./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.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 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:41:30,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:41:30,774 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:41:30,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:41:30,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:41:30,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:41:30,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:41:30,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:41:30,812 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:41:30,814 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:41:30,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:41:30,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:41:30,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:41:30,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:41:30,815 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:41:30,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:41:30,818 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:41:30,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:41:30,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:41:30,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:41:30,819 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:41:30,819 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:41:30,819 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:41:30,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:41:30,820 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:41:30,820 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:41:30,820 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:41:30,820 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:41:30,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:41:30,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:41:30,820 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:41:30,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:41:30,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:41:30,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:41:30,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:41:30,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:41:30,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:41:30,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:41:30,822 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:41:30,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:41:30,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:41:30,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:41:30,824 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2024-11-20 17:41:31,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:41:31,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:41:31,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:41:31,066 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:41:31,067 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:41:31,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-20 17:41:32,329 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:41:32,490 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:41:32,491 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-20 17:41:32,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8d68612/e6f77329216f43c9a9bdc3501ef7e63a/FLAG3b715d967 [2024-11-20 17:41:32,509 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8d68612/e6f77329216f43c9a9bdc3501ef7e63a [2024-11-20 17:41:32,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:41:32,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:41:32,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:41:32,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:41:32,520 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:41:32,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1bfd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32, skipping insertion in model container [2024-11-20 17:41:32,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,539 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:41:32,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:41:32,702 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:41:32,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:41:32,739 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:41:32,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32 WrapperNode [2024-11-20 17:41:32,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:41:32,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:41:32,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:41:32,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:41:32,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,766 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-11-20 17:41:32,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:41:32,767 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:41:32,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:41:32,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:41:32,776 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,777 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,788 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 17:41:32,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,789 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,792 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:41:32,799 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:41:32,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:41:32,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:41:32,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (1/1) ... [2024-11-20 17:41:32,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:41:32,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:32,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 17:41:32,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 17:41:32,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:41:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 17:41:32,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 17:41:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 17:41:32,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 17:41:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 17:41:32,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 17:41:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:41:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:41:32,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:41:32,867 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:41:32,953 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:41:32,955 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:41:33,101 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:41:33,101 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:41:33,194 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:41:33,194 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-20 17:41:33,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:41:33 BoogieIcfgContainer [2024-11-20 17:41:33,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:41:33,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:41:33,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:41:33,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:41:33,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:41:32" (1/3) ... [2024-11-20 17:41:33,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174f0a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:41:33, skipping insertion in model container [2024-11-20 17:41:33,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:41:32" (2/3) ... [2024-11-20 17:41:33,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174f0a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:41:33, skipping insertion in model container [2024-11-20 17:41:33,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:41:33" (3/3) ... [2024-11-20 17:41:33,202 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2024-11-20 17:41:33,219 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:41:33,219 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 17:41:33,219 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:41:33,266 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 17:41:33,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2024-11-20 17:41:33,330 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2024-11-20 17:41:33,331 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 17:41:33,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-11-20 17:41:33,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2024-11-20 17:41:33,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2024-11-20 17:41:33,349 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:41:33,355 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;@7a50b552, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:41:33,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-20 17:41:33,366 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:41:33,368 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-20 17:41:33,368 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 17:41:33,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:33,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:33,370 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:33,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:33,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1751895252, now seen corresponding path program 1 times [2024-11-20 17:41:33,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:33,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214860930] [2024-11-20 17:41:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:33,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:34,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:34,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214860930] [2024-11-20 17:41:34,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214860930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:34,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:34,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:41:34,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850098787] [2024-11-20 17:41:34,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:34,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:41:34,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:34,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:41:34,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:41:34,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:34,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:34,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:34,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:34,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:34,219 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2024-11-20 17:41:34,219 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-20 17:41:34,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1775 event pairs, 124 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-11-20 17:41:34,229 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2024-11-20 17:41:34,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2024-11-20 17:41:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:41:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:41:34,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-11-20 17:41:34,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-20 17:41:34,243 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 54 transitions. [2024-11-20 17:41:34,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2024-11-20 17:41:34,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 17:41:34,251 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2024-11-20 17:41:34,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2024-11-20 17:41:34,256 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2024-11-20 17:41:34,256 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2024-11-20 17:41:34,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:34,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:34,257 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:34,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:41:34,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:34,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:34,258 INFO L85 PathProgramCache]: Analyzing trace with hash 476691239, now seen corresponding path program 1 times [2024-11-20 17:41:34,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:34,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626653376] [2024-11-20 17:41:34,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:34,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:34,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:34,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626653376] [2024-11-20 17:41:34,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626653376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:34,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:34,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:34,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836719578] [2024-11-20 17:41:34,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:34,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:34,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:34,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:34,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:34,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:34,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:34,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:34,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:34,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:34,551 INFO L124 PetriNetUnfolderBase]: 520/743 cut-off events. [2024-11-20 17:41:34,552 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-20 17:41:34,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 743 events. 520/743 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2444 event pairs, 203 based on Foata normal form. 16/759 useless extension candidates. Maximal degree in co-relation 529. Up to 536 conditions per place. [2024-11-20 17:41:34,558 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-11-20 17:41:34,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 58 transitions, 287 flow [2024-11-20 17:41:34,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:34,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-20 17:41:34,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-11-20 17:41:34,562 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 5 states and 76 transitions. [2024-11-20 17:41:34,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 58 transitions, 287 flow [2024-11-20 17:41:34,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:41:34,565 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 156 flow [2024-11-20 17:41:34,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=31, PETRI_TRANSITIONS=34} [2024-11-20 17:41:34,568 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-11-20 17:41:34,568 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 156 flow [2024-11-20 17:41:34,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:34,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:34,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:34,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:41:34,568 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:34,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2146806399, now seen corresponding path program 2 times [2024-11-20 17:41:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:34,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611701194] [2024-11-20 17:41:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:34,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:34,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:34,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611701194] [2024-11-20 17:41:34,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611701194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:34,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028735125] [2024-11-20 17:41:34,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:41:34,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:34,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:34,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:34,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 17:41:34,741 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:34,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:34,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 17:41:34,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:34,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:34,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028735125] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:34,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:41:34,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 7 [2024-11-20 17:41:34,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218956885] [2024-11-20 17:41:34,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:34,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:41:34,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:34,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:41:34,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 17:41:34,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:34,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:34,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:34,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:34,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:35,018 INFO L124 PetriNetUnfolderBase]: 581/828 cut-off events. [2024-11-20 17:41:35,019 INFO L125 PetriNetUnfolderBase]: For 837/837 co-relation queries the response was YES. [2024-11-20 17:41:35,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2671 conditions, 828 events. 581/828 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2772 event pairs, 136 based on Foata normal form. 24/852 useless extension candidates. Maximal degree in co-relation 2009. Up to 484 conditions per place. [2024-11-20 17:41:35,025 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 55 selfloop transitions, 7 changer transitions 1/64 dead transitions. [2024-11-20 17:41:35,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 64 transitions, 402 flow [2024-11-20 17:41:35,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:41:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:41:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-20 17:41:35,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-11-20 17:41:35,027 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 156 flow. Second operand 4 states and 68 transitions. [2024-11-20 17:41:35,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 64 transitions, 402 flow [2024-11-20 17:41:35,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 64 transitions, 388 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-11-20 17:41:35,031 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 181 flow [2024-11-20 17:41:35,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2024-11-20 17:41:35,032 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-11-20 17:41:35,032 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 181 flow [2024-11-20 17:41:35,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:35,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:35,033 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:35,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:35,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:35,234 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:35,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:35,235 INFO L85 PathProgramCache]: Analyzing trace with hash 64190845, now seen corresponding path program 3 times [2024-11-20 17:41:35,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:35,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068819721] [2024-11-20 17:41:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:35,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:35,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:35,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068819721] [2024-11-20 17:41:35,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068819721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:35,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:35,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:35,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261120260] [2024-11-20 17:41:35,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:35,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:35,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:35,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:35,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:35,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:35,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:35,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:35,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:35,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:35,544 INFO L124 PetriNetUnfolderBase]: 706/997 cut-off events. [2024-11-20 17:41:35,544 INFO L125 PetriNetUnfolderBase]: For 1708/1708 co-relation queries the response was YES. [2024-11-20 17:41:35,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3486 conditions, 997 events. 706/997 cut-off events. For 1708/1708 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3466 event pairs, 240 based on Foata normal form. 16/1013 useless extension candidates. Maximal degree in co-relation 2498. Up to 729 conditions per place. [2024-11-20 17:41:35,552 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 53 selfloop transitions, 16 changer transitions 0/70 dead transitions. [2024-11-20 17:41:35,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 70 transitions, 484 flow [2024-11-20 17:41:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:35,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:35,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-11-20 17:41:35,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-20 17:41:35,555 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 181 flow. Second operand 5 states and 75 transitions. [2024-11-20 17:41:35,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 70 transitions, 484 flow [2024-11-20 17:41:35,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 70 transitions, 467 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-20 17:41:35,566 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 300 flow [2024-11-20 17:41:35,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2024-11-20 17:41:35,568 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-11-20 17:41:35,568 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 300 flow [2024-11-20 17:41:35,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:35,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:35,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:35,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 17:41:35,569 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:35,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:35,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2144322713, now seen corresponding path program 4 times [2024-11-20 17:41:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:35,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584160288] [2024-11-20 17:41:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:35,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:35,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:35,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584160288] [2024-11-20 17:41:35,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584160288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:35,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:35,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:35,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833860403] [2024-11-20 17:41:35,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:35,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:35,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:35,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:35,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:35,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:35,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 300 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:35,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:35,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:35,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:35,861 INFO L124 PetriNetUnfolderBase]: 752/1079 cut-off events. [2024-11-20 17:41:35,862 INFO L125 PetriNetUnfolderBase]: For 2361/2361 co-relation queries the response was YES. [2024-11-20 17:41:35,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4520 conditions, 1079 events. 752/1079 cut-off events. For 2361/2361 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4020 event pairs, 91 based on Foata normal form. 84/1163 useless extension candidates. Maximal degree in co-relation 3245. Up to 535 conditions per place. [2024-11-20 17:41:35,870 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 66 selfloop transitions, 28 changer transitions 3/98 dead transitions. [2024-11-20 17:41:35,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 98 transitions, 764 flow [2024-11-20 17:41:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:41:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:41:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-11-20 17:41:35,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2024-11-20 17:41:35,873 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 300 flow. Second operand 7 states and 113 transitions. [2024-11-20 17:41:35,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 98 transitions, 764 flow [2024-11-20 17:41:35,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 98 transitions, 734 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-20 17:41:35,885 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 474 flow [2024-11-20 17:41:35,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=474, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2024-11-20 17:41:35,887 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-11-20 17:41:35,888 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 474 flow [2024-11-20 17:41:35,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:35,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:35,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:35,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 17:41:35,889 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:35,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:35,892 INFO L85 PathProgramCache]: Analyzing trace with hash -847259184, now seen corresponding path program 1 times [2024-11-20 17:41:35,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:35,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449116195] [2024-11-20 17:41:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:35,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:35,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:35,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449116195] [2024-11-20 17:41:35,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449116195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:35,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:35,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:35,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111116904] [2024-11-20 17:41:35,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:35,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:35,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:35,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:35,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:35,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:35,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 474 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:35,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:35,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:35,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:36,122 INFO L124 PetriNetUnfolderBase]: 745/1083 cut-off events. [2024-11-20 17:41:36,122 INFO L125 PetriNetUnfolderBase]: For 4169/4169 co-relation queries the response was YES. [2024-11-20 17:41:36,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 1083 events. 745/1083 cut-off events. For 4169/4169 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4081 event pairs, 192 based on Foata normal form. 35/1118 useless extension candidates. Maximal degree in co-relation 4271. Up to 660 conditions per place. [2024-11-20 17:41:36,129 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 48 selfloop transitions, 13 changer transitions 26/88 dead transitions. [2024-11-20 17:41:36,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 88 transitions, 774 flow [2024-11-20 17:41:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:36,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-11-20 17:41:36,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-20 17:41:36,131 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 474 flow. Second operand 5 states and 81 transitions. [2024-11-20 17:41:36,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 88 transitions, 774 flow [2024-11-20 17:41:36,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 766 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-20 17:41:36,140 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 441 flow [2024-11-20 17:41:36,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-11-20 17:41:36,141 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-11-20 17:41:36,142 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 441 flow [2024-11-20 17:41:36,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:36,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:36,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:36,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 17:41:36,142 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:36,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:36,143 INFO L85 PathProgramCache]: Analyzing trace with hash -442867849, now seen corresponding path program 5 times [2024-11-20 17:41:36,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:36,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112634084] [2024-11-20 17:41:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:36,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:36,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:36,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112634084] [2024-11-20 17:41:36,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112634084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:36,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:36,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:36,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616068734] [2024-11-20 17:41:36,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:36,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:36,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:36,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:36,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:36,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:36,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 441 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:36,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:36,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:36,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:36,361 INFO L124 PetriNetUnfolderBase]: 628/931 cut-off events. [2024-11-20 17:41:36,361 INFO L125 PetriNetUnfolderBase]: For 4310/4310 co-relation queries the response was YES. [2024-11-20 17:41:36,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 931 events. 628/931 cut-off events. For 4310/4310 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3472 event pairs, 154 based on Foata normal form. 42/973 useless extension candidates. Maximal degree in co-relation 3913. Up to 535 conditions per place. [2024-11-20 17:41:36,368 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 55 selfloop transitions, 14 changer transitions 11/81 dead transitions. [2024-11-20 17:41:36,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 754 flow [2024-11-20 17:41:36,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-20 17:41:36,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2024-11-20 17:41:36,371 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 441 flow. Second operand 5 states and 77 transitions. [2024-11-20 17:41:36,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 754 flow [2024-11-20 17:41:36,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 692 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-20 17:41:36,379 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 444 flow [2024-11-20 17:41:36,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=444, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-11-20 17:41:36,381 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-11-20 17:41:36,381 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 444 flow [2024-11-20 17:41:36,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:36,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:36,382 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:36,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 17:41:36,382 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:36,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:36,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1967052259, now seen corresponding path program 6 times [2024-11-20 17:41:36,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:36,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871840882] [2024-11-20 17:41:36,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:36,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:36,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:36,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871840882] [2024-11-20 17:41:36,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871840882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:36,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:36,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:36,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173866603] [2024-11-20 17:41:36,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:36,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:36,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:36,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:36,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:36,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:36,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 444 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:36,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:36,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:36,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:36,605 INFO L124 PetriNetUnfolderBase]: 659/974 cut-off events. [2024-11-20 17:41:36,605 INFO L125 PetriNetUnfolderBase]: For 5215/5215 co-relation queries the response was YES. [2024-11-20 17:41:36,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4592 conditions, 974 events. 659/974 cut-off events. For 5215/5215 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3556 event pairs, 244 based on Foata normal form. 16/990 useless extension candidates. Maximal degree in co-relation 4292. Up to 712 conditions per place. [2024-11-20 17:41:36,612 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 52 selfloop transitions, 22 changer transitions 4/79 dead transitions. [2024-11-20 17:41:36,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 79 transitions, 810 flow [2024-11-20 17:41:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-11-20 17:41:36,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-20 17:41:36,613 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 444 flow. Second operand 5 states and 69 transitions. [2024-11-20 17:41:36,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 79 transitions, 810 flow [2024-11-20 17:41:36,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 79 transitions, 757 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-20 17:41:36,622 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 580 flow [2024-11-20 17:41:36,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=580, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-11-20 17:41:36,623 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-11-20 17:41:36,623 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 580 flow [2024-11-20 17:41:36,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:36,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:36,623 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:36,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 17:41:36,624 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:36,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash 442458791, now seen corresponding path program 7 times [2024-11-20 17:41:36,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:36,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420880792] [2024-11-20 17:41:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:36,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:36,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:36,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420880792] [2024-11-20 17:41:36,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420880792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:36,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135331143] [2024-11-20 17:41:36,678 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:41:36,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:36,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:36,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:36,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 17:41:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:36,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 17:41:36,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:36,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:36,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135331143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:36,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:36,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 17:41:36,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039115121] [2024-11-20 17:41:36,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:36,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:41:36,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:36,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:41:36,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:41:36,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:36,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 580 flow. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:36,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:36,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:36,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:37,182 INFO L124 PetriNetUnfolderBase]: 946/1383 cut-off events. [2024-11-20 17:41:37,183 INFO L125 PetriNetUnfolderBase]: For 7124/7124 co-relation queries the response was YES. [2024-11-20 17:41:37,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6861 conditions, 1383 events. 946/1383 cut-off events. For 7124/7124 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5390 event pairs, 184 based on Foata normal form. 74/1457 useless extension candidates. Maximal degree in co-relation 6467. Up to 630 conditions per place. [2024-11-20 17:41:37,197 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 76 selfloop transitions, 74 changer transitions 2/153 dead transitions. [2024-11-20 17:41:37,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 153 transitions, 1604 flow [2024-11-20 17:41:37,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:41:37,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:41:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-11-20 17:41:37,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-11-20 17:41:37,199 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 580 flow. Second operand 12 states and 164 transitions. [2024-11-20 17:41:37,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 153 transitions, 1604 flow [2024-11-20 17:41:37,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 153 transitions, 1544 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-20 17:41:37,217 INFO L231 Difference]: Finished difference. Result has 74 places, 103 transitions, 1293 flow [2024-11-20 17:41:37,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1293, PETRI_PLACES=74, PETRI_TRANSITIONS=103} [2024-11-20 17:41:37,218 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-11-20 17:41:37,220 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 103 transitions, 1293 flow [2024-11-20 17:41:37,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:37,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:37,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:37,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 17:41:37,421 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,SelfDestructingSolverStorable8 [2024-11-20 17:41:37,422 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:37,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:37,422 INFO L85 PathProgramCache]: Analyzing trace with hash -560455765, now seen corresponding path program 8 times [2024-11-20 17:41:37,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:37,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948826591] [2024-11-20 17:41:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:37,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:37,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:37,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948826591] [2024-11-20 17:41:37,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948826591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:41:37,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:41:37,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:41:37,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077722369] [2024-11-20 17:41:37,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:41:37,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:41:37,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:37,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:41:37,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:41:37,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:37,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 103 transitions, 1293 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:37,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:37,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:37,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:37,704 INFO L124 PetriNetUnfolderBase]: 933/1376 cut-off events. [2024-11-20 17:41:37,704 INFO L125 PetriNetUnfolderBase]: For 12219/12219 co-relation queries the response was YES. [2024-11-20 17:41:37,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8465 conditions, 1376 events. 933/1376 cut-off events. For 12219/12219 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5358 event pairs, 273 based on Foata normal form. 22/1398 useless extension candidates. Maximal degree in co-relation 7752. Up to 900 conditions per place. [2024-11-20 17:41:37,718 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 86 selfloop transitions, 22 changer transitions 12/121 dead transitions. [2024-11-20 17:41:37,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 121 transitions, 1694 flow [2024-11-20 17:41:37,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:41:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:41:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-11-20 17:41:37,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-20 17:41:37,720 INFO L175 Difference]: Start difference. First operand has 74 places, 103 transitions, 1293 flow. Second operand 5 states and 66 transitions. [2024-11-20 17:41:37,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 121 transitions, 1694 flow [2024-11-20 17:41:37,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 121 transitions, 1563 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-11-20 17:41:37,744 INFO L231 Difference]: Finished difference. Result has 77 places, 100 transitions, 1216 flow [2024-11-20 17:41:37,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1216, PETRI_PLACES=77, PETRI_TRANSITIONS=100} [2024-11-20 17:41:37,747 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-11-20 17:41:37,747 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 100 transitions, 1216 flow [2024-11-20 17:41:37,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:37,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:37,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:37,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 17:41:37,748 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:37,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:37,749 INFO L85 PathProgramCache]: Analyzing trace with hash 557123088, now seen corresponding path program 1 times [2024-11-20 17:41:37,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:37,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333202698] [2024-11-20 17:41:37,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:37,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:37,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:37,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333202698] [2024-11-20 17:41:37,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333202698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:37,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656581453] [2024-11-20 17:41:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:37,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:37,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:37,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:37,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 17:41:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:37,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:41:37,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:37,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:37,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656581453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:37,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:37,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-20 17:41:37,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139939172] [2024-11-20 17:41:37,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:37,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 17:41:37,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:37,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 17:41:37,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-20 17:41:37,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:37,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 100 transitions, 1216 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:37,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:37,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:37,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:38,173 INFO L124 PetriNetUnfolderBase]: 966/1386 cut-off events. [2024-11-20 17:41:38,174 INFO L125 PetriNetUnfolderBase]: For 11637/11637 co-relation queries the response was YES. [2024-11-20 17:41:38,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8394 conditions, 1386 events. 966/1386 cut-off events. For 11637/11637 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5225 event pairs, 221 based on Foata normal form. 38/1424 useless extension candidates. Maximal degree in co-relation 7693. Up to 844 conditions per place. [2024-11-20 17:41:38,191 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 84 selfloop transitions, 59 changer transitions 1/145 dead transitions. [2024-11-20 17:41:38,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 145 transitions, 1969 flow [2024-11-20 17:41:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:41:38,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:41:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-20 17:41:38,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-20 17:41:38,193 INFO L175 Difference]: Start difference. First operand has 77 places, 100 transitions, 1216 flow. Second operand 6 states and 87 transitions. [2024-11-20 17:41:38,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 145 transitions, 1969 flow [2024-11-20 17:41:38,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 145 transitions, 1871 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-20 17:41:38,215 INFO L231 Difference]: Finished difference. Result has 78 places, 115 transitions, 1515 flow [2024-11-20 17:41:38,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1515, PETRI_PLACES=78, PETRI_TRANSITIONS=115} [2024-11-20 17:41:38,216 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-11-20 17:41:38,216 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 115 transitions, 1515 flow [2024-11-20 17:41:38,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:38,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:38,216 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:38,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:38,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:38,417 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:38,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1437217960, now seen corresponding path program 1 times [2024-11-20 17:41:38,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:38,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246989767] [2024-11-20 17:41:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:38,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:38,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:38,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246989767] [2024-11-20 17:41:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246989767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:38,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041546352] [2024-11-20 17:41:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:38,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:38,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:38,596 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:38,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 17:41:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:38,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 17:41:38,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:38,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:39,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041546352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:39,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:39,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-20 17:41:39,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471064663] [2024-11-20 17:41:39,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:39,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:39,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:39,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:39,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:39,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:39,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 115 transitions, 1515 flow. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:39,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:39,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:39,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:39,582 INFO L124 PetriNetUnfolderBase]: 1456/2098 cut-off events. [2024-11-20 17:41:39,582 INFO L125 PetriNetUnfolderBase]: For 16963/16963 co-relation queries the response was YES. [2024-11-20 17:41:39,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12871 conditions, 2098 events. 1456/2098 cut-off events. For 16963/16963 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8428 event pairs, 154 based on Foata normal form. 2/2100 useless extension candidates. Maximal degree in co-relation 12074. Up to 1478 conditions per place. [2024-11-20 17:41:39,599 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 142 selfloop transitions, 61 changer transitions 2/206 dead transitions. [2024-11-20 17:41:39,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 206 transitions, 2681 flow [2024-11-20 17:41:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:41:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:41:39,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-11-20 17:41:39,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.588477366255144 [2024-11-20 17:41:39,601 INFO L175 Difference]: Start difference. First operand has 78 places, 115 transitions, 1515 flow. Second operand 9 states and 143 transitions. [2024-11-20 17:41:39,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 206 transitions, 2681 flow [2024-11-20 17:41:39,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 206 transitions, 2499 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-11-20 17:41:39,637 INFO L231 Difference]: Finished difference. Result has 84 places, 152 transitions, 2054 flow [2024-11-20 17:41:39,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2054, PETRI_PLACES=84, PETRI_TRANSITIONS=152} [2024-11-20 17:41:39,638 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-11-20 17:41:39,639 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 152 transitions, 2054 flow [2024-11-20 17:41:39,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:39,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:39,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:39,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:39,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:39,840 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:39,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1276024520, now seen corresponding path program 2 times [2024-11-20 17:41:39,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:39,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205116505] [2024-11-20 17:41:39,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:39,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:40,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:40,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205116505] [2024-11-20 17:41:40,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205116505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:40,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123814134] [2024-11-20 17:41:40,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:41:40,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:40,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:40,007 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:40,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 17:41:40,056 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:40,056 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:40,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 17:41:40,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:40,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:40,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123814134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:40,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:40,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-20 17:41:40,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676109207] [2024-11-20 17:41:40,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:40,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:40,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:40,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:40,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:40,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:40,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 152 transitions, 2054 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:40,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:40,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:40,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:40,995 INFO L124 PetriNetUnfolderBase]: 1800/2598 cut-off events. [2024-11-20 17:41:40,995 INFO L125 PetriNetUnfolderBase]: For 24593/24593 co-relation queries the response was YES. [2024-11-20 17:41:41,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16741 conditions, 2598 events. 1800/2598 cut-off events. For 24593/24593 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10796 event pairs, 279 based on Foata normal form. 2/2600 useless extension candidates. Maximal degree in co-relation 16040. Up to 1967 conditions per place. [2024-11-20 17:41:41,021 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 158 selfloop transitions, 63 changer transitions 2/224 dead transitions. [2024-11-20 17:41:41,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 224 transitions, 3104 flow [2024-11-20 17:41:41,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:41:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:41:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-20 17:41:41,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-11-20 17:41:41,023 INFO L175 Difference]: Start difference. First operand has 84 places, 152 transitions, 2054 flow. Second operand 9 states and 140 transitions. [2024-11-20 17:41:41,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 224 transitions, 3104 flow [2024-11-20 17:41:41,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 224 transitions, 2904 flow, removed 81 selfloop flow, removed 2 redundant places. [2024-11-20 17:41:41,083 INFO L231 Difference]: Finished difference. Result has 93 places, 173 transitions, 2361 flow [2024-11-20 17:41:41,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2361, PETRI_PLACES=93, PETRI_TRANSITIONS=173} [2024-11-20 17:41:41,085 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-11-20 17:41:41,085 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 173 transitions, 2361 flow [2024-11-20 17:41:41,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:41,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:41,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:41,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 17:41:41,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-20 17:41:41,290 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:41,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:41,290 INFO L85 PathProgramCache]: Analyzing trace with hash 59592076, now seen corresponding path program 3 times [2024-11-20 17:41:41,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:41,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272901483] [2024-11-20 17:41:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:41,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:41,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:41,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:41,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272901483] [2024-11-20 17:41:41,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272901483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:41,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644679156] [2024-11-20 17:41:41,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:41:41,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:41,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:41,464 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:41,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 17:41:41,522 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 17:41:41,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:41,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 17:41:41,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:41,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:42,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644679156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:42,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:42,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-20 17:41:42,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165089540] [2024-11-20 17:41:42,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:42,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:41:42,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:42,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:41:42,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:41:42,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:42,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 173 transitions, 2361 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:42,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:42,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:42,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:42,483 INFO L124 PetriNetUnfolderBase]: 2212/3198 cut-off events. [2024-11-20 17:41:42,483 INFO L125 PetriNetUnfolderBase]: For 30153/30153 co-relation queries the response was YES. [2024-11-20 17:41:42,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20407 conditions, 3198 events. 2212/3198 cut-off events. For 30153/30153 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13883 event pairs, 446 based on Foata normal form. 2/3200 useless extension candidates. Maximal degree in co-relation 19823. Up to 2670 conditions per place. [2024-11-20 17:41:42,508 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 198 selfloop transitions, 57 changer transitions 2/258 dead transitions. [2024-11-20 17:41:42,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 258 transitions, 3646 flow [2024-11-20 17:41:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:41:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:41:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-20 17:41:42,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-11-20 17:41:42,510 INFO L175 Difference]: Start difference. First operand has 93 places, 173 transitions, 2361 flow. Second operand 9 states and 140 transitions. [2024-11-20 17:41:42,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 258 transitions, 3646 flow [2024-11-20 17:41:42,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 258 transitions, 3469 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-11-20 17:41:42,568 INFO L231 Difference]: Finished difference. Result has 103 places, 206 transitions, 2862 flow [2024-11-20 17:41:42,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2862, PETRI_PLACES=103, PETRI_TRANSITIONS=206} [2024-11-20 17:41:42,569 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-11-20 17:41:42,569 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 206 transitions, 2862 flow [2024-11-20 17:41:42,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:42,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:42,570 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:42,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:42,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:42,771 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:42,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:42,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1636981364, now seen corresponding path program 4 times [2024-11-20 17:41:42,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:42,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295126528] [2024-11-20 17:41:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:42,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:42,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:42,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295126528] [2024-11-20 17:41:42,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295126528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:42,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495238165] [2024-11-20 17:41:42,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:41:42,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:42,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:42,897 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:42,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 17:41:42,943 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:41:42,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:42,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 17:41:42,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:43,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:43,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495238165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:43,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:43,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-20 17:41:43,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277970476] [2024-11-20 17:41:43,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:43,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 17:41:43,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 17:41:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-20 17:41:43,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:43,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 206 transitions, 2862 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:43,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:43,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:43,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:43,906 INFO L124 PetriNetUnfolderBase]: 2452/3550 cut-off events. [2024-11-20 17:41:43,906 INFO L125 PetriNetUnfolderBase]: For 35723/35723 co-relation queries the response was YES. [2024-11-20 17:41:43,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23135 conditions, 3550 events. 2452/3550 cut-off events. For 35723/35723 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15731 event pairs, 550 based on Foata normal form. 2/3552 useless extension candidates. Maximal degree in co-relation 22542. Up to 3104 conditions per place. [2024-11-20 17:41:43,940 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 213 selfloop transitions, 53 changer transitions 2/269 dead transitions. [2024-11-20 17:41:43,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 269 transitions, 4001 flow [2024-11-20 17:41:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:41:43,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:41:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-11-20 17:41:43,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5596707818930041 [2024-11-20 17:41:43,941 INFO L175 Difference]: Start difference. First operand has 103 places, 206 transitions, 2862 flow. Second operand 9 states and 136 transitions. [2024-11-20 17:41:43,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 269 transitions, 4001 flow [2024-11-20 17:41:44,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 269 transitions, 3773 flow, removed 102 selfloop flow, removed 1 redundant places. [2024-11-20 17:41:44,076 INFO L231 Difference]: Finished difference. Result has 113 places, 221 transitions, 3066 flow [2024-11-20 17:41:44,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3066, PETRI_PLACES=113, PETRI_TRANSITIONS=221} [2024-11-20 17:41:44,077 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-11-20 17:41:44,077 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 221 transitions, 3066 flow [2024-11-20 17:41:44,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:44,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:44,078 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:44,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 17:41:44,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:44,278 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:44,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:44,279 INFO L85 PathProgramCache]: Analyzing trace with hash 320976776, now seen corresponding path program 5 times [2024-11-20 17:41:44,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:44,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644365210] [2024-11-20 17:41:44,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:44,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:44,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:44,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644365210] [2024-11-20 17:41:44,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644365210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:44,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285980348] [2024-11-20 17:41:44,389 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:41:44,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:44,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:44,391 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:44,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 17:41:44,436 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:44,437 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:44,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 17:41:44,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:44,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:45,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285980348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:45,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:45,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-20 17:41:45,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020124110] [2024-11-20 17:41:45,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:45,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:45,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:45,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:45,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:45,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:45,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 221 transitions, 3066 flow. Second operand has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:45,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:45,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:45,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:46,059 INFO L124 PetriNetUnfolderBase]: 2876/4162 cut-off events. [2024-11-20 17:41:46,060 INFO L125 PetriNetUnfolderBase]: For 44740/44740 co-relation queries the response was YES. [2024-11-20 17:41:46,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27518 conditions, 4162 events. 2876/4162 cut-off events. For 44740/44740 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 19011 event pairs, 681 based on Foata normal form. 2/4164 useless extension candidates. Maximal degree in co-relation 26881. Up to 3629 conditions per place. [2024-11-20 17:41:46,097 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 241 selfloop transitions, 60 changer transitions 2/304 dead transitions. [2024-11-20 17:41:46,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 304 transitions, 4638 flow [2024-11-20 17:41:46,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:41:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:41:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-11-20 17:41:46,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-20 17:41:46,098 INFO L175 Difference]: Start difference. First operand has 113 places, 221 transitions, 3066 flow. Second operand 9 states and 135 transitions. [2024-11-20 17:41:46,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 304 transitions, 4638 flow [2024-11-20 17:41:46,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 304 transitions, 4432 flow, removed 81 selfloop flow, removed 2 redundant places. [2024-11-20 17:41:46,161 INFO L231 Difference]: Finished difference. Result has 123 places, 257 transitions, 3713 flow [2024-11-20 17:41:46,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3713, PETRI_PLACES=123, PETRI_TRANSITIONS=257} [2024-11-20 17:41:46,161 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-11-20 17:41:46,162 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 257 transitions, 3713 flow [2024-11-20 17:41:46,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:46,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:46,163 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:46,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 17:41:46,363 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,SelfDestructingSolverStorable15 [2024-11-20 17:41:46,364 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:46,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:46,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1673613192, now seen corresponding path program 6 times [2024-11-20 17:41:46,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:46,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355545119] [2024-11-20 17:41:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:46,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:46,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:46,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355545119] [2024-11-20 17:41:46,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355545119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:46,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140237767] [2024-11-20 17:41:46,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:41:46,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:46,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:46,485 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:46,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 17:41:46,540 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-20 17:41:46,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:46,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 17:41:46,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:46,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:47,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140237767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:47,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:47,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-20 17:41:47,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883384008] [2024-11-20 17:41:47,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:47,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:41:47,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:47,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:41:47,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:41:47,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:47,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 257 transitions, 3713 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:47,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:47,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:47,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:48,199 INFO L124 PetriNetUnfolderBase]: 3116/4514 cut-off events. [2024-11-20 17:41:48,199 INFO L125 PetriNetUnfolderBase]: For 51269/51269 co-relation queries the response was YES. [2024-11-20 17:41:48,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30513 conditions, 4514 events. 3116/4514 cut-off events. For 51269/51269 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 20996 event pairs, 787 based on Foata normal form. 2/4516 useless extension candidates. Maximal degree in co-relation 29843. Up to 4085 conditions per place. [2024-11-20 17:41:48,289 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 261 selfloop transitions, 54 changer transitions 2/318 dead transitions. [2024-11-20 17:41:48,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 318 transitions, 5040 flow [2024-11-20 17:41:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:41:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:41:48,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-11-20 17:41:48,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.551440329218107 [2024-11-20 17:41:48,291 INFO L175 Difference]: Start difference. First operand has 123 places, 257 transitions, 3713 flow. Second operand 9 states and 134 transitions. [2024-11-20 17:41:48,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 318 transitions, 5040 flow [2024-11-20 17:41:48,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 318 transitions, 4740 flow, removed 138 selfloop flow, removed 1 redundant places. [2024-11-20 17:41:48,414 INFO L231 Difference]: Finished difference. Result has 133 places, 272 transitions, 3907 flow [2024-11-20 17:41:48,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3907, PETRI_PLACES=133, PETRI_TRANSITIONS=272} [2024-11-20 17:41:48,415 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-11-20 17:41:48,415 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 272 transitions, 3907 flow [2024-11-20 17:41:48,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:48,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:48,416 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:48,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:48,616 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,SelfDestructingSolverStorable16 [2024-11-20 17:41:48,617 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:48,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash 313622787, now seen corresponding path program 7 times [2024-11-20 17:41:48,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:48,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130055323] [2024-11-20 17:41:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:48,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:48,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:41:48,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:48,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130055323] [2024-11-20 17:41:48,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130055323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:48,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185458311] [2024-11-20 17:41:48,728 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:41:48,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:48,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:48,730 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:48,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 17:41:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:48,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:41:48,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:41:48,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:41:48,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185458311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:48,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:48,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 17:41:48,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296414898] [2024-11-20 17:41:48,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:48,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:48,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:48,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:48,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:48,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:48,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 272 transitions, 3907 flow. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:48,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:48,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:48,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:49,913 INFO L124 PetriNetUnfolderBase]: 4837/6868 cut-off events. [2024-11-20 17:41:49,913 INFO L125 PetriNetUnfolderBase]: For 84374/84374 co-relation queries the response was YES. [2024-11-20 17:41:49,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45961 conditions, 6868 events. 4837/6868 cut-off events. For 84374/84374 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 32861 event pairs, 466 based on Foata normal form. 48/6916 useless extension candidates. Maximal degree in co-relation 44580. Up to 2243 conditions per place. [2024-11-20 17:41:49,963 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 537 selfloop transitions, 134 changer transitions 0/672 dead transitions. [2024-11-20 17:41:49,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 672 transitions, 10650 flow [2024-11-20 17:41:49,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 17:41:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 17:41:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-11-20 17:41:49,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-11-20 17:41:49,965 INFO L175 Difference]: Start difference. First operand has 133 places, 272 transitions, 3907 flow. Second operand 13 states and 204 transitions. [2024-11-20 17:41:49,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 672 transitions, 10650 flow [2024-11-20 17:41:50,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 672 transitions, 9942 flow, removed 330 selfloop flow, removed 2 redundant places. [2024-11-20 17:41:50,072 INFO L231 Difference]: Finished difference. Result has 151 places, 348 transitions, 5175 flow [2024-11-20 17:41:50,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3638, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5175, PETRI_PLACES=151, PETRI_TRANSITIONS=348} [2024-11-20 17:41:50,073 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-11-20 17:41:50,073 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 348 transitions, 5175 flow [2024-11-20 17:41:50,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:50,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:50,073 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:50,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:50,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 17:41:50,274 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:50,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:50,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1782818654, now seen corresponding path program 8 times [2024-11-20 17:41:50,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:50,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684150644] [2024-11-20 17:41:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:50,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:41:50,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:50,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684150644] [2024-11-20 17:41:50,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684150644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:50,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426679543] [2024-11-20 17:41:50,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:41:50,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:50,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:50,382 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:50,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 17:41:50,423 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:41:50,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:50,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:41:50,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:50,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:50,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426679543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:50,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:50,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-20 17:41:50,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688980579] [2024-11-20 17:41:50,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:50,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 17:41:50,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:50,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 17:41:50,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-20 17:41:50,532 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:50,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 348 transitions, 5175 flow. Second operand has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:50,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:50,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:50,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:52,982 INFO L124 PetriNetUnfolderBase]: 6514/9210 cut-off events. [2024-11-20 17:41:52,983 INFO L125 PetriNetUnfolderBase]: For 127524/127524 co-relation queries the response was YES. [2024-11-20 17:41:53,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69436 conditions, 9210 events. 6514/9210 cut-off events. For 127524/127524 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 45615 event pairs, 340 based on Foata normal form. 142/9352 useless extension candidates. Maximal degree in co-relation 67061. Up to 3035 conditions per place. [2024-11-20 17:41:53,167 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 604 selfloop transitions, 492 changer transitions 0/1097 dead transitions. [2024-11-20 17:41:53,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1097 transitions, 17747 flow [2024-11-20 17:41:53,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-20 17:41:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-20 17:41:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 678 transitions. [2024-11-20 17:41:53,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45656565656565656 [2024-11-20 17:41:53,170 INFO L175 Difference]: Start difference. First operand has 151 places, 348 transitions, 5175 flow. Second operand 55 states and 678 transitions. [2024-11-20 17:41:53,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1097 transitions, 17747 flow [2024-11-20 17:41:53,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1097 transitions, 17037 flow, removed 302 selfloop flow, removed 1 redundant places. [2024-11-20 17:41:53,436 INFO L231 Difference]: Finished difference. Result has 229 places, 678 transitions, 11611 flow [2024-11-20 17:41:53,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4877, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=11611, PETRI_PLACES=229, PETRI_TRANSITIONS=678} [2024-11-20 17:41:53,437 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-11-20 17:41:53,437 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 678 transitions, 11611 flow [2024-11-20 17:41:53,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:53,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:53,437 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:53,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 17:41:53,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:53,638 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:53,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:53,638 INFO L85 PathProgramCache]: Analyzing trace with hash 900764061, now seen corresponding path program 9 times [2024-11-20 17:41:53,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:53,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728769587] [2024-11-20 17:41:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:53,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:53,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:53,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728769587] [2024-11-20 17:41:53,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728769587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:53,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854154783] [2024-11-20 17:41:53,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:41:53,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:53,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:53,734 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:53,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 17:41:53,778 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-20 17:41:53,779 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:53,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:41:53,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:53,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:41:53,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854154783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:53,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:53,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-20 17:41:53,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918784162] [2024-11-20 17:41:53,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:53,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:41:53,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:53,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:41:53,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:41:53,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:53,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 678 transitions, 11611 flow. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:53,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:53,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:53,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:41:56,157 INFO L124 PetriNetUnfolderBase]: 6754/9618 cut-off events. [2024-11-20 17:41:56,157 INFO L125 PetriNetUnfolderBase]: For 288191/288191 co-relation queries the response was YES. [2024-11-20 17:41:56,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86887 conditions, 9618 events. 6754/9618 cut-off events. For 288191/288191 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 48799 event pairs, 1403 based on Foata normal form. 112/9730 useless extension candidates. Maximal degree in co-relation 86284. Up to 4680 conditions per place. [2024-11-20 17:41:56,294 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 517 selfloop transitions, 351 changer transitions 6/875 dead transitions. [2024-11-20 17:41:56,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 875 transitions, 16390 flow [2024-11-20 17:41:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 17:41:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 17:41:56,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 201 transitions. [2024-11-20 17:41:56,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-11-20 17:41:56,297 INFO L175 Difference]: Start difference. First operand has 229 places, 678 transitions, 11611 flow. Second operand 15 states and 201 transitions. [2024-11-20 17:41:56,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 875 transitions, 16390 flow [2024-11-20 17:41:57,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 875 transitions, 14068 flow, removed 938 selfloop flow, removed 4 redundant places. [2024-11-20 17:41:57,626 INFO L231 Difference]: Finished difference. Result has 245 places, 739 transitions, 11487 flow [2024-11-20 17:41:57,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9360, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11487, PETRI_PLACES=245, PETRI_TRANSITIONS=739} [2024-11-20 17:41:57,627 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-11-20 17:41:57,627 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 739 transitions, 11487 flow [2024-11-20 17:41:57,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:57,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:41:57,627 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:41:57,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-20 17:41:57,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:57,827 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:41:57,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:41:57,828 INFO L85 PathProgramCache]: Analyzing trace with hash -146329803, now seen corresponding path program 10 times [2024-11-20 17:41:57,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:41:57,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798905979] [2024-11-20 17:41:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:41:57,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:41:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:41:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:41:57,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:41:57,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798905979] [2024-11-20 17:41:57,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798905979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:41:57,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662211149] [2024-11-20 17:41:57,922 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:41:57,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:41:57,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:41:57,924 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:41:57,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 17:41:57,967 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:41:57,968 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:41:57,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:41:57,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:41:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:41:58,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:41:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:41:58,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662211149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:41:58,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:41:58,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 17:41:58,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655951022] [2024-11-20 17:41:58,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:41:58,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:41:58,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:41:58,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:41:58,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:41:58,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:41:58,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 739 transitions, 11487 flow. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:41:58,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:41:58,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:41:58,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:00,368 INFO L124 PetriNetUnfolderBase]: 7092/10202 cut-off events. [2024-11-20 17:42:00,368 INFO L125 PetriNetUnfolderBase]: For 405011/405011 co-relation queries the response was YES. [2024-11-20 17:42:00,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92083 conditions, 10202 events. 7092/10202 cut-off events. For 405011/405011 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 53561 event pairs, 1741 based on Foata normal form. 172/10372 useless extension candidates. Maximal degree in co-relation 91632. Up to 5947 conditions per place. [2024-11-20 17:42:00,480 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 663 selfloop transitions, 250 changer transitions 39/953 dead transitions. [2024-11-20 17:42:00,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 953 transitions, 16972 flow [2024-11-20 17:42:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 17:42:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 17:42:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-11-20 17:42:00,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-11-20 17:42:00,481 INFO L175 Difference]: Start difference. First operand has 245 places, 739 transitions, 11487 flow. Second operand 8 states and 123 transitions. [2024-11-20 17:42:00,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 953 transitions, 16972 flow [2024-11-20 17:42:02,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 953 transitions, 16172 flow, removed 281 selfloop flow, removed 3 redundant places. [2024-11-20 17:42:02,363 INFO L231 Difference]: Finished difference. Result has 253 places, 798 transitions, 12919 flow [2024-11-20 17:42:02,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11029, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12919, PETRI_PLACES=253, PETRI_TRANSITIONS=798} [2024-11-20 17:42:02,364 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-11-20 17:42:02,364 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 798 transitions, 12919 flow [2024-11-20 17:42:02,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:02,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:02,364 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:02,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-20 17:42:02,568 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,SelfDestructingSolverStorable20 [2024-11-20 17:42:02,569 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:42:02,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash 633348975, now seen corresponding path program 11 times [2024-11-20 17:42:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:02,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190418754] [2024-11-20 17:42:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:02,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:02,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190418754] [2024-11-20 17:42:02,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190418754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581155091] [2024-11-20 17:42:02,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:42:02,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:02,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:02,680 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:42:02,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 17:42:02,716 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 17:42:02,717 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:02,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:42:02,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:02,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:02,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581155091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:02,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:02,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-20 17:42:02,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545511075] [2024-11-20 17:42:02,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:02,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 17:42:02,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:02,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 17:42:02,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-20 17:42:02,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:42:02,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 798 transitions, 12919 flow. Second operand has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:02,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:02,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:42:02,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:05,810 INFO L124 PetriNetUnfolderBase]: 8223/11640 cut-off events. [2024-11-20 17:42:05,810 INFO L125 PetriNetUnfolderBase]: For 504908/504908 co-relation queries the response was YES. [2024-11-20 17:42:05,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112897 conditions, 11640 events. 8223/11640 cut-off events. For 504908/504908 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 60476 event pairs, 1463 based on Foata normal form. 86/11724 useless extension candidates. Maximal degree in co-relation 112443. Up to 6709 conditions per place. [2024-11-20 17:42:05,940 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 636 selfloop transitions, 656 changer transitions 0/1293 dead transitions. [2024-11-20 17:42:05,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1293 transitions, 25287 flow [2024-11-20 17:42:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-20 17:42:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-20 17:42:05,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 405 transitions. [2024-11-20 17:42:05,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-11-20 17:42:05,942 INFO L175 Difference]: Start difference. First operand has 253 places, 798 transitions, 12919 flow. Second operand 32 states and 405 transitions. [2024-11-20 17:42:05,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1293 transitions, 25287 flow [2024-11-20 17:42:08,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1293 transitions, 24396 flow, removed 369 selfloop flow, removed 1 redundant places. [2024-11-20 17:42:08,872 INFO L231 Difference]: Finished difference. Result has 291 places, 1091 transitions, 21514 flow [2024-11-20 17:42:08,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=12660, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=21514, PETRI_PLACES=291, PETRI_TRANSITIONS=1091} [2024-11-20 17:42:08,873 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-11-20 17:42:08,873 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 1091 transitions, 21514 flow [2024-11-20 17:42:08,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:08,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:08,873 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:08,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-20 17:42:09,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:09,074 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:42:09,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2086858427, now seen corresponding path program 12 times [2024-11-20 17:42:09,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:09,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678799462] [2024-11-20 17:42:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:09,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:09,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:09,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678799462] [2024-11-20 17:42:09,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678799462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:09,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261608759] [2024-11-20 17:42:09,170 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:42:09,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:09,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:09,172 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:42:09,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 17:42:09,213 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-20 17:42:09,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:09,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:42:09,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:09,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:09,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261608759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:09,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:09,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-20 17:42:09,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332089900] [2024-11-20 17:42:09,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:09,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 17:42:09,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:09,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 17:42:09,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-20 17:42:09,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:42:09,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1091 transitions, 21514 flow. Second operand has 17 states, 17 states have (on average 7.705882352941177) internal successors, (131), 17 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:09,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:09,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:42:09,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:14,207 INFO L124 PetriNetUnfolderBase]: 10050/14126 cut-off events. [2024-11-20 17:42:14,208 INFO L125 PetriNetUnfolderBase]: For 781193/781193 co-relation queries the response was YES. [2024-11-20 17:42:14,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151248 conditions, 14126 events. 10050/14126 cut-off events. For 781193/781193 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 74695 event pairs, 1308 based on Foata normal form. 466/14588 useless extension candidates. Maximal degree in co-relation 150613. Up to 6234 conditions per place. [2024-11-20 17:42:14,472 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 715 selfloop transitions, 1278 changer transitions 4/1998 dead transitions. [2024-11-20 17:42:14,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1998 transitions, 46799 flow [2024-11-20 17:42:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-20 17:42:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-11-20 17:42:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 852 transitions. [2024-11-20 17:42:14,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-11-20 17:42:14,474 INFO L175 Difference]: Start difference. First operand has 291 places, 1091 transitions, 21514 flow. Second operand 72 states and 852 transitions. [2024-11-20 17:42:14,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1998 transitions, 46799 flow [2024-11-20 17:42:23,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 1998 transitions, 36056 flow, removed 5002 selfloop flow, removed 4 redundant places. [2024-11-20 17:42:23,917 INFO L231 Difference]: Finished difference. Result has 386 places, 1704 transitions, 33057 flow [2024-11-20 17:42:23,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=16995, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=701, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=33057, PETRI_PLACES=386, PETRI_TRANSITIONS=1704} [2024-11-20 17:42:23,918 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-11-20 17:42:23,918 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 1704 transitions, 33057 flow [2024-11-20 17:42:23,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.705882352941177) internal successors, (131), 17 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:23,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:23,919 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:23,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 17:42:24,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:24,119 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:42:24,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:24,120 INFO L85 PathProgramCache]: Analyzing trace with hash 818812044, now seen corresponding path program 13 times [2024-11-20 17:42:24,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:24,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473144848] [2024-11-20 17:42:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:24,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:24,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:42:24,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:24,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473144848] [2024-11-20 17:42:24,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473144848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:24,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888849012] [2024-11-20 17:42:24,218 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:42:24,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:24,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:24,220 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:42:24,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 17:42:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:24,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:42:24,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:42:24,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:42:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888849012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:24,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:24,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 17:42:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935070041] [2024-11-20 17:42:24,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:24,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:42:24,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:42:24,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:42:24,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:42:24,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1704 transitions, 33057 flow. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:24,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:24,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:42:24,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:29,953 INFO L124 PetriNetUnfolderBase]: 10089/14310 cut-off events. [2024-11-20 17:42:29,953 INFO L125 PetriNetUnfolderBase]: For 432552/432552 co-relation queries the response was YES. [2024-11-20 17:42:30,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138292 conditions, 14310 events. 10089/14310 cut-off events. For 432552/432552 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 77699 event pairs, 1716 based on Foata normal form. 237/14533 useless extension candidates. Maximal degree in co-relation 137621. Up to 8441 conditions per place. [2024-11-20 17:42:30,205 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 1330 selfloop transitions, 417 changer transitions 94/1842 dead transitions. [2024-11-20 17:42:30,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1842 transitions, 39144 flow [2024-11-20 17:42:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 17:42:30,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 17:42:30,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-11-20 17:42:30,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-20 17:42:30,206 INFO L175 Difference]: Start difference. First operand has 386 places, 1704 transitions, 33057 flow. Second operand 8 states and 126 transitions. [2024-11-20 17:42:30,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1842 transitions, 39144 flow [2024-11-20 17:42:34,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 1842 transitions, 32459 flow, removed 3043 selfloop flow, removed 8 redundant places. [2024-11-20 17:42:34,878 INFO L231 Difference]: Finished difference. Result has 388 places, 1677 transitions, 27308 flow [2024-11-20 17:42:34,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=26515, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27308, PETRI_PLACES=388, PETRI_TRANSITIONS=1677} [2024-11-20 17:42:34,880 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-11-20 17:42:34,880 INFO L471 AbstractCegarLoop]: Abstraction has has 388 places, 1677 transitions, 27308 flow [2024-11-20 17:42:34,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:34,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:34,880 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:34,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-20 17:42:35,084 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,SelfDestructingSolverStorable23 [2024-11-20 17:42:35,084 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:42:35,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:35,085 INFO L85 PathProgramCache]: Analyzing trace with hash -161483671, now seen corresponding path program 14 times [2024-11-20 17:42:35,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:35,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182977428] [2024-11-20 17:42:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:35,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:35,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:35,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182977428] [2024-11-20 17:42:35,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182977428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:35,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443597173] [2024-11-20 17:42:35,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:42:35,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:35,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:35,155 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:42:35,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 17:42:35,201 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:42:35,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:35,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:42:35,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:42:35,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:42:35,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443597173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:35,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:35,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-11-20 17:42:35,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269209297] [2024-11-20 17:42:35,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:35,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:42:35,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:35,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:42:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:42:35,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:42:35,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 1677 transitions, 27308 flow. Second operand has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:35,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:35,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:42:35,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:41,070 INFO L124 PetriNetUnfolderBase]: 11655/16410 cut-off events. [2024-11-20 17:42:41,070 INFO L125 PetriNetUnfolderBase]: For 428951/428951 co-relation queries the response was YES. [2024-11-20 17:42:41,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151649 conditions, 16410 events. 11655/16410 cut-off events. For 428951/428951 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 90425 event pairs, 608 based on Foata normal form. 474/16870 useless extension candidates. Maximal degree in co-relation 151048. Up to 5065 conditions per place. [2024-11-20 17:42:41,697 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1827 selfloop transitions, 1067 changer transitions 26/2921 dead transitions. [2024-11-20 17:42:41,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 2921 transitions, 57285 flow [2024-11-20 17:42:41,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-20 17:42:41,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-20 17:42:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 625 transitions. [2024-11-20 17:42:41,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47241118669690096 [2024-11-20 17:42:41,700 INFO L175 Difference]: Start difference. First operand has 388 places, 1677 transitions, 27308 flow. Second operand 49 states and 625 transitions. [2024-11-20 17:42:41,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 2921 transitions, 57285 flow [2024-11-20 17:42:46,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 2921 transitions, 56282 flow, removed 257 selfloop flow, removed 2 redundant places. [2024-11-20 17:42:46,510 INFO L231 Difference]: Finished difference. Result has 477 places, 2191 transitions, 43122 flow [2024-11-20 17:42:46,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=26663, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=613, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1012, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=43122, PETRI_PLACES=477, PETRI_TRANSITIONS=2191} [2024-11-20 17:42:46,512 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2024-11-20 17:42:46,512 INFO L471 AbstractCegarLoop]: Abstraction has has 477 places, 2191 transitions, 43122 flow [2024-11-20 17:42:46,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:46,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:46,513 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:46,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-20 17:42:46,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:46,713 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:42:46,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:46,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1203303337, now seen corresponding path program 15 times [2024-11-20 17:42:46,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:46,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125939005] [2024-11-20 17:42:46,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:46,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:46,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:46,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125939005] [2024-11-20 17:42:46,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125939005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:46,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387709582] [2024-11-20 17:42:46,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:42:46,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:46,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:46,793 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:42:46,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-20 17:42:46,842 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-20 17:42:46,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:42:46,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:42:46,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:42:46,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:42:46,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387709582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:46,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:46,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-20 17:42:46,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847382804] [2024-11-20 17:42:46,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:46,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 17:42:46,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:46,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 17:42:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-20 17:42:46,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-20 17:42:46,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 2191 transitions, 43122 flow. Second operand has 14 states, 14 states have (on average 7.714285714285714) internal successors, (108), 14 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:46,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:46,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-20 17:42:46,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand