./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.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-ext/31_simple_loop5_vs.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 d5289904c0d34e84fc731c9bca51c5d8bc54117a73409b0419290d8896b60d2d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:08:16,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:08:16,490 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:08:16,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:08:16,495 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:08:16,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:08:16,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:08:16,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:08:16,524 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:08:16,525 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:08:16,526 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:08:16,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:08:16,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:08:16,527 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:08:16,527 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:08:16,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:08:16,528 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:08:16,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:08:16,529 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:08:16,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:08:16,529 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:08:16,530 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:08:16,531 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:08:16,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:08:16,531 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:08:16,532 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:08:16,532 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:08:16,532 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:08:16,533 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:08:16,533 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:08:16,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:08:16,534 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:08:16,534 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:08:16,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:08:16,535 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:08:16,535 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:08:16,535 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:08:16,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:08:16,536 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:08:16,536 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:08:16,537 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:08:16,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:08:16,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5289904c0d34e84fc731c9bca51c5d8bc54117a73409b0419290d8896b60d2d [2024-11-17 03:08:16,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:08:16,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:08:16,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:08:16,828 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:08:16,829 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:08:16,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2024-11-17 03:08:18,229 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:08:18,463 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:08:18,468 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2024-11-17 03:08:18,483 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4571bfb65/237e1d604195437f962918ec2e00c8a6/FLAGdc846a442 [2024-11-17 03:08:18,495 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4571bfb65/237e1d604195437f962918ec2e00c8a6 [2024-11-17 03:08:18,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:08:18,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:08:18,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:08:18,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:08:18,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:08:18,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:08:18" (1/1) ... [2024-11-17 03:08:18,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9e1306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:18, skipping insertion in model container [2024-11-17 03:08:18,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:08:18" (1/1) ... [2024-11-17 03:08:18,557 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:08:18,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:08:18,948 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:08:18,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:08:19,044 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:08:19,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19 WrapperNode [2024-11-17 03:08:19,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:08:19,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:08:19,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:08:19,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:08:19,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (1/1) ... [2024-11-17 03:08:19,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (1/1) ... [2024-11-17 03:08:19,091 INFO L138 Inliner]: procedures = 162, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2024-11-17 03:08:19,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:08:19,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:08:19,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:08:19,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:08:19,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (1/1) ... [2024-11-17 03:08:19,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (1/1) ... [2024-11-17 03:08:19,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (1/1) ... [2024-11-17 03:08:19,142 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-17 03:08:19,143 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (1/1) ... [2024-11-17 03:08:19,143 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (1/1) ... [2024-11-17 03:08:19,151 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (1/1) ... [2024-11-17 03:08:19,151 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (1/1) ... [2024-11-17 03:08:19,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (1/1) ... [2024-11-17 03:08:19,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (1/1) ... [2024-11-17 03:08:19,158 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:08:19,161 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:08:19,161 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:08:19,161 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:08:19,162 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (1/1) ... [2024-11-17 03:08:19,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:08:19,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:08:19,229 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 03:08:19,231 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 03:08:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-17 03:08:19,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-17 03:08:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-17 03:08:19,291 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-17 03:08:19,291 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:08:19,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:08:19,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:08:19,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:08:19,292 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:08:19,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:08:19,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:08:19,294 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 03:08:19,425 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:08:19,427 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:08:19,558 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:08:19,559 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:08:19,652 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:08:19,653 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:08:19,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:08:19 BoogieIcfgContainer [2024-11-17 03:08:19,654 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:08:19,656 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:08:19,656 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:08:19,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:08:19,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:08:18" (1/3) ... [2024-11-17 03:08:19,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704ea1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:08:19, skipping insertion in model container [2024-11-17 03:08:19,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:08:19" (2/3) ... [2024-11-17 03:08:19,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704ea1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:08:19, skipping insertion in model container [2024-11-17 03:08:19,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:08:19" (3/3) ... [2024-11-17 03:08:19,662 INFO L112 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs.i [2024-11-17 03:08:19,678 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:08:19,678 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-17 03:08:19,679 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:08:19,723 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:19,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 38 transitions, 84 flow [2024-11-17 03:08:19,787 INFO L124 PetriNetUnfolderBase]: 7/44 cut-off events. [2024-11-17 03:08:19,787 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:19,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 44 events. 7/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 116 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2024-11-17 03:08:19,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 38 transitions, 84 flow [2024-11-17 03:08:19,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 37 transitions, 81 flow [2024-11-17 03:08:19,807 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:19,812 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;@18d0216d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:19,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-17 03:08:19,819 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:19,820 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 03:08:19,820 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:19,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:19,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 03:08:19,821 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-17 03:08:19,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1131013991, now seen corresponding path program 1 times [2024-11-17 03:08:19,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:19,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521774614] [2024-11-17 03:08:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:19,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:20,026 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 03:08:20,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:20,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521774614] [2024-11-17 03:08:20,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521774614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:20,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:20,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:20,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845357411] [2024-11-17 03:08:20,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:20,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:20,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:20,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:20,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:20,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 03:08:20,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 81 flow. Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 03:08:20,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:20,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 03:08:20,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:20,155 INFO L124 PetriNetUnfolderBase]: 79/191 cut-off events. [2024-11-17 03:08:20,156 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:20,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 191 events. 79/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 891 event pairs, 66 based on Foata normal form. 93/276 useless extension candidates. Maximal degree in co-relation 330. Up to 136 conditions per place. [2024-11-17 03:08:20,162 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 12 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2024-11-17 03:08:20,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 81 flow [2024-11-17 03:08:20,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:08:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:08:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 51 transitions. [2024-11-17 03:08:20,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6710526315789473 [2024-11-17 03:08:20,179 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 81 flow. Second operand 2 states and 51 transitions. [2024-11-17 03:08:20,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 81 flow [2024-11-17 03:08:20,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:08:20,185 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 56 flow [2024-11-17 03:08:20,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2024-11-17 03:08:20,192 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -8 predicate places. [2024-11-17 03:08:20,193 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 56 flow [2024-11-17 03:08:20,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 03:08:20,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:20,194 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:20,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:08:20,195 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-17 03:08:20,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash -457599424, now seen corresponding path program 1 times [2024-11-17 03:08:20,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:20,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174832350] [2024-11-17 03:08:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:20,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:20,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:08:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:20,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:08:20,291 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:08:20,292 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-17 03:08:20,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-17 03:08:20,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-17 03:08:20,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-17 03:08:20,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-17 03:08:20,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:08:20,297 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 03:08:20,303 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:08:20,303 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:08:20,334 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:20,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 64 transitions, 148 flow [2024-11-17 03:08:20,354 INFO L124 PetriNetUnfolderBase]: 9/60 cut-off events. [2024-11-17 03:08:20,354 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:08:20,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 60 events. 9/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 67. Up to 6 conditions per place. [2024-11-17 03:08:20,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 64 transitions, 148 flow [2024-11-17 03:08:20,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 45 transitions, 103 flow [2024-11-17 03:08:20,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:20,362 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;@18d0216d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:20,363 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-17 03:08:20,366 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:20,366 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 03:08:20,366 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:20,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:20,367 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 03:08:20,367 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:08:20,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1247524096, now seen corresponding path program 1 times [2024-11-17 03:08:20,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:20,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763074855] [2024-11-17 03:08:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:20,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:20,414 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 03:08:20,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:20,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763074855] [2024-11-17 03:08:20,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763074855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:20,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:20,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:20,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063227856] [2024-11-17 03:08:20,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:20,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:20,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:20,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:20,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-11-17 03:08:20,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 03:08:20,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:20,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-11-17 03:08:20,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:20,590 INFO L124 PetriNetUnfolderBase]: 559/1031 cut-off events. [2024-11-17 03:08:20,590 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-17 03:08:20,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 1031 events. 559/1031 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6000 event pairs, 450 based on Foata normal form. 525/1516 useless extension candidates. Maximal degree in co-relation 1882. Up to 800 conditions per place. [2024-11-17 03:08:20,606 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 16 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2024-11-17 03:08:20,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 109 flow [2024-11-17 03:08:20,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:08:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:08:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 78 transitions. [2024-11-17 03:08:20,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-17 03:08:20,611 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 103 flow. Second operand 2 states and 78 transitions. [2024-11-17 03:08:20,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 109 flow [2024-11-17 03:08:20,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:08:20,614 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 76 flow [2024-11-17 03:08:20,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-11-17 03:08:20,616 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -9 predicate places. [2024-11-17 03:08:20,617 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 76 flow [2024-11-17 03:08:20,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 03:08:20,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:20,617 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:20,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:08:20,617 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:08:20,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:20,618 INFO L85 PathProgramCache]: Analyzing trace with hash 702259376, now seen corresponding path program 1 times [2024-11-17 03:08:20,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:20,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205811686] [2024-11-17 03:08:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:20,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:20,770 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 03:08:20,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:20,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205811686] [2024-11-17 03:08:20,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205811686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:20,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:20,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:20,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915255860] [2024-11-17 03:08:20,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:20,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:08:20,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:20,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:08:20,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:08:20,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-11-17 03:08:20,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:08:20,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:20,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-11-17 03:08:20,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:21,002 INFO L124 PetriNetUnfolderBase]: 620/1172 cut-off events. [2024-11-17 03:08:21,003 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-17 03:08:21,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2138 conditions, 1172 events. 620/1172 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7070 event pairs, 139 based on Foata normal form. 20/1156 useless extension candidates. Maximal degree in co-relation 2133. Up to 760 conditions per place. [2024-11-17 03:08:21,013 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 22 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-11-17 03:08:21,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 149 flow [2024-11-17 03:08:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:08:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:08:21,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-17 03:08:21,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5572916666666666 [2024-11-17 03:08:21,018 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 3 states and 107 transitions. [2024-11-17 03:08:21,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 149 flow [2024-11-17 03:08:21,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 149 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:21,021 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 95 flow [2024-11-17 03:08:21,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-17 03:08:21,024 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2024-11-17 03:08:21,024 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 95 flow [2024-11-17 03:08:21,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:08:21,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:21,025 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:21,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:08:21,025 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:08:21,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:21,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1550484347, now seen corresponding path program 1 times [2024-11-17 03:08:21,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:21,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145006345] [2024-11-17 03:08:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:21,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:08:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:21,066 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:08:21,067 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:08:21,067 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-17 03:08:21,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-17 03:08:21,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-17 03:08:21,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-17 03:08:21,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-17 03:08:21,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-17 03:08:21,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:08:21,068 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-17 03:08:21,069 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:08:21,069 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 03:08:21,092 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:21,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 90 transitions, 216 flow [2024-11-17 03:08:21,101 INFO L124 PetriNetUnfolderBase]: 11/76 cut-off events. [2024-11-17 03:08:21,102 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 03:08:21,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 76 events. 11/76 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 87. Up to 8 conditions per place. [2024-11-17 03:08:21,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 90 transitions, 216 flow [2024-11-17 03:08:21,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 53 transitions, 127 flow [2024-11-17 03:08:21,105 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:21,105 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;@18d0216d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:21,106 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-17 03:08:21,108 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:21,108 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 03:08:21,108 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:21,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:21,108 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 03:08:21,109 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:08:21,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:21,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1438074969, now seen corresponding path program 1 times [2024-11-17 03:08:21,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:21,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149958401] [2024-11-17 03:08:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:21,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:21,135 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 03:08:21,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:21,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149958401] [2024-11-17 03:08:21,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149958401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:21,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:21,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:21,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815008768] [2024-11-17 03:08:21,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:21,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:21,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:21,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:21,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:21,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 90 [2024-11-17 03:08:21,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:08:21,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:21,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 90 [2024-11-17 03:08:21,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:21,708 INFO L124 PetriNetUnfolderBase]: 3247/5175 cut-off events. [2024-11-17 03:08:21,708 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2024-11-17 03:08:21,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9718 conditions, 5175 events. 3247/5175 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 33289 event pairs, 2562 based on Foata normal form. 2621/7612 useless extension candidates. Maximal degree in co-relation 9706. Up to 4224 conditions per place. [2024-11-17 03:08:21,755 INFO L140 encePairwiseOnDemand]: 81/90 looper letters, 20 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2024-11-17 03:08:21,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 139 flow [2024-11-17 03:08:21,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:08:21,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:08:21,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 105 transitions. [2024-11-17 03:08:21,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-17 03:08:21,761 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 127 flow. Second operand 2 states and 105 transitions. [2024-11-17 03:08:21,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 139 flow [2024-11-17 03:08:21,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 136 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 03:08:21,763 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 96 flow [2024-11-17 03:08:21,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-17 03:08:21,765 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -10 predicate places. [2024-11-17 03:08:21,765 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 96 flow [2024-11-17 03:08:21,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 03:08:21,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:21,765 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:21,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:08:21,766 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:08:21,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:21,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1077681161, now seen corresponding path program 1 times [2024-11-17 03:08:21,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:21,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231068151] [2024-11-17 03:08:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:21,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:21,858 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 03:08:21,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:21,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231068151] [2024-11-17 03:08:21,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231068151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:21,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:21,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:21,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720938325] [2024-11-17 03:08:21,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:21,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:08:21,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:21,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:08:21,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:08:21,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 90 [2024-11-17 03:08:21,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 03:08:21,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:21,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 90 [2024-11-17 03:08:21,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:22,459 INFO L124 PetriNetUnfolderBase]: 3515/5723 cut-off events. [2024-11-17 03:08:22,460 INFO L125 PetriNetUnfolderBase]: For 306/306 co-relation queries the response was YES. [2024-11-17 03:08:22,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10629 conditions, 5723 events. 3515/5723 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 38130 event pairs, 724 based on Foata normal form. 44/5593 useless extension candidates. Maximal degree in co-relation 10623. Up to 4267 conditions per place. [2024-11-17 03:08:22,519 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 28 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2024-11-17 03:08:22,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 194 flow [2024-11-17 03:08:22,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:08:22,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:08:22,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-17 03:08:22,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-11-17 03:08:22,521 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 96 flow. Second operand 3 states and 147 transitions. [2024-11-17 03:08:22,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 194 flow [2024-11-17 03:08:22,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:22,524 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 122 flow [2024-11-17 03:08:22,524 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-11-17 03:08:22,526 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2024-11-17 03:08:22,526 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 122 flow [2024-11-17 03:08:22,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 03:08:22,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:22,527 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:22,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:08:22,527 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:08:22,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:22,529 INFO L85 PathProgramCache]: Analyzing trace with hash -2064192323, now seen corresponding path program 1 times [2024-11-17 03:08:22,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:22,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158514749] [2024-11-17 03:08:22,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:22,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:22,630 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 03:08:22,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:22,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158514749] [2024-11-17 03:08:22,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158514749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:22,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:22,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:08:22,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141288764] [2024-11-17 03:08:22,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:22,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:08:22,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:22,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:08:22,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:08:22,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 90 [2024-11-17 03:08:22,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:08:22,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:22,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 90 [2024-11-17 03:08:22,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:22,776 INFO L124 PetriNetUnfolderBase]: 456/1110 cut-off events. [2024-11-17 03:08:22,777 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-11-17 03:08:22,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2334 conditions, 1110 events. 456/1110 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6898 event pairs, 102 based on Foata normal form. 618/1706 useless extension candidates. Maximal degree in co-relation 2326. Up to 633 conditions per place. [2024-11-17 03:08:22,788 INFO L140 encePairwiseOnDemand]: 82/90 looper letters, 21 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-11-17 03:08:22,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 205 flow [2024-11-17 03:08:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:08:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:08:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2024-11-17 03:08:22,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-17 03:08:22,792 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 122 flow. Second operand 3 states and 144 transitions. [2024-11-17 03:08:22,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 205 flow [2024-11-17 03:08:22,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:08:22,795 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 134 flow [2024-11-17 03:08:22,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-17 03:08:22,797 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -6 predicate places. [2024-11-17 03:08:22,798 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 134 flow [2024-11-17 03:08:22,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:08:22,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:22,799 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:22,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:08:22,799 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:08:22,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:22,800 INFO L85 PathProgramCache]: Analyzing trace with hash -496691289, now seen corresponding path program 1 times [2024-11-17 03:08:22,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:22,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040215056] [2024-11-17 03:08:22,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:22,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:22,813 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:08:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:22,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:08:22,830 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:08:22,830 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-17 03:08:22,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-17 03:08:22,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-17 03:08:22,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-17 03:08:22,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-17 03:08:22,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-17 03:08:22,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-17 03:08:22,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:08:22,833 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:08:22,834 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:08:22,835 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-17 03:08:22,871 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:22,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 116 transitions, 288 flow [2024-11-17 03:08:22,883 INFO L124 PetriNetUnfolderBase]: 13/92 cut-off events. [2024-11-17 03:08:22,884 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-17 03:08:22,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 92 events. 13/92 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 237 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 108. Up to 10 conditions per place. [2024-11-17 03:08:22,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 116 transitions, 288 flow [2024-11-17 03:08:22,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 61 transitions, 153 flow [2024-11-17 03:08:22,886 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:22,887 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;@18d0216d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:22,887 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-17 03:08:22,888 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:22,888 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 03:08:22,889 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:22,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:22,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 03:08:22,889 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:08:22,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:22,889 INFO L85 PathProgramCache]: Analyzing trace with hash 597876594, now seen corresponding path program 1 times [2024-11-17 03:08:22,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:22,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787650321] [2024-11-17 03:08:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:22,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:22,902 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 03:08:22,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:22,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787650321] [2024-11-17 03:08:22,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787650321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:22,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:22,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:22,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291071239] [2024-11-17 03:08:22,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:22,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:22,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:22,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:22,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 116 [2024-11-17 03:08:22,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 153 flow. Second operand has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:08:22,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:22,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 116 [2024-11-17 03:08:22,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:25,511 INFO L124 PetriNetUnfolderBase]: 17071/24823 cut-off events. [2024-11-17 03:08:25,512 INFO L125 PetriNetUnfolderBase]: For 4208/4208 co-relation queries the response was YES. [2024-11-17 03:08:25,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47415 conditions, 24823 events. 17071/24823 cut-off events. For 4208/4208 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 169463 event pairs, 13314 based on Foata normal form. 12537/36600 useless extension candidates. Maximal degree in co-relation 47402. Up to 20992 conditions per place. [2024-11-17 03:08:25,738 INFO L140 encePairwiseOnDemand]: 106/116 looper letters, 24 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-11-17 03:08:25,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 171 flow [2024-11-17 03:08:25,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:08:25,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:08:25,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 132 transitions. [2024-11-17 03:08:25,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-11-17 03:08:25,740 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 153 flow. Second operand 2 states and 132 transitions. [2024-11-17 03:08:25,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 171 flow [2024-11-17 03:08:25,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 46 transitions, 164 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-17 03:08:25,748 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 116 flow [2024-11-17 03:08:25,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-11-17 03:08:25,750 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2024-11-17 03:08:25,750 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 116 flow [2024-11-17 03:08:25,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:08:25,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:25,750 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:25,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:08:25,751 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:08:25,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash -698982366, now seen corresponding path program 1 times [2024-11-17 03:08:25,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:25,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877349757] [2024-11-17 03:08:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:25,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:25,816 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 03:08:25,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:25,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877349757] [2024-11-17 03:08:25,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877349757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:25,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:25,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:25,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903077262] [2024-11-17 03:08:25,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:25,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:08:25,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:25,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:08:25,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:08:25,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 116 [2024-11-17 03:08:25,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 03:08:25,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:25,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 116 [2024-11-17 03:08:25,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:27,856 INFO L124 PetriNetUnfolderBase]: 17930/26582 cut-off events. [2024-11-17 03:08:27,856 INFO L125 PetriNetUnfolderBase]: For 1302/1302 co-relation queries the response was YES. [2024-11-17 03:08:27,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49936 conditions, 26582 events. 17930/26582 cut-off events. For 1302/1302 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 186814 event pairs, 3961 based on Foata normal form. 92/25855 useless extension candidates. Maximal degree in co-relation 49929. Up to 21382 conditions per place. [2024-11-17 03:08:28,054 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 34 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-11-17 03:08:28,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 239 flow [2024-11-17 03:08:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:08:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:08:28,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-11-17 03:08:28,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5373563218390804 [2024-11-17 03:08:28,056 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 116 flow. Second operand 3 states and 187 transitions. [2024-11-17 03:08:28,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 239 flow [2024-11-17 03:08:28,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 239 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:28,062 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 149 flow [2024-11-17 03:08:28,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-11-17 03:08:28,063 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -8 predicate places. [2024-11-17 03:08:28,063 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 149 flow [2024-11-17 03:08:28,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 03:08:28,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:28,064 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:28,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:08:28,064 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:08:28,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:28,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1641015934, now seen corresponding path program 1 times [2024-11-17 03:08:28,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:28,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499801610] [2024-11-17 03:08:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:28,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:28,128 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 03:08:28,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:28,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499801610] [2024-11-17 03:08:28,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499801610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:28,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:28,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:08:28,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694615173] [2024-11-17 03:08:28,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:28,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:08:28,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:28,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:08:28,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:08:28,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 116 [2024-11-17 03:08:28,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 03:08:28,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:28,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 116 [2024-11-17 03:08:28,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:28,364 INFO L124 PetriNetUnfolderBase]: 1187/2708 cut-off events. [2024-11-17 03:08:28,364 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-11-17 03:08:28,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5787 conditions, 2708 events. 1187/2708 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 19561 event pairs, 260 based on Foata normal form. 2076/4744 useless extension candidates. Maximal degree in co-relation 5778. Up to 1627 conditions per place. [2024-11-17 03:08:28,385 INFO L140 encePairwiseOnDemand]: 106/116 looper letters, 25 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2024-11-17 03:08:28,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 251 flow [2024-11-17 03:08:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:08:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:08:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2024-11-17 03:08:28,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5258620689655172 [2024-11-17 03:08:28,387 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 149 flow. Second operand 3 states and 183 transitions. [2024-11-17 03:08:28,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 251 flow [2024-11-17 03:08:28,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:08:28,390 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 164 flow [2024-11-17 03:08:28,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-11-17 03:08:28,392 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2024-11-17 03:08:28,392 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 164 flow [2024-11-17 03:08:28,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 03:08:28,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:28,393 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:28,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:08:28,393 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:08:28,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1954093386, now seen corresponding path program 1 times [2024-11-17 03:08:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:28,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48563392] [2024-11-17 03:08:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:28,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:28,588 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 03:08:28,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:28,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48563392] [2024-11-17 03:08:28,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48563392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:28,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:28,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:08:28,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209098286] [2024-11-17 03:08:28,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:28,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:08:28,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:28,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:08:28,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:08:28,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 116 [2024-11-17 03:08:28,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 03:08:28,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:28,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 116 [2024-11-17 03:08:28,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:29,058 INFO L124 PetriNetUnfolderBase]: 1731/3970 cut-off events. [2024-11-17 03:08:29,059 INFO L125 PetriNetUnfolderBase]: For 1183/1231 co-relation queries the response was YES. [2024-11-17 03:08:29,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9607 conditions, 3970 events. 1731/3970 cut-off events. For 1183/1231 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31679 event pairs, 86 based on Foata normal form. 42/4001 useless extension candidates. Maximal degree in co-relation 9598. Up to 2243 conditions per place. [2024-11-17 03:08:29,096 INFO L140 encePairwiseOnDemand]: 110/116 looper letters, 49 selfloop transitions, 9 changer transitions 0/80 dead transitions. [2024-11-17 03:08:29,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 410 flow [2024-11-17 03:08:29,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:08:29,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:08:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2024-11-17 03:08:29,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5495689655172413 [2024-11-17 03:08:29,098 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 164 flow. Second operand 4 states and 255 transitions. [2024-11-17 03:08:29,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 410 flow [2024-11-17 03:08:29,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 384 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:08:29,105 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 206 flow [2024-11-17 03:08:29,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-11-17 03:08:29,106 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2024-11-17 03:08:29,106 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 206 flow [2024-11-17 03:08:29,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 03:08:29,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:29,107 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:29,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 03:08:29,108 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:08:29,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:29,108 INFO L85 PathProgramCache]: Analyzing trace with hash -115848764, now seen corresponding path program 1 times [2024-11-17 03:08:29,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:29,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853659725] [2024-11-17 03:08:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:29,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:29,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:08:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:29,139 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:08:29,141 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:08:29,142 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-17 03:08:29,142 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-17 03:08:29,142 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-17 03:08:29,142 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-11-17 03:08:29,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-17 03:08:29,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-11-17 03:08:29,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-17 03:08:29,143 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-17 03:08:29,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 03:08:29,144 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-17 03:08:29,145 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:08:29,145 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-17 03:08:29,183 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:29,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 142 transitions, 364 flow [2024-11-17 03:08:29,196 INFO L124 PetriNetUnfolderBase]: 15/108 cut-off events. [2024-11-17 03:08:29,196 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-17 03:08:29,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 108 events. 15/108 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 292 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 130. Up to 12 conditions per place. [2024-11-17 03:08:29,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 142 transitions, 364 flow [2024-11-17 03:08:29,198 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 69 transitions, 181 flow [2024-11-17 03:08:29,200 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:29,200 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;@18d0216d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:29,200 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-17 03:08:29,202 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:29,202 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 03:08:29,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:29,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:29,203 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 03:08:29,203 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-17 03:08:29,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash 526848075, now seen corresponding path program 1 times [2024-11-17 03:08:29,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:29,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045599517] [2024-11-17 03:08:29,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:29,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:29,216 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 03:08:29,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:29,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045599517] [2024-11-17 03:08:29,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045599517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:29,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:29,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:29,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663347164] [2024-11-17 03:08:29,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:29,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:29,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:29,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:29,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:29,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 142 [2024-11-17 03:08:29,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 181 flow. Second operand has 2 states, 2 states have (on average 62.0) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:08:29,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:29,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 142 [2024-11-17 03:08:29,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:38,696 INFO L124 PetriNetUnfolderBase]: 84655/115703 cut-off events. [2024-11-17 03:08:38,696 INFO L125 PetriNetUnfolderBase]: For 26992/26992 co-relation queries the response was YES. [2024-11-17 03:08:39,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223800 conditions, 115703 events. 84655/115703 cut-off events. For 26992/26992 co-relation queries the response was YES. Maximal size of possible extension queue 4047. Compared 817067 event pairs, 65538 based on Foata normal form. 58366/171006 useless extension candidates. Maximal degree in co-relation 223786. Up to 100352 conditions per place. [2024-11-17 03:08:39,618 INFO L140 encePairwiseOnDemand]: 131/142 looper letters, 28 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2024-11-17 03:08:39,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 205 flow [2024-11-17 03:08:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:08:39,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:08:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 159 transitions. [2024-11-17 03:08:39,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5598591549295775 [2024-11-17 03:08:39,620 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 181 flow. Second operand 2 states and 159 transitions. [2024-11-17 03:08:39,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 205 flow [2024-11-17 03:08:39,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 192 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-17 03:08:39,636 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 136 flow [2024-11-17 03:08:39,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-11-17 03:08:39,637 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2024-11-17 03:08:39,637 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 136 flow [2024-11-17 03:08:39,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 62.0) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:08:39,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:39,638 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:39,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 03:08:39,638 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-17 03:08:39,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:39,639 INFO L85 PathProgramCache]: Analyzing trace with hash -817165573, now seen corresponding path program 1 times [2024-11-17 03:08:39,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:39,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003827360] [2024-11-17 03:08:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:39,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:39,686 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 03:08:39,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:39,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003827360] [2024-11-17 03:08:39,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003827360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:39,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:39,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:39,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456476719] [2024-11-17 03:08:39,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:39,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:08:39,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:39,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:08:39,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:08:39,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 142 [2024-11-17 03:08:39,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 03:08:39,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:39,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 142 [2024-11-17 03:08:39,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:48,563 INFO L124 PetriNetUnfolderBase]: 87029/120965 cut-off events. [2024-11-17 03:08:48,564 INFO L125 PetriNetUnfolderBase]: For 5082/5082 co-relation queries the response was YES. [2024-11-17 03:08:49,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229187 conditions, 120965 events. 87029/120965 cut-off events. For 5082/5082 co-relation queries the response was YES. Maximal size of possible extension queue 4363. Compared 882100 event pairs, 21478 based on Foata normal form. 188/117524 useless extension candidates. Maximal degree in co-relation 229179. Up to 101893 conditions per place. [2024-11-17 03:08:49,570 INFO L140 encePairwiseOnDemand]: 135/142 looper letters, 40 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2024-11-17 03:08:49,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 284 flow [2024-11-17 03:08:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:08:49,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:08:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2024-11-17 03:08:49,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5328638497652582 [2024-11-17 03:08:49,572 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 136 flow. Second operand 3 states and 227 transitions. [2024-11-17 03:08:49,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 284 flow [2024-11-17 03:08:49,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:08:49,579 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 176 flow [2024-11-17 03:08:49,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-11-17 03:08:49,580 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2024-11-17 03:08:49,581 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 176 flow [2024-11-17 03:08:49,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 03:08:49,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:49,581 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:49,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 03:08:49,581 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-17 03:08:49,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:49,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1716159361, now seen corresponding path program 1 times [2024-11-17 03:08:49,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:49,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799705434] [2024-11-17 03:08:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:49,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:49,637 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 03:08:49,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:49,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799705434] [2024-11-17 03:08:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799705434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:49,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:49,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:08:49,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079065978] [2024-11-17 03:08:49,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:49,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:08:49,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:49,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:08:49,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:08:49,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 142 [2024-11-17 03:08:49,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 03:08:49,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:49,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 142 [2024-11-17 03:08:49,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:50,379 INFO L124 PetriNetUnfolderBase]: 2900/6334 cut-off events. [2024-11-17 03:08:50,380 INFO L125 PetriNetUnfolderBase]: For 1688/1688 co-relation queries the response was YES. [2024-11-17 03:08:50,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13698 conditions, 6334 events. 2900/6334 cut-off events. For 1688/1688 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 51729 event pairs, 648 based on Foata normal form. 6162/12423 useless extension candidates. Maximal degree in co-relation 13688. Up to 3945 conditions per place. [2024-11-17 03:08:50,420 INFO L140 encePairwiseOnDemand]: 130/142 looper letters, 29 selfloop transitions, 12 changer transitions 0/66 dead transitions. [2024-11-17 03:08:50,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 297 flow [2024-11-17 03:08:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:08:50,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:08:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2024-11-17 03:08:50,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5211267605633803 [2024-11-17 03:08:50,422 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 176 flow. Second operand 3 states and 222 transitions. [2024-11-17 03:08:50,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 297 flow [2024-11-17 03:08:50,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 291 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:08:50,425 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 194 flow [2024-11-17 03:08:50,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-11-17 03:08:50,426 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2024-11-17 03:08:50,426 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 194 flow [2024-11-17 03:08:50,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 03:08:50,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:50,427 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:50,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 03:08:50,427 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-17 03:08:50,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:50,428 INFO L85 PathProgramCache]: Analyzing trace with hash -336747408, now seen corresponding path program 1 times [2024-11-17 03:08:50,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:50,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455563756] [2024-11-17 03:08:50,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:50,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:50,507 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 03:08:50,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:50,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455563756] [2024-11-17 03:08:50,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455563756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:50,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:50,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:08:50,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670426027] [2024-11-17 03:08:50,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:50,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:08:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:50,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:08:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:08:50,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 142 [2024-11-17 03:08:50,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 03:08:50,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:50,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 142 [2024-11-17 03:08:50,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:51,099 INFO L124 PetriNetUnfolderBase]: 4045/8751 cut-off events. [2024-11-17 03:08:51,100 INFO L125 PetriNetUnfolderBase]: For 2482/2562 co-relation queries the response was YES. [2024-11-17 03:08:51,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21647 conditions, 8751 events. 4045/8751 cut-off events. For 2482/2562 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 75797 event pairs, 162 based on Foata normal form. 65/8804 useless extension candidates. Maximal degree in co-relation 21637. Up to 5638 conditions per place. [2024-11-17 03:08:51,168 INFO L140 encePairwiseOnDemand]: 135/142 looper letters, 58 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2024-11-17 03:08:51,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 492 flow [2024-11-17 03:08:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:08:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:08:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2024-11-17 03:08:51,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.545774647887324 [2024-11-17 03:08:51,170 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 194 flow. Second operand 4 states and 310 transitions. [2024-11-17 03:08:51,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 492 flow [2024-11-17 03:08:51,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 94 transitions, 461 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:08:51,182 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 246 flow [2024-11-17 03:08:51,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-11-17 03:08:51,183 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2024-11-17 03:08:51,183 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 246 flow [2024-11-17 03:08:51,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 03:08:51,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:51,183 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:51,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-17 03:08:51,184 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-17 03:08:51,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:51,184 INFO L85 PathProgramCache]: Analyzing trace with hash 542879593, now seen corresponding path program 1 times [2024-11-17 03:08:51,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:51,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379235685] [2024-11-17 03:08:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:51,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:51,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:51,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379235685] [2024-11-17 03:08:51,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379235685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:08:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676844414] [2024-11-17 03:08:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:51,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:08:51,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:08:51,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:08:51,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:08:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:51,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 03:08:51,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:08:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:51,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:08:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:08:51,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676844414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:08:51,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:08:51,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 03:08:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519034031] [2024-11-17 03:08:51,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:08:51,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 03:08:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 03:08:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-17 03:08:51,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 142 [2024-11-17 03:08:51,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 246 flow. Second operand has 11 states, 11 states have (on average 58.54545454545455) internal successors, (644), 11 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 03:08:51,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:51,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 142 [2024-11-17 03:08:51,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:08:53,857 INFO L124 PetriNetUnfolderBase]: 10819/21563 cut-off events. [2024-11-17 03:08:53,857 INFO L125 PetriNetUnfolderBase]: For 9985/10315 co-relation queries the response was YES. [2024-11-17 03:08:53,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51832 conditions, 21563 events. 10819/21563 cut-off events. For 9985/10315 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 198677 event pairs, 2132 based on Foata normal form. 535/22039 useless extension candidates. Maximal degree in co-relation 51820. Up to 6686 conditions per place. [2024-11-17 03:08:54,017 INFO L140 encePairwiseOnDemand]: 135/142 looper letters, 60 selfloop transitions, 26 changer transitions 0/108 dead transitions. [2024-11-17 03:08:54,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 108 transitions, 608 flow [2024-11-17 03:08:54,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:08:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:08:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2024-11-17 03:08:54,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49859154929577465 [2024-11-17 03:08:54,019 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 246 flow. Second operand 5 states and 354 transitions. [2024-11-17 03:08:54,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 108 transitions, 608 flow [2024-11-17 03:08:54,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 108 transitions, 586 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-17 03:08:54,032 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 326 flow [2024-11-17 03:08:54,032 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=326, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-11-17 03:08:54,033 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2024-11-17 03:08:54,033 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 326 flow [2024-11-17 03:08:54,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 58.54545454545455) internal successors, (644), 11 states have internal predecessors, (644), 0 states have call successors, (0), 0 states 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 03:08:54,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:54,034 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:08:54,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:08:54,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:08:54,239 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-17 03:08:54,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash -63450926, now seen corresponding path program 1 times [2024-11-17 03:08:54,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:54,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972982870] [2024-11-17 03:08:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:54,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:54,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:08:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:08:54,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:08:54,276 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:08:54,276 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-17 03:08:54,276 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2024-11-17 03:08:54,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 9 remaining) [2024-11-17 03:08:54,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 9 remaining) [2024-11-17 03:08:54,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2024-11-17 03:08:54,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2024-11-17 03:08:54,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2024-11-17 03:08:54,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2024-11-17 03:08:54,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-17 03:08:54,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-17 03:08:54,281 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-17 03:08:54,281 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:08:54,281 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-17 03:08:54,317 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:08:54,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 168 transitions, 444 flow [2024-11-17 03:08:54,328 INFO L124 PetriNetUnfolderBase]: 17/124 cut-off events. [2024-11-17 03:08:54,328 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-17 03:08:54,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 124 events. 17/124 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 308 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 153. Up to 14 conditions per place. [2024-11-17 03:08:54,329 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 168 transitions, 444 flow [2024-11-17 03:08:54,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 77 transitions, 211 flow [2024-11-17 03:08:54,334 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:08:54,334 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;@18d0216d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:08:54,334 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-17 03:08:54,335 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:08:54,335 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-17 03:08:54,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:08:54,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:08:54,336 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 03:08:54,336 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-11-17 03:08:54,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:08:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1224989412, now seen corresponding path program 1 times [2024-11-17 03:08:54,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:08:54,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726125987] [2024-11-17 03:08:54,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:08:54,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:08:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:08:54,348 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 03:08:54,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:08:54,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726125987] [2024-11-17 03:08:54,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726125987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:08:54,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:08:54,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:08:54,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112806608] [2024-11-17 03:08:54,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:08:54,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:08:54,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:08:54,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:08:54,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:08:54,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 168 [2024-11-17 03:08:54,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 211 flow. Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 03:08:54,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:08:54,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 168 [2024-11-17 03:08:54,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand