./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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../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.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:21:33,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:21:33,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:21:33,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:21:33,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:21:33,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:21:33,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:21:33,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:21:33,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:21:33,678 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:21:33,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:21:33,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:21:33,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:21:33,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:21:33,681 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:21:33,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:21:33,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:21:33,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:21:33,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:21:33,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:21:33,682 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:21:33,686 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:21:33,686 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:21:33,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:21:33,686 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:21:33,686 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:21:33,687 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:21:33,687 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:21:33,687 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:21:33,687 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:21:33,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:21:33,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:21:33,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:21:33,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:21:33,688 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:21:33,688 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:21:33,688 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:21:33,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:21:33,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:21:33,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:21:33,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:21:33,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:21:33,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5289904c0d34e84fc731c9bca51c5d8bc54117a73409b0419290d8896b60d2d [2024-11-22 21:21:33,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:21:33,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:21:33,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:21:33,928 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:21:33,929 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:21:33,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2024-11-22 21:21:35,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:21:35,459 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:21:35,460 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2024-11-22 21:21:35,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d347efb43/0816b353af3148448e4cfb48b71e72b9/FLAGb195b70bf [2024-11-22 21:21:35,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d347efb43/0816b353af3148448e4cfb48b71e72b9 [2024-11-22 21:21:35,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:21:35,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:21:35,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:21:35,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:21:35,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:21:35,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67cceef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35, skipping insertion in model container [2024-11-22 21:21:35,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,533 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:21:35,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:21:35,828 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:21:35,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:21:35,905 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:21:35,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35 WrapperNode [2024-11-22 21:21:35,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:21:35,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:21:35,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:21:35,907 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:21:35,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,949 INFO L138 Inliner]: procedures = 162, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-22 21:21:35,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:21:35,950 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:21:35,950 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:21:35,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:21:35,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,969 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]. [2024-11-22 21:21:35,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,977 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:21:35,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:21:35,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:21:35,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:21:35,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (1/1) ... [2024-11-22 21:21:35,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:21:35,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:21:36,009 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) [2024-11-22 21:21:36,012 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 [2024-11-22 21:21:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-22 21:21:36,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-22 21:21:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-22 21:21:36,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-22 21:21:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 21:21:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:21:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:21:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:21:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 21:21:36,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:21:36,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:21:36,049 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:21:36,146 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:21:36,148 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:21:36,240 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:21:36,241 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:21:36,310 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:21:36,314 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 21:21:36,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:21:36 BoogieIcfgContainer [2024-11-22 21:21:36,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:21:36,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:21:36,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:21:36,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:21:36,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:21:35" (1/3) ... [2024-11-22 21:21:36,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdde121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:21:36, skipping insertion in model container [2024-11-22 21:21:36,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:21:35" (2/3) ... [2024-11-22 21:21:36,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdde121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:21:36, skipping insertion in model container [2024-11-22 21:21:36,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:21:36" (3/3) ... [2024-11-22 21:21:36,322 INFO L112 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs.i [2024-11-22 21:21:36,336 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:21:36,336 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 21:21:36,336 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:21:36,374 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:21:36,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 31 transitions, 70 flow [2024-11-22 21:21:36,425 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-22 21:21:36,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:21:36,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 4/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 95 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-11-22 21:21:36,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 31 transitions, 70 flow [2024-11-22 21:21:36,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 67 flow [2024-11-22 21:21:36,438 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:21:36,443 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;@24fcb5ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:21:36,446 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-22 21:21:36,454 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:21:36,454 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-22 21:21:36,454 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:21:36,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:36,456 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:21:36,456 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)] === [2024-11-22 21:21:36,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:36,461 INFO L85 PathProgramCache]: Analyzing trace with hash 206163919, now seen corresponding path program 1 times [2024-11-22 21:21:36,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:36,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013667913] [2024-11-22 21:21:36,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:36,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:36,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:36,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013667913] [2024-11-22 21:21:36,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013667913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:36,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:36,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:21:36,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715212328] [2024-11-22 21:21:36,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:36,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 21:21:36,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:36,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 21:21:36,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 21:21:36,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2024-11-22 21:21:36,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 67 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:36,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:36,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2024-11-22 21:21:36,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:36,718 INFO L124 PetriNetUnfolderBase]: 79/166 cut-off events. [2024-11-22 21:21:36,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:21:36,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 166 events. 79/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 720 event pairs, 66 based on Foata normal form. 44/202 useless extension candidates. Maximal degree in co-relation 305. Up to 136 conditions per place. [2024-11-22 21:21:36,721 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 12 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2024-11-22 21:21:36,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 75 flow [2024-11-22 21:21:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 21:21:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 21:21:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 41 transitions. [2024-11-22 21:21:36,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-22 21:21:36,734 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 67 flow. Second operand 2 states and 41 transitions. [2024-11-22 21:21:36,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 75 flow [2024-11-22 21:21:36,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:21:36,765 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 50 flow [2024-11-22 21:21:36,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2024-11-22 21:21:36,771 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -6 predicate places. [2024-11-22 21:21:36,771 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 50 flow [2024-11-22 21:21:36,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:36,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:36,772 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:36,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:21:36,773 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-22 21:21:36,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:36,774 INFO L85 PathProgramCache]: Analyzing trace with hash 26218542, now seen corresponding path program 1 times [2024-11-22 21:21:36,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:36,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602859017] [2024-11-22 21:21:36,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:36,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:21:36,825 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:21:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:21:36,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:21:36,878 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:21:36,879 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-22 21:21:36,881 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-22 21:21:36,881 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-22 21:21:36,881 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-22 21:21:36,881 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-22 21:21:36,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:21:36,882 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-22 21:21:36,884 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:21:36,884 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 21:21:36,907 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:21:36,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 53 transitions, 126 flow [2024-11-22 21:21:36,925 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-22 21:21:36,928 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:21:36,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-11-22 21:21:36,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 53 transitions, 126 flow [2024-11-22 21:21:36,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 87 flow [2024-11-22 21:21:36,931 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:21:36,932 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;@24fcb5ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:21:36,932 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-22 21:21:36,934 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:21:36,934 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-22 21:21:36,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:21:36,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:36,935 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:21:36,935 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)] === [2024-11-22 21:21:36,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:36,935 INFO L85 PathProgramCache]: Analyzing trace with hash 257367695, now seen corresponding path program 1 times [2024-11-22 21:21:36,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:36,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56639472] [2024-11-22 21:21:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:36,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:36,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:36,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56639472] [2024-11-22 21:21:36,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56639472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:36,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:36,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:21:36,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165791569] [2024-11-22 21:21:36,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:36,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 21:21:36,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:36,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 21:21:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 21:21:36,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-22 21:21:36,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 87 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:36,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:36,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-22 21:21:36,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:37,115 INFO L124 PetriNetUnfolderBase]: 559/918 cut-off events. [2024-11-22 21:21:37,115 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-22 21:21:37,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 918 events. 559/918 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4736 event pairs, 450 based on Foata normal form. 188/1090 useless extension candidates. Maximal degree in co-relation 1769. Up to 800 conditions per place. [2024-11-22 21:21:37,126 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 16 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2024-11-22 21:21:37,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 101 flow [2024-11-22 21:21:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 21:21:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 21:21:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2024-11-22 21:21:37,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-11-22 21:21:37,129 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 87 flow. Second operand 2 states and 64 transitions. [2024-11-22 21:21:37,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 101 flow [2024-11-22 21:21:37,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:21:37,130 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 68 flow [2024-11-22 21:21:37,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-22 21:21:37,131 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -7 predicate places. [2024-11-22 21:21:37,132 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 68 flow [2024-11-22 21:21:37,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:37,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:37,133 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:37,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:21:37,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:21:37,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:37,134 INFO L85 PathProgramCache]: Analyzing trace with hash -823457228, now seen corresponding path program 1 times [2024-11-22 21:21:37,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:37,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671974694] [2024-11-22 21:21:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:37,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:37,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:37,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671974694] [2024-11-22 21:21:37,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671974694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:37,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:37,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:21:37,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26310490] [2024-11-22 21:21:37,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:37,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:21:37,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:37,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:21:37,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:21:37,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-22 21:21:37,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:37,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:37,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-22 21:21:37,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:37,386 INFO L124 PetriNetUnfolderBase]: 620/1066 cut-off events. [2024-11-22 21:21:37,387 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-22 21:21:37,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2032 conditions, 1066 events. 620/1066 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5945 event pairs, 139 based on Foata normal form. 20/1077 useless extension candidates. Maximal degree in co-relation 2027. Up to 760 conditions per place. [2024-11-22 21:21:37,394 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 22 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-11-22 21:21:37,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 141 flow [2024-11-22 21:21:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:21:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:21:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-22 21:21:37,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.559748427672956 [2024-11-22 21:21:37,397 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 68 flow. Second operand 3 states and 89 transitions. [2024-11-22 21:21:37,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 141 flow [2024-11-22 21:21:37,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 141 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:21:37,399 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 87 flow [2024-11-22 21:21:37,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-11-22 21:21:37,402 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-22 21:21:37,402 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 87 flow [2024-11-22 21:21:37,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:37,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:37,403 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:37,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:21:37,403 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:21:37,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:37,404 INFO L85 PathProgramCache]: Analyzing trace with hash -212865088, now seen corresponding path program 1 times [2024-11-22 21:21:37,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:37,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535156122] [2024-11-22 21:21:37,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:37,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:21:37,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:21:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:21:37,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:21:37,453 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:21:37,454 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-22 21:21:37,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-22 21:21:37,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-22 21:21:37,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-22 21:21:37,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-22 21:21:37,454 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-22 21:21:37,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:21:37,455 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-22 21:21:37,455 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:21:37,455 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-22 21:21:37,482 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:21:37,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 186 flow [2024-11-22 21:21:37,492 INFO L124 PetriNetUnfolderBase]: 6/58 cut-off events. [2024-11-22 21:21:37,492 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-22 21:21:37,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 58 events. 6/58 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 160 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2024-11-22 21:21:37,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 75 transitions, 186 flow [2024-11-22 21:21:37,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 44 transitions, 109 flow [2024-11-22 21:21:37,494 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:21:37,496 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;@24fcb5ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:21:37,497 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-22 21:21:37,498 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:21:37,499 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-22 21:21:37,499 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:21:37,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:37,499 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:21:37,499 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)] === [2024-11-22 21:21:37,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash 329566181, now seen corresponding path program 1 times [2024-11-22 21:21:37,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:37,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974942285] [2024-11-22 21:21:37,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:37,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:37,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:37,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974942285] [2024-11-22 21:21:37,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974942285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:37,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:37,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:21:37,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014376897] [2024-11-22 21:21:37,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:37,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 21:21:37,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:37,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 21:21:37,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 21:21:37,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 75 [2024-11-22 21:21:37,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:37,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:37,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 75 [2024-11-22 21:21:37,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:37,891 INFO L124 PetriNetUnfolderBase]: 3247/4710 cut-off events. [2024-11-22 21:21:37,891 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2024-11-22 21:21:37,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9253 conditions, 4710 events. 3247/4710 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 26567 event pairs, 2562 based on Foata normal form. 763/5404 useless extension candidates. Maximal degree in co-relation 9241. Up to 4224 conditions per place. [2024-11-22 21:21:37,920 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 20 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-22 21:21:37,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 129 flow [2024-11-22 21:21:37,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 21:21:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 21:21:37,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 87 transitions. [2024-11-22 21:21:37,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-22 21:21:37,926 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 109 flow. Second operand 2 states and 87 transitions. [2024-11-22 21:21:37,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 129 flow [2024-11-22 21:21:37,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 126 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 21:21:37,928 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 86 flow [2024-11-22 21:21:37,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-22 21:21:37,929 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places. [2024-11-22 21:21:37,929 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 86 flow [2024-11-22 21:21:37,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:37,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:37,930 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:37,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:21:37,930 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 21:21:37,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:37,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2086411230, now seen corresponding path program 1 times [2024-11-22 21:21:37,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:37,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593723558] [2024-11-22 21:21:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:37,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:37,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:37,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593723558] [2024-11-22 21:21:37,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593723558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:37,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:37,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:21:37,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986327549] [2024-11-22 21:21:37,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:37,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:21:37,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:37,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:21:37,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:21:37,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 75 [2024-11-22 21:21:37,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:37,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:37,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 75 [2024-11-22 21:21:37,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:38,363 INFO L124 PetriNetUnfolderBase]: 3515/5257 cut-off events. [2024-11-22 21:21:38,363 INFO L125 PetriNetUnfolderBase]: For 306/306 co-relation queries the response was YES. [2024-11-22 21:21:38,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10163 conditions, 5257 events. 3515/5257 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 31416 event pairs, 724 based on Foata normal form. 44/5273 useless extension candidates. Maximal degree in co-relation 10157. Up to 4267 conditions per place. [2024-11-22 21:21:38,398 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 28 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-11-22 21:21:38,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 184 flow [2024-11-22 21:21:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:21:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:21:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-22 21:21:38,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-11-22 21:21:38,402 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 86 flow. Second operand 3 states and 123 transitions. [2024-11-22 21:21:38,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 184 flow [2024-11-22 21:21:38,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:21:38,405 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 112 flow [2024-11-22 21:21:38,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-11-22 21:21:38,406 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2024-11-22 21:21:38,406 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 112 flow [2024-11-22 21:21:38,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:38,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:38,407 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:38,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:21:38,408 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 21:21:38,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:38,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1401397513, now seen corresponding path program 1 times [2024-11-22 21:21:38,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:38,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127563907] [2024-11-22 21:21:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:38,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:21:38,424 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:21:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:21:38,437 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:21:38,437 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:21:38,437 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-22 21:21:38,437 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-22 21:21:38,437 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-22 21:21:38,438 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-22 21:21:38,438 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-22 21:21:38,438 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-22 21:21:38,438 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-22 21:21:38,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:21:38,440 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-22 21:21:38,441 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:21:38,441 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-22 21:21:38,474 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:21:38,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 97 transitions, 250 flow [2024-11-22 21:21:38,484 INFO L124 PetriNetUnfolderBase]: 7/70 cut-off events. [2024-11-22 21:21:38,484 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-22 21:21:38,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 70 events. 7/70 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 203 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 86. Up to 5 conditions per place. [2024-11-22 21:21:38,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 97 transitions, 250 flow [2024-11-22 21:21:38,485 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 51 transitions, 133 flow [2024-11-22 21:21:38,486 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:21:38,487 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;@24fcb5ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:21:38,487 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-22 21:21:38,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:21:38,488 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-22 21:21:38,488 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:21:38,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:38,489 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:21:38,489 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)] === [2024-11-22 21:21:38,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:38,489 INFO L85 PathProgramCache]: Analyzing trace with hash 422759377, now seen corresponding path program 1 times [2024-11-22 21:21:38,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:38,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643401581] [2024-11-22 21:21:38,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:38,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:38,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:38,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643401581] [2024-11-22 21:21:38,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643401581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:38,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:38,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:21:38,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54036262] [2024-11-22 21:21:38,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:38,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 21:21:38,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 21:21:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 21:21:38,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-11-22 21:21:38,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 133 flow. Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:38,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:38,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-11-22 21:21:38,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:40,100 INFO L124 PetriNetUnfolderBase]: 17071/22950 cut-off events. [2024-11-22 21:21:40,101 INFO L125 PetriNetUnfolderBase]: For 4208/4208 co-relation queries the response was YES. [2024-11-22 21:21:40,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45542 conditions, 22950 events. 17071/22950 cut-off events. For 4208/4208 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 134440 event pairs, 13314 based on Foata normal form. 3067/25760 useless extension candidates. Maximal degree in co-relation 45529. Up to 20992 conditions per place. [2024-11-22 21:21:40,223 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 24 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2024-11-22 21:21:40,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 159 flow [2024-11-22 21:21:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 21:21:40,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 21:21:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 110 transitions. [2024-11-22 21:21:40,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5670103092783505 [2024-11-22 21:21:40,226 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 133 flow. Second operand 2 states and 110 transitions. [2024-11-22 21:21:40,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 159 flow [2024-11-22 21:21:40,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 152 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-22 21:21:40,232 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 104 flow [2024-11-22 21:21:40,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-11-22 21:21:40,234 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2024-11-22 21:21:40,234 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 104 flow [2024-11-22 21:21:40,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:40,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:40,234 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:40,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:21:40,235 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-22 21:21:40,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:40,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2065459860, now seen corresponding path program 1 times [2024-11-22 21:21:40,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:40,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172123764] [2024-11-22 21:21:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:40,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:40,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:40,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172123764] [2024-11-22 21:21:40,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172123764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:40,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:40,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:21:40,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460940581] [2024-11-22 21:21:40,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:40,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:21:40,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:40,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:21:40,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:21:40,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-11-22 21:21:40,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:40,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:40,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-11-22 21:21:40,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:41,689 INFO L124 PetriNetUnfolderBase]: 17930/24628 cut-off events. [2024-11-22 21:21:41,689 INFO L125 PetriNetUnfolderBase]: For 1302/1302 co-relation queries the response was YES. [2024-11-22 21:21:41,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47982 conditions, 24628 events. 17930/24628 cut-off events. For 1302/1302 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 151414 event pairs, 3961 based on Foata normal form. 92/24656 useless extension candidates. Maximal degree in co-relation 47975. Up to 21382 conditions per place. [2024-11-22 21:21:41,842 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 34 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-11-22 21:21:41,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 227 flow [2024-11-22 21:21:41,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:21:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:21:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-11-22 21:21:41,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395189003436426 [2024-11-22 21:21:41,844 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 104 flow. Second operand 3 states and 157 transitions. [2024-11-22 21:21:41,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 227 flow [2024-11-22 21:21:41,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 227 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:21:41,846 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 137 flow [2024-11-22 21:21:41,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-11-22 21:21:41,846 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2024-11-22 21:21:41,847 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 137 flow [2024-11-22 21:21:41,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:41,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:41,847 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:41,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 21:21:41,847 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-22 21:21:41,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:41,848 INFO L85 PathProgramCache]: Analyzing trace with hash 862871265, now seen corresponding path program 1 times [2024-11-22 21:21:41,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:41,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459300862] [2024-11-22 21:21:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:41,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:41,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:41,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459300862] [2024-11-22 21:21:41,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459300862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:41,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:41,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:21:41,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021248329] [2024-11-22 21:21:41,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:41,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:21:41,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:21:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:21:41,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-11-22 21:21:41,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:41,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:41,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-11-22 21:21:41,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:42,267 INFO L124 PetriNetUnfolderBase]: 1187/2607 cut-off events. [2024-11-22 21:21:42,271 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-11-22 21:21:42,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5686 conditions, 2607 events. 1187/2607 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17893 event pairs, 260 based on Foata normal form. 2076/4645 useless extension candidates. Maximal degree in co-relation 5677. Up to 1627 conditions per place. [2024-11-22 21:21:42,288 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 25 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-11-22 21:21:42,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 239 flow [2024-11-22 21:21:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:21:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:21:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-22 21:21:42,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5257731958762887 [2024-11-22 21:21:42,290 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 137 flow. Second operand 3 states and 153 transitions. [2024-11-22 21:21:42,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 239 flow [2024-11-22 21:21:42,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:21:42,292 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 152 flow [2024-11-22 21:21:42,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-11-22 21:21:42,294 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2024-11-22 21:21:42,295 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 152 flow [2024-11-22 21:21:42,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:42,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:42,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:42,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 21:21:42,295 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-22 21:21:42,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:42,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1203977249, now seen corresponding path program 1 times [2024-11-22 21:21:42,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:42,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539990311] [2024-11-22 21:21:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:42,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:42,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:42,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539990311] [2024-11-22 21:21:42,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539990311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:42,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:42,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:21:42,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351185705] [2024-11-22 21:21:42,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:42,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:21:42,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:42,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:21:42,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:21:42,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-11-22 21:21:42,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:42,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:42,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-11-22 21:21:42,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:42,602 INFO L124 PetriNetUnfolderBase]: 1731/3694 cut-off events. [2024-11-22 21:21:42,603 INFO L125 PetriNetUnfolderBase]: For 1171/1171 co-relation queries the response was YES. [2024-11-22 21:21:42,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9331 conditions, 3694 events. 1731/3694 cut-off events. For 1171/1171 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 26957 event pairs, 86 based on Foata normal form. 30/3714 useless extension candidates. Maximal degree in co-relation 9322. Up to 2243 conditions per place. [2024-11-22 21:21:42,626 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 49 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-11-22 21:21:42,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 398 flow [2024-11-22 21:21:42,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:21:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:21:42,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2024-11-22 21:21:42,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5541237113402062 [2024-11-22 21:21:42,631 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 152 flow. Second operand 4 states and 215 transitions. [2024-11-22 21:21:42,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 398 flow [2024-11-22 21:21:42,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:21:42,636 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 194 flow [2024-11-22 21:21:42,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-11-22 21:21:42,637 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-22 21:21:42,637 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 194 flow [2024-11-22 21:21:42,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:42,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:42,638 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:42,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 21:21:42,638 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-22 21:21:42,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:42,639 INFO L85 PathProgramCache]: Analyzing trace with hash 360081993, now seen corresponding path program 1 times [2024-11-22 21:21:42,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:42,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065964575] [2024-11-22 21:21:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:42,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:21:42,649 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:21:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:21:42,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:21:42,658 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:21:42,658 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-22 21:21:42,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-22 21:21:42,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-22 21:21:42,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-11-22 21:21:42,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-22 21:21:42,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-11-22 21:21:42,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-22 21:21:42,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-22 21:21:42,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 21:21:42,660 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-22 21:21:42,660 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:21:42,660 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-22 21:21:42,698 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:21:42,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 119 transitions, 318 flow [2024-11-22 21:21:42,707 INFO L124 PetriNetUnfolderBase]: 8/82 cut-off events. [2024-11-22 21:21:42,707 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-22 21:21:42,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 82 events. 8/82 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 236 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 104. Up to 6 conditions per place. [2024-11-22 21:21:42,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 119 transitions, 318 flow [2024-11-22 21:21:42,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 58 transitions, 159 flow [2024-11-22 21:21:42,709 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:21:42,709 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;@24fcb5ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:21:42,710 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-22 21:21:42,711 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:21:42,711 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-22 21:21:42,711 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:21:42,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:42,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:21:42,711 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)] === [2024-11-22 21:21:42,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:42,712 INFO L85 PathProgramCache]: Analyzing trace with hash 536947283, now seen corresponding path program 1 times [2024-11-22 21:21:42,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:42,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041455566] [2024-11-22 21:21:42,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:42,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:42,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:42,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041455566] [2024-11-22 21:21:42,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041455566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:42,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:42,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:21:42,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229027994] [2024-11-22 21:21:42,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:42,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 21:21:42,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:42,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 21:21:42,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 21:21:42,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-22 21:21:42,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 159 flow. Second operand has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:42,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:42,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-22 21:21:42,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:50,203 INFO L124 PetriNetUnfolderBase]: 84655/108198 cut-off events. [2024-11-22 21:21:50,203 INFO L125 PetriNetUnfolderBase]: For 26992/26992 co-relation queries the response was YES. [2024-11-22 21:21:50,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216295 conditions, 108198 events. 84655/108198 cut-off events. For 26992/26992 co-relation queries the response was YES. Maximal size of possible extension queue 3774. Compared 644634 event pairs, 65538 based on Foata normal form. 12284/119458 useless extension candidates. Maximal degree in co-relation 216281. Up to 100352 conditions per place. [2024-11-22 21:21:50,923 INFO L140 encePairwiseOnDemand]: 110/119 looper letters, 28 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-11-22 21:21:50,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 191 flow [2024-11-22 21:21:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 21:21:50,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 21:21:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 133 transitions. [2024-11-22 21:21:50,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-11-22 21:21:50,924 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 159 flow. Second operand 2 states and 133 transitions. [2024-11-22 21:21:50,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 191 flow [2024-11-22 21:21:50,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 178 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-22 21:21:50,938 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 122 flow [2024-11-22 21:21:50,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, 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=122, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-11-22 21:21:50,938 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2024-11-22 21:21:50,938 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 122 flow [2024-11-22 21:21:50,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:50,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:50,939 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:50,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 21:21:50,939 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-22 21:21:50,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash -211440730, now seen corresponding path program 1 times [2024-11-22 21:21:50,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:50,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490837023] [2024-11-22 21:21:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:50,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:50,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:50,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490837023] [2024-11-22 21:21:50,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490837023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:50,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:50,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:21:50,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337527658] [2024-11-22 21:21:50,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:50,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:21:50,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:50,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:21:50,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:21:50,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-22 21:21:50,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:50,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:50,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-22 21:21:50,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:58,066 INFO L124 PetriNetUnfolderBase]: 87029/112963 cut-off events. [2024-11-22 21:21:58,067 INFO L125 PetriNetUnfolderBase]: For 5082/5082 co-relation queries the response was YES. [2024-11-22 21:21:58,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221185 conditions, 112963 events. 87029/112963 cut-off events. For 5082/5082 co-relation queries the response was YES. Maximal size of possible extension queue 4061. Compared 704775 event pairs, 21478 based on Foata normal form. 188/112989 useless extension candidates. Maximal degree in co-relation 221177. Up to 101893 conditions per place. [2024-11-22 21:21:58,796 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 40 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2024-11-22 21:21:58,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 270 flow [2024-11-22 21:21:58,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:21:58,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:21:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-11-22 21:21:58,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5350140056022409 [2024-11-22 21:21:58,798 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 122 flow. Second operand 3 states and 191 transitions. [2024-11-22 21:21:58,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 270 flow [2024-11-22 21:21:58,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:21:58,806 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 162 flow [2024-11-22 21:21:58,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-22 21:21:58,807 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2024-11-22 21:21:58,807 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 162 flow [2024-11-22 21:21:58,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:58,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:58,807 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:58,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 21:21:58,807 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-22 21:21:58,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:58,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2072609719, now seen corresponding path program 1 times [2024-11-22 21:21:58,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:58,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019018172] [2024-11-22 21:21:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:58,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:58,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:58,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019018172] [2024-11-22 21:21:58,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019018172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:58,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:58,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:21:58,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580325061] [2024-11-22 21:21:58,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:58,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:21:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:58,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:21:58,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:21:58,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-22 21:21:58,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:58,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:58,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-22 21:21:58,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:59,414 INFO L124 PetriNetUnfolderBase]: 2900/6135 cut-off events. [2024-11-22 21:21:59,415 INFO L125 PetriNetUnfolderBase]: For 1688/1688 co-relation queries the response was YES. [2024-11-22 21:21:59,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13499 conditions, 6135 events. 2900/6135 cut-off events. For 1688/1688 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 47720 event pairs, 648 based on Foata normal form. 6162/12226 useless extension candidates. Maximal degree in co-relation 13489. Up to 3945 conditions per place. [2024-11-22 21:21:59,447 INFO L140 encePairwiseOnDemand]: 107/119 looper letters, 29 selfloop transitions, 12 changer transitions 0/59 dead transitions. [2024-11-22 21:21:59,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 283 flow [2024-11-22 21:21:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:21:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:21:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2024-11-22 21:21:59,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2024-11-22 21:21:59,448 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 162 flow. Second operand 3 states and 186 transitions. [2024-11-22 21:21:59,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 283 flow [2024-11-22 21:21:59,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:21:59,451 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 180 flow [2024-11-22 21:21:59,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-11-22 21:21:59,452 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2024-11-22 21:21:59,452 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 180 flow [2024-11-22 21:21:59,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:59,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:59,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:59,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 21:21:59,453 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-22 21:21:59,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash -592232358, now seen corresponding path program 1 times [2024-11-22 21:21:59,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:59,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950352587] [2024-11-22 21:21:59,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:59,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:21:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:21:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:21:59,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:21:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950352587] [2024-11-22 21:21:59,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950352587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:21:59,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:21:59,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:21:59,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798975489] [2024-11-22 21:21:59,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:21:59,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:21:59,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:21:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:21:59,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:21:59,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-22 21:21:59,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:59,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:21:59,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-22 21:21:59,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:21:59,930 INFO L124 PetriNetUnfolderBase]: 4045/8235 cut-off events. [2024-11-22 21:21:59,930 INFO L125 PetriNetUnfolderBase]: For 2462/2462 co-relation queries the response was YES. [2024-11-22 21:21:59,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21131 conditions, 8235 events. 4045/8235 cut-off events. For 2462/2462 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 65502 event pairs, 162 based on Foata normal form. 45/8269 useless extension candidates. Maximal degree in co-relation 21121. Up to 5638 conditions per place. [2024-11-22 21:21:59,978 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 58 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-11-22 21:21:59,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 87 transitions, 478 flow [2024-11-22 21:21:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:21:59,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:21:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-11-22 21:21:59,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5504201680672269 [2024-11-22 21:21:59,980 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 180 flow. Second operand 4 states and 262 transitions. [2024-11-22 21:21:59,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 87 transitions, 478 flow [2024-11-22 21:21:59,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:21:59,989 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 232 flow [2024-11-22 21:21:59,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-11-22 21:21:59,989 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2024-11-22 21:21:59,990 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 232 flow [2024-11-22 21:21:59,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:21:59,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:21:59,990 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:21:59,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 21:21:59,990 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-22 21:21:59,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:21:59,991 INFO L85 PathProgramCache]: Analyzing trace with hash -257833893, now seen corresponding path program 1 times [2024-11-22 21:21:59,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:21:59,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962093746] [2024-11-22 21:21:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:21:59,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:22:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:22:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:22:00,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:22:00,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962093746] [2024-11-22 21:22:00,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962093746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:22:00,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964151022] [2024-11-22 21:22:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:22:00,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:22:00,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:22:00,082 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) [2024-11-22 21:22:00,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:22:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:22:00,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 21:22:00,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:22:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:22:00,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:22:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:22:00,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964151022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:22:00,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:22:00,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-22 21:22:00,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838589705] [2024-11-22 21:22:00,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:22:00,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:22:00,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:22:00,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:22:00,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:22:00,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-22 21:22:00,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 232 flow. Second operand has 11 states, 11 states have (on average 51.54545454545455) internal successors, (567), 11 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:22:00,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:22:00,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-22 21:22:00,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:22:02,093 INFO L124 PetriNetUnfolderBase]: 10055/20384 cut-off events. [2024-11-22 21:22:02,093 INFO L125 PetriNetUnfolderBase]: For 9525/9529 co-relation queries the response was YES. [2024-11-22 21:22:02,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50219 conditions, 20384 events. 10055/20384 cut-off events. For 9525/9529 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 186255 event pairs, 2115 based on Foata normal form. 171/20544 useless extension candidates. Maximal degree in co-relation 50207. Up to 6387 conditions per place. [2024-11-22 21:22:02,224 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 59 selfloop transitions, 26 changer transitions 0/103 dead transitions. [2024-11-22 21:22:02,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 604 flow [2024-11-22 21:22:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:22:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:22:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2024-11-22 21:22:02,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5310924369747899 [2024-11-22 21:22:02,226 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 232 flow. Second operand 5 states and 316 transitions. [2024-11-22 21:22:02,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 604 flow [2024-11-22 21:22:02,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 103 transitions, 582 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-22 21:22:02,235 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 339 flow [2024-11-22 21:22:02,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-11-22 21:22:02,235 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2024-11-22 21:22:02,236 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 339 flow [2024-11-22 21:22:02,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 51.54545454545455) internal successors, (567), 11 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:22:02,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:22:02,236 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:22:02,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:22:02,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 21:22:02,441 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-22 21:22:02,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:22:02,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1881147712, now seen corresponding path program 1 times [2024-11-22 21:22:02,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:22:02,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287762868] [2024-11-22 21:22:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:22:02,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:22:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:22:02,451 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:22:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:22:02,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:22:02,459 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:22:02,459 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-22 21:22:02,459 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2024-11-22 21:22:02,459 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 9 remaining) [2024-11-22 21:22:02,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 9 remaining) [2024-11-22 21:22:02,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2024-11-22 21:22:02,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2024-11-22 21:22:02,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2024-11-22 21:22:02,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2024-11-22 21:22:02,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-22 21:22:02,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 21:22:02,460 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-22 21:22:02,461 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:22:02,461 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-22 21:22:02,495 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 21:22:02,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 141 transitions, 390 flow [2024-11-22 21:22:02,503 INFO L124 PetriNetUnfolderBase]: 9/94 cut-off events. [2024-11-22 21:22:02,503 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-22 21:22:02,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 94 events. 9/94 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 264 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 123. Up to 7 conditions per place. [2024-11-22 21:22:02,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 141 transitions, 390 flow [2024-11-22 21:22:02,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 65 transitions, 187 flow [2024-11-22 21:22:02,505 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:22:02,506 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;@24fcb5ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:22:02,506 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-22 21:22:02,508 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:22:02,508 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-22 21:22:02,508 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:22:02,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:22:02,508 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:22:02,508 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)] === [2024-11-22 21:22:02,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:22:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash 672129899, now seen corresponding path program 1 times [2024-11-22 21:22:02,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:22:02,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066447154] [2024-11-22 21:22:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:22:02,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:22:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:22:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:22:02,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:22:02,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066447154] [2024-11-22 21:22:02,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066447154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:22:02,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:22:02,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:22:02,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247605513] [2024-11-22 21:22:02,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:22:02,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 21:22:02,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:22:02,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 21:22:02,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 21:22:02,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 141 [2024-11-22 21:22:02,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 187 flow. Second operand has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 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) [2024-11-22 21:22:02,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:22:02,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 141 [2024-11-22 21:22:02,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand