485] [2024-11-20 17:42:29,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:29,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 17:42:29,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:29,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 17:42:29,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-20 17:42:29,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:29,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 750 transitions, 14992 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) [2024-11-20 17:42:29,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:29,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:29,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:30,162 INFO L124 PetriNetUnfolderBase]: 1480/2493 cut-off events. [2024-11-20 17:42:30,162 INFO L125 PetriNetUnfolderBase]: For 84962/84962 co-relation queries the response was YES. [2024-11-20 17:42:30,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25847 conditions, 2493 events. 1480/2493 cut-off events. For 84962/84962 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 14348 event pairs, 43 based on Foata normal form. 1/2494 useless extension candidates. Maximal degree in co-relation 25692. Up to 2181 conditions per place. [2024-11-20 17:42:30,201 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 704 selfloop transitions, 98 changer transitions 6/809 dead transitions. [2024-11-20 17:42:30,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 809 transitions, 17541 flow [2024-11-20 17:42:30,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 17:42:30,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 17:42:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-11-20 17:42:30,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-11-20 17:42:30,202 INFO L175 Difference]: Start difference. First operand has 396 places, 750 transitions, 14992 flow. Second operand 8 states and 92 transitions. [2024-11-20 17:42:30,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 809 transitions, 17541 flow [2024-11-20 17:42:30,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 809 transitions, 17183 flow, removed 124 selfloop flow, removed 5 redundant places. [2024-11-20 17:42:30,789 INFO L231 Difference]: Finished difference. Result has 400 places, 771 transitions, 15414 flow [2024-11-20 17:42:30,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14644, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15414, PETRI_PLACES=400, PETRI_TRANSITIONS=771} [2024-11-20 17:42:30,789 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 378 predicate places. [2024-11-20 17:42:30,789 INFO L471 AbstractCegarLoop]: Abstraction has has 400 places, 771 transitions, 15414 flow [2024-11-20 17:42:30,790 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) [2024-11-20 17:42:30,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:30,790 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:30,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-20 17:42:30,990 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 [2024-11-20 17:42:30,990 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)] === [2024-11-20 17:42:30,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:30,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1411105481, now seen corresponding path program 46 times [2024-11-20 17:42:30,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:30,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315588560] [2024-11-20 17:42:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:30,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:31,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:31,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315588560] [2024-11-20 17:42:31,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315588560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:31,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204887423] [2024-11-20 17:42:31,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:42:31,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:31,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:31,179 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) [2024-11-20 17:42:31,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-20 17:42:31,232 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:42:31,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:31,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:31,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:42:31,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:31,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204887423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:31,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:31,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-20 17:42:31,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095623234] [2024-11-20 17:42:31,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:31,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 17:42:31,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:31,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 17:42:31,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-20 17:42:31,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:31,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 771 transitions, 15414 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) [2024-11-20 17:42:31,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:31,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:31,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:32,438 INFO L124 PetriNetUnfolderBase]: 1475/2482 cut-off events. [2024-11-20 17:42:32,438 INFO L125 PetriNetUnfolderBase]: For 85499/85499 co-relation queries the response was YES. [2024-11-20 17:42:32,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25523 conditions, 2482 events. 1475/2482 cut-off events. For 85499/85499 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 14262 event pairs, 41 based on Foata normal form. 1/2483 useless extension candidates. Maximal degree in co-relation 25366. Up to 2331 conditions per place. [2024-11-20 17:42:32,476 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 728 selfloop transitions, 48 changer transitions 13/790 dead transitions. [2024-11-20 17:42:32,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 790 transitions, 17180 flow [2024-11-20 17:42:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:42:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:42:32,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-11-20 17:42:32,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-11-20 17:42:32,477 INFO L175 Difference]: Start difference. First operand has 400 places, 771 transitions, 15414 flow. Second operand 7 states and 71 transitions. [2024-11-20 17:42:32,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 790 transitions, 17180 flow [2024-11-20 17:42:33,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 790 transitions, 16878 flow, removed 78 selfloop flow, removed 5 redundant places. [2024-11-20 17:42:33,055 INFO L231 Difference]: Finished difference. Result has 402 places, 764 transitions, 15139 flow [2024-11-20 17:42:33,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15116, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=723, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15139, PETRI_PLACES=402, PETRI_TRANSITIONS=764} [2024-11-20 17:42:33,056 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 380 predicate places. [2024-11-20 17:42:33,056 INFO L471 AbstractCegarLoop]: Abstraction has has 402 places, 764 transitions, 15139 flow [2024-11-20 17:42:33,056 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) [2024-11-20 17:42:33,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:33,056 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:33,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-20 17:42:33,256 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 [2024-11-20 17:42:33,257 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)] === [2024-11-20 17:42:33,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1477561717, now seen corresponding path program 47 times [2024-11-20 17:42:33,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:33,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010060057] [2024-11-20 17:42:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:33,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:33,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:33,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010060057] [2024-11-20 17:42:33,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010060057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:33,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803445160] [2024-11-20 17:42:33,438 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:42:33,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:33,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:33,439 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) [2024-11-20 17:42:33,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-20 17:42:33,489 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 17:42:33,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:33,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:33,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:33,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:33,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803445160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:33,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:33,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-20 17:42:33,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201188709] [2024-11-20 17:42:33,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:33,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 17:42:33,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:33,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 17:42:33,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-20 17:42:33,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:33,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 764 transitions, 15139 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) [2024-11-20 17:42:33,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:33,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:33,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:34,609 INFO L124 PetriNetUnfolderBase]: 1461/2452 cut-off events. [2024-11-20 17:42:34,609 INFO L125 PetriNetUnfolderBase]: For 82071/82071 co-relation queries the response was YES. [2024-11-20 17:42:34,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25065 conditions, 2452 events. 1461/2452 cut-off events. For 82071/82071 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14032 event pairs, 40 based on Foata normal form. 1/2453 useless extension candidates. Maximal degree in co-relation 24907. Up to 2181 conditions per place. [2024-11-20 17:42:34,641 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 694 selfloop transitions, 92 changer transitions 6/793 dead transitions. [2024-11-20 17:42:34,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 793 transitions, 16961 flow [2024-11-20 17:42:34,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:42:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:42:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-11-20 17:42:34,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-11-20 17:42:34,642 INFO L175 Difference]: Start difference. First operand has 402 places, 764 transitions, 15139 flow. Second operand 9 states and 94 transitions. [2024-11-20 17:42:34,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 793 transitions, 16961 flow [2024-11-20 17:42:35,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 793 transitions, 16769 flow, removed 69 selfloop flow, removed 3 redundant places. [2024-11-20 17:42:35,130 INFO L231 Difference]: Finished difference. Result has 408 places, 766 transitions, 15258 flow [2024-11-20 17:42:35,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=14953, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15258, PETRI_PLACES=408, PETRI_TRANSITIONS=766} [2024-11-20 17:42:35,131 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 386 predicate places. [2024-11-20 17:42:35,131 INFO L471 AbstractCegarLoop]: Abstraction has has 408 places, 766 transitions, 15258 flow [2024-11-20 17:42:35,131 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) [2024-11-20 17:42:35,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:35,131 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:35,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:35,331 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 [2024-11-20 17:42:35,332 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)] === [2024-11-20 17:42:35,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:35,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1761351975, now seen corresponding path program 48 times [2024-11-20 17:42:35,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:35,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990168747] [2024-11-20 17:42:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:35,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:35,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:35,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990168747] [2024-11-20 17:42:35,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990168747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:35,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565334500] [2024-11-20 17:42:35,539 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:42:35,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:35,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:35,541 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) [2024-11-20 17:42:35,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-20 17:42:35,596 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-20 17:42:35,596 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:35,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:35,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:35,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:35,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565334500] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:35,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:35,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-20 17:42:35,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15926128] [2024-11-20 17:42:35,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:35,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 17:42:35,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 17:42:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-20 17:42:35,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:35,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 766 transitions, 15258 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) [2024-11-20 17:42:35,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:35,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:35,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:36,747 INFO L124 PetriNetUnfolderBase]: 1462/2466 cut-off events. [2024-11-20 17:42:36,747 INFO L125 PetriNetUnfolderBase]: For 82721/82721 co-relation queries the response was YES. [2024-11-20 17:42:36,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25235 conditions, 2466 events. 1462/2466 cut-off events. For 82721/82721 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14192 event pairs, 37 based on Foata normal form. 1/2467 useless extension candidates. Maximal degree in co-relation 25076. Up to 2213 conditions per place. [2024-11-20 17:42:36,783 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 716 selfloop transitions, 91 changer transitions 4/812 dead transitions. [2024-11-20 17:42:36,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 812 transitions, 17531 flow [2024-11-20 17:42:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:42:36,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:42:36,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-11-20 17:42:36,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-11-20 17:42:36,784 INFO L175 Difference]: Start difference. First operand has 408 places, 766 transitions, 15258 flow. Second operand 11 states and 107 transitions. [2024-11-20 17:42:36,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 812 transitions, 17531 flow [2024-11-20 17:42:37,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 812 transitions, 17336 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-20 17:42:37,291 INFO L231 Difference]: Finished difference. Result has 414 places, 781 transitions, 15752 flow [2024-11-20 17:42:37,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15069, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15752, PETRI_PLACES=414, PETRI_TRANSITIONS=781} [2024-11-20 17:42:37,292 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 392 predicate places. [2024-11-20 17:42:37,292 INFO L471 AbstractCegarLoop]: Abstraction has has 414 places, 781 transitions, 15752 flow [2024-11-20 17:42:37,292 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) [2024-11-20 17:42:37,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:37,292 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:37,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:37,493 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 [2024-11-20 17:42:37,493 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)] === [2024-11-20 17:42:37,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash 823002013, now seen corresponding path program 49 times [2024-11-20 17:42:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:37,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253795590] [2024-11-20 17:42:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:37,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:37,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:37,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253795590] [2024-11-20 17:42:37,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253795590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:37,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403830868] [2024-11-20 17:42:37,663 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:42:37,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:37,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:37,666 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) [2024-11-20 17:42:37,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-20 17:42:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:37,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 17:42:37,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:37,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:37,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403830868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:37,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:37,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-20 17:42:37,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520846097] [2024-11-20 17:42:37,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:37,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 17:42:37,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:37,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 17:42:37,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-20 17:42:37,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:37,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 781 transitions, 15752 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) [2024-11-20 17:42:37,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:37,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:37,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:38,847 INFO L124 PetriNetUnfolderBase]: 1461/2459 cut-off events. [2024-11-20 17:42:38,847 INFO L125 PetriNetUnfolderBase]: For 82996/82996 co-relation queries the response was YES. [2024-11-20 17:42:38,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25319 conditions, 2459 events. 1461/2459 cut-off events. For 82996/82996 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 14099 event pairs, 39 based on Foata normal form. 1/2460 useless extension candidates. Maximal degree in co-relation 25158. Up to 2140 conditions per place. [2024-11-20 17:42:38,883 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 710 selfloop transitions, 110 changer transitions 4/825 dead transitions. [2024-11-20 17:42:38,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 825 transitions, 17978 flow [2024-11-20 17:42:38,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:42:38,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:42:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-11-20 17:42:38,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2024-11-20 17:42:38,884 INFO L175 Difference]: Start difference. First operand has 414 places, 781 transitions, 15752 flow. Second operand 11 states and 111 transitions. [2024-11-20 17:42:38,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 825 transitions, 17978 flow [2024-11-20 17:42:39,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 825 transitions, 17607 flow, removed 117 selfloop flow, removed 7 redundant places. [2024-11-20 17:42:39,425 INFO L231 Difference]: Finished difference. Result has 419 places, 789 transitions, 15888 flow [2024-11-20 17:42:39,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15389, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15888, PETRI_PLACES=419, PETRI_TRANSITIONS=789} [2024-11-20 17:42:39,426 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 397 predicate places. [2024-11-20 17:42:39,426 INFO L471 AbstractCegarLoop]: Abstraction has has 419 places, 789 transitions, 15888 flow [2024-11-20 17:42:39,426 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) [2024-11-20 17:42:39,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:39,426 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:39,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-20 17:42:39,627 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 [2024-11-20 17:42:39,627 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)] === [2024-11-20 17:42:39,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:39,627 INFO L85 PathProgramCache]: Analyzing trace with hash -403040810, now seen corresponding path program 50 times [2024-11-20 17:42:39,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:39,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583428963] [2024-11-20 17:42:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:39,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:39,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:39,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:39,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583428963] [2024-11-20 17:42:39,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583428963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:39,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758961656] [2024-11-20 17:42:39,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:42:39,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:39,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:39,691 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) [2024-11-20 17:42:39,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-20 17:42:39,744 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:42:39,744 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:39,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 17:42:39,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:39,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:39,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758961656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:39,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:39,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-20 17:42:39,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865740478] [2024-11-20 17:42:39,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:39,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 17:42:39,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:39,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 17:42:39,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-20 17:42:39,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:39,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 789 transitions, 15888 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) [2024-11-20 17:42:39,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:39,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:39,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:40,989 INFO L124 PetriNetUnfolderBase]: 1930/3270 cut-off events. [2024-11-20 17:42:40,989 INFO L125 PetriNetUnfolderBase]: For 116848/116848 co-relation queries the response was YES. [2024-11-20 17:42:41,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33033 conditions, 3270 events. 1930/3270 cut-off events. For 116848/116848 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 19750 event pairs, 92 based on Foata normal form. 13/3283 useless extension candidates. Maximal degree in co-relation 32870. Up to 1058 conditions per place. [2024-11-20 17:42:41,038 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 650 selfloop transitions, 429 changer transitions 0/1080 dead transitions. [2024-11-20 17:42:41,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 1080 transitions, 23521 flow [2024-11-20 17:42:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 17:42:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 17:42:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-11-20 17:42:41,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-11-20 17:42:41,039 INFO L175 Difference]: Start difference. First operand has 419 places, 789 transitions, 15888 flow. Second operand 13 states and 126 transitions. [2024-11-20 17:42:41,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 1080 transitions, 23521 flow [2024-11-20 17:42:41,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 1080 transitions, 23002 flow, removed 112 selfloop flow, removed 9 redundant places. [2024-11-20 17:42:41,729 INFO L231 Difference]: Finished difference. Result has 430 places, 944 transitions, 20365 flow [2024-11-20 17:42:41,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=15547, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20365, PETRI_PLACES=430, PETRI_TRANSITIONS=944} [2024-11-20 17:42:41,730 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 408 predicate places. [2024-11-20 17:42:41,730 INFO L471 AbstractCegarLoop]: Abstraction has has 430 places, 944 transitions, 20365 flow [2024-11-20 17:42:41,730 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) [2024-11-20 17:42:41,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:41,730 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:41,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-20 17:42:41,931 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 [2024-11-20 17:42:41,931 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)] === [2024-11-20 17:42:41,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:41,931 INFO L85 PathProgramCache]: Analyzing trace with hash 580662329, now seen corresponding path program 51 times [2024-11-20 17:42:41,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:41,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034220824] [2024-11-20 17:42:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:41,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:42,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:42,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034220824] [2024-11-20 17:42:42,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034220824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:42,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749050328] [2024-11-20 17:42:42,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:42:42,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:42,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:42,004 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) [2024-11-20 17:42:42,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-20 17:42:42,057 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-20 17:42:42,057 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:42,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 17:42:42,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:42,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:42,126 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:42,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749050328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:42,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:42,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-20 17:42:42,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231183050] [2024-11-20 17:42:42,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:42,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 17:42:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:42,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 17:42:42,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-20 17:42:42,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:42,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 944 transitions, 20365 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) [2024-11-20 17:42:42,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:42,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:42,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:43,219 INFO L124 PetriNetUnfolderBase]: 1933/3282 cut-off events. [2024-11-20 17:42:43,219 INFO L125 PetriNetUnfolderBase]: For 124745/124745 co-relation queries the response was YES. [2024-11-20 17:42:43,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34541 conditions, 3282 events. 1933/3282 cut-off events. For 124745/124745 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 19904 event pairs, 357 based on Foata normal form. 3/3285 useless extension candidates. Maximal degree in co-relation 34371. Up to 2058 conditions per place. [2024-11-20 17:42:43,268 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 803 selfloop transitions, 245 changer transitions 12/1061 dead transitions. [2024-11-20 17:42:43,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 1061 transitions, 24491 flow [2024-11-20 17:42:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:42:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:42:43,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-11-20 17:42:43,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 17:42:43,270 INFO L175 Difference]: Start difference. First operand has 430 places, 944 transitions, 20365 flow. Second operand 9 states and 90 transitions. [2024-11-20 17:42:43,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 1061 transitions, 24491 flow [2024-11-20 17:42:44,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 1061 transitions, 24080 flow, removed 115 selfloop flow, removed 3 redundant places. [2024-11-20 17:42:44,084 INFO L231 Difference]: Finished difference. Result has 438 places, 942 transitions, 20402 flow [2024-11-20 17:42:44,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=19954, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=699, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20402, PETRI_PLACES=438, PETRI_TRANSITIONS=942} [2024-11-20 17:42:44,085 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 416 predicate places. [2024-11-20 17:42:44,086 INFO L471 AbstractCegarLoop]: Abstraction has has 438 places, 942 transitions, 20402 flow [2024-11-20 17:42:44,086 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) [2024-11-20 17:42:44,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:44,086 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:44,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:44,286 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 [2024-11-20 17:42:44,286 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)] === [2024-11-20 17:42:44,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:44,287 INFO L85 PathProgramCache]: Analyzing trace with hash -894717218, now seen corresponding path program 52 times [2024-11-20 17:42:44,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:44,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100678372] [2024-11-20 17:42:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:44,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:44,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:44,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100678372] [2024-11-20 17:42:44,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100678372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:44,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822101808] [2024-11-20 17:42:44,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:42:44,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:44,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:44,369 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) [2024-11-20 17:42:44,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-20 17:42:44,421 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:42:44,422 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:44,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 17:42:44,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:44,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:44,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822101808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:44,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:44,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-20 17:42:44,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116791735] [2024-11-20 17:42:44,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:44,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 17:42:44,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:44,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 17:42:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-20 17:42:44,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:44,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 942 transitions, 20402 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) [2024-11-20 17:42:44,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:44,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:44,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:45,796 INFO L124 PetriNetUnfolderBase]: 2018/3417 cut-off events. [2024-11-20 17:42:45,796 INFO L125 PetriNetUnfolderBase]: For 134478/134478 co-relation queries the response was YES. [2024-11-20 17:42:45,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36219 conditions, 3417 events. 2018/3417 cut-off events. For 134478/134478 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 20803 event pairs, 183 based on Foata normal form. 16/3433 useless extension candidates. Maximal degree in co-relation 36046. Up to 1538 conditions per place. [2024-11-20 17:42:45,850 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 648 selfloop transitions, 382 changer transitions 0/1031 dead transitions. [2024-11-20 17:42:45,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 1031 transitions, 23983 flow [2024-11-20 17:42:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-20 17:42:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-20 17:42:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 164 transitions. [2024-11-20 17:42:45,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-11-20 17:42:45,851 INFO L175 Difference]: Start difference. First operand has 438 places, 942 transitions, 20402 flow. Second operand 19 states and 164 transitions. [2024-11-20 17:42:45,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 1031 transitions, 23983 flow [2024-11-20 17:42:46,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 1031 transitions, 23391 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-11-20 17:42:46,665 INFO L231 Difference]: Finished difference. Result has 453 places, 985 transitions, 21751 flow [2024-11-20 17:42:46,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=19825, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=21751, PETRI_PLACES=453, PETRI_TRANSITIONS=985} [2024-11-20 17:42:46,666 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 431 predicate places. [2024-11-20 17:42:46,666 INFO L471 AbstractCegarLoop]: Abstraction has has 453 places, 985 transitions, 21751 flow [2024-11-20 17:42:46,666 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) [2024-11-20 17:42:46,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:46,667 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:46,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-20 17:42:46,867 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 [2024-11-20 17:42:46,867 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)] === [2024-11-20 17:42:46,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:46,867 INFO L85 PathProgramCache]: Analyzing trace with hash -953935908, now seen corresponding path program 53 times [2024-11-20 17:42:46,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:46,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361660736] [2024-11-20 17:42:46,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:46,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:46,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:46,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361660736] [2024-11-20 17:42:46,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361660736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:46,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946955607] [2024-11-20 17:42:46,930 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:42:46,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:46,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:46,931 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) [2024-11-20 17:42:46,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-20 17:42:46,983 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-20 17:42:46,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:46,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 17:42:46,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:47,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:47,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946955607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:47,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:47,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-20 17:42:47,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064806991] [2024-11-20 17:42:47,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:47,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:42:47,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:47,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:42:47,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:42:47,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:47,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 985 transitions, 21751 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) [2024-11-20 17:42:47,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:47,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:47,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:48,524 INFO L124 PetriNetUnfolderBase]: 2149/3625 cut-off events. [2024-11-20 17:42:48,525 INFO L125 PetriNetUnfolderBase]: For 158944/158944 co-relation queries the response was YES. [2024-11-20 17:42:48,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40410 conditions, 3625 events. 2149/3625 cut-off events. For 158944/158944 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 22265 event pairs, 155 based on Foata normal form. 20/3645 useless extension candidates. Maximal degree in co-relation 40233. Up to 1268 conditions per place. [2024-11-20 17:42:48,584 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 547 selfloop transitions, 552 changer transitions 0/1100 dead transitions. [2024-11-20 17:42:48,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 1100 transitions, 26961 flow [2024-11-20 17:42:48,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-20 17:42:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-20 17:42:48,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 209 transitions. [2024-11-20 17:42:48,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4354166666666667 [2024-11-20 17:42:48,585 INFO L175 Difference]: Start difference. First operand has 453 places, 985 transitions, 21751 flow. Second operand 24 states and 209 transitions. [2024-11-20 17:42:48,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 1100 transitions, 26961 flow [2024-11-20 17:42:49,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 1100 transitions, 26326 flow, removed 237 selfloop flow, removed 4 redundant places. [2024-11-20 17:42:49,486 INFO L231 Difference]: Finished difference. Result has 478 places, 1061 transitions, 25472 flow [2024-11-20 17:42:49,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=21340, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=985, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=25472, PETRI_PLACES=478, PETRI_TRANSITIONS=1061} [2024-11-20 17:42:49,488 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 456 predicate places. [2024-11-20 17:42:49,488 INFO L471 AbstractCegarLoop]: Abstraction has has 478 places, 1061 transitions, 25472 flow [2024-11-20 17:42:49,488 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) [2024-11-20 17:42:49,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:49,488 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:49,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:49,689 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 [2024-11-20 17:42:49,689 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)] === [2024-11-20 17:42:49,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:49,689 INFO L85 PathProgramCache]: Analyzing trace with hash -546081856, now seen corresponding path program 54 times [2024-11-20 17:42:49,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:49,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780172499] [2024-11-20 17:42:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:49,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:49,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:49,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780172499] [2024-11-20 17:42:49,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780172499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:49,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119132295] [2024-11-20 17:42:49,763 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:42:49,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:49,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:49,764 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) [2024-11-20 17:42:49,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-20 17:42:49,818 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-20 17:42:49,819 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:49,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 17:42:49,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:49,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:49,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119132295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:49,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:49,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-20 17:42:49,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098438651] [2024-11-20 17:42:49,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:49,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:42:49,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:49,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:42:49,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:42:49,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:49,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 1061 transitions, 25472 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) [2024-11-20 17:42:49,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:49,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:49,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:51,479 INFO L124 PetriNetUnfolderBase]: 2147/3631 cut-off events. [2024-11-20 17:42:51,479 INFO L125 PetriNetUnfolderBase]: For 160639/160639 co-relation queries the response was YES. [2024-11-20 17:42:51,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41787 conditions, 3631 events. 2147/3631 cut-off events. For 160639/160639 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 22510 event pairs, 239 based on Foata normal form. 8/3639 useless extension candidates. Maximal degree in co-relation 41604. Up to 1415 conditions per place. [2024-11-20 17:42:51,540 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 610 selfloop transitions, 479 changer transitions 4/1094 dead transitions. [2024-11-20 17:42:51,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 1094 transitions, 27897 flow [2024-11-20 17:42:51,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-20 17:42:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-20 17:42:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 163 transitions. [2024-11-20 17:42:51,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42894736842105263 [2024-11-20 17:42:51,541 INFO L175 Difference]: Start difference. First operand has 478 places, 1061 transitions, 25472 flow. Second operand 19 states and 163 transitions. [2024-11-20 17:42:51,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 1094 transitions, 27897 flow [2024-11-20 17:42:52,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1094 transitions, 25726 flow, removed 858 selfloop flow, removed 12 redundant places. [2024-11-20 17:42:52,645 INFO L231 Difference]: Finished difference. Result has 486 places, 1059 transitions, 24277 flow [2024-11-20 17:42:52,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=23302, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=24277, PETRI_PLACES=486, PETRI_TRANSITIONS=1059} [2024-11-20 17:42:52,646 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 464 predicate places. [2024-11-20 17:42:52,646 INFO L471 AbstractCegarLoop]: Abstraction has has 486 places, 1059 transitions, 24277 flow [2024-11-20 17:42:52,646 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) [2024-11-20 17:42:52,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:52,647 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:52,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:52,847 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 [2024-11-20 17:42:52,847 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)] === [2024-11-20 17:42:52,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:52,848 INFO L85 PathProgramCache]: Analyzing trace with hash -523508115, now seen corresponding path program 55 times [2024-11-20 17:42:52,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:52,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450294885] [2024-11-20 17:42:52,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:52,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:52,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:52,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450294885] [2024-11-20 17:42:52,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450294885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:52,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781408196] [2024-11-20 17:42:52,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:42:52,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:52,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:52,948 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) [2024-11-20 17:42:52,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-20 17:42:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:53,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 17:42:53,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:53,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:53,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781408196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:53,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:53,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-20 17:42:53,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435076102] [2024-11-20 17:42:53,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:53,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 17:42:53,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:53,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 17:42:53,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-20 17:42:53,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:53,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1059 transitions, 24277 flow. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2024-11-20 17:42:53,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:53,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:53,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:54,406 INFO L124 PetriNetUnfolderBase]: 2164/3668 cut-off events. [2024-11-20 17:42:54,407 INFO L125 PetriNetUnfolderBase]: For 129507/129507 co-relation queries the response was YES. [2024-11-20 17:42:54,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39708 conditions, 3668 events. 2164/3668 cut-off events. For 129507/129507 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 22712 event pairs, 432 based on Foata normal form. 12/3680 useless extension candidates. Maximal degree in co-relation 39526. Up to 2620 conditions per place. [2024-11-20 17:42:54,473 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 864 selfloop transitions, 300 changer transitions 11/1176 dead transitions. [2024-11-20 17:42:54,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1176 transitions, 28968 flow [2024-11-20 17:42:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 17:42:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 17:42:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 134 transitions. [2024-11-20 17:42:54,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2024-11-20 17:42:54,474 INFO L175 Difference]: Start difference. First operand has 486 places, 1059 transitions, 24277 flow. Second operand 15 states and 134 transitions. [2024-11-20 17:42:54,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 1176 transitions, 28968 flow [2024-11-20 17:42:55,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1176 transitions, 27849 flow, removed 52 selfloop flow, removed 17 redundant places. [2024-11-20 17:42:55,428 INFO L231 Difference]: Finished difference. Result has 486 places, 1083 transitions, 24659 flow [2024-11-20 17:42:55,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=23164, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1059, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=765, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=24659, PETRI_PLACES=486, PETRI_TRANSITIONS=1083} [2024-11-20 17:42:55,429 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 464 predicate places. [2024-11-20 17:42:55,429 INFO L471 AbstractCegarLoop]: Abstraction has has 486 places, 1083 transitions, 24659 flow [2024-11-20 17:42:55,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 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) [2024-11-20 17:42:55,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:55,430 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:55,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:55,630 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 [2024-11-20 17:42:55,630 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)] === [2024-11-20 17:42:55,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:55,631 INFO L85 PathProgramCache]: Analyzing trace with hash -406280744, now seen corresponding path program 56 times [2024-11-20 17:42:55,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:55,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52108087] [2024-11-20 17:42:55,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:55,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:55,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:55,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52108087] [2024-11-20 17:42:55,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52108087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:55,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094544646] [2024-11-20 17:42:55,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:42:55,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:55,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:55,709 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) [2024-11-20 17:42:55,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-20 17:42:55,770 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:42:55,770 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:55,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 17:42:55,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:55,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:55,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094544646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:55,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:55,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-20 17:42:55,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504478092] [2024-11-20 17:42:55,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:55,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:42:55,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:55,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:42:55,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:42:55,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:55,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1083 transitions, 24659 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) [2024-11-20 17:42:55,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:55,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:55,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:57,504 INFO L124 PetriNetUnfolderBase]: 2227/3775 cut-off events. [2024-11-20 17:42:57,504 INFO L125 PetriNetUnfolderBase]: For 131142/131142 co-relation queries the response was YES. [2024-11-20 17:42:57,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40344 conditions, 3775 events. 2227/3775 cut-off events. For 131142/131142 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 23492 event pairs, 178 based on Foata normal form. 12/3787 useless extension candidates. Maximal degree in co-relation 40160. Up to 1537 conditions per place. [2024-11-20 17:42:57,568 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 671 selfloop transitions, 490 changer transitions 0/1162 dead transitions. [2024-11-20 17:42:57,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1162 transitions, 28015 flow [2024-11-20 17:42:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 17:42:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-20 17:42:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 179 transitions. [2024-11-20 17:42:57,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4261904761904762 [2024-11-20 17:42:57,569 INFO L175 Difference]: Start difference. First operand has 486 places, 1083 transitions, 24659 flow. Second operand 21 states and 179 transitions. [2024-11-20 17:42:57,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 1162 transitions, 28015 flow [2024-11-20 17:42:58,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1162 transitions, 26960 flow, removed 197 selfloop flow, removed 10 redundant places. [2024-11-20 17:42:58,555 INFO L231 Difference]: Finished difference. Result has 500 places, 1122 transitions, 25702 flow [2024-11-20 17:42:58,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=23614, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1083, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=452, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=25702, PETRI_PLACES=500, PETRI_TRANSITIONS=1122} [2024-11-20 17:42:58,556 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 478 predicate places. [2024-11-20 17:42:58,556 INFO L471 AbstractCegarLoop]: Abstraction has has 500 places, 1122 transitions, 25702 flow [2024-11-20 17:42:58,556 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) [2024-11-20 17:42:58,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:58,557 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:58,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-20 17:42:58,757 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 [2024-11-20 17:42:58,757 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)] === [2024-11-20 17:42:58,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash -15109819, now seen corresponding path program 57 times [2024-11-20 17:42:58,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:58,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417765328] [2024-11-20 17:42:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:58,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:58,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:58,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417765328] [2024-11-20 17:42:58,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417765328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937261459] [2024-11-20 17:42:58,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:42:58,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:58,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:58,830 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) [2024-11-20 17:42:58,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-20 17:42:58,884 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-20 17:42:58,884 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:58,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 17:42:58,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:58,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:58,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937261459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:58,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:58,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-20 17:42:58,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106944900] [2024-11-20 17:42:58,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:58,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:42:58,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:58,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:42:58,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:42:58,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-20 17:42:58,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1122 transitions, 25702 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) [2024-11-20 17:42:58,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:58,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-20 17:42:58,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand