./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-lit/sssc12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-lit/sssc12.i -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 94001a9ab0492f7774a7e81f183179cf0060947b701e48f51b2989eec22ae051 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:23:15,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:23:15,269 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:23:15,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:23:15,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:23:15,322 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:23:15,323 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:23:15,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:23:15,324 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:23:15,324 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:23:15,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:23:15,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:23:15,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:23:15,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:23:15,329 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:23:15,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:23:15,329 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:23:15,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:23:15,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:23:15,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:23:15,333 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:23:15,334 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:23:15,334 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:23:15,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:23:15,335 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:23:15,337 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:23:15,337 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:23:15,338 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:23:15,338 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:23:15,338 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:23:15,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:23:15,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:23:15,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:23:15,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:23:15,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:23:15,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:23:15,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:23:15,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:23:15,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:23:15,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:23:15,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:23:15,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:23:15,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94001a9ab0492f7774a7e81f183179cf0060947b701e48f51b2989eec22ae051 [2024-11-17 03:23:15,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:23:15,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:23:15,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:23:15,575 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:23:15,579 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:23:15,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/sssc12.i [2024-11-17 03:23:16,956 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:23:17,183 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:23:17,184 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/sssc12.i [2024-11-17 03:23:17,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f61f8a2a/dc89c418613b422e84009b23d52b7f15/FLAGa17b5ed5e [2024-11-17 03:23:17,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f61f8a2a/dc89c418613b422e84009b23d52b7f15 [2024-11-17 03:23:17,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:23:17,218 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:23:17,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:23:17,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:23:17,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:23:17,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7726e8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17, skipping insertion in model container [2024-11-17 03:23:17,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,261 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:23:17,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:23:17,734 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:23:17,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:23:17,818 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:23:17,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17 WrapperNode [2024-11-17 03:23:17,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:23:17,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:23:17,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:23:17,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:23:17,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,844 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,868 INFO L138 Inliner]: procedures = 272, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-11-17 03:23:17,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:23:17,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:23:17,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:23:17,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:23:17,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,904 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-11-17 03:23:17,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,916 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,916 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:23:17,927 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:23:17,927 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:23:17,927 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:23:17,928 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (1/1) ... [2024-11-17 03:23:17,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:23:17,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:23:17,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:23:17,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:23:18,001 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2024-11-17 03:23:18,002 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2024-11-17 03:23:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:23:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:23:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:23:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 03:23:18,002 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:23:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 03:23:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:23:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:23:18,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:23:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:23:18,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:23:18,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:23:18,005 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:23:18,160 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:23:18,162 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:23:18,278 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:23:18,278 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:23:18,391 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:23:18,391 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:23:18,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:23:18 BoogieIcfgContainer [2024-11-17 03:23:18,392 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:23:18,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:23:18,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:23:18,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:23:18,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:23:17" (1/3) ... [2024-11-17 03:23:18,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d4b235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:23:18, skipping insertion in model container [2024-11-17 03:23:18,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:23:17" (2/3) ... [2024-11-17 03:23:18,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d4b235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:23:18, skipping insertion in model container [2024-11-17 03:23:18,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:23:18" (3/3) ... [2024-11-17 03:23:18,398 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12.i [2024-11-17 03:23:18,410 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:23:18,411 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-17 03:23:18,411 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:23:18,437 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:23:18,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 32 transitions, 68 flow [2024-11-17 03:23:18,478 INFO L124 PetriNetUnfolderBase]: 6/39 cut-off events. [2024-11-17 03:23:18,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:23:18,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 39 events. 6/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2024-11-17 03:23:18,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 32 transitions, 68 flow [2024-11-17 03:23:18,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 32 transitions, 68 flow [2024-11-17 03:23:18,490 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:23:18,495 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;@6852f2e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:23:18,495 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-17 03:23:18,498 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:23:18,498 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:23:18,499 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:23:18,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:18,499 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:23:18,500 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 03:23:18,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:18,503 INFO L85 PathProgramCache]: Analyzing trace with hash 6460712, now seen corresponding path program 1 times [2024-11-17 03:23:18,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:18,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537385737] [2024-11-17 03:23:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:18,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:18,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:23:18,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537385737] [2024-11-17 03:23:18,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537385737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:18,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:18,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:23:18,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994112413] [2024-11-17 03:23:18,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:18,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:23:18,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:23:18,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:23:18,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:23:18,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-17 03:23:18,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 32 transitions, 68 flow. Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:18,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:18,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-17 03:23:18,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:18,742 INFO L124 PetriNetUnfolderBase]: 19/77 cut-off events. [2024-11-17 03:23:18,742 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:23:18,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 77 events. 19/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 224 event pairs, 16 based on Foata normal form. 19/93 useless extension candidates. Maximal degree in co-relation 116. Up to 49 conditions per place. [2024-11-17 03:23:18,744 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 13 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2024-11-17 03:23:18,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 76 flow [2024-11-17 03:23:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:23:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:23:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 40 transitions. [2024-11-17 03:23:18,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-17 03:23:18,785 INFO L175 Difference]: Start difference. First operand has 30 places, 32 transitions, 68 flow. Second operand 2 states and 40 transitions. [2024-11-17 03:23:18,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 76 flow [2024-11-17 03:23:18,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:23:18,789 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 50 flow [2024-11-17 03:23:18,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2024-11-17 03:23:18,793 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -4 predicate places. [2024-11-17 03:23:18,793 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 50 flow [2024-11-17 03:23:18,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:18,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:18,794 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 03:23:18,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:23:18,794 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-17 03:23:18,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:18,795 INFO L85 PathProgramCache]: Analyzing trace with hash -334834140, now seen corresponding path program 1 times [2024-11-17 03:23:18,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:18,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773791236] [2024-11-17 03:23:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:18,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:23:18,815 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:23:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:23:18,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:23:18,857 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:23:18,859 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-17 03:23:18,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-17 03:23:18,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2024-11-17 03:23:18,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2024-11-17 03:23:18,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-17 03:23:18,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-17 03:23:18,862 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2024-11-17 03:23:18,862 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-17 03:23:18,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:23:18,863 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 03:23:18,866 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:23:18,867 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:23:18,891 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:23:18,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 54 transitions, 118 flow [2024-11-17 03:23:18,905 INFO L124 PetriNetUnfolderBase]: 11/69 cut-off events. [2024-11-17 03:23:18,908 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:23:18,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 69 events. 11/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 162 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2024-11-17 03:23:18,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 54 transitions, 118 flow [2024-11-17 03:23:18,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 54 transitions, 118 flow [2024-11-17 03:23:18,912 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:23:18,913 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;@6852f2e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:23:18,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-17 03:23:18,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:23:18,917 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:23:18,918 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:23:18,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:18,918 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:23:18,918 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-17 03:23:18,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:18,920 INFO L85 PathProgramCache]: Analyzing trace with hash 8123048, now seen corresponding path program 1 times [2024-11-17 03:23:18,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:18,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18662366] [2024-11-17 03:23:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:18,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:18,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:23:18,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18662366] [2024-11-17 03:23:18,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18662366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:18,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:18,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:23:18,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117575323] [2024-11-17 03:23:18,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:18,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:23:18,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:23:18,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:23:18,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:23:18,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-11-17 03:23:18,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:18,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:18,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-11-17 03:23:18,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:19,190 INFO L124 PetriNetUnfolderBase]: 513/1173 cut-off events. [2024-11-17 03:23:19,191 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-17 03:23:19,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2021 conditions, 1173 events. 513/1173 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7175 event pairs, 417 based on Foata normal form. 314/1415 useless extension candidates. Maximal degree in co-relation 1337. Up to 816 conditions per place. [2024-11-17 03:23:19,204 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 23 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2024-11-17 03:23:19,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 138 flow [2024-11-17 03:23:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:23:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:23:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 69 transitions. [2024-11-17 03:23:19,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-17 03:23:19,206 INFO L175 Difference]: Start difference. First operand has 50 places, 54 transitions, 118 flow. Second operand 2 states and 69 transitions. [2024-11-17 03:23:19,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 138 flow [2024-11-17 03:23:19,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 138 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:23:19,209 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 92 flow [2024-11-17 03:23:19,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=92, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-11-17 03:23:19,211 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2024-11-17 03:23:19,211 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 92 flow [2024-11-17 03:23:19,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:19,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:19,211 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-17 03:23:19,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:23:19,214 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-17 03:23:19,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:19,214 INFO L85 PathProgramCache]: Analyzing trace with hash 315224729, now seen corresponding path program 1 times [2024-11-17 03:23:19,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:19,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845869609] [2024-11-17 03:23:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:19,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:23:19,249 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:23:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:23:19,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:23:19,277 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:23:19,278 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-17 03:23:19,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 11 remaining) [2024-11-17 03:23:19,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2024-11-17 03:23:19,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2024-11-17 03:23:19,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 11 remaining) [2024-11-17 03:23:19,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2024-11-17 03:23:19,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2024-11-17 03:23:19,278 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2024-11-17 03:23:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2024-11-17 03:23:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2024-11-17 03:23:19,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2024-11-17 03:23:19,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:23:19,279 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 03:23:19,279 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:23:19,280 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 03:23:19,311 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:23:19,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 76 transitions, 170 flow [2024-11-17 03:23:19,324 INFO L124 PetriNetUnfolderBase]: 16/99 cut-off events. [2024-11-17 03:23:19,324 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 03:23:19,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 99 events. 16/99 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 278 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 76. Up to 8 conditions per place. [2024-11-17 03:23:19,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 76 transitions, 170 flow [2024-11-17 03:23:19,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 76 transitions, 170 flow [2024-11-17 03:23:19,329 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:23:19,330 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;@6852f2e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:23:19,330 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-17 03:23:19,331 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:23:19,331 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:23:19,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:23:19,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:19,332 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:23:19,332 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-17 03:23:19,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash 10462632, now seen corresponding path program 1 times [2024-11-17 03:23:19,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:19,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899551302] [2024-11-17 03:23:19,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:19,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:19,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:23:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899551302] [2024-11-17 03:23:19,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899551302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:19,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:19,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:23:19,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466811738] [2024-11-17 03:23:19,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:19,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:23:19,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:23:19,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:23:19,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:23:19,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 76 [2024-11-17 03:23:19,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 170 flow. Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:19,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:19,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 76 [2024-11-17 03:23:19,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:20,600 INFO L124 PetriNetUnfolderBase]: 8479/15344 cut-off events. [2024-11-17 03:23:20,601 INFO L125 PetriNetUnfolderBase]: For 653/653 co-relation queries the response was YES. [2024-11-17 03:23:20,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27259 conditions, 15344 events. 8479/15344 cut-off events. For 653/653 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 125207 event pairs, 6895 based on Foata normal form. 4352/18886 useless extension candidates. Maximal degree in co-relation 3939. Up to 11518 conditions per place. [2024-11-17 03:23:20,685 INFO L140 encePairwiseOnDemand]: 65/76 looper letters, 33 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2024-11-17 03:23:20,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 202 flow [2024-11-17 03:23:20,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:23:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:23:20,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 98 transitions. [2024-11-17 03:23:20,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6447368421052632 [2024-11-17 03:23:20,686 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 170 flow. Second operand 2 states and 98 transitions. [2024-11-17 03:23:20,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 202 flow [2024-11-17 03:23:20,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 200 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-17 03:23:20,693 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 134 flow [2024-11-17 03:23:20,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=134, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-11-17 03:23:20,696 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2024-11-17 03:23:20,696 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 134 flow [2024-11-17 03:23:20,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:20,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:20,697 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:23:20,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:23:20,697 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-17 03:23:20,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:20,698 INFO L85 PathProgramCache]: Analyzing trace with hash 205639458, now seen corresponding path program 1 times [2024-11-17 03:23:20,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:20,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143066262] [2024-11-17 03:23:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:20,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:20,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:23:20,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143066262] [2024-11-17 03:23:20,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143066262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:20,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:20,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:23:20,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25718982] [2024-11-17 03:23:20,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:20,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:23:20,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:23:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:23:20,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:23:20,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 76 [2024-11-17 03:23:20,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:20,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:20,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 76 [2024-11-17 03:23:20,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:21,936 INFO L124 PetriNetUnfolderBase]: 8479/15050 cut-off events. [2024-11-17 03:23:21,936 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2024-11-17 03:23:21,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26875 conditions, 15050 events. 8479/15050 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 119822 event pairs, 6895 based on Foata normal form. 0/14534 useless extension candidates. Maximal degree in co-relation 26869. Up to 11517 conditions per place. [2024-11-17 03:23:22,034 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 32 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2024-11-17 03:23:22,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 194 flow [2024-11-17 03:23:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:23:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:23:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-11-17 03:23:22,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-11-17 03:23:22,037 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 134 flow. Second operand 3 states and 108 transitions. [2024-11-17 03:23:22,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 194 flow [2024-11-17 03:23:22,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:23:22,040 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 130 flow [2024-11-17 03:23:22,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-17 03:23:22,042 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2024-11-17 03:23:22,043 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 130 flow [2024-11-17 03:23:22,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:22,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:22,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:23:22,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:23:22,044 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-17 03:23:22,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:22,044 INFO L85 PathProgramCache]: Analyzing trace with hash 205639459, now seen corresponding path program 1 times [2024-11-17 03:23:22,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:22,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017693460] [2024-11-17 03:23:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:22,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:22,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:23:22,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017693460] [2024-11-17 03:23:22,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017693460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:22,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:22,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:23:22,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773566380] [2024-11-17 03:23:22,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:22,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:23:22,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:23:22,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:23:22,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:23:22,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2024-11-17 03:23:22,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:22,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:22,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2024-11-17 03:23:22,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:24,151 INFO L124 PetriNetUnfolderBase]: 15545/28003 cut-off events. [2024-11-17 03:23:24,151 INFO L125 PetriNetUnfolderBase]: For 545/545 co-relation queries the response was YES. [2024-11-17 03:23:24,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49749 conditions, 28003 events. 15545/28003 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 1268. Compared 249824 event pairs, 4195 based on Foata normal form. 0/26902 useless extension candidates. Maximal degree in co-relation 49742. Up to 12499 conditions per place. [2024-11-17 03:23:24,296 INFO L140 encePairwiseOnDemand]: 68/76 looper letters, 99 selfloop transitions, 10 changer transitions 0/131 dead transitions. [2024-11-17 03:23:24,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 131 transitions, 538 flow [2024-11-17 03:23:24,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:23:24,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:23:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2024-11-17 03:23:24,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-17 03:23:24,299 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 130 flow. Second operand 6 states and 266 transitions. [2024-11-17 03:23:24,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 131 transitions, 538 flow [2024-11-17 03:23:24,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 131 transitions, 537 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:23:24,303 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 200 flow [2024-11-17 03:23:24,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-11-17 03:23:24,303 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 1 predicate places. [2024-11-17 03:23:24,303 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 200 flow [2024-11-17 03:23:24,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:24,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:24,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:23:24,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:23:24,304 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-17 03:23:24,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:24,305 INFO L85 PathProgramCache]: Analyzing trace with hash 205640486, now seen corresponding path program 1 times [2024-11-17 03:23:24,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:24,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454546779] [2024-11-17 03:23:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:24,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:24,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:23:24,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454546779] [2024-11-17 03:23:24,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454546779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:24,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:24,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:23:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161546835] [2024-11-17 03:23:24,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:24,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:23:24,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:23:24,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:23:24,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:23:24,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2024-11-17 03:23:24,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:24,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:24,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2024-11-17 03:23:24,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:26,222 INFO L124 PetriNetUnfolderBase]: 15477/27206 cut-off events. [2024-11-17 03:23:26,222 INFO L125 PetriNetUnfolderBase]: For 5904/5964 co-relation queries the response was YES. [2024-11-17 03:23:26,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54370 conditions, 27206 events. 15477/27206 cut-off events. For 5904/5964 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 234702 event pairs, 4189 based on Foata normal form. 0/26144 useless extension candidates. Maximal degree in co-relation 54359. Up to 11313 conditions per place. [2024-11-17 03:23:26,411 INFO L140 encePairwiseOnDemand]: 66/76 looper letters, 118 selfloop transitions, 13 changer transitions 0/153 dead transitions. [2024-11-17 03:23:26,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 153 transitions, 712 flow [2024-11-17 03:23:26,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:23:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:23:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 314 transitions. [2024-11-17 03:23:26,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902255639097744 [2024-11-17 03:23:26,417 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 200 flow. Second operand 7 states and 314 transitions. [2024-11-17 03:23:26,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 153 transitions, 712 flow [2024-11-17 03:23:26,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 153 transitions, 712 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:23:26,452 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 243 flow [2024-11-17 03:23:26,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-11-17 03:23:26,452 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 9 predicate places. [2024-11-17 03:23:26,452 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 243 flow [2024-11-17 03:23:26,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:26,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:26,453 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-17 03:23:26,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:23:26,453 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-17 03:23:26,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:26,454 INFO L85 PathProgramCache]: Analyzing trace with hash 908901817, now seen corresponding path program 1 times [2024-11-17 03:23:26,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:26,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229453912] [2024-11-17 03:23:26,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:26,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:23:26,463 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:23:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:23:26,473 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:23:26,474 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:23:26,475 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-17 03:23:26,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (12 of 14 remaining) [2024-11-17 03:23:26,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-17 03:23:26,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-11-17 03:23:26,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2024-11-17 03:23:26,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2024-11-17 03:23:26,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-11-17 03:23:26,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 14 remaining) [2024-11-17 03:23:26,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-17 03:23:26,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-17 03:23:26,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 14 remaining) [2024-11-17 03:23:26,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-17 03:23:26,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-17 03:23:26,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 14 remaining) [2024-11-17 03:23:26,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:23:26,478 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-17 03:23:26,480 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:23:26,480 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-17 03:23:26,512 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:23:26,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 98 transitions, 224 flow [2024-11-17 03:23:26,520 INFO L124 PetriNetUnfolderBase]: 21/129 cut-off events. [2024-11-17 03:23:26,520 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-17 03:23:26,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 129 events. 21/129 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 391 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 111. Up to 10 conditions per place. [2024-11-17 03:23:26,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 98 transitions, 224 flow [2024-11-17 03:23:26,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 98 transitions, 224 flow [2024-11-17 03:23:26,522 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:23:26,523 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;@6852f2e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:23:26,523 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-17 03:23:26,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:23:26,524 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:23:26,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:23:26,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:26,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:23:26,524 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 03:23:26,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:26,524 INFO L85 PathProgramCache]: Analyzing trace with hash 13479464, now seen corresponding path program 1 times [2024-11-17 03:23:26,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:26,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115600760] [2024-11-17 03:23:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:26,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:26,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:23:26,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115600760] [2024-11-17 03:23:26,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115600760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:26,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:26,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:23:26,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847216826] [2024-11-17 03:23:26,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:26,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:23:26,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:23:26,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:23:26,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:23:26,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 98 [2024-11-17 03:23:26,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 98 transitions, 224 flow. Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:26,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:26,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 98 [2024-11-17 03:23:26,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:41,696 INFO L124 PetriNetUnfolderBase]: 118237/187150 cut-off events. [2024-11-17 03:23:41,696 INFO L125 PetriNetUnfolderBase]: For 11469/11469 co-relation queries the response was YES. [2024-11-17 03:23:42,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340744 conditions, 187150 events. 118237/187150 cut-off events. For 11469/11469 co-relation queries the response was YES. Maximal size of possible extension queue 6183. Compared 1762308 event pairs, 96301 based on Foata normal form. 55676/234604 useless extension candidates. Maximal degree in co-relation 27354. Up to 148636 conditions per place. [2024-11-17 03:23:43,722 INFO L140 encePairwiseOnDemand]: 84/98 looper letters, 43 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2024-11-17 03:23:43,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 268 flow [2024-11-17 03:23:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:23:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:23:43,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 127 transitions. [2024-11-17 03:23:43,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6479591836734694 [2024-11-17 03:23:43,724 INFO L175 Difference]: Start difference. First operand has 90 places, 98 transitions, 224 flow. Second operand 2 states and 127 transitions. [2024-11-17 03:23:43,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 268 flow [2024-11-17 03:23:43,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 77 transitions, 262 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-17 03:23:43,734 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 176 flow [2024-11-17 03:23:43,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=176, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-11-17 03:23:43,735 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -7 predicate places. [2024-11-17 03:23:43,735 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 176 flow [2024-11-17 03:23:43,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:43,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:43,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:23:43,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:23:43,737 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 03:23:43,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:43,738 INFO L85 PathProgramCache]: Analyzing trace with hash -250249545, now seen corresponding path program 1 times [2024-11-17 03:23:43,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:43,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463636840] [2024-11-17 03:23:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:43,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:43,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:23:43,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463636840] [2024-11-17 03:23:43,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463636840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:43,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:43,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:23:43,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151115787] [2024-11-17 03:23:43,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:43,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:23:43,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:23:43,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:23:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:23:43,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 98 [2024-11-17 03:23:43,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:43,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:43,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 98 [2024-11-17 03:23:43,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:23:55,636 INFO L124 PetriNetUnfolderBase]: 118237/184216 cut-off events. [2024-11-17 03:23:55,636 INFO L125 PetriNetUnfolderBase]: For 4880/4880 co-relation queries the response was YES. [2024-11-17 03:23:56,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335896 conditions, 184216 events. 118237/184216 cut-off events. For 4880/4880 co-relation queries the response was YES. Maximal size of possible extension queue 6011. Compared 1690591 event pairs, 96301 based on Foata normal form. 0/178928 useless extension candidates. Maximal degree in co-relation 335889. Up to 148635 conditions per place. [2024-11-17 03:23:56,771 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 42 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2024-11-17 03:23:56,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 73 transitions, 254 flow [2024-11-17 03:23:56,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:23:56,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:23:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-17 03:23:56,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-17 03:23:56,772 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 176 flow. Second operand 3 states and 140 transitions. [2024-11-17 03:23:56,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 73 transitions, 254 flow [2024-11-17 03:23:56,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 73 transitions, 254 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:23:56,792 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 170 flow [2024-11-17 03:23:56,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2024-11-17 03:23:56,794 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -9 predicate places. [2024-11-17 03:23:56,794 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 170 flow [2024-11-17 03:23:56,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:56,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:23:56,795 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:23:56,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:23:56,795 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 03:23:56,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:23:56,795 INFO L85 PathProgramCache]: Analyzing trace with hash -250249544, now seen corresponding path program 1 times [2024-11-17 03:23:56,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:23:56,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905403751] [2024-11-17 03:23:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:23:56,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:23:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:23:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:23:57,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:23:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905403751] [2024-11-17 03:23:57,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905403751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:23:57,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:23:57,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:23:57,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407181698] [2024-11-17 03:23:57,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:23:57,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:23:57,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:23:57,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:23:57,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:23:57,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 98 [2024-11-17 03:23:57,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:23:57,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:23:57,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 98 [2024-11-17 03:23:57,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand