./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/bench-exp3x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 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/bench-exp3x3.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 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:14:14,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:14:14,759 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:14:14,764 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:14:14,764 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:14:14,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:14:14,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:14:14,788 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:14:14,789 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:14:14,789 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:14:14,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:14:14,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:14:14,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:14:14,791 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:14:14,791 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:14:14,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:14:14,792 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:14:14,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:14:14,792 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:14:14,793 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:14:14,793 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:14:14,794 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:14:14,794 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:14:14,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:14:14,795 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:14:14,795 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:14:14,795 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:14:14,796 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:14:14,796 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:14:14,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:14:14,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:14:14,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:14:14,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:14:14,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:14:14,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:14:14,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:14:14,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:14:14,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:14:14,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:14:14,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:14:14,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:14:14,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:14:14,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 [2024-10-24 19:14:15,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:14:15,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:14:15,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:14:15,064 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:14:15,065 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:14:15,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-10-24 19:14:16,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:14:16,646 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:14:16,647 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-10-24 19:14:16,657 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da8a2bedc/7676a54f775049d895d48114519e8081/FLAGfc7b0abef [2024-10-24 19:14:16,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da8a2bedc/7676a54f775049d895d48114519e8081 [2024-10-24 19:14:16,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:14:16,678 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:14:16,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:14:16,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:14:16,685 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:14:16,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:16,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cfb4d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16, skipping insertion in model container [2024-10-24 19:14:16,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:16,712 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:14:16,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:14:16,925 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:14:16,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:14:16,961 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:14:16,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16 WrapperNode [2024-10-24 19:14:16,962 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:14:16,963 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:14:16,963 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:14:16,963 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:14:16,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:16,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:17,002 INFO L138 Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2024-10-24 19:14:17,005 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:14:17,006 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:14:17,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:14:17,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:14:17,016 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:17,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:17,019 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:17,032 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 19:14:17,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:17,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:17,040 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:17,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:17,045 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:17,047 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:17,050 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:14:17,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:14:17,056 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:14:17,056 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:14:17,057 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (1/1) ... [2024-10-24 19:14:17,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:14:17,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:14:17,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:14:17,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:14:17,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:14:17,151 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:14:17,151 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:14:17,151 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:14:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:14:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 19:14:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 19:14:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-24 19:14:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-24 19:14:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 19:14:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-10-24 19:14:17,154 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-10-24 19:14:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-10-24 19:14:17,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-10-24 19:14:17,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:14:17,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:14:17,156 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:14:17,287 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:14:17,290 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:14:17,620 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:14:17,620 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:14:17,788 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:14:17,789 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 19:14:17,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:14:17 BoogieIcfgContainer [2024-10-24 19:14:17,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:14:17,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:14:17,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:14:17,796 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:14:17,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:14:16" (1/3) ... [2024-10-24 19:14:17,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab8197b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:14:17, skipping insertion in model container [2024-10-24 19:14:17,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:14:16" (2/3) ... [2024-10-24 19:14:17,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab8197b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:14:17, skipping insertion in model container [2024-10-24 19:14:17,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:14:17" (3/3) ... [2024-10-24 19:14:17,799 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-10-24 19:14:17,813 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:14:17,814 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 19:14:17,814 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:14:17,872 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-10-24 19:14:17,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 48 transitions, 138 flow [2024-10-24 19:14:17,955 INFO L124 PetriNetUnfolderBase]: 6/42 cut-off events. [2024-10-24 19:14:17,956 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 19:14:17,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 42 events. 6/42 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-10-24 19:14:17,960 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 48 transitions, 138 flow [2024-10-24 19:14:17,963 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 118 flow [2024-10-24 19:14:17,971 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:14:17,978 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;@147089e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:14:17,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-24 19:14:17,991 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:14:17,992 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-10-24 19:14:17,992 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 19:14:17,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:14:17,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:14:17,993 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:14:17,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:14:17,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1676365791, now seen corresponding path program 1 times [2024-10-24 19:14:18,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:14:18,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925108304] [2024-10-24 19:14:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:18,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:14:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:18,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:14:18,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925108304] [2024-10-24 19:14:18,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925108304] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:14:18,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:14:18,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:14:18,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996600993] [2024-10-24 19:14:18,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:14:18,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:14:18,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:14:18,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:14:18,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:14:18,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:14:18,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:18,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:14:18,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:14:18,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:14:20,690 INFO L124 PetriNetUnfolderBase]: 18895/21812 cut-off events. [2024-10-24 19:14:20,692 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2024-10-24 19:14:20,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44837 conditions, 21812 events. 18895/21812 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 69668 event pairs, 1570 based on Foata normal form. 2/11929 useless extension candidates. Maximal degree in co-relation 38647. Up to 20725 conditions per place. [2024-10-24 19:14:20,877 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 53 selfloop transitions, 7 changer transitions 1/68 dead transitions. [2024-10-24 19:14:20,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2024-10-24 19:14:20,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:14:20,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:14:20,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-10-24 19:14:20,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-10-24 19:14:20,892 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 118 flow. Second operand 3 states and 105 transitions. [2024-10-24 19:14:20,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2024-10-24 19:14:20,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-10-24 19:14:20,922 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 137 flow [2024-10-24 19:14:20,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2024-10-24 19:14:20,930 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2024-10-24 19:14:20,930 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 137 flow [2024-10-24 19:14:20,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:20,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:14:20,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:14:20,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 19:14:20,932 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:14:20,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:14:20,933 INFO L85 PathProgramCache]: Analyzing trace with hash -300462063, now seen corresponding path program 1 times [2024-10-24 19:14:20,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:14:20,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869697851] [2024-10-24 19:14:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:20,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:14:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:21,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:14:21,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869697851] [2024-10-24 19:14:21,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869697851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:14:21,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:14:21,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:14:21,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196818721] [2024-10-24 19:14:21,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:14:21,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:14:21,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:14:21,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:14:21,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:14:21,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:14:21,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:21,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:14:21,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:14:21,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:14:23,261 INFO L124 PetriNetUnfolderBase]: 23887/27736 cut-off events. [2024-10-24 19:14:23,262 INFO L125 PetriNetUnfolderBase]: For 6134/6134 co-relation queries the response was YES. [2024-10-24 19:14:23,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68982 conditions, 27736 events. 23887/27736 cut-off events. For 6134/6134 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 95880 event pairs, 2287 based on Foata normal form. 294/27960 useless extension candidates. Maximal degree in co-relation 18889. Up to 12315 conditions per place. [2024-10-24 19:14:23,427 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 106 selfloop transitions, 10 changer transitions 0/123 dead transitions. [2024-10-24 19:14:23,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 123 transitions, 595 flow [2024-10-24 19:14:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:14:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:14:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-10-24 19:14:23,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-10-24 19:14:23,430 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 137 flow. Second operand 5 states and 176 transitions. [2024-10-24 19:14:23,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 123 transitions, 595 flow [2024-10-24 19:14:23,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 123 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:14:23,433 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 195 flow [2024-10-24 19:14:23,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2024-10-24 19:14:23,434 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2024-10-24 19:14:23,434 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 195 flow [2024-10-24 19:14:23,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:23,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:14:23,435 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:14:23,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 19:14:23,435 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:14:23,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:14:23,436 INFO L85 PathProgramCache]: Analyzing trace with hash 583350020, now seen corresponding path program 1 times [2024-10-24 19:14:23,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:14:23,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559838722] [2024-10-24 19:14:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:23,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:14:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:23,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:14:23,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559838722] [2024-10-24 19:14:23,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559838722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:14:23,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:14:23,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:14:23,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287603537] [2024-10-24 19:14:23,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:14:23,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:14:23,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:14:23,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:14:23,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:14:23,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:14:23,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:23,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:14:23,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:14:23,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:14:25,625 INFO L124 PetriNetUnfolderBase]: 23497/27346 cut-off events. [2024-10-24 19:14:25,626 INFO L125 PetriNetUnfolderBase]: For 19643/19643 co-relation queries the response was YES. [2024-10-24 19:14:25,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77678 conditions, 27346 events. 23497/27346 cut-off events. For 19643/19643 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 95801 event pairs, 1822 based on Foata normal form. 390/27666 useless extension candidates. Maximal degree in co-relation 40099. Up to 11925 conditions per place. [2024-10-24 19:14:25,803 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 105 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2024-10-24 19:14:25,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 120 transitions, 612 flow [2024-10-24 19:14:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:14:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:14:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-10-24 19:14:25,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-10-24 19:14:25,806 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 195 flow. Second operand 5 states and 174 transitions. [2024-10-24 19:14:25,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 120 transitions, 612 flow [2024-10-24 19:14:25,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 120 transitions, 612 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:14:25,832 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 209 flow [2024-10-24 19:14:25,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-10-24 19:14:25,833 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-10-24 19:14:25,833 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 209 flow [2024-10-24 19:14:25,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:25,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:14:25,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:14:25,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 19:14:25,834 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:14:25,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:14:25,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1393250483, now seen corresponding path program 2 times [2024-10-24 19:14:25,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:14:25,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644082893] [2024-10-24 19:14:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:25,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:14:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:25,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:14:25,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644082893] [2024-10-24 19:14:25,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644082893] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:14:25,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268714273] [2024-10-24 19:14:25,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:14:25,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:14:25,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:14:25,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:14:25,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 19:14:26,037 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:14:26,037 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:14:26,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:14:26,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:14:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:26,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:14:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:26,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268714273] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:14:26,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:14:26,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-24 19:14:26,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237157750] [2024-10-24 19:14:26,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:14:26,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:14:26,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:14:26,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:14:26,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:14:26,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:14:26,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:26,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:14:26,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:14:26,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:14:27,995 INFO L124 PetriNetUnfolderBase]: 22438/26333 cut-off events. [2024-10-24 19:14:27,995 INFO L125 PetriNetUnfolderBase]: For 25522/25522 co-relation queries the response was YES. [2024-10-24 19:14:28,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77729 conditions, 26333 events. 22438/26333 cut-off events. For 25522/25522 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 96121 event pairs, 5044 based on Foata normal form. 565/26623 useless extension candidates. Maximal degree in co-relation 36142. Up to 13880 conditions per place. [2024-10-24 19:14:28,160 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 103 selfloop transitions, 8 changer transitions 0/118 dead transitions. [2024-10-24 19:14:28,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 118 transitions, 632 flow [2024-10-24 19:14:28,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:14:28,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:14:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-10-24 19:14:28,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-10-24 19:14:28,164 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 209 flow. Second operand 5 states and 175 transitions. [2024-10-24 19:14:28,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 118 transitions, 632 flow [2024-10-24 19:14:28,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 118 transitions, 625 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:14:28,196 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 252 flow [2024-10-24 19:14:28,196 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-10-24 19:14:28,197 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2024-10-24 19:14:28,197 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 252 flow [2024-10-24 19:14:28,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:28,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:14:28,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:14:28,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 19:14:28,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:14:28,404 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:14:28,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:14:28,404 INFO L85 PathProgramCache]: Analyzing trace with hash 535697087, now seen corresponding path program 1 times [2024-10-24 19:14:28,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:14:28,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747681302] [2024-10-24 19:14:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:28,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:14:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:28,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:28,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:14:28,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747681302] [2024-10-24 19:14:28,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747681302] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:14:28,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418716612] [2024-10-24 19:14:28,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:28,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:14:28,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:14:28,508 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:14:28,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 19:14:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:28,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:14:28,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:14:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:28,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:14:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:28,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418716612] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:14:28,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:14:28,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-24 19:14:28,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232389463] [2024-10-24 19:14:28,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:14:28,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:14:28,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:14:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:14:28,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:14:28,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:14:28,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:28,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:14:28,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:14:28,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:14:31,022 INFO L124 PetriNetUnfolderBase]: 30687/36524 cut-off events. [2024-10-24 19:14:31,023 INFO L125 PetriNetUnfolderBase]: For 61851/61857 co-relation queries the response was YES. [2024-10-24 19:14:31,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117832 conditions, 36524 events. 30687/36524 cut-off events. For 61851/61857 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 147034 event pairs, 4698 based on Foata normal form. 769/36985 useless extension candidates. Maximal degree in co-relation 74570. Up to 17662 conditions per place. [2024-10-24 19:14:31,204 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 133 selfloop transitions, 8 changer transitions 0/148 dead transitions. [2024-10-24 19:14:31,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 148 transitions, 1028 flow [2024-10-24 19:14:31,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:14:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:14:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-10-24 19:14:31,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-10-24 19:14:31,206 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 252 flow. Second operand 5 states and 171 transitions. [2024-10-24 19:14:31,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 148 transitions, 1028 flow [2024-10-24 19:14:31,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 148 transitions, 1001 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-24 19:14:31,229 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 298 flow [2024-10-24 19:14:31,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-10-24 19:14:31,230 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-10-24 19:14:31,230 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 298 flow [2024-10-24 19:14:31,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:31,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:14:31,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:14:31,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 19:14:31,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:14:31,436 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:14:31,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:14:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash -354479243, now seen corresponding path program 1 times [2024-10-24 19:14:31,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:14:31,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413372965] [2024-10-24 19:14:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:31,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:14:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:31,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:14:31,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413372965] [2024-10-24 19:14:31,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413372965] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:14:31,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944399166] [2024-10-24 19:14:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:31,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:14:31,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:14:31,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:14:31,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 19:14:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:31,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:14:31,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:14:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:31,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:14:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:31,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944399166] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:14:31,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:14:31,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-24 19:14:31,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285364821] [2024-10-24 19:14:31,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:14:31,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:14:31,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:14:31,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:14:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:14:31,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:14:31,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:31,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:14:31,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:14:31,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:14:34,952 INFO L124 PetriNetUnfolderBase]: 41227/49968 cut-off events. [2024-10-24 19:14:34,953 INFO L125 PetriNetUnfolderBase]: For 119606/119684 co-relation queries the response was YES. [2024-10-24 19:14:35,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185497 conditions, 49968 events. 41227/49968 cut-off events. For 119606/119684 co-relation queries the response was YES. Maximal size of possible extension queue 1947. Compared 225072 event pairs, 7141 based on Foata normal form. 923/50083 useless extension candidates. Maximal degree in co-relation 116907. Up to 22830 conditions per place. [2024-10-24 19:14:35,492 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 143 selfloop transitions, 8 changer transitions 0/158 dead transitions. [2024-10-24 19:14:35,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 158 transitions, 1187 flow [2024-10-24 19:14:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:14:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:14:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-10-24 19:14:35,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2024-10-24 19:14:35,493 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 298 flow. Second operand 5 states and 161 transitions. [2024-10-24 19:14:35,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 158 transitions, 1187 flow [2024-10-24 19:14:35,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 158 transitions, 1187 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:14:35,534 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 353 flow [2024-10-24 19:14:35,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=353, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-10-24 19:14:35,535 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-10-24 19:14:35,535 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 353 flow [2024-10-24 19:14:35,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:35,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:14:35,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:14:35,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 19:14:35,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:14:35,737 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:14:35,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:14:35,737 INFO L85 PathProgramCache]: Analyzing trace with hash -889192730, now seen corresponding path program 1 times [2024-10-24 19:14:35,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:14:35,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875915407] [2024-10-24 19:14:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:35,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:14:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:35,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:14:35,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875915407] [2024-10-24 19:14:35,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875915407] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:14:35,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:14:35,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:14:35,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644706693] [2024-10-24 19:14:35,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:14:35,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:14:35,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:14:35,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:14:35,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:14:35,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:14:35,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:35,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:14:35,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:14:35,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:14:38,990 INFO L124 PetriNetUnfolderBase]: 40645/48942 cut-off events. [2024-10-24 19:14:38,991 INFO L125 PetriNetUnfolderBase]: For 135470/135548 co-relation queries the response was YES. [2024-10-24 19:14:39,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202750 conditions, 48942 events. 40645/48942 cut-off events. For 135470/135548 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 215706 event pairs, 2077 based on Foata normal form. 595/49449 useless extension candidates. Maximal degree in co-relation 127962. Up to 22248 conditions per place. [2024-10-24 19:14:39,585 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 157 selfloop transitions, 10 changer transitions 0/174 dead transitions. [2024-10-24 19:14:39,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 174 transitions, 1347 flow [2024-10-24 19:14:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:14:39,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:14:39,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-10-24 19:14:39,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6958333333333333 [2024-10-24 19:14:39,587 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 353 flow. Second operand 5 states and 167 transitions. [2024-10-24 19:14:39,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 174 transitions, 1347 flow [2024-10-24 19:14:39,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 174 transitions, 1347 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:14:39,954 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 416 flow [2024-10-24 19:14:39,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-10-24 19:14:39,955 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-10-24 19:14:39,955 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 416 flow [2024-10-24 19:14:39,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:39,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:14:39,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:14:39,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 19:14:39,956 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:14:39,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:14:39,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1818465662, now seen corresponding path program 1 times [2024-10-24 19:14:39,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:14:39,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825116767] [2024-10-24 19:14:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:39,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:14:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:14:40,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825116767] [2024-10-24 19:14:40,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825116767] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:14:40,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:14:40,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:14:40,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262740077] [2024-10-24 19:14:40,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:14:40,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:14:40,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:14:40,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:14:40,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:14:40,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:14:40,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 416 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:40,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:14:40,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:14:40,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:14:43,365 INFO L124 PetriNetUnfolderBase]: 40187/48708 cut-off events. [2024-10-24 19:14:43,365 INFO L125 PetriNetUnfolderBase]: For 156421/156499 co-relation queries the response was YES. [2024-10-24 19:14:43,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210811 conditions, 48708 events. 40187/48708 cut-off events. For 156421/156499 co-relation queries the response was YES. Maximal size of possible extension queue 1909. Compared 214594 event pairs, 2107 based on Foata normal form. 471/48823 useless extension candidates. Maximal degree in co-relation 133227. Up to 21790 conditions per place. [2024-10-24 19:14:43,669 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 167 selfloop transitions, 10 changer transitions 0/184 dead transitions. [2024-10-24 19:14:43,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 184 transitions, 1560 flow [2024-10-24 19:14:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:14:43,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:14:43,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-10-24 19:14:43,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-24 19:14:43,671 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 416 flow. Second operand 5 states and 159 transitions. [2024-10-24 19:14:43,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 184 transitions, 1560 flow [2024-10-24 19:14:44,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 184 transitions, 1509 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-10-24 19:14:44,123 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 464 flow [2024-10-24 19:14:44,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=464, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-10-24 19:14:44,124 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2024-10-24 19:14:44,124 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 464 flow [2024-10-24 19:14:44,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:44,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:14:44,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:14:44,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 19:14:44,125 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:14:44,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:14:44,125 INFO L85 PathProgramCache]: Analyzing trace with hash -996657556, now seen corresponding path program 2 times [2024-10-24 19:14:44,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:14:44,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239505028] [2024-10-24 19:14:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:44,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:14:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:44,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:14:44,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239505028] [2024-10-24 19:14:44,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239505028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:14:44,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:14:44,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:14:44,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560919347] [2024-10-24 19:14:44,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:14:44,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:14:44,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:14:44,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:14:44,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:14:44,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:14:44,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:44,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:14:44,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:14:44,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:14:47,744 INFO L124 PetriNetUnfolderBase]: 39283/47956 cut-off events. [2024-10-24 19:14:47,744 INFO L125 PetriNetUnfolderBase]: For 152465/152543 co-relation queries the response was YES. [2024-10-24 19:14:47,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214573 conditions, 47956 events. 39283/47956 cut-off events. For 152465/152543 co-relation queries the response was YES. Maximal size of possible extension queue 1851. Compared 220485 event pairs, 6301 based on Foata normal form. 917/48365 useless extension candidates. Maximal degree in co-relation 137166. Up to 27379 conditions per place. [2024-10-24 19:14:48,374 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 160 selfloop transitions, 10 changer transitions 0/177 dead transitions. [2024-10-24 19:14:48,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 177 transitions, 1481 flow [2024-10-24 19:14:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:14:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:14:48,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-10-24 19:14:48,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-24 19:14:48,376 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 464 flow. Second operand 5 states and 156 transitions. [2024-10-24 19:14:48,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 177 transitions, 1481 flow [2024-10-24 19:14:48,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 177 transitions, 1466 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-24 19:14:48,886 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 503 flow [2024-10-24 19:14:48,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=503, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2024-10-24 19:14:48,887 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-10-24 19:14:48,887 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 503 flow [2024-10-24 19:14:48,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:48,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:14:48,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:14:48,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 19:14:48,888 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:14:48,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:14:48,889 INFO L85 PathProgramCache]: Analyzing trace with hash 487005157, now seen corresponding path program 2 times [2024-10-24 19:14:48,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:14:48,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485988493] [2024-10-24 19:14:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:48,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:14:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:48,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:14:48,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485988493] [2024-10-24 19:14:48,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485988493] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:14:48,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:14:48,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:14:48,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013210768] [2024-10-24 19:14:48,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:14:48,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:14:48,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:14:48,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:14:48,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:14:48,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:14:48,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 503 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:48,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:14:48,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:14:48,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:14:52,198 INFO L124 PetriNetUnfolderBase]: 35117/42710 cut-off events. [2024-10-24 19:14:52,198 INFO L125 PetriNetUnfolderBase]: For 144682/144760 co-relation queries the response was YES. [2024-10-24 19:14:52,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198670 conditions, 42710 events. 35117/42710 cut-off events. For 144682/144760 co-relation queries the response was YES. Maximal size of possible extension queue 1593. Compared 186825 event pairs, 2119 based on Foata normal form. 465/42819 useless extension candidates. Maximal degree in co-relation 176386. Up to 19276 conditions per place. [2024-10-24 19:14:52,473 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 169 selfloop transitions, 9 changer transitions 0/185 dead transitions. [2024-10-24 19:14:52,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 185 transitions, 1567 flow [2024-10-24 19:14:52,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:14:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:14:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-10-24 19:14:52,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-24 19:14:52,475 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 503 flow. Second operand 5 states and 159 transitions. [2024-10-24 19:14:52,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 185 transitions, 1567 flow [2024-10-24 19:14:53,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 185 transitions, 1547 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-24 19:14:53,232 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 498 flow [2024-10-24 19:14:53,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-10-24 19:14:53,233 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2024-10-24 19:14:53,233 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 498 flow [2024-10-24 19:14:53,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:53,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:14:53,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:14:53,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 19:14:53,234 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:14:53,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:14:53,235 INFO L85 PathProgramCache]: Analyzing trace with hash -488713583, now seen corresponding path program 2 times [2024-10-24 19:14:53,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:14:53,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012199020] [2024-10-24 19:14:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:53,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:14:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:53,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:14:53,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012199020] [2024-10-24 19:14:53,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012199020] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:14:53,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:14:53,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:14:53,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886314052] [2024-10-24 19:14:53,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:14:53,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:14:53,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:14:53,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:14:53,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:14:53,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:14:53,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:53,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:14:53,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:14:53,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:14:55,863 INFO L124 PetriNetUnfolderBase]: 30549/36864 cut-off events. [2024-10-24 19:14:55,863 INFO L125 PetriNetUnfolderBase]: For 140367/140445 co-relation queries the response was YES. [2024-10-24 19:14:55,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173189 conditions, 36864 events. 30549/36864 cut-off events. For 140367/140445 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 155936 event pairs, 1948 based on Foata normal form. 505/37293 useless extension candidates. Maximal degree in co-relation 153253. Up to 16532 conditions per place. [2024-10-24 19:14:56,116 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 184 selfloop transitions, 9 changer transitions 0/200 dead transitions. [2024-10-24 19:14:56,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 200 transitions, 1750 flow [2024-10-24 19:14:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:14:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:14:56,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-10-24 19:14:56,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6958333333333333 [2024-10-24 19:14:56,118 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 498 flow. Second operand 5 states and 167 transitions. [2024-10-24 19:14:56,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 200 transitions, 1750 flow [2024-10-24 19:14:56,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 200 transitions, 1713 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-24 19:14:56,703 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 502 flow [2024-10-24 19:14:56,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=502, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-10-24 19:14:56,704 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-10-24 19:14:56,704 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 502 flow [2024-10-24 19:14:56,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:56,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:14:56,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:14:56,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 19:14:56,705 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:14:56,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:14:56,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2000641460, now seen corresponding path program 2 times [2024-10-24 19:14:56,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:14:56,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702768685] [2024-10-24 19:14:56,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:14:56,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:14:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:14:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:56,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:14:56,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702768685] [2024-10-24 19:14:56,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702768685] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:14:56,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333542824] [2024-10-24 19:14:56,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:14:56,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:14:56,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:14:56,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:14:56,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 19:14:56,880 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:14:56,881 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:14:56,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:14:56,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:14:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:57,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:14:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:14:57,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333542824] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:14:57,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:14:57,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-24 19:14:57,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450394518] [2024-10-24 19:14:57,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:14:57,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:14:57,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:14:57,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:14:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:14:57,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:14:57,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:14:57,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:14:57,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:14:57,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:14:59,659 INFO L124 PetriNetUnfolderBase]: 29565/36036 cut-off events. [2024-10-24 19:14:59,659 INFO L125 PetriNetUnfolderBase]: For 136154/136448 co-relation queries the response was YES. [2024-10-24 19:14:59,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173761 conditions, 36036 events. 29565/36036 cut-off events. For 136154/136448 co-relation queries the response was YES. Maximal size of possible extension queue 1335. Compared 160248 event pairs, 5915 based on Foata normal form. 1033/36837 useless extension candidates. Maximal degree in co-relation 157205. Up to 19907 conditions per place. [2024-10-24 19:14:59,911 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 179 selfloop transitions, 8 changer transitions 0/194 dead transitions. [2024-10-24 19:14:59,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 194 transitions, 1685 flow [2024-10-24 19:14:59,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:14:59,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:14:59,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-10-24 19:14:59,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-10-24 19:14:59,912 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 502 flow. Second operand 5 states and 164 transitions. [2024-10-24 19:14:59,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 194 transitions, 1685 flow [2024-10-24 19:15:00,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 194 transitions, 1676 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 19:15:00,120 INFO L231 Difference]: Finished difference. Result has 97 places, 78 transitions, 543 flow [2024-10-24 19:15:00,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=543, PETRI_PLACES=97, PETRI_TRANSITIONS=78} [2024-10-24 19:15:00,121 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-10-24 19:15:00,121 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 78 transitions, 543 flow [2024-10-24 19:15:00,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:15:00,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:15:00,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:15:00,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 19:15:00,322 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 [2024-10-24 19:15:00,323 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-24 19:15:00,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:15:00,323 INFO L85 PathProgramCache]: Analyzing trace with hash 956827132, now seen corresponding path program 2 times [2024-10-24 19:15:00,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:15:00,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151961911] [2024-10-24 19:15:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:15:00,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:15:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:15:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:15:00,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:15:00,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151961911] [2024-10-24 19:15:00,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151961911] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:15:00,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492979557] [2024-10-24 19:15:00,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:15:00,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:15:00,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:15:00,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:15:00,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 19:15:00,470 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:15:00,470 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:15:00,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:15:00,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:15:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:15:00,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:15:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:15:00,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492979557] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:15:00,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:15:00,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-24 19:15:00,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155205204] [2024-10-24 19:15:00,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:15:00,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:15:00,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:15:00,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:15:00,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:15:00,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-24 19:15:00,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 78 transitions, 543 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:15:00,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:15:00,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-24 19:15:00,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand