./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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-?-c7c6ca5-m [2024-11-09 10:48:07,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:48:07,331 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:48:07,336 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:48:07,337 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:48:07,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:48:07,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:48:07,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:48:07,390 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:48:07,391 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:48:07,392 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:48:07,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:48:07,393 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:48:07,393 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:48:07,394 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:48:07,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:48:07,397 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:48:07,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:48:07,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:48:07,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:48:07,398 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:48:07,399 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:48:07,399 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:48:07,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:48:07,399 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:48:07,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:48:07,400 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:48:07,400 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:48:07,400 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:48:07,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:48:07,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:48:07,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:48:07,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:48:07,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:48:07,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:48:07,411 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:48:07,411 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:48:07,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:48:07,412 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:48:07,412 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:48:07,412 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:48:07,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:48:07,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-11-09 10:48:07,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:48:07,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:48:07,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:48:07,712 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:48:07,713 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:48:07,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-09 10:48:09,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:48:09,409 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:48:09,410 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-09 10:48:09,418 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0d13834/37d1d5142829483cb5a7d3c7b3121d80/FLAG76194579e [2024-11-09 10:48:09,431 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0d13834/37d1d5142829483cb5a7d3c7b3121d80 [2024-11-09 10:48:09,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:48:09,434 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:48:09,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:48:09,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:48:09,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:48:09,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a22e87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09, skipping insertion in model container [2024-11-09 10:48:09,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,469 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:48:09,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:48:09,673 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:48:09,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:48:09,713 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:48:09,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09 WrapperNode [2024-11-09 10:48:09,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:48:09,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:48:09,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:48:09,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:48:09,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,761 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 162 [2024-11-09 10:48:09,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:48:09,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:48:09,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:48:09,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:48:09,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,775 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,794 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]. [2024-11-09 10:48:09,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,801 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:48:09,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:48:09,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:48:09,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:48:09,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (1/1) ... [2024-11-09 10:48:09,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:48:09,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:09,850 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) [2024-11-09 10:48:09,857 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 [2024-11-09 10:48:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:48:09,905 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:48:09,905 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:48:09,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:48:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:48:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:48:09,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:48:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:48:09,909 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:48:10,037 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:48:10,040 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:48:10,344 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:48:10,345 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:48:10,715 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:48:10,715 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 10:48:10,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:48:10 BoogieIcfgContainer [2024-11-09 10:48:10,716 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:48:10,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:48:10,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:48:10,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:48:10,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:48:09" (1/3) ... [2024-11-09 10:48:10,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7663599c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:48:10, skipping insertion in model container [2024-11-09 10:48:10,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:09" (2/3) ... [2024-11-09 10:48:10,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7663599c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:48:10, skipping insertion in model container [2024-11-09 10:48:10,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:48:10" (3/3) ... [2024-11-09 10:48:10,724 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-11-09 10:48:10,741 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:48:10,741 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:48:10,741 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:48:10,788 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:48:10,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-11-09 10:48:10,852 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-09 10:48:10,853 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:48:10,856 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. [2024-11-09 10:48:10,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-11-09 10:48:10,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-11-09 10:48:10,866 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:48:10,873 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;@1b30c8c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:48:10,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 10:48:10,881 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:48:10,882 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-09 10:48:10,882 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:48:10,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:10,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:10,883 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)] === [2024-11-09 10:48:10,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:10,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1376092147, now seen corresponding path program 1 times [2024-11-09 10:48:10,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:10,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447812605] [2024-11-09 10:48:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:10,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:11,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:11,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447812605] [2024-11-09 10:48:11,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447812605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:11,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:11,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:48:11,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018258694] [2024-11-09 10:48:11,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:11,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:11,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:11,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:11,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:11,521 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) [2024-11-09 10:48:11,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:11,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:11,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:11,756 INFO L124 PetriNetUnfolderBase]: 67/128 cut-off events. [2024-11-09 10:48:11,756 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-09 10:48:11,757 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. [2024-11-09 10:48:11,760 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 25 selfloop transitions, 5 changer transitions 4/35 dead transitions. [2024-11-09 10:48:11,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 35 transitions, 168 flow [2024-11-09 10:48:11,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-11-09 10:48:11,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-09 10:48:11,777 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 5 states and 57 transitions. [2024-11-09 10:48:11,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 35 transitions, 168 flow [2024-11-09 10:48:11,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:48:11,784 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 68 flow [2024-11-09 10:48:11,786 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} [2024-11-09 10:48:11,790 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2024-11-09 10:48:11,792 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 68 flow [2024-11-09 10:48:11,792 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) [2024-11-09 10:48:11,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:11,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:11,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:48:11,794 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)] === [2024-11-09 10:48:11,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:11,795 INFO L85 PathProgramCache]: Analyzing trace with hash 2082207311, now seen corresponding path program 2 times [2024-11-09 10:48:11,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:11,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022208672] [2024-11-09 10:48:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:11,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:12,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:12,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022208672] [2024-11-09 10:48:12,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022208672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:12,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:12,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:48:12,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583489084] [2024-11-09 10:48:12,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:12,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:12,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:12,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:12,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:12,061 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) [2024-11-09 10:48:12,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:12,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:12,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:12,230 INFO L124 PetriNetUnfolderBase]: 66/121 cut-off events. [2024-11-09 10:48:12,230 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-09 10:48:12,233 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. [2024-11-09 10:48:12,235 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 24 selfloop transitions, 6 changer transitions 4/35 dead transitions. [2024-11-09 10:48:12,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 182 flow [2024-11-09 10:48:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-11-09 10:48:12,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-11-09 10:48:12,238 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 68 flow. Second operand 5 states and 54 transitions. [2024-11-09 10:48:12,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 182 flow [2024-11-09 10:48:12,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 180 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 10:48:12,240 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 100 flow [2024-11-09 10:48:12,240 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} [2024-11-09 10:48:12,242 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 6 predicate places. [2024-11-09 10:48:12,243 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 100 flow [2024-11-09 10:48:12,243 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) [2024-11-09 10:48:12,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:12,244 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:12,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:48:12,245 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)] === [2024-11-09 10:48:12,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1488777393, now seen corresponding path program 1 times [2024-11-09 10:48:12,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:12,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310503562] [2024-11-09 10:48:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:12,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:12,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310503562] [2024-11-09 10:48:12,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310503562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:12,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:12,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:12,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703859456] [2024-11-09 10:48:12,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:12,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:12,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:12,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:12,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:12,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:12,339 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) [2024-11-09 10:48:12,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:12,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:12,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:12,443 INFO L124 PetriNetUnfolderBase]: 80/140 cut-off events. [2024-11-09 10:48:12,443 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-11-09 10:48:12,444 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. [2024-11-09 10:48:12,446 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 24 selfloop transitions, 10 changer transitions 3/38 dead transitions. [2024-11-09 10:48:12,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 256 flow [2024-11-09 10:48:12,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:12,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-11-09 10:48:12,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:48:12,451 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 100 flow. Second operand 5 states and 50 transitions. [2024-11-09 10:48:12,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 256 flow [2024-11-09 10:48:12,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 242 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 10:48:12,456 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 168 flow [2024-11-09 10:48:12,456 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} [2024-11-09 10:48:12,457 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 10 predicate places. [2024-11-09 10:48:12,460 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 168 flow [2024-11-09 10:48:12,460 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) [2024-11-09 10:48:12,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:12,460 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:12,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:48:12,461 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)] === [2024-11-09 10:48:12,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1405972326, now seen corresponding path program 1 times [2024-11-09 10:48:12,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:12,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562972851] [2024-11-09 10:48:12,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:12,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:12,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:12,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562972851] [2024-11-09 10:48:12,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562972851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:12,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066698466] [2024-11-09 10:48:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:12,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:12,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:12,525 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) [2024-11-09 10:48:12,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:48:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:12,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 10:48:12,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:12,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:12,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066698466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:12,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:12,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-09 10:48:12,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414961929] [2024-11-09 10:48:12,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:12,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:48:12,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:12,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:48:12,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:48:12,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:12,693 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) [2024-11-09 10:48:12,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:12,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:12,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:12,871 INFO L124 PetriNetUnfolderBase]: 90/161 cut-off events. [2024-11-09 10:48:12,871 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-11-09 10:48:12,872 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. [2024-11-09 10:48:12,874 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 42 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-11-09 10:48:12,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 385 flow [2024-11-09 10:48:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:48:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:48:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-11-09 10:48:12,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-09 10:48:12,875 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 168 flow. Second operand 7 states and 74 transitions. [2024-11-09 10:48:12,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 385 flow [2024-11-09 10:48:12,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 56 transitions, 364 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-09 10:48:12,879 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 211 flow [2024-11-09 10:48:12,879 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} [2024-11-09 10:48:12,880 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 15 predicate places. [2024-11-09 10:48:12,881 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 211 flow [2024-11-09 10:48:12,881 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) [2024-11-09 10:48:12,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:12,881 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:12,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:48:13,082 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 [2024-11-09 10:48:13,082 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)] === [2024-11-09 10:48:13,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:13,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2005550949, now seen corresponding path program 2 times [2024-11-09 10:48:13,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:13,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15150248] [2024-11-09 10:48:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:13,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:13,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:13,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15150248] [2024-11-09 10:48:13,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15150248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:13,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:13,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:13,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560797895] [2024-11-09 10:48:13,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:13,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:13,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:13,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:13,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:13,138 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) [2024-11-09 10:48:13,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:13,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:13,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:13,235 INFO L124 PetriNetUnfolderBase]: 89/163 cut-off events. [2024-11-09 10:48:13,235 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-11-09 10:48:13,236 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. [2024-11-09 10:48:13,239 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 37 selfloop transitions, 7 changer transitions 5/50 dead transitions. [2024-11-09 10:48:13,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 393 flow [2024-11-09 10:48:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:13,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-11-09 10:48:13,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-11-09 10:48:13,242 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 211 flow. Second operand 5 states and 54 transitions. [2024-11-09 10:48:13,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 393 flow [2024-11-09 10:48:13,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 368 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-09 10:48:13,249 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 208 flow [2024-11-09 10:48:13,250 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} [2024-11-09 10:48:13,251 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 20 predicate places. [2024-11-09 10:48:13,253 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 208 flow [2024-11-09 10:48:13,253 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) [2024-11-09 10:48:13,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:13,253 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:13,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:48:13,254 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)] === [2024-11-09 10:48:13,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:13,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1198369694, now seen corresponding path program 2 times [2024-11-09 10:48:13,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:13,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582854945] [2024-11-09 10:48:13,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:13,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:13,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:13,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:13,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582854945] [2024-11-09 10:48:13,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582854945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:13,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835136137] [2024-11-09 10:48:13,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:13,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:13,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:13,336 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) [2024-11-09 10:48:13,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:48:13,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:13,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:13,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 10:48:13,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:13,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:13,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835136137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:13,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:13,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 10:48:13,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722090158] [2024-11-09 10:48:13,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:13,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 10:48:13,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:13,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 10:48:13,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:48:13,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:13,475 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) [2024-11-09 10:48:13,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:13,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:13,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:13,599 INFO L124 PetriNetUnfolderBase]: 106/187 cut-off events. [2024-11-09 10:48:13,600 INFO L125 PetriNetUnfolderBase]: For 446/446 co-relation queries the response was YES. [2024-11-09 10:48:13,601 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. [2024-11-09 10:48:13,602 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 28 selfloop transitions, 21 changer transitions 1/51 dead transitions. [2024-11-09 10:48:13,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 428 flow [2024-11-09 10:48:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:48:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:48:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2024-11-09 10:48:13,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-09 10:48:13,605 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 208 flow. Second operand 6 states and 59 transitions. [2024-11-09 10:48:13,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 428 flow [2024-11-09 10:48:13,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 409 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:13,611 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 345 flow [2024-11-09 10:48:13,612 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} [2024-11-09 10:48:13,613 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 25 predicate places. [2024-11-09 10:48:13,614 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 345 flow [2024-11-09 10:48:13,614 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) [2024-11-09 10:48:13,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:13,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:13,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:48:13,818 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 [2024-11-09 10:48:13,819 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)] === [2024-11-09 10:48:13,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:13,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1987061216, now seen corresponding path program 3 times [2024-11-09 10:48:13,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:13,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107780398] [2024-11-09 10:48:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:13,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:13,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:13,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107780398] [2024-11-09 10:48:13,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107780398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:13,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:13,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:13,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671182835] [2024-11-09 10:48:13,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:13,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:13,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:13,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:13,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:13,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:13,877 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) [2024-11-09 10:48:13,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:13,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:13,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:13,971 INFO L124 PetriNetUnfolderBase]: 104/190 cut-off events. [2024-11-09 10:48:13,973 INFO L125 PetriNetUnfolderBase]: For 626/626 co-relation queries the response was YES. [2024-11-09 10:48:13,974 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. [2024-11-09 10:48:13,975 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 33 selfloop transitions, 16 changer transitions 3/53 dead transitions. [2024-11-09 10:48:13,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 501 flow [2024-11-09 10:48:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-11-09 10:48:13,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:48:13,978 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 345 flow. Second operand 5 states and 50 transitions. [2024-11-09 10:48:13,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 501 flow [2024-11-09 10:48:13,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 461 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-11-09 10:48:13,983 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 332 flow [2024-11-09 10:48:13,983 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} [2024-11-09 10:48:13,984 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 29 predicate places. [2024-11-09 10:48:13,984 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 332 flow [2024-11-09 10:48:13,984 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) [2024-11-09 10:48:13,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:13,984 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:13,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:48:13,985 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)] === [2024-11-09 10:48:13,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:13,985 INFO L85 PathProgramCache]: Analyzing trace with hash -369403695, now seen corresponding path program 3 times [2024-11-09 10:48:13,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:13,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876108113] [2024-11-09 10:48:13,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:13,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:14,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:14,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876108113] [2024-11-09 10:48:14,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876108113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:14,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583153410] [2024-11-09 10:48:14,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:14,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:14,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:14,060 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) [2024-11-09 10:48:14,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:48:14,131 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:48:14,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:14,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 10:48:14,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:14,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:14,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583153410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:14,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:14,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-09 10:48:14,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266815137] [2024-11-09 10:48:14,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:14,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:48:14,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:48:14,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:48:14,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:14,194 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) [2024-11-09 10:48:14,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:14,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:14,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:14,334 INFO L124 PetriNetUnfolderBase]: 108/194 cut-off events. [2024-11-09 10:48:14,334 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2024-11-09 10:48:14,335 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. [2024-11-09 10:48:14,337 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 41 selfloop transitions, 22 changer transitions 0/64 dead transitions. [2024-11-09 10:48:14,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 589 flow [2024-11-09 10:48:14,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:48:14,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:48:14,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-11-09 10:48:14,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-11-09 10:48:14,338 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 332 flow. Second operand 7 states and 69 transitions. [2024-11-09 10:48:14,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 589 flow [2024-11-09 10:48:14,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 547 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-09 10:48:14,343 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 392 flow [2024-11-09 10:48:14,343 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} [2024-11-09 10:48:14,344 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2024-11-09 10:48:14,344 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 392 flow [2024-11-09 10:48:14,344 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) [2024-11-09 10:48:14,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:14,344 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:14,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:14,548 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 [2024-11-09 10:48:14,549 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)] === [2024-11-09 10:48:14,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:14,550 INFO L85 PathProgramCache]: Analyzing trace with hash -376227406, now seen corresponding path program 4 times [2024-11-09 10:48:14,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:14,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404805387] [2024-11-09 10:48:14,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:14,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:14,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:14,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:14,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404805387] [2024-11-09 10:48:14,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404805387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:14,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:14,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:14,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377052557] [2024-11-09 10:48:14,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:14,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:14,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:14,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:14,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:14,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:14,603 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) [2024-11-09 10:48:14,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:14,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:14,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:14,686 INFO L124 PetriNetUnfolderBase]: 107/195 cut-off events. [2024-11-09 10:48:14,686 INFO L125 PetriNetUnfolderBase]: For 822/822 co-relation queries the response was YES. [2024-11-09 10:48:14,687 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. [2024-11-09 10:48:14,688 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 34 selfloop transitions, 15 changer transitions 2/52 dead transitions. [2024-11-09 10:48:14,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 531 flow [2024-11-09 10:48:14,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2024-11-09 10:48:14,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-09 10:48:14,690 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 392 flow. Second operand 5 states and 48 transitions. [2024-11-09 10:48:14,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 531 flow [2024-11-09 10:48:14,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 475 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:14,694 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 357 flow [2024-11-09 10:48:14,694 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} [2024-11-09 10:48:14,695 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 32 predicate places. [2024-11-09 10:48:14,695 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 357 flow [2024-11-09 10:48:14,695 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) [2024-11-09 10:48:14,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:14,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:14,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:48:14,696 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)] === [2024-11-09 10:48:14,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:14,697 INFO L85 PathProgramCache]: Analyzing trace with hash -425271452, now seen corresponding path program 5 times [2024-11-09 10:48:14,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:14,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114542465] [2024-11-09 10:48:14,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:14,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:14,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114542465] [2024-11-09 10:48:14,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114542465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300630913] [2024-11-09 10:48:14,750 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:48:14,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:14,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:14,753 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) [2024-11-09 10:48:14,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:48:14,815 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:14,815 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:14,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 10:48:14,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:14,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:14,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300630913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:14,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:14,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 10:48:14,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659887435] [2024-11-09 10:48:14,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:14,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 10:48:14,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:14,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 10:48:14,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:48:14,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:14,891 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) [2024-11-09 10:48:14,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:14,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:14,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:15,046 INFO L124 PetriNetUnfolderBase]: 108/199 cut-off events. [2024-11-09 10:48:15,047 INFO L125 PetriNetUnfolderBase]: For 598/598 co-relation queries the response was YES. [2024-11-09 10:48:15,048 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. [2024-11-09 10:48:15,049 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 41 selfloop transitions, 27 changer transitions 0/69 dead transitions. [2024-11-09 10:48:15,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 612 flow [2024-11-09 10:48:15,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 10:48:15,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 10:48:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2024-11-09 10:48:15,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-11-09 10:48:15,051 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 357 flow. Second operand 10 states and 91 transitions. [2024-11-09 10:48:15,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 612 flow [2024-11-09 10:48:15,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 582 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:15,056 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 422 flow [2024-11-09 10:48:15,057 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} [2024-11-09 10:48:15,057 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-11-09 10:48:15,058 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 422 flow [2024-11-09 10:48:15,058 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) [2024-11-09 10:48:15,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:15,071 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:15,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:15,274 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 [2024-11-09 10:48:15,275 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)] === [2024-11-09 10:48:15,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:15,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2070215271, now seen corresponding path program 4 times [2024-11-09 10:48:15,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:15,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209866429] [2024-11-09 10:48:15,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:15,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:15,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:15,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209866429] [2024-11-09 10:48:15,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209866429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:15,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:15,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:15,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981968066] [2024-11-09 10:48:15,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:15,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:15,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:15,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:15,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:15,334 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) [2024-11-09 10:48:15,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:15,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:15,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:15,409 INFO L124 PetriNetUnfolderBase]: 114/209 cut-off events. [2024-11-09 10:48:15,409 INFO L125 PetriNetUnfolderBase]: For 734/734 co-relation queries the response was YES. [2024-11-09 10:48:15,410 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. [2024-11-09 10:48:15,411 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 42 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-11-09 10:48:15,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 604 flow [2024-11-09 10:48:15,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:15,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-11-09 10:48:15,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:48:15,412 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 422 flow. Second operand 5 states and 50 transitions. [2024-11-09 10:48:15,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 604 flow [2024-11-09 10:48:15,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 534 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-09 10:48:15,417 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 395 flow [2024-11-09 10:48:15,417 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} [2024-11-09 10:48:15,417 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 38 predicate places. [2024-11-09 10:48:15,417 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 395 flow [2024-11-09 10:48:15,418 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) [2024-11-09 10:48:15,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:15,418 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:15,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:48:15,418 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)] === [2024-11-09 10:48:15,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:15,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1295731652, now seen corresponding path program 6 times [2024-11-09 10:48:15,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:15,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579284979] [2024-11-09 10:48:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:15,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:15,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:15,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579284979] [2024-11-09 10:48:15,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579284979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:15,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:15,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:15,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815592454] [2024-11-09 10:48:15,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:15,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:15,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:15,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:15,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:15,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:15,466 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) [2024-11-09 10:48:15,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:15,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:15,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:15,543 INFO L124 PetriNetUnfolderBase]: 110/197 cut-off events. [2024-11-09 10:48:15,543 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-11-09 10:48:15,544 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. [2024-11-09 10:48:15,545 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 32 selfloop transitions, 19 changer transitions 2/54 dead transitions. [2024-11-09 10:48:15,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 509 flow [2024-11-09 10:48:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-09 10:48:15,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-09 10:48:15,547 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 395 flow. Second operand 5 states and 47 transitions. [2024-11-09 10:48:15,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 509 flow [2024-11-09 10:48:15,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 473 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:15,551 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 378 flow [2024-11-09 10:48:15,551 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} [2024-11-09 10:48:15,552 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-11-09 10:48:15,552 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 378 flow [2024-11-09 10:48:15,552 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) [2024-11-09 10:48:15,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:15,552 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:15,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 10:48:15,553 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)] === [2024-11-09 10:48:15,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:15,553 INFO L85 PathProgramCache]: Analyzing trace with hash -350969669, now seen corresponding path program 5 times [2024-11-09 10:48:15,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:15,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663851032] [2024-11-09 10:48:15,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:15,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:15,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663851032] [2024-11-09 10:48:15,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663851032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210087189] [2024-11-09 10:48:15,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:48:15,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:15,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:15,630 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) [2024-11-09 10:48:15,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:48:15,687 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:15,688 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:15,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 10:48:15,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:15,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:15,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210087189] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:15,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:15,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 10:48:15,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218469917] [2024-11-09 10:48:15,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:15,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 10:48:15,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:15,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 10:48:15,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:48:15,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:15,752 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) [2024-11-09 10:48:15,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:15,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:15,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:15,882 INFO L124 PetriNetUnfolderBase]: 111/200 cut-off events. [2024-11-09 10:48:15,883 INFO L125 PetriNetUnfolderBase]: For 535/535 co-relation queries the response was YES. [2024-11-09 10:48:15,884 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. [2024-11-09 10:48:15,885 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 30 changer transitions 0/69 dead transitions. [2024-11-09 10:48:15,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 626 flow [2024-11-09 10:48:15,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 10:48:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 10:48:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 87 transitions. [2024-11-09 10:48:15,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-11-09 10:48:15,886 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 378 flow. Second operand 10 states and 87 transitions. [2024-11-09 10:48:15,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 626 flow [2024-11-09 10:48:15,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 572 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 10:48:15,890 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 437 flow [2024-11-09 10:48:15,890 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} [2024-11-09 10:48:15,891 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 42 predicate places. [2024-11-09 10:48:15,891 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 437 flow [2024-11-09 10:48:15,891 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) [2024-11-09 10:48:15,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:15,892 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:15,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:16,092 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 [2024-11-09 10:48:16,093 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)] === [2024-11-09 10:48:16,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:16,094 INFO L85 PathProgramCache]: Analyzing trace with hash -243034563, now seen corresponding path program 6 times [2024-11-09 10:48:16,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:16,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079377718] [2024-11-09 10:48:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:16,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:16,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:16,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079377718] [2024-11-09 10:48:16,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079377718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:16,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:16,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:48:16,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084842504] [2024-11-09 10:48:16,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:16,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:48:16,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:16,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:48:16,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:48:16,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:16,196 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) [2024-11-09 10:48:16,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:16,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:16,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:16,273 INFO L124 PetriNetUnfolderBase]: 104/184 cut-off events. [2024-11-09 10:48:16,273 INFO L125 PetriNetUnfolderBase]: For 551/551 co-relation queries the response was YES. [2024-11-09 10:48:16,274 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. [2024-11-09 10:48:16,276 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 37 selfloop transitions, 17 changer transitions 3/58 dead transitions. [2024-11-09 10:48:16,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 563 flow [2024-11-09 10:48:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:16,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-11-09 10:48:16,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-11-09 10:48:16,278 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 437 flow. Second operand 5 states and 47 transitions. [2024-11-09 10:48:16,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 563 flow [2024-11-09 10:48:16,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 473 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-11-09 10:48:16,282 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 362 flow [2024-11-09 10:48:16,283 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} [2024-11-09 10:48:16,283 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 39 predicate places. [2024-11-09 10:48:16,283 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 362 flow [2024-11-09 10:48:16,284 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) [2024-11-09 10:48:16,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:16,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:16,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 10:48:16,284 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)] === [2024-11-09 10:48:16,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:16,285 INFO L85 PathProgramCache]: Analyzing trace with hash -884107482, now seen corresponding path program 1 times [2024-11-09 10:48:16,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:16,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800514274] [2024-11-09 10:48:16,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:16,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:16,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:16,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800514274] [2024-11-09 10:48:16,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800514274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:16,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176156260] [2024-11-09 10:48:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:16,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:16,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:16,509 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) [2024-11-09 10:48:16,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:48:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:16,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:48:16,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:16,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:16,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176156260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:16,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:16,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 10:48:16,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031156390] [2024-11-09 10:48:16,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:16,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:16,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:16,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:16,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:16,853 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) [2024-11-09 10:48:16,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:16,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:16,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:17,071 INFO L124 PetriNetUnfolderBase]: 152/279 cut-off events. [2024-11-09 10:48:17,071 INFO L125 PetriNetUnfolderBase]: For 757/757 co-relation queries the response was YES. [2024-11-09 10:48:17,072 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. [2024-11-09 10:48:17,074 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 65 selfloop transitions, 19 changer transitions 4/89 dead transitions. [2024-11-09 10:48:17,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 755 flow [2024-11-09 10:48:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:48:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:48:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-11-09 10:48:17,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-09 10:48:17,075 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 362 flow. Second operand 7 states and 75 transitions. [2024-11-09 10:48:17,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 755 flow [2024-11-09 10:48:17,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 705 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:17,079 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 494 flow [2024-11-09 10:48:17,080 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} [2024-11-09 10:48:17,081 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 43 predicate places. [2024-11-09 10:48:17,081 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 494 flow [2024-11-09 10:48:17,081 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) [2024-11-09 10:48:17,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:17,082 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:17,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:17,285 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 [2024-11-09 10:48:17,286 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)] === [2024-11-09 10:48:17,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:17,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1058757058, now seen corresponding path program 2 times [2024-11-09 10:48:17,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:17,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827272075] [2024-11-09 10:48:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:17,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:17,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:17,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827272075] [2024-11-09 10:48:17,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827272075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:17,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326735683] [2024-11-09 10:48:17,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:17,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:17,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:17,480 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) [2024-11-09 10:48:17,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:48:17,545 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:17,545 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:17,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:48:17,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:17,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:17,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326735683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:17,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:17,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 10:48:17,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716128914] [2024-11-09 10:48:17,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:17,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:17,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:17,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:17,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:17,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:17,807 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) [2024-11-09 10:48:17,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:17,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:17,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:18,034 INFO L124 PetriNetUnfolderBase]: 150/271 cut-off events. [2024-11-09 10:48:18,035 INFO L125 PetriNetUnfolderBase]: For 885/885 co-relation queries the response was YES. [2024-11-09 10:48:18,036 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. [2024-11-09 10:48:18,038 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 61 selfloop transitions, 20 changer transitions 4/86 dead transitions. [2024-11-09 10:48:18,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 782 flow [2024-11-09 10:48:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:48:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:48:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-11-09 10:48:18,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:48:18,040 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 494 flow. Second operand 7 states and 70 transitions. [2024-11-09 10:48:18,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 782 flow [2024-11-09 10:48:18,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 734 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:18,047 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 564 flow [2024-11-09 10:48:18,047 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} [2024-11-09 10:48:18,048 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 48 predicate places. [2024-11-09 10:48:18,048 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 564 flow [2024-11-09 10:48:18,048 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) [2024-11-09 10:48:18,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:18,048 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:18,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 10:48:18,249 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 [2024-11-09 10:48:18,249 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)] === [2024-11-09 10:48:18,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:18,249 INFO L85 PathProgramCache]: Analyzing trace with hash -268386566, now seen corresponding path program 3 times [2024-11-09 10:48:18,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:18,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785346350] [2024-11-09 10:48:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:18,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:18,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:18,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785346350] [2024-11-09 10:48:18,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785346350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:18,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466628222] [2024-11-09 10:48:18,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:18,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:18,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:18,415 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) [2024-11-09 10:48:18,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:48:18,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 10:48:18,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:18,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:48:18,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:18,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:18,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466628222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:18,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:18,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 10:48:18,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313887447] [2024-11-09 10:48:18,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:18,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:18,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:18,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:18,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:18,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:18,735 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) [2024-11-09 10:48:18,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:18,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:18,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:18,920 INFO L124 PetriNetUnfolderBase]: 148/263 cut-off events. [2024-11-09 10:48:18,920 INFO L125 PetriNetUnfolderBase]: For 901/901 co-relation queries the response was YES. [2024-11-09 10:48:18,921 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. [2024-11-09 10:48:18,923 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 60 selfloop transitions, 21 changer transitions 4/86 dead transitions. [2024-11-09 10:48:18,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 816 flow [2024-11-09 10:48:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:48:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:48:18,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-11-09 10:48:18,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:48:18,924 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 564 flow. Second operand 7 states and 70 transitions. [2024-11-09 10:48:18,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 816 flow [2024-11-09 10:48:18,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 774 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-09 10:48:18,929 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 604 flow [2024-11-09 10:48:18,929 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} [2024-11-09 10:48:18,930 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 52 predicate places. [2024-11-09 10:48:18,930 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 604 flow [2024-11-09 10:48:18,930 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) [2024-11-09 10:48:18,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:18,930 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:18,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 10:48:19,134 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 [2024-11-09 10:48:19,135 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)] === [2024-11-09 10:48:19,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:19,135 INFO L85 PathProgramCache]: Analyzing trace with hash 465017658, now seen corresponding path program 4 times [2024-11-09 10:48:19,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:19,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443791687] [2024-11-09 10:48:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:19,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:19,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:19,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443791687] [2024-11-09 10:48:19,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443791687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:19,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122060959] [2024-11-09 10:48:19,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:19,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:19,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:19,325 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) [2024-11-09 10:48:19,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 10:48:19,390 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:19,390 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:19,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:48:19,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:19,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:19,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122060959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:19,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:19,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 10:48:19,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953960634] [2024-11-09 10:48:19,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:19,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:19,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:19,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:19,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:19,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:19,626 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) [2024-11-09 10:48:19,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:19,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:19,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:19,818 INFO L124 PetriNetUnfolderBase]: 173/306 cut-off events. [2024-11-09 10:48:19,819 INFO L125 PetriNetUnfolderBase]: For 1112/1112 co-relation queries the response was YES. [2024-11-09 10:48:19,820 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. [2024-11-09 10:48:19,821 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 70 selfloop transitions, 19 changer transitions 4/94 dead transitions. [2024-11-09 10:48:19,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 94 transitions, 925 flow [2024-11-09 10:48:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:48:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:48:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2024-11-09 10:48:19,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-11-09 10:48:19,823 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 604 flow. Second operand 7 states and 64 transitions. [2024-11-09 10:48:19,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 94 transitions, 925 flow [2024-11-09 10:48:19,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 94 transitions, 868 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-09 10:48:19,829 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 719 flow [2024-11-09 10:48:19,829 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} [2024-11-09 10:48:19,830 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 57 predicate places. [2024-11-09 10:48:19,830 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 719 flow [2024-11-09 10:48:19,830 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) [2024-11-09 10:48:19,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:19,830 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:19,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 10:48:20,034 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 [2024-11-09 10:48:20,035 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)] === [2024-11-09 10:48:20,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:20,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1335848292, now seen corresponding path program 5 times [2024-11-09 10:48:20,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:20,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738347948] [2024-11-09 10:48:20,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:20,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:20,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:20,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738347948] [2024-11-09 10:48:20,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738347948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:20,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692123496] [2024-11-09 10:48:20,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:48:20,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:20,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:20,246 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) [2024-11-09 10:48:20,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 10:48:20,313 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:48:20,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:20,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:48:20,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:20,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:20,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692123496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:20,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:20,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 10:48:20,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291970869] [2024-11-09 10:48:20,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:20,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:20,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:20,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:20,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:20,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:20,552 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) [2024-11-09 10:48:20,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:20,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:20,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:20,727 INFO L124 PetriNetUnfolderBase]: 185/331 cut-off events. [2024-11-09 10:48:20,728 INFO L125 PetriNetUnfolderBase]: For 1341/1341 co-relation queries the response was YES. [2024-11-09 10:48:20,729 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. [2024-11-09 10:48:20,731 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 77 selfloop transitions, 20 changer transitions 4/102 dead transitions. [2024-11-09 10:48:20,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 102 transitions, 1055 flow [2024-11-09 10:48:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:48:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:48:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-11-09 10:48:20,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-11-09 10:48:20,733 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 719 flow. Second operand 7 states and 69 transitions. [2024-11-09 10:48:20,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 102 transitions, 1055 flow [2024-11-09 10:48:20,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 102 transitions, 1006 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-09 10:48:20,742 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 790 flow [2024-11-09 10:48:20,743 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} [2024-11-09 10:48:20,744 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 63 predicate places. [2024-11-09 10:48:20,744 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 790 flow [2024-11-09 10:48:20,744 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) [2024-11-09 10:48:20,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:20,744 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:20,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 10:48:20,945 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 [2024-11-09 10:48:20,945 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)] === [2024-11-09 10:48:20,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:20,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1252731402, now seen corresponding path program 6 times [2024-11-09 10:48:20,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:20,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805918878] [2024-11-09 10:48:20,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:20,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:21,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805918878] [2024-11-09 10:48:21,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805918878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:21,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569952898] [2024-11-09 10:48:21,127 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:48:21,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:21,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:21,129 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) [2024-11-09 10:48:21,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 10:48:21,189 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:48:21,189 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:21,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:48:21,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:21,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:21,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569952898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:21,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:21,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 10:48:21,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196952875] [2024-11-09 10:48:21,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:21,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:21,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:21,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:21,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:21,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:21,444 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) [2024-11-09 10:48:21,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:21,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:21,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:21,629 INFO L124 PetriNetUnfolderBase]: 183/323 cut-off events. [2024-11-09 10:48:21,629 INFO L125 PetriNetUnfolderBase]: For 1616/1616 co-relation queries the response was YES. [2024-11-09 10:48:21,631 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. [2024-11-09 10:48:21,633 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 75 selfloop transitions, 21 changer transitions 4/101 dead transitions. [2024-11-09 10:48:21,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 101 transitions, 1078 flow [2024-11-09 10:48:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:48:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:48:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2024-11-09 10:48:21,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-11-09 10:48:21,634 INFO L175 Difference]: Start difference. First operand has 85 places, 86 transitions, 790 flow. Second operand 7 states and 67 transitions. [2024-11-09 10:48:21,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 101 transitions, 1078 flow [2024-11-09 10:48:21,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 101 transitions, 1006 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:21,643 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 816 flow [2024-11-09 10:48:21,643 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} [2024-11-09 10:48:21,644 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 68 predicate places. [2024-11-09 10:48:21,644 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 816 flow [2024-11-09 10:48:21,644 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) [2024-11-09 10:48:21,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:21,644 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:21,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 10:48:21,845 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 [2024-11-09 10:48:21,845 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)] === [2024-11-09 10:48:21,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:21,845 INFO L85 PathProgramCache]: Analyzing trace with hash -526255113, now seen corresponding path program 7 times [2024-11-09 10:48:21,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:21,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032283734] [2024-11-09 10:48:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:21,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:21,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:21,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032283734] [2024-11-09 10:48:21,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032283734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:21,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078109269] [2024-11-09 10:48:21,922 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:48:21,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:21,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:21,924 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) [2024-11-09 10:48:21,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 10:48:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:21,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:21,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:22,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:22,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078109269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:22,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:22,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 10:48:22,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200956917] [2024-11-09 10:48:22,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:22,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:48:22,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:22,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:48:22,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:48:22,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:22,079 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) [2024-11-09 10:48:22,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:22,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:22,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:22,274 INFO L124 PetriNetUnfolderBase]: 210/369 cut-off events. [2024-11-09 10:48:22,275 INFO L125 PetriNetUnfolderBase]: For 2177/2177 co-relation queries the response was YES. [2024-11-09 10:48:22,276 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. [2024-11-09 10:48:22,279 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 80 selfloop transitions, 50 changer transitions 0/131 dead transitions. [2024-11-09 10:48:22,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 131 transitions, 1433 flow [2024-11-09 10:48:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 10:48:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 10:48:22,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-11-09 10:48:22,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:48:22,281 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 816 flow. Second operand 10 states and 100 transitions. [2024-11-09 10:48:22,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 131 transitions, 1433 flow [2024-11-09 10:48:22,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 1366 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-09 10:48:22,291 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 1065 flow [2024-11-09 10:48:22,291 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} [2024-11-09 10:48:22,291 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 79 predicate places. [2024-11-09 10:48:22,291 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 1065 flow [2024-11-09 10:48:22,292 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) [2024-11-09 10:48:22,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:22,292 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:22,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:22,492 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 [2024-11-09 10:48:22,492 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)] === [2024-11-09 10:48:22,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:22,493 INFO L85 PathProgramCache]: Analyzing trace with hash 37067966, now seen corresponding path program 8 times [2024-11-09 10:48:22,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:22,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167658422] [2024-11-09 10:48:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:22,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:22,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:22,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167658422] [2024-11-09 10:48:22,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167658422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:22,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754776201] [2024-11-09 10:48:22,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:22,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:22,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:22,589 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) [2024-11-09 10:48:22,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 10:48:22,657 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:22,657 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:22,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:22,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:22,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:22,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754776201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:22,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:22,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 10:48:22,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461973073] [2024-11-09 10:48:22,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:22,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:48:22,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:22,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:48:22,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:48:22,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:22,730 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) [2024-11-09 10:48:22,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:22,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:22,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:22,859 INFO L124 PetriNetUnfolderBase]: 211/376 cut-off events. [2024-11-09 10:48:22,859 INFO L125 PetriNetUnfolderBase]: For 3117/3117 co-relation queries the response was YES. [2024-11-09 10:48:22,861 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. [2024-11-09 10:48:22,863 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 79 selfloop transitions, 34 changer transitions 9/123 dead transitions. [2024-11-09 10:48:22,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 123 transitions, 1508 flow [2024-11-09 10:48:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:48:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:48:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-11-09 10:48:22,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-09 10:48:22,864 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 1065 flow. Second operand 7 states and 72 transitions. [2024-11-09 10:48:22,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 123 transitions, 1508 flow [2024-11-09 10:48:22,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 123 transitions, 1421 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-11-09 10:48:22,877 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 1027 flow [2024-11-09 10:48:22,877 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} [2024-11-09 10:48:22,877 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 85 predicate places. [2024-11-09 10:48:22,877 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 1027 flow [2024-11-09 10:48:22,878 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) [2024-11-09 10:48:22,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:22,878 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:22,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:23,078 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 [2024-11-09 10:48:23,078 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)] === [2024-11-09 10:48:23,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:23,079 INFO L85 PathProgramCache]: Analyzing trace with hash 99726495, now seen corresponding path program 9 times [2024-11-09 10:48:23,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:23,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316472403] [2024-11-09 10:48:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:23,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:23,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:23,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316472403] [2024-11-09 10:48:23,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316472403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:23,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783351086] [2024-11-09 10:48:23,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:23,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:23,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:23,154 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) [2024-11-09 10:48:23,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 10:48:23,218 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:48:23,218 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:23,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:23,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:23,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:23,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783351086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:23,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:23,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 10:48:23,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759454406] [2024-11-09 10:48:23,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:23,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:23,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:23,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:23,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:23,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:23,313 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) [2024-11-09 10:48:23,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:23,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:23,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:23,584 INFO L124 PetriNetUnfolderBase]: 249/432 cut-off events. [2024-11-09 10:48:23,585 INFO L125 PetriNetUnfolderBase]: For 4351/4351 co-relation queries the response was YES. [2024-11-09 10:48:23,588 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. [2024-11-09 10:48:23,592 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 81 selfloop transitions, 64 changer transitions 0/146 dead transitions. [2024-11-09 10:48:23,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 146 transitions, 1797 flow [2024-11-09 10:48:23,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:48:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 10:48:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 126 transitions. [2024-11-09 10:48:23,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-09 10:48:23,594 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 1027 flow. Second operand 14 states and 126 transitions. [2024-11-09 10:48:23,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 146 transitions, 1797 flow [2024-11-09 10:48:23,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 146 transitions, 1719 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-09 10:48:23,608 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 1483 flow [2024-11-09 10:48:23,609 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} [2024-11-09 10:48:23,610 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 97 predicate places. [2024-11-09 10:48:23,610 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 1483 flow [2024-11-09 10:48:23,610 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) [2024-11-09 10:48:23,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:23,610 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:23,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 10:48:23,814 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 [2024-11-09 10:48:23,815 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)] === [2024-11-09 10:48:23,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:23,815 INFO L85 PathProgramCache]: Analyzing trace with hash 555431037, now seen corresponding path program 10 times [2024-11-09 10:48:23,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:23,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449985140] [2024-11-09 10:48:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:23,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:23,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:23,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449985140] [2024-11-09 10:48:23,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449985140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:23,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139710495] [2024-11-09 10:48:23,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:23,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:23,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:23,907 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) [2024-11-09 10:48:23,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 10:48:23,968 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:23,968 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:23,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:23,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:24,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:24,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139710495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:24,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:24,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:48:24,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95500237] [2024-11-09 10:48:24,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:24,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:24,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:24,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:24,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:24,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:24,055 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) [2024-11-09 10:48:24,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:24,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:24,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:24,366 INFO L124 PetriNetUnfolderBase]: 300/515 cut-off events. [2024-11-09 10:48:24,366 INFO L125 PetriNetUnfolderBase]: For 8634/8634 co-relation queries the response was YES. [2024-11-09 10:48:24,368 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. [2024-11-09 10:48:24,372 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 79 selfloop transitions, 94 changer transitions 0/174 dead transitions. [2024-11-09 10:48:24,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 174 transitions, 2495 flow [2024-11-09 10:48:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 10:48:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 10:48:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 143 transitions. [2024-11-09 10:48:24,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-11-09 10:48:24,374 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 1483 flow. Second operand 16 states and 143 transitions. [2024-11-09 10:48:24,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 174 transitions, 2495 flow [2024-11-09 10:48:24,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 174 transitions, 2211 flow, removed 133 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:24,397 INFO L231 Difference]: Finished difference. Result has 139 places, 146 transitions, 1984 flow [2024-11-09 10:48:24,397 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} [2024-11-09 10:48:24,398 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 117 predicate places. [2024-11-09 10:48:24,398 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 146 transitions, 1984 flow [2024-11-09 10:48:24,398 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) [2024-11-09 10:48:24,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:24,398 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:24,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 10:48:24,602 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 [2024-11-09 10:48:24,603 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)] === [2024-11-09 10:48:24,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:24,603 INFO L85 PathProgramCache]: Analyzing trace with hash 963285089, now seen corresponding path program 11 times [2024-11-09 10:48:24,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:24,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024141740] [2024-11-09 10:48:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:24,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:24,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:24,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024141740] [2024-11-09 10:48:24,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024141740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:24,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480340444] [2024-11-09 10:48:24,672 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:48:24,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:24,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:24,674 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) [2024-11-09 10:48:24,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 10:48:24,731 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:48:24,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:24,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:24,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:24,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:24,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480340444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:24,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:24,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:48:24,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791485230] [2024-11-09 10:48:24,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:24,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:24,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:24,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:24,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:24,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:24,797 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) [2024-11-09 10:48:24,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:24,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:24,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:25,083 INFO L124 PetriNetUnfolderBase]: 300/519 cut-off events. [2024-11-09 10:48:25,084 INFO L125 PetriNetUnfolderBase]: For 8615/8615 co-relation queries the response was YES. [2024-11-09 10:48:25,087 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. [2024-11-09 10:48:25,092 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 88 selfloop transitions, 79 changer transitions 2/170 dead transitions. [2024-11-09 10:48:25,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 170 transitions, 2569 flow [2024-11-09 10:48:25,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:48:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:48:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-11-09 10:48:25,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4346153846153846 [2024-11-09 10:48:25,094 INFO L175 Difference]: Start difference. First operand has 139 places, 146 transitions, 1984 flow. Second operand 13 states and 113 transitions. [2024-11-09 10:48:25,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 170 transitions, 2569 flow [2024-11-09 10:48:25,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 170 transitions, 2251 flow, removed 115 selfloop flow, removed 6 redundant places. [2024-11-09 10:48:25,134 INFO L231 Difference]: Finished difference. Result has 147 places, 146 transitions, 1836 flow [2024-11-09 10:48:25,134 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} [2024-11-09 10:48:25,135 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 125 predicate places. [2024-11-09 10:48:25,135 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 146 transitions, 1836 flow [2024-11-09 10:48:25,135 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) [2024-11-09 10:48:25,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:25,136 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:25,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 10:48:25,336 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 [2024-11-09 10:48:25,336 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)] === [2024-11-09 10:48:25,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1488894746, now seen corresponding path program 12 times [2024-11-09 10:48:25,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:25,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547945288] [2024-11-09 10:48:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:25,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:25,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:25,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547945288] [2024-11-09 10:48:25,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547945288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:25,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853914888] [2024-11-09 10:48:25,419 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:48:25,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:25,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:25,421 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) [2024-11-09 10:48:25,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 10:48:25,485 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 10:48:25,485 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:25,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:25,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:25,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:25,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853914888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:25,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:25,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:48:25,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850599030] [2024-11-09 10:48:25,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:25,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:25,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:25,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:25,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:25,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:25,575 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) [2024-11-09 10:48:25,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:25,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:25,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:25,866 INFO L124 PetriNetUnfolderBase]: 349/586 cut-off events. [2024-11-09 10:48:25,866 INFO L125 PetriNetUnfolderBase]: For 11161/11161 co-relation queries the response was YES. [2024-11-09 10:48:25,871 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. [2024-11-09 10:48:25,878 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 127 selfloop transitions, 73 changer transitions 0/201 dead transitions. [2024-11-09 10:48:25,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 201 transitions, 3033 flow [2024-11-09 10:48:25,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 10:48:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 10:48:25,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2024-11-09 10:48:25,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4323529411764706 [2024-11-09 10:48:25,880 INFO L175 Difference]: Start difference. First operand has 147 places, 146 transitions, 1836 flow. Second operand 17 states and 147 transitions. [2024-11-09 10:48:25,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 201 transitions, 3033 flow [2024-11-09 10:48:25,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 201 transitions, 2820 flow, removed 30 selfloop flow, removed 12 redundant places. [2024-11-09 10:48:25,921 INFO L231 Difference]: Finished difference. Result has 154 places, 177 transitions, 2505 flow [2024-11-09 10:48:25,921 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} [2024-11-09 10:48:25,922 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 132 predicate places. [2024-11-09 10:48:25,922 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 177 transitions, 2505 flow [2024-11-09 10:48:25,922 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) [2024-11-09 10:48:25,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:25,923 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:25,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:26,123 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 [2024-11-09 10:48:26,123 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)] === [2024-11-09 10:48:26,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:26,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2129379204, now seen corresponding path program 13 times [2024-11-09 10:48:26,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:26,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722738419] [2024-11-09 10:48:26,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:26,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:26,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:26,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722738419] [2024-11-09 10:48:26,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722738419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:26,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221656592] [2024-11-09 10:48:26,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:48:26,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:26,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:26,194 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) [2024-11-09 10:48:26,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 10:48:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:26,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:26,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:26,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:26,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:26,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221656592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:26,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:26,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 10:48:26,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014981149] [2024-11-09 10:48:26,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:26,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:26,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:26,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:26,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:26,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:26,347 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) [2024-11-09 10:48:26,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:26,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:26,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:26,588 INFO L124 PetriNetUnfolderBase]: 354/603 cut-off events. [2024-11-09 10:48:26,588 INFO L125 PetriNetUnfolderBase]: For 10676/10676 co-relation queries the response was YES. [2024-11-09 10:48:26,591 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. [2024-11-09 10:48:26,596 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 141 selfloop transitions, 52 changer transitions 6/200 dead transitions. [2024-11-09 10:48:26,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 200 transitions, 3078 flow [2024-11-09 10:48:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:48:26,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:48:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-11-09 10:48:26,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-09 10:48:26,597 INFO L175 Difference]: Start difference. First operand has 154 places, 177 transitions, 2505 flow. Second operand 11 states and 99 transitions. [2024-11-09 10:48:26,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 200 transitions, 3078 flow [2024-11-09 10:48:26,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 200 transitions, 2583 flow, removed 189 selfloop flow, removed 7 redundant places. [2024-11-09 10:48:26,643 INFO L231 Difference]: Finished difference. Result has 159 places, 176 transitions, 2125 flow [2024-11-09 10:48:26,643 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} [2024-11-09 10:48:26,644 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 137 predicate places. [2024-11-09 10:48:26,644 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 176 transitions, 2125 flow [2024-11-09 10:48:26,644 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) [2024-11-09 10:48:26,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:26,644 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:26,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:26,845 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 [2024-11-09 10:48:26,846 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)] === [2024-11-09 10:48:26,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:26,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1516747420, now seen corresponding path program 14 times [2024-11-09 10:48:26,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:26,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771199763] [2024-11-09 10:48:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:26,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:26,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:26,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771199763] [2024-11-09 10:48:26,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771199763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:26,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501465441] [2024-11-09 10:48:26,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:26,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:26,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:26,936 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) [2024-11-09 10:48:26,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 10:48:27,001 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:27,002 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:27,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:27,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:27,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:27,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501465441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:27,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:27,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:48:27,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952790771] [2024-11-09 10:48:27,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:27,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:27,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:27,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:27,071 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) [2024-11-09 10:48:27,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:27,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:27,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:27,317 INFO L124 PetriNetUnfolderBase]: 341/581 cut-off events. [2024-11-09 10:48:27,317 INFO L125 PetriNetUnfolderBase]: For 8499/8499 co-relation queries the response was YES. [2024-11-09 10:48:27,321 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. [2024-11-09 10:48:27,326 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 126 selfloop transitions, 64 changer transitions 4/195 dead transitions. [2024-11-09 10:48:27,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 195 transitions, 2639 flow [2024-11-09 10:48:27,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:48:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:48:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-11-09 10:48:27,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-11-09 10:48:27,327 INFO L175 Difference]: Start difference. First operand has 159 places, 176 transitions, 2125 flow. Second operand 12 states and 109 transitions. [2024-11-09 10:48:27,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 195 transitions, 2639 flow [2024-11-09 10:48:27,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 195 transitions, 2530 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-11-09 10:48:27,366 INFO L231 Difference]: Finished difference. Result has 161 places, 172 transitions, 2094 flow [2024-11-09 10:48:27,367 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} [2024-11-09 10:48:27,367 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 139 predicate places. [2024-11-09 10:48:27,367 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 172 transitions, 2094 flow [2024-11-09 10:48:27,368 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) [2024-11-09 10:48:27,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:27,368 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:27,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:27,568 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 [2024-11-09 10:48:27,569 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)] === [2024-11-09 10:48:27,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:27,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1057640249, now seen corresponding path program 15 times [2024-11-09 10:48:27,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:27,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790983966] [2024-11-09 10:48:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:27,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:27,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:27,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790983966] [2024-11-09 10:48:27,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790983966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:27,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855630338] [2024-11-09 10:48:27,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:27,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:27,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:27,646 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) [2024-11-09 10:48:27,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 10:48:27,707 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:48:27,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:27,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:27,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:27,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:27,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855630338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:27,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:27,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:48:27,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710674644] [2024-11-09 10:48:27,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:27,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:48:27,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:27,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:48:27,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:48:27,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:27,793 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) [2024-11-09 10:48:27,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:27,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:27,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:28,052 INFO L124 PetriNetUnfolderBase]: 390/650 cut-off events. [2024-11-09 10:48:28,053 INFO L125 PetriNetUnfolderBase]: For 11227/11227 co-relation queries the response was YES. [2024-11-09 10:48:28,055 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. [2024-11-09 10:48:28,059 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 103 selfloop transitions, 115 changer transitions 5/224 dead transitions. [2024-11-09 10:48:28,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 224 transitions, 3240 flow [2024-11-09 10:48:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 10:48:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 10:48:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 134 transitions. [2024-11-09 10:48:28,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-11-09 10:48:28,061 INFO L175 Difference]: Start difference. First operand has 161 places, 172 transitions, 2094 flow. Second operand 16 states and 134 transitions. [2024-11-09 10:48:28,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 224 transitions, 3240 flow [2024-11-09 10:48:28,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 224 transitions, 3030 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-11-09 10:48:28,106 INFO L231 Difference]: Finished difference. Result has 168 places, 197 transitions, 2739 flow [2024-11-09 10:48:28,107 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} [2024-11-09 10:48:28,108 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 146 predicate places. [2024-11-09 10:48:28,108 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 197 transitions, 2739 flow [2024-11-09 10:48:28,108 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) [2024-11-09 10:48:28,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:28,108 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:28,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 10:48:28,312 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 [2024-11-09 10:48:28,313 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)] === [2024-11-09 10:48:28,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:28,313 INFO L85 PathProgramCache]: Analyzing trace with hash -507151239, now seen corresponding path program 16 times [2024-11-09 10:48:28,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:28,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955034125] [2024-11-09 10:48:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:28,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:28,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:28,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955034125] [2024-11-09 10:48:28,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955034125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:28,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985082737] [2024-11-09 10:48:28,383 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:28,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:28,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:28,385 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) [2024-11-09 10:48:28,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 10:48:28,450 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:28,450 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:28,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:28,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:28,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:28,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985082737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:28,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:28,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 10:48:28,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994643376] [2024-11-09 10:48:28,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:28,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:28,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:28,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:28,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:28,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:28,556 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) [2024-11-09 10:48:28,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:28,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:28,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:28,817 INFO L124 PetriNetUnfolderBase]: 488/802 cut-off events. [2024-11-09 10:48:28,818 INFO L125 PetriNetUnfolderBase]: For 17665/17665 co-relation queries the response was YES. [2024-11-09 10:48:28,822 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. [2024-11-09 10:48:28,827 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 102 selfloop transitions, 171 changer transitions 0/274 dead transitions. [2024-11-09 10:48:28,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 274 transitions, 4296 flow [2024-11-09 10:48:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 10:48:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 10:48:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 149 transitions. [2024-11-09 10:48:28,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43823529411764706 [2024-11-09 10:48:28,829 INFO L175 Difference]: Start difference. First operand has 168 places, 197 transitions, 2739 flow. Second operand 17 states and 149 transitions. [2024-11-09 10:48:28,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 274 transitions, 4296 flow [2024-11-09 10:48:28,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 274 transitions, 3887 flow, removed 157 selfloop flow, removed 8 redundant places. [2024-11-09 10:48:28,908 INFO L231 Difference]: Finished difference. Result has 178 places, 248 transitions, 3741 flow [2024-11-09 10:48:28,908 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} [2024-11-09 10:48:28,909 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 156 predicate places. [2024-11-09 10:48:28,909 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 248 transitions, 3741 flow [2024-11-09 10:48:28,910 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) [2024-11-09 10:48:28,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:28,910 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:28,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:29,114 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 [2024-11-09 10:48:29,115 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)] === [2024-11-09 10:48:29,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:29,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1889593665, now seen corresponding path program 17 times [2024-11-09 10:48:29,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:29,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817959429] [2024-11-09 10:48:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:29,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:29,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:29,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817959429] [2024-11-09 10:48:29,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817959429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:29,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578851950] [2024-11-09 10:48:29,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:48:29,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:29,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:29,190 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) [2024-11-09 10:48:29,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 10:48:29,256 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:29,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:29,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:29,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:29,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:29,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578851950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:29,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:29,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:48:29,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694938553] [2024-11-09 10:48:29,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:29,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:48:29,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:29,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:48:29,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:48:29,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:29,358 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) [2024-11-09 10:48:29,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:29,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:29,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:29,826 INFO L124 PetriNetUnfolderBase]: 585/967 cut-off events. [2024-11-09 10:48:29,827 INFO L125 PetriNetUnfolderBase]: For 17412/17412 co-relation queries the response was YES. [2024-11-09 10:48:29,832 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. [2024-11-09 10:48:29,838 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 164 selfloop transitions, 169 changer transitions 0/334 dead transitions. [2024-11-09 10:48:29,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 334 transitions, 5456 flow [2024-11-09 10:48:29,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 10:48:29,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 10:48:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 191 transitions. [2024-11-09 10:48:29,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4152173913043478 [2024-11-09 10:48:29,840 INFO L175 Difference]: Start difference. First operand has 178 places, 248 transitions, 3741 flow. Second operand 23 states and 191 transitions. [2024-11-09 10:48:29,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 334 transitions, 5456 flow [2024-11-09 10:48:29,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 334 transitions, 5065 flow, removed 179 selfloop flow, removed 4 redundant places. [2024-11-09 10:48:29,914 INFO L231 Difference]: Finished difference. Result has 204 places, 298 transitions, 4699 flow [2024-11-09 10:48:29,915 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} [2024-11-09 10:48:29,915 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 182 predicate places. [2024-11-09 10:48:29,915 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 298 transitions, 4699 flow [2024-11-09 10:48:29,915 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) [2024-11-09 10:48:29,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:29,916 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:29,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 10:48:30,116 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 [2024-11-09 10:48:30,116 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)] === [2024-11-09 10:48:30,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1345896383, now seen corresponding path program 18 times [2024-11-09 10:48:30,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:30,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150478581] [2024-11-09 10:48:30,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:30,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:30,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:30,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150478581] [2024-11-09 10:48:30,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150478581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:30,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968982550] [2024-11-09 10:48:30,198 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:48:30,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:30,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:30,200 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) [2024-11-09 10:48:30,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 10:48:30,281 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:48:30,282 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:30,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:30,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:30,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:30,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968982550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:30,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:30,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:48:30,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816881310] [2024-11-09 10:48:30,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:30,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:48:30,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:30,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:48:30,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:48:30,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:30,378 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) [2024-11-09 10:48:30,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:30,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:30,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:30,817 INFO L124 PetriNetUnfolderBase]: 630/1038 cut-off events. [2024-11-09 10:48:30,817 INFO L125 PetriNetUnfolderBase]: For 23284/23284 co-relation queries the response was YES. [2024-11-09 10:48:30,823 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. [2024-11-09 10:48:30,830 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 291 selfloop transitions, 59 changer transitions 0/351 dead transitions. [2024-11-09 10:48:30,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 351 transitions, 6344 flow [2024-11-09 10:48:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 10:48:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 10:48:30,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 164 transitions. [2024-11-09 10:48:30,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-11-09 10:48:30,831 INFO L175 Difference]: Start difference. First operand has 204 places, 298 transitions, 4699 flow. Second operand 19 states and 164 transitions. [2024-11-09 10:48:30,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 351 transitions, 6344 flow [2024-11-09 10:48:30,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 351 transitions, 6107 flow, removed 76 selfloop flow, removed 10 redundant places. [2024-11-09 10:48:30,902 INFO L231 Difference]: Finished difference. Result has 224 places, 323 transitions, 5419 flow [2024-11-09 10:48:30,902 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} [2024-11-09 10:48:30,903 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 202 predicate places. [2024-11-09 10:48:30,903 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 323 transitions, 5419 flow [2024-11-09 10:48:30,903 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) [2024-11-09 10:48:30,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:30,903 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:30,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:31,103 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 [2024-11-09 10:48:31,104 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)] === [2024-11-09 10:48:31,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:31,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1274077767, now seen corresponding path program 19 times [2024-11-09 10:48:31,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:31,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15579025] [2024-11-09 10:48:31,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:31,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:31,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:31,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15579025] [2024-11-09 10:48:31,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15579025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:31,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580133659] [2024-11-09 10:48:31,174 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:48:31,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:31,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:31,176 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) [2024-11-09 10:48:31,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 10:48:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:31,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:31,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:31,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:31,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580133659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:31,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:31,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 10:48:31,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867843902] [2024-11-09 10:48:31,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:31,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:31,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:31,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:31,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:31,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:31,316 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) [2024-11-09 10:48:31,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:31,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:31,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:31,695 INFO L124 PetriNetUnfolderBase]: 639/1053 cut-off events. [2024-11-09 10:48:31,695 INFO L125 PetriNetUnfolderBase]: For 25030/25030 co-relation queries the response was YES. [2024-11-09 10:48:31,702 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. [2024-11-09 10:48:31,709 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 283 selfloop transitions, 56 changer transitions 2/342 dead transitions. [2024-11-09 10:48:31,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 342 transitions, 6487 flow [2024-11-09 10:48:31,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:48:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:48:31,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 94 transitions. [2024-11-09 10:48:31,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-11-09 10:48:31,710 INFO L175 Difference]: Start difference. First operand has 224 places, 323 transitions, 5419 flow. Second operand 11 states and 94 transitions. [2024-11-09 10:48:31,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 342 transitions, 6487 flow [2024-11-09 10:48:31,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 342 transitions, 5746 flow, removed 350 selfloop flow, removed 8 redundant places. [2024-11-09 10:48:31,832 INFO L231 Difference]: Finished difference. Result has 227 places, 326 transitions, 4963 flow [2024-11-09 10:48:31,833 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} [2024-11-09 10:48:31,834 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 205 predicate places. [2024-11-09 10:48:31,834 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 326 transitions, 4963 flow [2024-11-09 10:48:31,835 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) [2024-11-09 10:48:31,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:31,835 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:31,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:32,035 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 [2024-11-09 10:48:32,036 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)] === [2024-11-09 10:48:32,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:32,036 INFO L85 PathProgramCache]: Analyzing trace with hash -840836223, now seen corresponding path program 20 times [2024-11-09 10:48:32,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:32,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103527396] [2024-11-09 10:48:32,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:32,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103527396] [2024-11-09 10:48:32,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103527396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:32,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944420376] [2024-11-09 10:48:32,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:32,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:32,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:32,110 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) [2024-11-09 10:48:32,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 10:48:32,174 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:32,175 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:32,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:32,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:32,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:32,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944420376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:32,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:32,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 10:48:32,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942356131] [2024-11-09 10:48:32,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:32,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:32,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:32,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:32,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:32,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:32,270 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) [2024-11-09 10:48:32,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:32,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:32,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:32,619 INFO L124 PetriNetUnfolderBase]: 684/1120 cut-off events. [2024-11-09 10:48:32,619 INFO L125 PetriNetUnfolderBase]: For 30351/30351 co-relation queries the response was YES. [2024-11-09 10:48:32,623 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. [2024-11-09 10:48:32,630 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 288 selfloop transitions, 85 changer transitions 0/374 dead transitions. [2024-11-09 10:48:32,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 374 transitions, 6582 flow [2024-11-09 10:48:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 10:48:32,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 10:48:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 138 transitions. [2024-11-09 10:48:32,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-09 10:48:32,632 INFO L175 Difference]: Start difference. First operand has 227 places, 326 transitions, 4963 flow. Second operand 16 states and 138 transitions. [2024-11-09 10:48:32,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 374 transitions, 6582 flow [2024-11-09 10:48:32,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 374 transitions, 6473 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-09 10:48:32,766 INFO L231 Difference]: Finished difference. Result has 241 places, 351 transitions, 5764 flow [2024-11-09 10:48:32,767 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} [2024-11-09 10:48:32,767 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 219 predicate places. [2024-11-09 10:48:32,768 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 351 transitions, 5764 flow [2024-11-09 10:48:32,768 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) [2024-11-09 10:48:32,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:32,768 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:32,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 10:48:32,968 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 [2024-11-09 10:48:32,968 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)] === [2024-11-09 10:48:32,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1524064107, now seen corresponding path program 21 times [2024-11-09 10:48:32,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:32,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041866990] [2024-11-09 10:48:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:32,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:33,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:33,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041866990] [2024-11-09 10:48:33,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041866990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:33,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983345867] [2024-11-09 10:48:33,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:33,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:33,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:33,034 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) [2024-11-09 10:48:33,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 10:48:33,096 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:48:33,097 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:33,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:33,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:33,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:48:33,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983345867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:33,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:33,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 10:48:33,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293990939] [2024-11-09 10:48:33,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:33,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:33,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:33,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:33,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:33,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:33,188 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) [2024-11-09 10:48:33,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:33,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:33,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:33,536 INFO L124 PetriNetUnfolderBase]: 684/1124 cut-off events. [2024-11-09 10:48:33,536 INFO L125 PetriNetUnfolderBase]: For 31832/31832 co-relation queries the response was YES. [2024-11-09 10:48:33,544 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. [2024-11-09 10:48:33,554 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 290 selfloop transitions, 73 changer transitions 2/366 dead transitions. [2024-11-09 10:48:33,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 366 transitions, 6753 flow [2024-11-09 10:48:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:48:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:48:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-11-09 10:48:33,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-11-09 10:48:33,556 INFO L175 Difference]: Start difference. First operand has 241 places, 351 transitions, 5764 flow. Second operand 11 states and 95 transitions. [2024-11-09 10:48:33,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 366 transitions, 6753 flow [2024-11-09 10:48:33,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 366 transitions, 6274 flow, removed 214 selfloop flow, removed 10 redundant places. [2024-11-09 10:48:33,759 INFO L231 Difference]: Finished difference. Result has 243 places, 351 transitions, 5458 flow [2024-11-09 10:48:33,759 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} [2024-11-09 10:48:33,760 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 221 predicate places. [2024-11-09 10:48:33,760 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 351 transitions, 5458 flow [2024-11-09 10:48:33,760 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) [2024-11-09 10:48:33,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:33,760 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:33,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:33,961 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 [2024-11-09 10:48:33,962 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)] === [2024-11-09 10:48:33,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash -18594597, now seen corresponding path program 22 times [2024-11-09 10:48:33,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:33,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525775495] [2024-11-09 10:48:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:33,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:34,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:34,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525775495] [2024-11-09 10:48:34,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525775495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:34,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235915384] [2024-11-09 10:48:34,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:34,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:34,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:34,026 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) [2024-11-09 10:48:34,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 10:48:34,090 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:34,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:34,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:34,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:34,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:34,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235915384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:34,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:34,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:48:34,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924528482] [2024-11-09 10:48:34,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:34,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:34,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:34,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:34,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:34,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:34,178 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) [2024-11-09 10:48:34,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:34,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:34,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:34,526 INFO L124 PetriNetUnfolderBase]: 718/1172 cut-off events. [2024-11-09 10:48:34,526 INFO L125 PetriNetUnfolderBase]: For 36572/36572 co-relation queries the response was YES. [2024-11-09 10:48:34,534 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. [2024-11-09 10:48:34,543 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 228 selfloop transitions, 167 changer transitions 0/396 dead transitions. [2024-11-09 10:48:34,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 396 transitions, 7190 flow [2024-11-09 10:48:34,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 10:48:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 10:48:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 149 transitions. [2024-11-09 10:48:34,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43823529411764706 [2024-11-09 10:48:34,544 INFO L175 Difference]: Start difference. First operand has 243 places, 351 transitions, 5458 flow. Second operand 17 states and 149 transitions. [2024-11-09 10:48:34,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 396 transitions, 7190 flow [2024-11-09 10:48:34,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 396 transitions, 7030 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-09 10:48:34,706 INFO L231 Difference]: Finished difference. Result has 254 places, 369 transitions, 6424 flow [2024-11-09 10:48:34,706 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} [2024-11-09 10:48:34,707 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 232 predicate places. [2024-11-09 10:48:34,707 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 369 transitions, 6424 flow [2024-11-09 10:48:34,707 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) [2024-11-09 10:48:34,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:34,707 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:34,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-09 10:48:34,909 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 [2024-11-09 10:48:34,910 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)] === [2024-11-09 10:48:34,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:34,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1624324261, now seen corresponding path program 23 times [2024-11-09 10:48:34,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:34,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342742288] [2024-11-09 10:48:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:34,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:35,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:35,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342742288] [2024-11-09 10:48:35,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342742288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:35,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423401041] [2024-11-09 10:48:35,022 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:48:35,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:35,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:35,025 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) [2024-11-09 10:48:35,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 10:48:35,103 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:35,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:35,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:35,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:35,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:35,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423401041] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:35,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:35,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:48:35,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576081732] [2024-11-09 10:48:35,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:35,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:48:35,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:35,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:48:35,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:48:35,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:35,221 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) [2024-11-09 10:48:35,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:35,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:35,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:35,701 INFO L124 PetriNetUnfolderBase]: 751/1223 cut-off events. [2024-11-09 10:48:35,701 INFO L125 PetriNetUnfolderBase]: For 41497/41497 co-relation queries the response was YES. [2024-11-09 10:48:35,710 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. [2024-11-09 10:48:35,719 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 320 selfloop transitions, 80 changer transitions 4/405 dead transitions. [2024-11-09 10:48:35,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 405 transitions, 7889 flow [2024-11-09 10:48:35,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:48:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 10:48:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 115 transitions. [2024-11-09 10:48:35,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-11-09 10:48:35,721 INFO L175 Difference]: Start difference. First operand has 254 places, 369 transitions, 6424 flow. Second operand 14 states and 115 transitions. [2024-11-09 10:48:35,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 405 transitions, 7889 flow [2024-11-09 10:48:35,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 405 transitions, 7373 flow, removed 227 selfloop flow, removed 12 redundant places. [2024-11-09 10:48:35,903 INFO L231 Difference]: Finished difference. Result has 260 places, 385 transitions, 6514 flow [2024-11-09 10:48:35,903 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} [2024-11-09 10:48:35,904 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 238 predicate places. [2024-11-09 10:48:35,904 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 385 transitions, 6514 flow [2024-11-09 10:48:35,905 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) [2024-11-09 10:48:35,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:35,905 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:35,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:36,105 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 [2024-11-09 10:48:36,107 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)] === [2024-11-09 10:48:36,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:36,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1446677544, now seen corresponding path program 24 times [2024-11-09 10:48:36,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:36,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017572371] [2024-11-09 10:48:36,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:36,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:36,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:36,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017572371] [2024-11-09 10:48:36,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017572371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:36,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939800804] [2024-11-09 10:48:36,180 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:48:36,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:36,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:36,182 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) [2024-11-09 10:48:36,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 10:48:36,237 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:48:36,237 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:36,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:36,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:36,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:36,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:36,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939800804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:36,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:36,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:48:36,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284608924] [2024-11-09 10:48:36,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:36,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:48:36,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:48:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:48:36,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:36,310 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) [2024-11-09 10:48:36,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:36,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:36,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:36,736 INFO L124 PetriNetUnfolderBase]: 831/1336 cut-off events. [2024-11-09 10:48:36,736 INFO L125 PetriNetUnfolderBase]: For 49930/49930 co-relation queries the response was YES. [2024-11-09 10:48:36,744 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. [2024-11-09 10:48:36,751 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 321 selfloop transitions, 139 changer transitions 5/466 dead transitions. [2024-11-09 10:48:36,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 466 transitions, 9083 flow [2024-11-09 10:48:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 10:48:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 10:48:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2024-11-09 10:48:36,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4323529411764706 [2024-11-09 10:48:36,753 INFO L175 Difference]: Start difference. First operand has 260 places, 385 transitions, 6514 flow. Second operand 17 states and 147 transitions. [2024-11-09 10:48:36,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 466 transitions, 9083 flow [2024-11-09 10:48:36,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 466 transitions, 8904 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-11-09 10:48:36,937 INFO L231 Difference]: Finished difference. Result has 272 places, 427 transitions, 7950 flow [2024-11-09 10:48:36,937 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} [2024-11-09 10:48:36,937 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 250 predicate places. [2024-11-09 10:48:36,937 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 427 transitions, 7950 flow [2024-11-09 10:48:36,938 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) [2024-11-09 10:48:36,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:36,938 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:36,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-09 10:48:37,138 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 [2024-11-09 10:48:37,138 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)] === [2024-11-09 10:48:37,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1643507096, now seen corresponding path program 25 times [2024-11-09 10:48:37,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:37,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165796851] [2024-11-09 10:48:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:37,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:37,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:37,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165796851] [2024-11-09 10:48:37,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165796851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:37,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608411270] [2024-11-09 10:48:37,209 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:48:37,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:37,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:37,211 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) [2024-11-09 10:48:37,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 10:48:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:37,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:37,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:37,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:37,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608411270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:37,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:37,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:48:37,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993809840] [2024-11-09 10:48:37,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:37,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:48:37,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:48:37,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:48:37,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:37,385 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) [2024-11-09 10:48:37,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:37,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:37,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:38,010 INFO L124 PetriNetUnfolderBase]: 888/1422 cut-off events. [2024-11-09 10:48:38,011 INFO L125 PetriNetUnfolderBase]: For 60989/60989 co-relation queries the response was YES. [2024-11-09 10:48:38,020 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. [2024-11-09 10:48:38,027 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 352 selfloop transitions, 142 changer transitions 0/495 dead transitions. [2024-11-09 10:48:38,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 495 transitions, 10486 flow [2024-11-09 10:48:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 10:48:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 10:48:38,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 190 transitions. [2024-11-09 10:48:38,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2024-11-09 10:48:38,029 INFO L175 Difference]: Start difference. First operand has 272 places, 427 transitions, 7950 flow. Second operand 23 states and 190 transitions. [2024-11-09 10:48:38,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 495 transitions, 10486 flow [2024-11-09 10:48:38,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 495 transitions, 9152 flow, removed 601 selfloop flow, removed 5 redundant places. [2024-11-09 10:48:38,213 INFO L231 Difference]: Finished difference. Result has 297 places, 465 transitions, 8265 flow [2024-11-09 10:48:38,213 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} [2024-11-09 10:48:38,214 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 275 predicate places. [2024-11-09 10:48:38,214 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 465 transitions, 8265 flow [2024-11-09 10:48:38,214 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) [2024-11-09 10:48:38,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:38,214 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:38,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:38,415 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 [2024-11-09 10:48:38,415 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)] === [2024-11-09 10:48:38,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:38,416 INFO L85 PathProgramCache]: Analyzing trace with hash 571037951, now seen corresponding path program 26 times [2024-11-09 10:48:38,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:38,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424350720] [2024-11-09 10:48:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:38,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:38,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:38,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424350720] [2024-11-09 10:48:38,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424350720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:38,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530088335] [2024-11-09 10:48:38,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:38,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:38,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:38,485 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) [2024-11-09 10:48:38,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-09 10:48:38,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:38,548 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:38,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:38,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:38,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:38,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530088335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:38,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:38,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 10:48:38,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803063854] [2024-11-09 10:48:38,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:38,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:48:38,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:38,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:48:38,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:48:38,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:38,609 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) [2024-11-09 10:48:38,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:38,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:38,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:39,063 INFO L124 PetriNetUnfolderBase]: 890/1436 cut-off events. [2024-11-09 10:48:39,063 INFO L125 PetriNetUnfolderBase]: For 52317/52317 co-relation queries the response was YES. [2024-11-09 10:48:39,074 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. [2024-11-09 10:48:39,080 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 376 selfloop transitions, 100 changer transitions 5/482 dead transitions. [2024-11-09 10:48:39,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 482 transitions, 9540 flow [2024-11-09 10:48:39,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:48:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:48:39,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-11-09 10:48:39,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-11-09 10:48:39,081 INFO L175 Difference]: Start difference. First operand has 297 places, 465 transitions, 8265 flow. Second operand 7 states and 66 transitions. [2024-11-09 10:48:39,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 482 transitions, 9540 flow [2024-11-09 10:48:39,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 482 transitions, 9106 flow, removed 191 selfloop flow, removed 7 redundant places. [2024-11-09 10:48:39,279 INFO L231 Difference]: Finished difference. Result has 299 places, 464 transitions, 8023 flow [2024-11-09 10:48:39,279 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} [2024-11-09 10:48:39,279 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 277 predicate places. [2024-11-09 10:48:39,279 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 464 transitions, 8023 flow [2024-11-09 10:48:39,280 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) [2024-11-09 10:48:39,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:39,280 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:39,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:39,480 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 [2024-11-09 10:48:39,480 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)] === [2024-11-09 10:48:39,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:39,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2135413233, now seen corresponding path program 27 times [2024-11-09 10:48:39,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:39,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484190964] [2024-11-09 10:48:39,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:39,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:39,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:39,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484190964] [2024-11-09 10:48:39,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484190964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:39,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397749327] [2024-11-09 10:48:39,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:39,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:39,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:39,546 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) [2024-11-09 10:48:39,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-09 10:48:39,598 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:48:39,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:39,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:39,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:39,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:39,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397749327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:39,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:39,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 10:48:39,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430763541] [2024-11-09 10:48:39,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:39,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:39,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:39,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:39,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:39,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:39,659 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) [2024-11-09 10:48:39,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:39,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:39,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:40,061 INFO L124 PetriNetUnfolderBase]: 883/1423 cut-off events. [2024-11-09 10:48:40,061 INFO L125 PetriNetUnfolderBase]: For 50714/50714 co-relation queries the response was YES. [2024-11-09 10:48:40,068 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. [2024-11-09 10:48:40,073 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 360 selfloop transitions, 116 changer transitions 3/480 dead transitions. [2024-11-09 10:48:40,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 480 transitions, 9316 flow [2024-11-09 10:48:40,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:48:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:48:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 93 transitions. [2024-11-09 10:48:40,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-11-09 10:48:40,074 INFO L175 Difference]: Start difference. First operand has 299 places, 464 transitions, 8023 flow. Second operand 11 states and 93 transitions. [2024-11-09 10:48:40,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 480 transitions, 9316 flow [2024-11-09 10:48:40,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 480 transitions, 9112 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-09 10:48:40,264 INFO L231 Difference]: Finished difference. Result has 303 places, 462 transitions, 8053 flow [2024-11-09 10:48:40,264 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} [2024-11-09 10:48:40,264 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 281 predicate places. [2024-11-09 10:48:40,264 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 462 transitions, 8053 flow [2024-11-09 10:48:40,265 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) [2024-11-09 10:48:40,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:40,265 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:40,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:40,465 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 [2024-11-09 10:48:40,465 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)] === [2024-11-09 10:48:40,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:40,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1358263634, now seen corresponding path program 28 times [2024-11-09 10:48:40,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:40,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902700015] [2024-11-09 10:48:40,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:40,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:40,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:40,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902700015] [2024-11-09 10:48:40,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902700015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:40,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658908273] [2024-11-09 10:48:40,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:40,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:40,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:40,537 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) [2024-11-09 10:48:40,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 10:48:40,590 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:40,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:40,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:40,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:40,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:40,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658908273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:40,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:40,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 10:48:40,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390178967] [2024-11-09 10:48:40,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:40,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:40,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:40,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:40,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:40,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:40,658 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) [2024-11-09 10:48:40,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:40,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:40,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:41,195 INFO L124 PetriNetUnfolderBase]: 920/1482 cut-off events. [2024-11-09 10:48:41,196 INFO L125 PetriNetUnfolderBase]: For 53450/53450 co-relation queries the response was YES. [2024-11-09 10:48:41,205 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. [2024-11-09 10:48:41,213 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 380 selfloop transitions, 125 changer transitions 0/506 dead transitions. [2024-11-09 10:48:41,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 506 transitions, 9634 flow [2024-11-09 10:48:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:48:41,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 10:48:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 115 transitions. [2024-11-09 10:48:41,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-11-09 10:48:41,215 INFO L175 Difference]: Start difference. First operand has 303 places, 462 transitions, 8053 flow. Second operand 14 states and 115 transitions. [2024-11-09 10:48:41,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 506 transitions, 9634 flow [2024-11-09 10:48:41,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 506 transitions, 9376 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-11-09 10:48:41,444 INFO L231 Difference]: Finished difference. Result has 311 places, 484 transitions, 8362 flow [2024-11-09 10:48:41,444 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} [2024-11-09 10:48:41,445 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 289 predicate places. [2024-11-09 10:48:41,445 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 484 transitions, 8362 flow [2024-11-09 10:48:41,445 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) [2024-11-09 10:48:41,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:41,445 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:41,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-09 10:48:41,645 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 [2024-11-09 10:48:41,646 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)] === [2024-11-09 10:48:41,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:41,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1613823300, now seen corresponding path program 29 times [2024-11-09 10:48:41,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:41,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864504826] [2024-11-09 10:48:41,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:41,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:41,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:41,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864504826] [2024-11-09 10:48:41,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864504826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:41,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319060939] [2024-11-09 10:48:41,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:48:41,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:41,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:41,724 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) [2024-11-09 10:48:41,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-09 10:48:41,777 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:48:41,777 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:41,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:41,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:41,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:41,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319060939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:41,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:41,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 10:48:41,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201350939] [2024-11-09 10:48:41,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:41,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:41,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:41,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:41,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:41,840 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) [2024-11-09 10:48:41,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:41,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:41,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:42,279 INFO L124 PetriNetUnfolderBase]: 921/1489 cut-off events. [2024-11-09 10:48:42,279 INFO L125 PetriNetUnfolderBase]: For 53457/53457 co-relation queries the response was YES. [2024-11-09 10:48:42,286 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. [2024-11-09 10:48:42,291 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 367 selfloop transitions, 138 changer transitions 3/509 dead transitions. [2024-11-09 10:48:42,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 509 transitions, 9763 flow [2024-11-09 10:48:42,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:48:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 10:48:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 121 transitions. [2024-11-09 10:48:42,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-11-09 10:48:42,293 INFO L175 Difference]: Start difference. First operand has 311 places, 484 transitions, 8362 flow. Second operand 14 states and 121 transitions. [2024-11-09 10:48:42,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 509 transitions, 9763 flow [2024-11-09 10:48:42,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 509 transitions, 9611 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-11-09 10:48:42,481 INFO L231 Difference]: Finished difference. Result has 321 places, 484 transitions, 8474 flow [2024-11-09 10:48:42,481 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} [2024-11-09 10:48:42,481 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 299 predicate places. [2024-11-09 10:48:42,482 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 484 transitions, 8474 flow [2024-11-09 10:48:42,482 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) [2024-11-09 10:48:42,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:42,482 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:42,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:42,682 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 [2024-11-09 10:48:42,682 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)] === [2024-11-09 10:48:42,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:42,683 INFO L85 PathProgramCache]: Analyzing trace with hash -438573290, now seen corresponding path program 30 times [2024-11-09 10:48:42,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:42,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099169424] [2024-11-09 10:48:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:42,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:42,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:42,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099169424] [2024-11-09 10:48:42,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099169424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:42,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400670343] [2024-11-09 10:48:42,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:48:42,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:42,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:42,751 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) [2024-11-09 10:48:42,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-09 10:48:42,814 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:48:42,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:42,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:42,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:42,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:42,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400670343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:42,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:42,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 10:48:42,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58644490] [2024-11-09 10:48:42,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:42,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:48:42,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:42,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:48:42,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:48:42,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:42,886 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) [2024-11-09 10:48:42,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:42,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:42,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:43,289 INFO L124 PetriNetUnfolderBase]: 966/1562 cut-off events. [2024-11-09 10:48:43,290 INFO L125 PetriNetUnfolderBase]: For 56520/56520 co-relation queries the response was YES. [2024-11-09 10:48:43,300 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. [2024-11-09 10:48:43,307 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 335 selfloop transitions, 199 changer transitions 0/535 dead transitions. [2024-11-09 10:48:43,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 535 transitions, 10451 flow [2024-11-09 10:48:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 10:48:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 10:48:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-11-09 10:48:43,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.465 [2024-11-09 10:48:43,308 INFO L175 Difference]: Start difference. First operand has 321 places, 484 transitions, 8474 flow. Second operand 10 states and 93 transitions. [2024-11-09 10:48:43,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 535 transitions, 10451 flow [2024-11-09 10:48:43,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 535 transitions, 10295 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-11-09 10:48:43,572 INFO L231 Difference]: Finished difference. Result has 324 places, 507 transitions, 9191 flow [2024-11-09 10:48:43,573 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} [2024-11-09 10:48:43,573 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 302 predicate places. [2024-11-09 10:48:43,573 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 507 transitions, 9191 flow [2024-11-09 10:48:43,573 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) [2024-11-09 10:48:43,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:43,573 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:43,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-09 10:48:43,774 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 [2024-11-09 10:48:43,774 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)] === [2024-11-09 10:48:43,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:43,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1369561908, now seen corresponding path program 31 times [2024-11-09 10:48:43,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:43,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987370924] [2024-11-09 10:48:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:43,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:43,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:43,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987370924] [2024-11-09 10:48:43,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987370924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:43,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109203961] [2024-11-09 10:48:43,833 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:48:43,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:43,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:43,835 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) [2024-11-09 10:48:43,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-09 10:48:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:43,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:43,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:43,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:43,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109203961] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:43,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:43,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:48:43,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417932815] [2024-11-09 10:48:43,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:43,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:43,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:43,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:43,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:43,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:43,954 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) [2024-11-09 10:48:43,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:43,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:43,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:44,453 INFO L124 PetriNetUnfolderBase]: 989/1611 cut-off events. [2024-11-09 10:48:44,453 INFO L125 PetriNetUnfolderBase]: For 61481/61481 co-relation queries the response was YES. [2024-11-09 10:48:44,466 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. [2024-11-09 10:48:44,473 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 347 selfloop transitions, 201 changer transitions 0/549 dead transitions. [2024-11-09 10:48:44,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 549 transitions, 10952 flow [2024-11-09 10:48:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 10:48:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 10:48:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 137 transitions. [2024-11-09 10:48:44,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-11-09 10:48:44,475 INFO L175 Difference]: Start difference. First operand has 324 places, 507 transitions, 9191 flow. Second operand 16 states and 137 transitions. [2024-11-09 10:48:44,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 549 transitions, 10952 flow [2024-11-09 10:48:44,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 549 transitions, 10635 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-11-09 10:48:44,703 INFO L231 Difference]: Finished difference. Result has 335 places, 523 transitions, 9755 flow [2024-11-09 10:48:44,703 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} [2024-11-09 10:48:44,703 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 313 predicate places. [2024-11-09 10:48:44,704 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 523 transitions, 9755 flow [2024-11-09 10:48:44,704 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) [2024-11-09 10:48:44,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:44,704 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:44,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:44,904 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 [2024-11-09 10:48:44,904 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)] === [2024-11-09 10:48:44,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1787176280, now seen corresponding path program 32 times [2024-11-09 10:48:44,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:44,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485267839] [2024-11-09 10:48:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:44,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:44,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485267839] [2024-11-09 10:48:44,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485267839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606745845] [2024-11-09 10:48:44,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:44,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:44,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:44,967 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) [2024-11-09 10:48:44,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-09 10:48:45,021 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:45,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:45,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:45,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:45,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:45,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606745845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:45,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:45,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 10:48:45,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45362567] [2024-11-09 10:48:45,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:45,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:45,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:45,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:45,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:45,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:45,086 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) [2024-11-09 10:48:45,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:45,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:45,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:45,539 INFO L124 PetriNetUnfolderBase]: 1038/1683 cut-off events. [2024-11-09 10:48:45,540 INFO L125 PetriNetUnfolderBase]: For 73126/73126 co-relation queries the response was YES. [2024-11-09 10:48:45,557 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. [2024-11-09 10:48:45,567 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 326 selfloop transitions, 252 changer transitions 0/579 dead transitions. [2024-11-09 10:48:45,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 579 transitions, 12326 flow [2024-11-09 10:48:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 10:48:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 10:48:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 146 transitions. [2024-11-09 10:48:45,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4294117647058823 [2024-11-09 10:48:45,568 INFO L175 Difference]: Start difference. First operand has 335 places, 523 transitions, 9755 flow. Second operand 17 states and 146 transitions. [2024-11-09 10:48:45,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 579 transitions, 12326 flow [2024-11-09 10:48:45,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 579 transitions, 11784 flow, removed 103 selfloop flow, removed 16 redundant places. [2024-11-09 10:48:45,804 INFO L231 Difference]: Finished difference. Result has 340 places, 557 transitions, 11202 flow [2024-11-09 10:48:45,804 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} [2024-11-09 10:48:45,805 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 318 predicate places. [2024-11-09 10:48:45,805 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 557 transitions, 11202 flow [2024-11-09 10:48:45,805 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) [2024-11-09 10:48:45,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:45,805 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:45,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-09 10:48:46,005 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 [2024-11-09 10:48:46,006 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)] === [2024-11-09 10:48:46,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:46,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2145914194, now seen corresponding path program 33 times [2024-11-09 10:48:46,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:46,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997212651] [2024-11-09 10:48:46,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:46,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:46,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:46,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997212651] [2024-11-09 10:48:46,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997212651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:46,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931043307] [2024-11-09 10:48:46,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:46,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:46,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:46,075 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) [2024-11-09 10:48:46,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-09 10:48:46,136 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 10:48:46,136 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:46,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:46,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:46,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:46,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:46,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931043307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:46,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:46,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:48:46,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504040583] [2024-11-09 10:48:46,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:46,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:46,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:46,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:46,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:46,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:46,190 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) [2024-11-09 10:48:46,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:46,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:46,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:46,673 INFO L124 PetriNetUnfolderBase]: 1036/1675 cut-off events. [2024-11-09 10:48:46,674 INFO L125 PetriNetUnfolderBase]: For 75427/75427 co-relation queries the response was YES. [2024-11-09 10:48:46,685 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. [2024-11-09 10:48:46,695 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 394 selfloop transitions, 179 changer transitions 3/577 dead transitions. [2024-11-09 10:48:46,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 577 transitions, 12632 flow [2024-11-09 10:48:46,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:48:46,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:48:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-11-09 10:48:46,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4346153846153846 [2024-11-09 10:48:46,696 INFO L175 Difference]: Start difference. First operand has 340 places, 557 transitions, 11202 flow. Second operand 13 states and 113 transitions. [2024-11-09 10:48:46,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 577 transitions, 12632 flow [2024-11-09 10:48:47,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 577 transitions, 11849 flow, removed 366 selfloop flow, removed 7 redundant places. [2024-11-09 10:48:47,013 INFO L231 Difference]: Finished difference. Result has 345 places, 555 transitions, 10791 flow [2024-11-09 10:48:47,014 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} [2024-11-09 10:48:47,014 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 323 predicate places. [2024-11-09 10:48:47,014 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 555 transitions, 10791 flow [2024-11-09 10:48:47,015 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) [2024-11-09 10:48:47,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:47,015 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:47,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:47,215 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 [2024-11-09 10:48:47,215 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)] === [2024-11-09 10:48:47,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash -936318785, now seen corresponding path program 34 times [2024-11-09 10:48:47,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:47,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438750475] [2024-11-09 10:48:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:47,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:47,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:47,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438750475] [2024-11-09 10:48:47,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438750475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:47,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728864319] [2024-11-09 10:48:47,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:47,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:47,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:47,301 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) [2024-11-09 10:48:47,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-09 10:48:47,366 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:47,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:47,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:48:47,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:47,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:47,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728864319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:47,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:47,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:48:47,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785350310] [2024-11-09 10:48:47,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:47,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:48:47,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:47,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:48:47,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:48:47,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:47,441 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) [2024-11-09 10:48:47,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:47,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:47,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:47,905 INFO L124 PetriNetUnfolderBase]: 1034/1664 cut-off events. [2024-11-09 10:48:47,906 INFO L125 PetriNetUnfolderBase]: For 56393/56393 co-relation queries the response was YES. [2024-11-09 10:48:47,918 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. [2024-11-09 10:48:47,926 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 376 selfloop transitions, 193 changer transitions 2/572 dead transitions. [2024-11-09 10:48:47,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 572 transitions, 12205 flow [2024-11-09 10:48:47,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:48:47,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:48:47,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2024-11-09 10:48:47,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-09 10:48:47,927 INFO L175 Difference]: Start difference. First operand has 345 places, 555 transitions, 10791 flow. Second operand 12 states and 104 transitions. [2024-11-09 10:48:47,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 572 transitions, 12205 flow [2024-11-09 10:48:48,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 572 transitions, 11815 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-11-09 10:48:48,224 INFO L231 Difference]: Finished difference. Result has 340 places, 553 transitions, 10815 flow [2024-11-09 10:48:48,225 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} [2024-11-09 10:48:48,225 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 318 predicate places. [2024-11-09 10:48:48,226 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 553 transitions, 10815 flow [2024-11-09 10:48:48,226 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) [2024-11-09 10:48:48,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:48,226 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:48,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:48,426 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 [2024-11-09 10:48:48,427 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)] === [2024-11-09 10:48:48,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:48,427 INFO L85 PathProgramCache]: Analyzing trace with hash -701783739, now seen corresponding path program 35 times [2024-11-09 10:48:48,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:48,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123014952] [2024-11-09 10:48:48,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:48,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:48,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:48,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123014952] [2024-11-09 10:48:48,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123014952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:48,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886114198] [2024-11-09 10:48:48,658 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:48:48,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:48,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:48,660 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) [2024-11-09 10:48:48,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-09 10:48:48,732 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:48:48,732 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:48,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:48:48,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:48,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:49,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886114198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:49,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:49,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-09 10:48:49,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203477930] [2024-11-09 10:48:49,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:49,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:48:49,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:49,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:48:49,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:48:49,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:49,053 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) [2024-11-09 10:48:49,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:49,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:49,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:49,793 INFO L124 PetriNetUnfolderBase]: 1201/1992 cut-off events. [2024-11-09 10:48:49,793 INFO L125 PetriNetUnfolderBase]: For 65476/65476 co-relation queries the response was YES. [2024-11-09 10:48:49,808 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. [2024-11-09 10:48:49,817 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 560 selfloop transitions, 107 changer transitions 12/680 dead transitions. [2024-11-09 10:48:49,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 680 transitions, 14313 flow [2024-11-09 10:48:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:48:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:48:49,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-11-09 10:48:49,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-09 10:48:49,818 INFO L175 Difference]: Start difference. First operand has 340 places, 553 transitions, 10815 flow. Second operand 11 states and 121 transitions. [2024-11-09 10:48:49,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 680 transitions, 14313 flow [2024-11-09 10:48:50,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 680 transitions, 13841 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-11-09 10:48:50,184 INFO L231 Difference]: Finished difference. Result has 347 places, 611 transitions, 12023 flow [2024-11-09 10:48:50,185 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} [2024-11-09 10:48:50,185 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 325 predicate places. [2024-11-09 10:48:50,185 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 611 transitions, 12023 flow [2024-11-09 10:48:50,185 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) [2024-11-09 10:48:50,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:50,186 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:50,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-09 10:48:50,389 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 [2024-11-09 10:48:50,390 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)] === [2024-11-09 10:48:50,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:50,390 INFO L85 PathProgramCache]: Analyzing trace with hash 416677767, now seen corresponding path program 36 times [2024-11-09 10:48:50,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:50,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426769714] [2024-11-09 10:48:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:50,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:50,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:50,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426769714] [2024-11-09 10:48:50,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426769714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398398126] [2024-11-09 10:48:50,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:48:50,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:50,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:50,619 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) [2024-11-09 10:48:50,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-09 10:48:50,683 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:48:50,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:50,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:48:50,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:50,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:50,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398398126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:50,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:50,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-09 10:48:50,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823689687] [2024-11-09 10:48:50,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:50,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:48:50,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:50,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:48:50,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:48:50,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:50,975 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) [2024-11-09 10:48:50,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:50,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:50,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:51,894 INFO L124 PetriNetUnfolderBase]: 1206/2009 cut-off events. [2024-11-09 10:48:51,895 INFO L125 PetriNetUnfolderBase]: For 68120/68120 co-relation queries the response was YES. [2024-11-09 10:48:51,911 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. [2024-11-09 10:48:51,922 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 557 selfloop transitions, 93 changer transitions 13/664 dead transitions. [2024-11-09 10:48:51,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 664 transitions, 14032 flow [2024-11-09 10:48:51,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:48:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:48:51,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-11-09 10:48:51,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-09 10:48:51,923 INFO L175 Difference]: Start difference. First operand has 347 places, 611 transitions, 12023 flow. Second operand 12 states and 118 transitions. [2024-11-09 10:48:51,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 664 transitions, 14032 flow [2024-11-09 10:48:52,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 664 transitions, 13712 flow, removed 159 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:52,253 INFO L231 Difference]: Finished difference. Result has 359 places, 623 transitions, 12308 flow [2024-11-09 10:48:52,254 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} [2024-11-09 10:48:52,254 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 337 predicate places. [2024-11-09 10:48:52,254 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 623 transitions, 12308 flow [2024-11-09 10:48:52,254 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) [2024-11-09 10:48:52,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:52,254 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:52,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:52,455 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 [2024-11-09 10:48:52,455 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)] === [2024-11-09 10:48:52,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:52,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1032936729, now seen corresponding path program 37 times [2024-11-09 10:48:52,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:52,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995913863] [2024-11-09 10:48:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:52,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:52,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:52,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995913863] [2024-11-09 10:48:52,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995913863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:52,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650188896] [2024-11-09 10:48:52,654 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:48:52,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:52,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:52,656 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) [2024-11-09 10:48:52,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-09 10:48:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:52,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:48:52,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:52,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:53,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650188896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:53,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:53,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 10:48:53,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937420266] [2024-11-09 10:48:53,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:53,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:48:53,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:48:53,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:48:53,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:53,026 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) [2024-11-09 10:48:53,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:53,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:53,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:53,863 INFO L124 PetriNetUnfolderBase]: 1192/1976 cut-off events. [2024-11-09 10:48:53,863 INFO L125 PetriNetUnfolderBase]: For 62343/62343 co-relation queries the response was YES. [2024-11-09 10:48:53,878 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. [2024-11-09 10:48:53,887 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 549 selfloop transitions, 111 changer transitions 4/665 dead transitions. [2024-11-09 10:48:53,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 665 transitions, 14099 flow [2024-11-09 10:48:53,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:48:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:48:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-11-09 10:48:53,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-11-09 10:48:53,888 INFO L175 Difference]: Start difference. First operand has 359 places, 623 transitions, 12308 flow. Second operand 11 states and 112 transitions. [2024-11-09 10:48:53,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 665 transitions, 14099 flow [2024-11-09 10:48:54,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 665 transitions, 13781 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-11-09 10:48:54,230 INFO L231 Difference]: Finished difference. Result has 364 places, 630 transitions, 12449 flow [2024-11-09 10:48:54,230 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} [2024-11-09 10:48:54,231 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 342 predicate places. [2024-11-09 10:48:54,231 INFO L471 AbstractCegarLoop]: Abstraction has has 364 places, 630 transitions, 12449 flow [2024-11-09 10:48:54,231 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) [2024-11-09 10:48:54,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:54,231 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:54,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-09 10:48:54,431 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 [2024-11-09 10:48:54,432 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)] === [2024-11-09 10:48:54,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:54,432 INFO L85 PathProgramCache]: Analyzing trace with hash 112693913, now seen corresponding path program 38 times [2024-11-09 10:48:54,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:54,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779050429] [2024-11-09 10:48:54,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:54,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:54,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:54,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779050429] [2024-11-09 10:48:54,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779050429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:54,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240418765] [2024-11-09 10:48:54,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:54,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:54,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:54,634 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) [2024-11-09 10:48:54,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-09 10:48:54,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:54,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:54,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:48:54,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:54,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:54,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240418765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:54,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:54,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 10:48:54,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231243191] [2024-11-09 10:48:54,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:54,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:48:54,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:54,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:48:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:48:54,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:54,988 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) [2024-11-09 10:48:54,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:54,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:54,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:55,719 INFO L124 PetriNetUnfolderBase]: 1190/1966 cut-off events. [2024-11-09 10:48:55,719 INFO L125 PetriNetUnfolderBase]: For 63152/63152 co-relation queries the response was YES. [2024-11-09 10:48:55,735 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. [2024-11-09 10:48:55,744 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 541 selfloop transitions, 109 changer transitions 13/664 dead transitions. [2024-11-09 10:48:55,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 664 transitions, 14093 flow [2024-11-09 10:48:55,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:48:55,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:48:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-11-09 10:48:55,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:48:55,745 INFO L175 Difference]: Start difference. First operand has 364 places, 630 transitions, 12449 flow. Second operand 11 states and 110 transitions. [2024-11-09 10:48:55,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 664 transitions, 14093 flow [2024-11-09 10:48:56,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 664 transitions, 13811 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-11-09 10:48:56,109 INFO L231 Difference]: Finished difference. Result has 367 places, 628 transitions, 12393 flow [2024-11-09 10:48:56,109 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} [2024-11-09 10:48:56,109 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 345 predicate places. [2024-11-09 10:48:56,110 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 628 transitions, 12393 flow [2024-11-09 10:48:56,110 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) [2024-11-09 10:48:56,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:56,110 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:56,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:56,310 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 [2024-11-09 10:48:56,311 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)] === [2024-11-09 10:48:56,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash 571292345, now seen corresponding path program 39 times [2024-11-09 10:48:56,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:56,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963195060] [2024-11-09 10:48:56,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:56,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:56,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:56,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963195060] [2024-11-09 10:48:56,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963195060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:56,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551798612] [2024-11-09 10:48:56,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:56,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:56,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:56,501 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) [2024-11-09 10:48:56,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-09 10:48:56,568 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 10:48:56,568 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:56,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:48:56,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:56,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:56,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551798612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:56,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:56,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-09 10:48:56,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175055000] [2024-11-09 10:48:56,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:56,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:48:56,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:56,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:48:56,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-09 10:48:56,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:56,889 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) [2024-11-09 10:48:56,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:56,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:56,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:57,521 INFO L124 PetriNetUnfolderBase]: 1247/2070 cut-off events. [2024-11-09 10:48:57,521 INFO L125 PetriNetUnfolderBase]: For 68740/68740 co-relation queries the response was YES. [2024-11-09 10:48:57,537 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. [2024-11-09 10:48:57,547 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 598 selfloop transitions, 86 changer transitions 6/691 dead transitions. [2024-11-09 10:48:57,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 691 transitions, 14784 flow [2024-11-09 10:48:57,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:48:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:48:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-11-09 10:48:57,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-09 10:48:57,548 INFO L175 Difference]: Start difference. First operand has 367 places, 628 transitions, 12393 flow. Second operand 8 states and 88 transitions. [2024-11-09 10:48:57,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 691 transitions, 14784 flow [2024-11-09 10:48:58,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 691 transitions, 14431 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-11-09 10:48:58,047 INFO L231 Difference]: Finished difference. Result has 365 places, 656 transitions, 12888 flow [2024-11-09 10:48:58,048 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} [2024-11-09 10:48:58,048 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 343 predicate places. [2024-11-09 10:48:58,048 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 656 transitions, 12888 flow [2024-11-09 10:48:58,049 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) [2024-11-09 10:48:58,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:58,049 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:58,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-09 10:48:58,249 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 [2024-11-09 10:48:58,249 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)] === [2024-11-09 10:48:58,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:58,250 INFO L85 PathProgramCache]: Analyzing trace with hash 493537835, now seen corresponding path program 40 times [2024-11-09 10:48:58,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:58,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800738908] [2024-11-09 10:48:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:58,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:58,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:58,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800738908] [2024-11-09 10:48:58,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800738908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:58,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185179967] [2024-11-09 10:48:58,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:58,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:58,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:58,431 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) [2024-11-09 10:48:58,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-09 10:48:58,494 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:58,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:58,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:48:58,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:58,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:58,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185179967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:58,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:58,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2024-11-09 10:48:58,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867074207] [2024-11-09 10:48:58,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:58,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:48:58,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:58,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:48:58,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:48:58,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:58,802 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) [2024-11-09 10:48:58,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:58,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:58,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:59,450 INFO L124 PetriNetUnfolderBase]: 1243/2058 cut-off events. [2024-11-09 10:48:59,450 INFO L125 PetriNetUnfolderBase]: For 69132/69132 co-relation queries the response was YES. [2024-11-09 10:48:59,466 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. [2024-11-09 10:48:59,476 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 593 selfloop transitions, 86 changer transitions 5/685 dead transitions. [2024-11-09 10:48:59,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 685 transitions, 14614 flow [2024-11-09 10:48:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:48:59,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:48:59,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-11-09 10:48:59,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-09 10:48:59,477 INFO L175 Difference]: Start difference. First operand has 365 places, 656 transitions, 12888 flow. Second operand 8 states and 85 transitions. [2024-11-09 10:48:59,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 685 transitions, 14614 flow [2024-11-09 10:48:59,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 685 transitions, 14353 flow, removed 98 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:59,998 INFO L231 Difference]: Finished difference. Result has 370 places, 659 transitions, 12973 flow [2024-11-09 10:48:59,999 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} [2024-11-09 10:48:59,999 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 348 predicate places. [2024-11-09 10:48:59,999 INFO L471 AbstractCegarLoop]: Abstraction has has 370 places, 659 transitions, 12973 flow [2024-11-09 10:49:00,000 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) [2024-11-09 10:49:00,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:00,000 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:00,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-09 10:49:00,200 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 [2024-11-09 10:49:00,200 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)] === [2024-11-09 10:49:00,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:00,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2005925891, now seen corresponding path program 41 times [2024-11-09 10:49:00,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:00,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461203701] [2024-11-09 10:49:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:00,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:00,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:00,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461203701] [2024-11-09 10:49:00,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461203701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:00,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668489338] [2024-11-09 10:49:00,396 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:49:00,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:00,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:00,398 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) [2024-11-09 10:49:00,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-09 10:49:00,464 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:49:00,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:00,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:49:00,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:00,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:00,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668489338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:00,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:00,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-09 10:49:00,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900699127] [2024-11-09 10:49:00,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:00,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:49:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:49:00,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:49:00,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:00,736 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) [2024-11-09 10:49:00,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:00,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:00,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:01,389 INFO L124 PetriNetUnfolderBase]: 1238/2047 cut-off events. [2024-11-09 10:49:01,389 INFO L125 PetriNetUnfolderBase]: For 66580/66580 co-relation queries the response was YES. [2024-11-09 10:49:01,408 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. [2024-11-09 10:49:01,419 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 606 selfloop transitions, 70 changer transitions 4/681 dead transitions. [2024-11-09 10:49:01,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 681 transitions, 14523 flow [2024-11-09 10:49:01,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:49:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:49:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-11-09 10:49:01,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:49:01,420 INFO L175 Difference]: Start difference. First operand has 370 places, 659 transitions, 12973 flow. Second operand 8 states and 80 transitions. [2024-11-09 10:49:01,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 681 transitions, 14523 flow [2024-11-09 10:49:01,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 681 transitions, 14301 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-11-09 10:49:01,998 INFO L231 Difference]: Finished difference. Result has 373 places, 662 transitions, 13045 flow [2024-11-09 10:49:01,998 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} [2024-11-09 10:49:01,998 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 351 predicate places. [2024-11-09 10:49:01,998 INFO L471 AbstractCegarLoop]: Abstraction has has 373 places, 662 transitions, 13045 flow [2024-11-09 10:49:01,999 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) [2024-11-09 10:49:01,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:01,999 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:02,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-09 10:49:02,199 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 [2024-11-09 10:49:02,199 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)] === [2024-11-09 10:49:02,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:02,200 INFO L85 PathProgramCache]: Analyzing trace with hash -894747047, now seen corresponding path program 42 times [2024-11-09 10:49:02,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:02,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535356615] [2024-11-09 10:49:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:02,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:02,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:02,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535356615] [2024-11-09 10:49:02,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535356615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:02,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857269607] [2024-11-09 10:49:02,413 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:49:02,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:02,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:02,415 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) [2024-11-09 10:49:02,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-09 10:49:02,477 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 10:49:02,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:02,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:49:02,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:02,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:02,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857269607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:02,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:02,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-09 10:49:02,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245900859] [2024-11-09 10:49:02,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:02,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 10:49:02,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:02,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 10:49:02,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-09 10:49:02,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:02,790 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) [2024-11-09 10:49:02,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:02,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:02,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:03,753 INFO L124 PetriNetUnfolderBase]: 1416/2392 cut-off events. [2024-11-09 10:49:03,753 INFO L125 PetriNetUnfolderBase]: For 82191/82191 co-relation queries the response was YES. [2024-11-09 10:49:03,772 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. [2024-11-09 10:49:03,786 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 682 selfloop transitions, 111 changer transitions 13/807 dead transitions. [2024-11-09 10:49:03,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 807 transitions, 17380 flow [2024-11-09 10:49:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:49:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:49:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-11-09 10:49:03,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5545454545454546 [2024-11-09 10:49:03,787 INFO L175 Difference]: Start difference. First operand has 373 places, 662 transitions, 13045 flow. Second operand 11 states and 122 transitions. [2024-11-09 10:49:03,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 807 transitions, 17380 flow [2024-11-09 10:49:04,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 807 transitions, 17119 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-11-09 10:49:04,258 INFO L231 Difference]: Finished difference. Result has 385 places, 729 transitions, 14746 flow [2024-11-09 10:49:04,259 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} [2024-11-09 10:49:04,259 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 363 predicate places. [2024-11-09 10:49:04,259 INFO L471 AbstractCegarLoop]: Abstraction has has 385 places, 729 transitions, 14746 flow [2024-11-09 10:49:04,259 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) [2024-11-09 10:49:04,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:04,259 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:04,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-09 10:49:04,460 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 [2024-11-09 10:49:04,460 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)] === [2024-11-09 10:49:04,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:04,460 INFO L85 PathProgramCache]: Analyzing trace with hash -972501557, now seen corresponding path program 43 times [2024-11-09 10:49:04,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:04,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682884739] [2024-11-09 10:49:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:04,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:04,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:04,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682884739] [2024-11-09 10:49:04,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682884739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:04,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597074505] [2024-11-09 10:49:04,650 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:49:04,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:04,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:04,652 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) [2024-11-09 10:49:04,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-09 10:49:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:04,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:49:04,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:04,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:04,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:04,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597074505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:04,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:04,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-09 10:49:04,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824597854] [2024-11-09 10:49:04,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:04,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:49:04,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:04,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:49:04,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:49:04,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:04,957 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) [2024-11-09 10:49:04,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:04,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:04,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:05,865 INFO L124 PetriNetUnfolderBase]: 1407/2365 cut-off events. [2024-11-09 10:49:05,866 INFO L125 PetriNetUnfolderBase]: For 86577/86577 co-relation queries the response was YES. [2024-11-09 10:49:05,883 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. [2024-11-09 10:49:05,894 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 670 selfloop transitions, 111 changer transitions 12/794 dead transitions. [2024-11-09 10:49:05,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 794 transitions, 17460 flow [2024-11-09 10:49:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:49:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:49:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-11-09 10:49:05,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-11-09 10:49:05,895 INFO L175 Difference]: Start difference. First operand has 385 places, 729 transitions, 14746 flow. Second operand 11 states and 116 transitions. [2024-11-09 10:49:05,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 794 transitions, 17460 flow [2024-11-09 10:49:06,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 794 transitions, 16957 flow, removed 250 selfloop flow, removed 3 redundant places. [2024-11-09 10:49:06,435 INFO L231 Difference]: Finished difference. Result has 394 places, 730 transitions, 14650 flow [2024-11-09 10:49:06,435 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} [2024-11-09 10:49:06,436 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 372 predicate places. [2024-11-09 10:49:06,436 INFO L471 AbstractCegarLoop]: Abstraction has has 394 places, 730 transitions, 14650 flow [2024-11-09 10:49:06,436 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) [2024-11-09 10:49:06,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:06,436 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:06,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-09 10:49:06,636 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 [2024-11-09 10:49:06,637 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)] === [2024-11-09 10:49:06,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash -479564391, now seen corresponding path program 44 times [2024-11-09 10:49:06,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:06,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571083278] [2024-11-09 10:49:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:06,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:06,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:06,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571083278] [2024-11-09 10:49:06,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571083278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:06,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452005133] [2024-11-09 10:49:06,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:49:06,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:06,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:06,829 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) [2024-11-09 10:49:06,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-09 10:49:06,886 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:49:06,886 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:06,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:49:06,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:06,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:07,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452005133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:07,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:07,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-09 10:49:07,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89335720] [2024-11-09 10:49:07,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:07,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:49:07,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:07,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:49:07,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:49:07,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:07,121 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) [2024-11-09 10:49:07,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:07,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:07,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:08,044 INFO L124 PetriNetUnfolderBase]: 1433/2418 cut-off events. [2024-11-09 10:49:08,045 INFO L125 PetriNetUnfolderBase]: For 83892/83892 co-relation queries the response was YES. [2024-11-09 10:49:08,066 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. [2024-11-09 10:49:08,077 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 692 selfloop transitions, 82 changer transitions 4/779 dead transitions. [2024-11-09 10:49:08,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 779 transitions, 16931 flow [2024-11-09 10:49:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:49:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:49:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-11-09 10:49:08,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-09 10:49:08,078 INFO L175 Difference]: Start difference. First operand has 394 places, 730 transitions, 14650 flow. Second operand 9 states and 92 transitions. [2024-11-09 10:49:08,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 779 transitions, 16931 flow [2024-11-09 10:49:08,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 779 transitions, 16543 flow, removed 102 selfloop flow, removed 7 redundant places. [2024-11-09 10:49:08,586 INFO L231 Difference]: Finished difference. Result has 396 places, 750 transitions, 14992 flow [2024-11-09 10:49:08,587 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} [2024-11-09 10:49:08,587 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 374 predicate places. [2024-11-09 10:49:08,588 INFO L471 AbstractCegarLoop]: Abstraction has has 396 places, 750 transitions, 14992 flow [2024-11-09 10:49:08,588 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) [2024-11-09 10:49:08,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:08,588 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:08,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-09 10:49:08,788 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 [2024-11-09 10:49:08,789 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)] === [2024-11-09 10:49:08,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1399807207, now seen corresponding path program 45 times [2024-11-09 10:49:08,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:08,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647437672] [2024-11-09 10:49:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:08,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:09,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:09,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647437672] [2024-11-09 10:49:09,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647437672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:09,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452346433] [2024-11-09 10:49:09,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:49:09,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:09,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:09,005 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) [2024-11-09 10:49:09,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-09 10:49:09,070 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 10:49:09,071 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:09,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:49:09,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:09,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:09,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452346433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:09,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:09,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-09 10:49:09,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447014254] [2024-11-09 10:49:09,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:09,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:49:09,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:09,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:49:09,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-09 10:49:09,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:09,364 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) [2024-11-09 10:49:09,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:09,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:09,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:10,221 INFO L124 PetriNetUnfolderBase]: 1480/2493 cut-off events. [2024-11-09 10:49:10,221 INFO L125 PetriNetUnfolderBase]: For 84962/84962 co-relation queries the response was YES. [2024-11-09 10:49:10,244 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. [2024-11-09 10:49:10,257 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 704 selfloop transitions, 98 changer transitions 6/809 dead transitions. [2024-11-09 10:49:10,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 809 transitions, 17541 flow [2024-11-09 10:49:10,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:49:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:49:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-11-09 10:49:10,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-11-09 10:49:10,258 INFO L175 Difference]: Start difference. First operand has 396 places, 750 transitions, 14992 flow. Second operand 8 states and 92 transitions. [2024-11-09 10:49:10,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 809 transitions, 17541 flow [2024-11-09 10:49:10,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 809 transitions, 17183 flow, removed 124 selfloop flow, removed 5 redundant places. [2024-11-09 10:49:10,831 INFO L231 Difference]: Finished difference. Result has 400 places, 771 transitions, 15414 flow [2024-11-09 10:49:10,831 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} [2024-11-09 10:49:10,831 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 378 predicate places. [2024-11-09 10:49:10,832 INFO L471 AbstractCegarLoop]: Abstraction has has 400 places, 771 transitions, 15414 flow [2024-11-09 10:49:10,832 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) [2024-11-09 10:49:10,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:10,832 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:10,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-09 10:49:11,032 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 [2024-11-09 10:49:11,032 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)] === [2024-11-09 10:49:11,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:11,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1411105481, now seen corresponding path program 46 times [2024-11-09 10:49:11,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:11,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157546835] [2024-11-09 10:49:11,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:11,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:11,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:11,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157546835] [2024-11-09 10:49:11,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157546835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:11,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56949934] [2024-11-09 10:49:11,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:49:11,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:11,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:11,239 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) [2024-11-09 10:49:11,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-09 10:49:11,294 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:49:11,294 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:11,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:49:11,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:49:11,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:11,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56949934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:11,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:11,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-09 10:49:11,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747864320] [2024-11-09 10:49:11,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:11,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:49:11,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:11,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:49:11,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:49:11,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:11,562 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) [2024-11-09 10:49:11,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:11,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:11,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:12,349 INFO L124 PetriNetUnfolderBase]: 1475/2482 cut-off events. [2024-11-09 10:49:12,349 INFO L125 PetriNetUnfolderBase]: For 85499/85499 co-relation queries the response was YES. [2024-11-09 10:49:12,371 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. [2024-11-09 10:49:12,383 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 728 selfloop transitions, 48 changer transitions 13/790 dead transitions. [2024-11-09 10:49:12,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 790 transitions, 17180 flow [2024-11-09 10:49:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:49:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:49:12,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-11-09 10:49:12,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-11-09 10:49:12,384 INFO L175 Difference]: Start difference. First operand has 400 places, 771 transitions, 15414 flow. Second operand 7 states and 71 transitions. [2024-11-09 10:49:12,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 790 transitions, 17180 flow [2024-11-09 10:49:12,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 790 transitions, 16878 flow, removed 78 selfloop flow, removed 5 redundant places. [2024-11-09 10:49:12,965 INFO L231 Difference]: Finished difference. Result has 402 places, 764 transitions, 15139 flow [2024-11-09 10:49:12,966 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} [2024-11-09 10:49:12,966 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 380 predicate places. [2024-11-09 10:49:12,966 INFO L471 AbstractCegarLoop]: Abstraction has has 402 places, 764 transitions, 15139 flow [2024-11-09 10:49:12,966 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) [2024-11-09 10:49:12,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:12,967 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:12,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-09 10:49:13,167 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 [2024-11-09 10:49:13,167 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)] === [2024-11-09 10:49:13,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1477561717, now seen corresponding path program 47 times [2024-11-09 10:49:13,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:13,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359884684] [2024-11-09 10:49:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:13,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:13,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:13,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359884684] [2024-11-09 10:49:13,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359884684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:13,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329172254] [2024-11-09 10:49:13,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:49:13,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:13,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:13,377 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) [2024-11-09 10:49:13,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-09 10:49:13,434 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:49:13,435 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:13,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:49:13,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:13,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:13,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329172254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:13,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:13,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-09 10:49:13,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454996212] [2024-11-09 10:49:13,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:13,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:49:13,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:13,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:49:13,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-09 10:49:13,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:13,693 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) [2024-11-09 10:49:13,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:13,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:13,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:14,503 INFO L124 PetriNetUnfolderBase]: 1461/2452 cut-off events. [2024-11-09 10:49:14,503 INFO L125 PetriNetUnfolderBase]: For 82071/82071 co-relation queries the response was YES. [2024-11-09 10:49:14,524 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. [2024-11-09 10:49:14,535 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 694 selfloop transitions, 92 changer transitions 6/793 dead transitions. [2024-11-09 10:49:14,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 793 transitions, 16961 flow [2024-11-09 10:49:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:49:14,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:49:14,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-11-09 10:49:14,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-11-09 10:49:14,536 INFO L175 Difference]: Start difference. First operand has 402 places, 764 transitions, 15139 flow. Second operand 9 states and 94 transitions. [2024-11-09 10:49:14,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 793 transitions, 16961 flow [2024-11-09 10:49:15,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 793 transitions, 16769 flow, removed 69 selfloop flow, removed 3 redundant places. [2024-11-09 10:49:15,149 INFO L231 Difference]: Finished difference. Result has 408 places, 766 transitions, 15258 flow [2024-11-09 10:49:15,150 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} [2024-11-09 10:49:15,150 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 386 predicate places. [2024-11-09 10:49:15,150 INFO L471 AbstractCegarLoop]: Abstraction has has 408 places, 766 transitions, 15258 flow [2024-11-09 10:49:15,150 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) [2024-11-09 10:49:15,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:15,150 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:15,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-11-09 10:49:15,351 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 [2024-11-09 10:49:15,351 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)] === [2024-11-09 10:49:15,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:15,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1761351975, now seen corresponding path program 48 times [2024-11-09 10:49:15,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:15,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348550741] [2024-11-09 10:49:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:15,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:15,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:15,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348550741] [2024-11-09 10:49:15,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348550741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:15,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066098108] [2024-11-09 10:49:15,567 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:49:15,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:15,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:15,569 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) [2024-11-09 10:49:15,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-09 10:49:15,630 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:49:15,630 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:15,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:49:15,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:15,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:15,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:15,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066098108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:15,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:15,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 10:49:15,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395963474] [2024-11-09 10:49:15,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:15,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:49:15,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:15,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:49:15,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:49:15,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:15,849 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) [2024-11-09 10:49:15,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:15,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:15,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:16,878 INFO L124 PetriNetUnfolderBase]: 1462/2466 cut-off events. [2024-11-09 10:49:16,878 INFO L125 PetriNetUnfolderBase]: For 82721/82721 co-relation queries the response was YES. [2024-11-09 10:49:16,899 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. [2024-11-09 10:49:16,913 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 716 selfloop transitions, 91 changer transitions 4/812 dead transitions. [2024-11-09 10:49:16,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 812 transitions, 17531 flow [2024-11-09 10:49:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:49:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:49:16,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-11-09 10:49:16,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-11-09 10:49:16,915 INFO L175 Difference]: Start difference. First operand has 408 places, 766 transitions, 15258 flow. Second operand 11 states and 107 transitions. [2024-11-09 10:49:16,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 812 transitions, 17531 flow [2024-11-09 10:49:17,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 812 transitions, 17336 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-09 10:49:17,525 INFO L231 Difference]: Finished difference. Result has 414 places, 781 transitions, 15752 flow [2024-11-09 10:49:17,526 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} [2024-11-09 10:49:17,526 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 392 predicate places. [2024-11-09 10:49:17,526 INFO L471 AbstractCegarLoop]: Abstraction has has 414 places, 781 transitions, 15752 flow [2024-11-09 10:49:17,526 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) [2024-11-09 10:49:17,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:17,527 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:17,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-09 10:49:17,727 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 [2024-11-09 10:49:17,727 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)] === [2024-11-09 10:49:17,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:17,728 INFO L85 PathProgramCache]: Analyzing trace with hash 823002013, now seen corresponding path program 49 times [2024-11-09 10:49:17,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:17,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232513071] [2024-11-09 10:49:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:17,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:17,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:17,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232513071] [2024-11-09 10:49:17,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232513071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:17,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184190882] [2024-11-09 10:49:17,987 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:49:17,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:17,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:17,989 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) [2024-11-09 10:49:17,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-09 10:49:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:18,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 10:49:18,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:18,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:18,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:18,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184190882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:18,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:18,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 10:49:18,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046081599] [2024-11-09 10:49:18,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:18,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:49:18,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:18,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:49:18,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:49:18,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:18,329 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) [2024-11-09 10:49:18,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:18,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:18,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:19,338 INFO L124 PetriNetUnfolderBase]: 1461/2459 cut-off events. [2024-11-09 10:49:19,338 INFO L125 PetriNetUnfolderBase]: For 82996/82996 co-relation queries the response was YES. [2024-11-09 10:49:19,354 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. [2024-11-09 10:49:19,362 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 710 selfloop transitions, 110 changer transitions 4/825 dead transitions. [2024-11-09 10:49:19,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 825 transitions, 17978 flow [2024-11-09 10:49:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:49:19,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:49:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-11-09 10:49:19,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2024-11-09 10:49:19,363 INFO L175 Difference]: Start difference. First operand has 414 places, 781 transitions, 15752 flow. Second operand 11 states and 111 transitions. [2024-11-09 10:49:19,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 825 transitions, 17978 flow [2024-11-09 10:49:19,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 825 transitions, 17607 flow, removed 117 selfloop flow, removed 7 redundant places. [2024-11-09 10:49:19,884 INFO L231 Difference]: Finished difference. Result has 419 places, 789 transitions, 15888 flow [2024-11-09 10:49:19,885 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} [2024-11-09 10:49:19,885 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 397 predicate places. [2024-11-09 10:49:19,885 INFO L471 AbstractCegarLoop]: Abstraction has has 419 places, 789 transitions, 15888 flow [2024-11-09 10:49:19,885 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) [2024-11-09 10:49:19,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:19,885 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:19,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-09 10:49:20,086 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 [2024-11-09 10:49:20,086 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)] === [2024-11-09 10:49:20,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:20,086 INFO L85 PathProgramCache]: Analyzing trace with hash -403040810, now seen corresponding path program 50 times [2024-11-09 10:49:20,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:20,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958461972] [2024-11-09 10:49:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:20,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:20,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:20,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958461972] [2024-11-09 10:49:20,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958461972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:20,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356241012] [2024-11-09 10:49:20,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:49:20,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:20,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:20,170 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) [2024-11-09 10:49:20,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-09 10:49:20,240 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:49:20,240 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:20,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:49:20,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:20,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:20,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356241012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:20,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:20,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 10:49:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735568628] [2024-11-09 10:49:20,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:20,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:49:20,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:20,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:49:20,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:49:20,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:20,352 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) [2024-11-09 10:49:20,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:20,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:20,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:21,525 INFO L124 PetriNetUnfolderBase]: 1930/3270 cut-off events. [2024-11-09 10:49:21,525 INFO L125 PetriNetUnfolderBase]: For 116848/116848 co-relation queries the response was YES. [2024-11-09 10:49:21,548 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. [2024-11-09 10:49:21,563 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 650 selfloop transitions, 429 changer transitions 0/1080 dead transitions. [2024-11-09 10:49:21,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 1080 transitions, 23521 flow [2024-11-09 10:49:21,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:49:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:49:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-11-09 10:49:21,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-11-09 10:49:21,565 INFO L175 Difference]: Start difference. First operand has 419 places, 789 transitions, 15888 flow. Second operand 13 states and 126 transitions. [2024-11-09 10:49:21,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 1080 transitions, 23521 flow [2024-11-09 10:49:22,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 1080 transitions, 23002 flow, removed 112 selfloop flow, removed 9 redundant places. [2024-11-09 10:49:22,245 INFO L231 Difference]: Finished difference. Result has 430 places, 944 transitions, 20365 flow [2024-11-09 10:49:22,246 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} [2024-11-09 10:49:22,247 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 408 predicate places. [2024-11-09 10:49:22,247 INFO L471 AbstractCegarLoop]: Abstraction has has 430 places, 944 transitions, 20365 flow [2024-11-09 10:49:22,247 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) [2024-11-09 10:49:22,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:22,248 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:22,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-09 10:49:22,448 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 [2024-11-09 10:49:22,448 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)] === [2024-11-09 10:49:22,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash 580662329, now seen corresponding path program 51 times [2024-11-09 10:49:22,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:22,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372163648] [2024-11-09 10:49:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:22,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:22,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:22,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372163648] [2024-11-09 10:49:22,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372163648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:22,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936093834] [2024-11-09 10:49:22,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:49:22,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:22,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:22,518 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) [2024-11-09 10:49:22,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-09 10:49:22,575 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 10:49:22,575 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:22,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:49:22,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:22,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:22,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936093834] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:22,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:22,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-09 10:49:22,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925481096] [2024-11-09 10:49:22,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:22,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:49:22,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:22,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:49:22,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:49:22,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:22,647 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) [2024-11-09 10:49:22,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:22,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:22,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:23,887 INFO L124 PetriNetUnfolderBase]: 1933/3282 cut-off events. [2024-11-09 10:49:23,888 INFO L125 PetriNetUnfolderBase]: For 124745/124745 co-relation queries the response was YES. [2024-11-09 10:49:23,913 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. [2024-11-09 10:49:23,927 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 803 selfloop transitions, 245 changer transitions 12/1061 dead transitions. [2024-11-09 10:49:23,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 1061 transitions, 24491 flow [2024-11-09 10:49:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:49:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:49:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-11-09 10:49:23,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:49:23,928 INFO L175 Difference]: Start difference. First operand has 430 places, 944 transitions, 20365 flow. Second operand 9 states and 90 transitions. [2024-11-09 10:49:23,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 1061 transitions, 24491 flow [2024-11-09 10:49:24,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 1061 transitions, 24080 flow, removed 115 selfloop flow, removed 3 redundant places. [2024-11-09 10:49:24,718 INFO L231 Difference]: Finished difference. Result has 438 places, 942 transitions, 20402 flow [2024-11-09 10:49:24,719 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} [2024-11-09 10:49:24,719 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 416 predicate places. [2024-11-09 10:49:24,719 INFO L471 AbstractCegarLoop]: Abstraction has has 438 places, 942 transitions, 20402 flow [2024-11-09 10:49:24,720 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) [2024-11-09 10:49:24,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:24,720 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:24,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-11-09 10:49:24,920 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 [2024-11-09 10:49:24,920 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)] === [2024-11-09 10:49:24,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:24,921 INFO L85 PathProgramCache]: Analyzing trace with hash -894717218, now seen corresponding path program 52 times [2024-11-09 10:49:24,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:24,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853047280] [2024-11-09 10:49:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:24,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:24,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:24,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853047280] [2024-11-09 10:49:24,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853047280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:24,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420403410] [2024-11-09 10:49:24,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:49:24,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:24,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:24,997 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) [2024-11-09 10:49:24,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-09 10:49:25,057 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:49:25,057 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:25,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:49:25,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:25,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:25,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420403410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:25,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:25,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-09 10:49:25,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891303169] [2024-11-09 10:49:25,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:25,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:49:25,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:49:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:49:25,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:25,145 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) [2024-11-09 10:49:25,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:25,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:25,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:26,614 INFO L124 PetriNetUnfolderBase]: 2018/3417 cut-off events. [2024-11-09 10:49:26,614 INFO L125 PetriNetUnfolderBase]: For 134478/134478 co-relation queries the response was YES. [2024-11-09 10:49:26,647 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. [2024-11-09 10:49:26,670 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 648 selfloop transitions, 382 changer transitions 0/1031 dead transitions. [2024-11-09 10:49:26,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 1031 transitions, 23983 flow [2024-11-09 10:49:26,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 10:49:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 10:49:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 164 transitions. [2024-11-09 10:49:26,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43157894736842106 [2024-11-09 10:49:26,671 INFO L175 Difference]: Start difference. First operand has 438 places, 942 transitions, 20402 flow. Second operand 19 states and 164 transitions. [2024-11-09 10:49:26,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 1031 transitions, 23983 flow [2024-11-09 10:49:27,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 1031 transitions, 23391 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-11-09 10:49:27,569 INFO L231 Difference]: Finished difference. Result has 453 places, 985 transitions, 21751 flow [2024-11-09 10:49:27,570 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} [2024-11-09 10:49:27,571 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 431 predicate places. [2024-11-09 10:49:27,571 INFO L471 AbstractCegarLoop]: Abstraction has has 453 places, 985 transitions, 21751 flow [2024-11-09 10:49:27,571 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) [2024-11-09 10:49:27,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:27,571 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:27,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-09 10:49:27,771 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 [2024-11-09 10:49:27,772 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)] === [2024-11-09 10:49:27,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:27,772 INFO L85 PathProgramCache]: Analyzing trace with hash -953935908, now seen corresponding path program 53 times [2024-11-09 10:49:27,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:27,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184092536] [2024-11-09 10:49:27,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:27,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:27,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:27,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184092536] [2024-11-09 10:49:27,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184092536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:27,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469953770] [2024-11-09 10:49:27,861 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:49:27,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:27,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:27,862 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) [2024-11-09 10:49:27,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-09 10:49:27,924 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 10:49:27,924 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:27,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:49:27,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:27,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:28,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469953770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:28,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:28,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 10:49:28,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676543652] [2024-11-09 10:49:28,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:28,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:49:28,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:28,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:49:28,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:49:28,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:28,025 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) [2024-11-09 10:49:28,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:28,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:28,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:29,700 INFO L124 PetriNetUnfolderBase]: 2149/3625 cut-off events. [2024-11-09 10:49:29,700 INFO L125 PetriNetUnfolderBase]: For 158944/158944 co-relation queries the response was YES. [2024-11-09 10:49:29,733 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. [2024-11-09 10:49:29,752 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 547 selfloop transitions, 552 changer transitions 0/1100 dead transitions. [2024-11-09 10:49:29,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 1100 transitions, 26961 flow [2024-11-09 10:49:29,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 10:49:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 10:49:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 209 transitions. [2024-11-09 10:49:29,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4354166666666667 [2024-11-09 10:49:29,753 INFO L175 Difference]: Start difference. First operand has 453 places, 985 transitions, 21751 flow. Second operand 24 states and 209 transitions. [2024-11-09 10:49:29,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 1100 transitions, 26961 flow [2024-11-09 10:49:30,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 1100 transitions, 26326 flow, removed 237 selfloop flow, removed 4 redundant places. [2024-11-09 10:49:30,651 INFO L231 Difference]: Finished difference. Result has 478 places, 1061 transitions, 25472 flow [2024-11-09 10:49:30,652 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} [2024-11-09 10:49:30,652 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 456 predicate places. [2024-11-09 10:49:30,652 INFO L471 AbstractCegarLoop]: Abstraction has has 478 places, 1061 transitions, 25472 flow [2024-11-09 10:49:30,653 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) [2024-11-09 10:49:30,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:30,653 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:30,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-09 10:49:30,853 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 [2024-11-09 10:49:30,853 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)] === [2024-11-09 10:49:30,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:30,854 INFO L85 PathProgramCache]: Analyzing trace with hash -546081856, now seen corresponding path program 54 times [2024-11-09 10:49:30,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:30,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619376245] [2024-11-09 10:49:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:30,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:30,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:30,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619376245] [2024-11-09 10:49:30,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619376245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:30,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897915618] [2024-11-09 10:49:30,917 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:49:30,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:30,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:30,918 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) [2024-11-09 10:49:30,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-09 10:49:30,976 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 10:49:30,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:30,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:49:30,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:31,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:31,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897915618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:31,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:31,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 10:49:31,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571518084] [2024-11-09 10:49:31,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:31,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:49:31,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:31,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:49:31,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:49:31,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:31,054 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) [2024-11-09 10:49:31,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:31,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:31,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:32,592 INFO L124 PetriNetUnfolderBase]: 2147/3631 cut-off events. [2024-11-09 10:49:32,592 INFO L125 PetriNetUnfolderBase]: For 160639/160639 co-relation queries the response was YES. [2024-11-09 10:49:32,630 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. [2024-11-09 10:49:32,651 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 610 selfloop transitions, 479 changer transitions 4/1094 dead transitions. [2024-11-09 10:49:32,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 1094 transitions, 27897 flow [2024-11-09 10:49:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 10:49:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 10:49:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 163 transitions. [2024-11-09 10:49:32,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42894736842105263 [2024-11-09 10:49:32,652 INFO L175 Difference]: Start difference. First operand has 478 places, 1061 transitions, 25472 flow. Second operand 19 states and 163 transitions. [2024-11-09 10:49:32,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 1094 transitions, 27897 flow [2024-11-09 10:49:33,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1094 transitions, 25726 flow, removed 858 selfloop flow, removed 12 redundant places. [2024-11-09 10:49:33,839 INFO L231 Difference]: Finished difference. Result has 486 places, 1059 transitions, 24277 flow [2024-11-09 10:49:33,839 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} [2024-11-09 10:49:33,840 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 464 predicate places. [2024-11-09 10:49:33,840 INFO L471 AbstractCegarLoop]: Abstraction has has 486 places, 1059 transitions, 24277 flow [2024-11-09 10:49:33,840 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) [2024-11-09 10:49:33,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:33,840 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:33,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-09 10:49:34,040 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 [2024-11-09 10:49:34,041 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)] === [2024-11-09 10:49:34,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash -523508115, now seen corresponding path program 55 times [2024-11-09 10:49:34,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:34,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704671137] [2024-11-09 10:49:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:34,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:34,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:34,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:34,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704671137] [2024-11-09 10:49:34,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704671137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:34,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547860159] [2024-11-09 10:49:34,125 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:49:34,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:34,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:34,127 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) [2024-11-09 10:49:34,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-09 10:49:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:34,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:49:34,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:34,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:34,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547860159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:34,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:34,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-09 10:49:34,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645820563] [2024-11-09 10:49:34,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:34,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:49:34,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:49:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:49:34,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:34,266 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) [2024-11-09 10:49:34,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:34,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:34,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand