./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/14_spin2003-pthread.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 f42d37a05f48e892c5a546503245e38980b0f6e32be2f52b67eb1c08983f5b1e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:25:15,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:25:15,764 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:25:15,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:25:15,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:25:15,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:25:15,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:25:15,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:25:15,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:25:15,804 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:25:15,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:25:15,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:25:15,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:25:15,805 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:25:15,807 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:25:15,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:25:15,807 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:25:15,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:25:15,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:25:15,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:25:15,808 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:25:15,809 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:25:15,809 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:25:15,810 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:25:15,810 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:25:15,810 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:25:15,810 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:25:15,811 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:25:15,811 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:25:15,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:25:15,811 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:25:15,812 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:25:15,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:25:15,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:25:15,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:25:15,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:25:15,813 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:25:15,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:25:15,813 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:25:15,814 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:25:15,814 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:25:15,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:25:15,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42d37a05f48e892c5a546503245e38980b0f6e32be2f52b67eb1c08983f5b1e [2024-10-14 19:25:16,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:25:16,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:25:16,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:25:16,089 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:25:16,089 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:25:16,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i [2024-10-14 19:25:17,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:25:17,823 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:25:17,824 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/14_spin2003-pthread.i [2024-10-14 19:25:17,841 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa991bec/7618da86cd214c888b097edd4e11890d/FLAG9e677a54f [2024-10-14 19:25:17,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa991bec/7618da86cd214c888b097edd4e11890d [2024-10-14 19:25:17,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:25:17,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:25:17,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:25:17,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:25:17,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:25:17,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:25:17" (1/1) ... [2024-10-14 19:25:17,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36550e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:17, skipping insertion in model container [2024-10-14 19:25:17,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:25:17" (1/1) ... [2024-10-14 19:25:17,925 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:25:18,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:25:18,275 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:25:18,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:25:18,395 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:25:18,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18 WrapperNode [2024-10-14 19:25:18,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:25:18,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:25:18,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:25:18,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:25:18,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (1/1) ... [2024-10-14 19:25:18,416 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (1/1) ... [2024-10-14 19:25:18,434 INFO L138 Inliner]: procedures = 161, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2024-10-14 19:25:18,434 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:25:18,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:25:18,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:25:18,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:25:18,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (1/1) ... [2024-10-14 19:25:18,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (1/1) ... [2024-10-14 19:25:18,450 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (1/1) ... [2024-10-14 19:25:18,464 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]. [2024-10-14 19:25:18,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (1/1) ... [2024-10-14 19:25:18,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (1/1) ... [2024-10-14 19:25:18,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (1/1) ... [2024-10-14 19:25:18,474 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (1/1) ... [2024-10-14 19:25:18,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (1/1) ... [2024-10-14 19:25:18,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (1/1) ... [2024-10-14 19:25:18,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:25:18,485 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:25:18,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:25:18,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:25:18,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (1/1) ... [2024-10-14 19:25:18,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:25:18,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:25:18,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:25:18,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:25:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 19:25:18,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 19:25:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 19:25:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:25:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:25:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 19:25:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 19:25:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:25:18,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:25:18,566 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:25:18,667 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:25:18,669 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:25:18,754 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:25:18,754 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:25:18,849 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:25:18,851 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 19:25:18,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:25:18 BoogieIcfgContainer [2024-10-14 19:25:18,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:25:18,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:25:18,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:25:18,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:25:18,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:25:17" (1/3) ... [2024-10-14 19:25:18,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8fc64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:25:18, skipping insertion in model container [2024-10-14 19:25:18,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:25:18" (2/3) ... [2024-10-14 19:25:18,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8fc64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:25:18, skipping insertion in model container [2024-10-14 19:25:18,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:25:18" (3/3) ... [2024-10-14 19:25:18,864 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003-pthread.i [2024-10-14 19:25:18,883 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:25:18,884 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:25:18,884 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:25:18,921 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:25:18,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 19 transitions, 42 flow [2024-10-14 19:25:18,988 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-10-14 19:25:18,989 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:25:18,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 23 events. 2/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 35 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2024-10-14 19:25:18,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 19 transitions, 42 flow [2024-10-14 19:25:18,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 19 transitions, 42 flow [2024-10-14 19:25:19,006 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:25:19,014 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;@442ba2bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:25:19,014 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 19:25:19,018 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:25:19,019 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:25:19,019 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:25:19,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:19,020 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:25:19,020 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:25:19,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:19,025 INFO L85 PathProgramCache]: Analyzing trace with hash 148109, now seen corresponding path program 1 times [2024-10-14 19:25:19,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:19,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156799006] [2024-10-14 19:25:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:19,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:25:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:25:19,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:25:19,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156799006] [2024-10-14 19:25:19,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156799006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:25:19,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:25:19,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:25:19,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412918640] [2024-10-14 19:25:19,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:25:19,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:25:19,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:25:19,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:25:19,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:25:19,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 19 [2024-10-14 19:25:19,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 19 transitions, 42 flow. Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:19,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:25:19,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 19 [2024-10-14 19:25:19,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:25:19,298 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-10-14 19:25:19,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:25:19,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 28 events. 5/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 5 based on Foata normal form. 4/31 useless extension candidates. Maximal degree in co-relation 39. Up to 20 conditions per place. [2024-10-14 19:25:19,300 INFO L140 encePairwiseOnDemand]: 16/19 looper letters, 8 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2024-10-14 19:25:19,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 13 transitions, 46 flow [2024-10-14 19:25:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:25:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:25:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 23 transitions. [2024-10-14 19:25:19,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-10-14 19:25:19,311 INFO L175 Difference]: Start difference. First operand has 20 places, 19 transitions, 42 flow. Second operand 2 states and 23 transitions. [2024-10-14 19:25:19,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 13 transitions, 46 flow [2024-10-14 19:25:19,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 46 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:25:19,314 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 30 flow [2024-10-14 19:25:19,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2024-10-14 19:25:19,320 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2024-10-14 19:25:19,322 INFO L471 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 30 flow [2024-10-14 19:25:19,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:19,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:19,323 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:25:19,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:25:19,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:25:19,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:19,324 INFO L85 PathProgramCache]: Analyzing trace with hash 142329011, now seen corresponding path program 1 times [2024-10-14 19:25:19,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:19,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540752756] [2024-10-14 19:25:19,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:19,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:25:19,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:25:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:25:19,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:25:19,387 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:25:19,389 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-10-14 19:25:19,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-10-14 19:25:19,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-10-14 19:25:19,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-10-14 19:25:19,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:25:19,391 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 19:25:19,394 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:25:19,394 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 19:25:19,416 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:25:19,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 32 transitions, 74 flow [2024-10-14 19:25:19,428 INFO L124 PetriNetUnfolderBase]: 4/40 cut-off events. [2024-10-14 19:25:19,428 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:25:19,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 40 events. 4/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 105 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 28. Up to 3 conditions per place. [2024-10-14 19:25:19,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 32 transitions, 74 flow [2024-10-14 19:25:19,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 32 transitions, 74 flow [2024-10-14 19:25:19,433 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:25:19,434 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;@442ba2bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:25:19,434 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-14 19:25:19,437 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:25:19,437 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:25:19,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:25:19,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:19,437 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:25:19,437 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)] === [2024-10-14 19:25:19,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:19,438 INFO L85 PathProgramCache]: Analyzing trace with hash 179885, now seen corresponding path program 1 times [2024-10-14 19:25:19,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:19,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783042331] [2024-10-14 19:25:19,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:19,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:25:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:25:19,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:25:19,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783042331] [2024-10-14 19:25:19,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783042331] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:25:19,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:25:19,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:25:19,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109867530] [2024-10-14 19:25:19,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:25:19,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:25:19,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:25:19,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:25:19,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:25:19,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-10-14 19:25:19,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:19,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:25:19,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-10-14 19:25:19,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:25:19,590 INFO L124 PetriNetUnfolderBase]: 95/236 cut-off events. [2024-10-14 19:25:19,590 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-14 19:25:19,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 236 events. 95/236 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1109 event pairs, 95 based on Foata normal form. 48/281 useless extension candidates. Maximal degree in co-relation 293. Up to 182 conditions per place. [2024-10-14 19:25:19,593 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 14 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2024-10-14 19:25:19,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 23 transitions, 84 flow [2024-10-14 19:25:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:25:19,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:25:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2024-10-14 19:25:19,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-14 19:25:19,595 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 74 flow. Second operand 2 states and 39 transitions. [2024-10-14 19:25:19,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 23 transitions, 84 flow [2024-10-14 19:25:19,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:25:19,598 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 56 flow [2024-10-14 19:25:19,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-10-14 19:25:19,599 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2024-10-14 19:25:19,599 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 56 flow [2024-10-14 19:25:19,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:19,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:19,599 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2024-10-14 19:25:19,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:25:19,600 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)] === [2024-10-14 19:25:19,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:19,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1367656921, now seen corresponding path program 1 times [2024-10-14 19:25:19,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:19,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720126318] [2024-10-14 19:25:19,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:19,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:25:19,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:25:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:25:19,659 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:25:19,663 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:25:19,664 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-14 19:25:19,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-10-14 19:25:19,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-10-14 19:25:19,665 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-10-14 19:25:19,665 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-10-14 19:25:19,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 19:25:19,666 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 19:25:19,666 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:25:19,666 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 19:25:19,689 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:25:19,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 45 transitions, 108 flow [2024-10-14 19:25:19,699 INFO L124 PetriNetUnfolderBase]: 6/57 cut-off events. [2024-10-14 19:25:19,699 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 19:25:19,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 6/57 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 185 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2024-10-14 19:25:19,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 45 transitions, 108 flow [2024-10-14 19:25:19,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 45 transitions, 108 flow [2024-10-14 19:25:19,702 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:25:19,703 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;@442ba2bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:25:19,704 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-14 19:25:19,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:25:19,706 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:25:19,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:25:19,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:19,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:25:19,707 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)] === [2024-10-14 19:25:19,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash 224570, now seen corresponding path program 1 times [2024-10-14 19:25:19,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:19,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82064018] [2024-10-14 19:25:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:19,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:25:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:25:19,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:25:19,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82064018] [2024-10-14 19:25:19,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82064018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:25:19,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:25:19,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:25:19,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364820318] [2024-10-14 19:25:19,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:25:19,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:25:19,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:25:19,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:25:19,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:25:19,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2024-10-14 19:25:19,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:19,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:25:19,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2024-10-14 19:25:19,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:25:19,987 INFO L124 PetriNetUnfolderBase]: 995/1844 cut-off events. [2024-10-14 19:25:19,988 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2024-10-14 19:25:19,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 1844 events. 995/1844 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11489 event pairs, 995 based on Foata normal form. 450/2279 useless extension candidates. Maximal degree in co-relation 834. Up to 1514 conditions per place. [2024-10-14 19:25:20,039 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 20 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2024-10-14 19:25:20,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 124 flow [2024-10-14 19:25:20,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:25:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:25:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 55 transitions. [2024-10-14 19:25:20,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-10-14 19:25:20,042 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 108 flow. Second operand 2 states and 55 transitions. [2024-10-14 19:25:20,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 124 flow [2024-10-14 19:25:20,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 33 transitions, 122 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 19:25:20,046 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 82 flow [2024-10-14 19:25:20,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-10-14 19:25:20,047 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2024-10-14 19:25:20,047 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 82 flow [2024-10-14 19:25:20,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:20,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:20,048 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2024-10-14 19:25:20,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 19:25:20,048 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-14 19:25:20,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:20,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1718132481, now seen corresponding path program 1 times [2024-10-14 19:25:20,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:20,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166444145] [2024-10-14 19:25:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:20,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:25:20,080 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:25:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:25:20,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:25:20,099 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:25:20,100 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-10-14 19:25:20,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-14 19:25:20,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-14 19:25:20,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-10-14 19:25:20,100 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-10-14 19:25:20,101 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-10-14 19:25:20,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 19:25:20,101 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 19:25:20,102 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:25:20,102 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 19:25:20,121 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:25:20,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 58 transitions, 144 flow [2024-10-14 19:25:20,131 INFO L124 PetriNetUnfolderBase]: 8/74 cut-off events. [2024-10-14 19:25:20,132 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 19:25:20,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 74 events. 8/74 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 249 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 68. Up to 5 conditions per place. [2024-10-14 19:25:20,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 58 transitions, 144 flow [2024-10-14 19:25:20,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 58 transitions, 144 flow [2024-10-14 19:25:20,138 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:25:20,139 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;@442ba2bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:25:20,142 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-14 19:25:20,144 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:25:20,144 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:25:20,144 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:25:20,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:20,144 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:25:20,144 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)] === [2024-10-14 19:25:20,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:20,145 INFO L85 PathProgramCache]: Analyzing trace with hash 282164, now seen corresponding path program 1 times [2024-10-14 19:25:20,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:20,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815228237] [2024-10-14 19:25:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:20,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:25:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:25:20,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:25:20,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815228237] [2024-10-14 19:25:20,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815228237] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:25:20,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:25:20,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:25:20,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168616756] [2024-10-14 19:25:20,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:25:20,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:25:20,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:25:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:25:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:25:20,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-10-14 19:25:20,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 144 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:20,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:25:20,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-10-14 19:25:20,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:25:21,377 INFO L124 PetriNetUnfolderBase]: 8555/13620 cut-off events. [2024-10-14 19:25:21,378 INFO L125 PetriNetUnfolderBase]: For 2794/2794 co-relation queries the response was YES. [2024-10-14 19:25:21,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26535 conditions, 13620 events. 8555/13620 cut-off events. For 2794/2794 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 97394 event pairs, 8555 based on Foata normal form. 3722/17259 useless extension candidates. Maximal degree in co-relation 3562. Up to 11666 conditions per place. [2024-10-14 19:25:21,568 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 26 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2024-10-14 19:25:21,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 166 flow [2024-10-14 19:25:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:25:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:25:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 71 transitions. [2024-10-14 19:25:21,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6120689655172413 [2024-10-14 19:25:21,570 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 144 flow. Second operand 2 states and 71 transitions. [2024-10-14 19:25:21,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 166 flow [2024-10-14 19:25:21,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 43 transitions, 160 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-14 19:25:21,577 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 108 flow [2024-10-14 19:25:21,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=108, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-10-14 19:25:21,579 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -6 predicate places. [2024-10-14 19:25:21,580 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 108 flow [2024-10-14 19:25:21,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:21,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:21,580 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:25:21,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 19:25:21,581 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 19:25:21,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1881461514, now seen corresponding path program 1 times [2024-10-14 19:25:21,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:21,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926337839] [2024-10-14 19:25:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:21,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:25:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:25:21,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:25:21,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926337839] [2024-10-14 19:25:21,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926337839] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:25:21,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:25:21,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:25:21,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243220830] [2024-10-14 19:25:21,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:25:21,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:25:21,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:25:21,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:25:21,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:25:21,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-10-14 19:25:21,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:21,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:25:21,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-10-14 19:25:21,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:25:22,204 INFO L124 PetriNetUnfolderBase]: 4064/6083 cut-off events. [2024-10-14 19:25:22,204 INFO L125 PetriNetUnfolderBase]: For 805/805 co-relation queries the response was YES. [2024-10-14 19:25:22,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12183 conditions, 6083 events. 4064/6083 cut-off events. For 805/805 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 35416 event pairs, 4064 based on Foata normal form. 1172/7194 useless extension candidates. Maximal degree in co-relation 12176. Up to 5626 conditions per place. [2024-10-14 19:25:22,235 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 21 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2024-10-14 19:25:22,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 31 transitions, 128 flow [2024-10-14 19:25:22,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:25:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:25:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-14 19:25:22,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2024-10-14 19:25:22,240 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 108 flow. Second operand 3 states and 80 transitions. [2024-10-14 19:25:22,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 31 transitions, 128 flow [2024-10-14 19:25:22,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:25:22,243 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 86 flow [2024-10-14 19:25:22,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-10-14 19:25:22,245 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -16 predicate places. [2024-10-14 19:25:22,245 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 86 flow [2024-10-14 19:25:22,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:22,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:22,246 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2024-10-14 19:25:22,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 19:25:22,246 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)] === [2024-10-14 19:25:22,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:22,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1959711009, now seen corresponding path program 1 times [2024-10-14 19:25:22,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:22,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125331836] [2024-10-14 19:25:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:22,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:25:22,267 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:25:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:25:22,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:25:22,286 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:25:22,286 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-14 19:25:22,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-10-14 19:25:22,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-10-14 19:25:22,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-10-14 19:25:22,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-10-14 19:25:22,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-10-14 19:25:22,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-10-14 19:25:22,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 19:25:22,287 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-14 19:25:22,287 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:25:22,287 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-14 19:25:22,315 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:25:22,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 71 transitions, 182 flow [2024-10-14 19:25:22,324 INFO L124 PetriNetUnfolderBase]: 10/91 cut-off events. [2024-10-14 19:25:22,325 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-14 19:25:22,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 91 events. 10/91 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 328 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2024-10-14 19:25:22,329 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 71 transitions, 182 flow [2024-10-14 19:25:22,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 71 transitions, 182 flow [2024-10-14 19:25:22,330 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:25:22,331 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;@442ba2bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:25:22,331 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-14 19:25:22,332 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:25:22,332 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:25:22,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:25:22,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:22,332 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:25:22,334 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)] === [2024-10-14 19:25:22,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash 352667, now seen corresponding path program 1 times [2024-10-14 19:25:22,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:22,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813081629] [2024-10-14 19:25:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:22,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:25:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:25:22,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:25:22,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813081629] [2024-10-14 19:25:22,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813081629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:25:22,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:25:22,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:25:22,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125154976] [2024-10-14 19:25:22,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:25:22,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:25:22,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:25:22,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:25:22,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:25:22,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 71 [2024-10-14 19:25:22,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 182 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) [2024-10-14 19:25:22,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:25:22,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 71 [2024-10-14 19:25:22,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:25:29,089 INFO L124 PetriNetUnfolderBase]: 66875/97252 cut-off events. [2024-10-14 19:25:29,089 INFO L125 PetriNetUnfolderBase]: For 26154/26154 co-relation queries the response was YES. [2024-10-14 19:25:29,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191816 conditions, 97252 events. 66875/97252 cut-off events. For 26154/26154 co-relation queries the response was YES. Maximal size of possible extension queue 3825. Compared 755497 event pairs, 66875 based on Foata normal form. 28538/125299 useless extension candidates. Maximal degree in co-relation 26786. Up to 85538 conditions per place. [2024-10-14 19:25:29,804 INFO L140 encePairwiseOnDemand]: 60/71 looper letters, 32 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2024-10-14 19:25:29,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 210 flow [2024-10-14 19:25:29,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:25:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:25:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 87 transitions. [2024-10-14 19:25:29,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6126760563380281 [2024-10-14 19:25:29,807 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 182 flow. Second operand 2 states and 87 transitions. [2024-10-14 19:25:29,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 210 flow [2024-10-14 19:25:29,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 53 transitions, 198 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-14 19:25:29,822 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 134 flow [2024-10-14 19:25:29,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=134, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-10-14 19:25:29,823 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2024-10-14 19:25:29,824 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 134 flow [2024-10-14 19:25:29,824 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) [2024-10-14 19:25:29,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:29,825 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:25:29,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 19:25:29,825 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:25:29,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:29,825 INFO L85 PathProgramCache]: Analyzing trace with hash 217558089, now seen corresponding path program 1 times [2024-10-14 19:25:29,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:29,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060442774] [2024-10-14 19:25:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:29,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:25:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:25:29,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:25:29,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060442774] [2024-10-14 19:25:29,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060442774] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:25:29,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:25:29,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:25:29,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468111891] [2024-10-14 19:25:29,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:25:29,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:25:29,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:25:29,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:25:29,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:25:29,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 71 [2024-10-14 19:25:29,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:29,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:25:29,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 71 [2024-10-14 19:25:29,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:25:32,221 INFO L124 PetriNetUnfolderBase]: 26564/36649 cut-off events. [2024-10-14 19:25:32,221 INFO L125 PetriNetUnfolderBase]: For 5368/5368 co-relation queries the response was YES. [2024-10-14 19:25:32,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73375 conditions, 36649 events. 26564/36649 cut-off events. For 5368/5368 co-relation queries the response was YES. Maximal size of possible extension queue 1322. Compared 229877 event pairs, 26564 based on Foata normal form. 7422/43770 useless extension candidates. Maximal degree in co-relation 73367. Up to 34376 conditions per place. [2024-10-14 19:25:32,409 INFO L140 encePairwiseOnDemand]: 65/71 looper letters, 26 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2024-10-14 19:25:32,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 38 transitions, 158 flow [2024-10-14 19:25:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:25:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:25:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-10-14 19:25:32,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.460093896713615 [2024-10-14 19:25:32,411 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 134 flow. Second operand 3 states and 98 transitions. [2024-10-14 19:25:32,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 38 transitions, 158 flow [2024-10-14 19:25:32,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:25:32,421 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 106 flow [2024-10-14 19:25:32,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2024-10-14 19:25:32,423 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -20 predicate places. [2024-10-14 19:25:32,423 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 106 flow [2024-10-14 19:25:32,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:32,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:32,423 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:25:32,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 19:25:32,425 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:25:32,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:32,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1369644647, now seen corresponding path program 1 times [2024-10-14 19:25:32,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:32,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174959840] [2024-10-14 19:25:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:32,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:25:32,445 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:25:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:25:32,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:25:32,461 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:25:32,461 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-10-14 19:25:32,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-10-14 19:25:32,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-10-14 19:25:32,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-10-14 19:25:32,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-10-14 19:25:32,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-10-14 19:25:32,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-10-14 19:25:32,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-10-14 19:25:32,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 19:25:32,463 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-14 19:25:32,464 WARN L239 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:25:32,464 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-10-14 19:25:32,490 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:25:32,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 222 flow [2024-10-14 19:25:32,500 INFO L124 PetriNetUnfolderBase]: 12/108 cut-off events. [2024-10-14 19:25:32,500 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-14 19:25:32,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 108 events. 12/108 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 389 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 115. Up to 7 conditions per place. [2024-10-14 19:25:32,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 84 transitions, 222 flow [2024-10-14 19:25:32,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 84 transitions, 222 flow [2024-10-14 19:25:32,503 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:25:32,503 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;@442ba2bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:25:32,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-14 19:25:32,504 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:25:32,504 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:25:32,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:25:32,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:25:32,504 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:25:32,504 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)] === [2024-10-14 19:25:32,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:25:32,505 INFO L85 PathProgramCache]: Analyzing trace with hash 436079, now seen corresponding path program 1 times [2024-10-14 19:25:32,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:25:32,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853282454] [2024-10-14 19:25:32,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:25:32,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:25:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:25:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:25:32,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:25:32,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853282454] [2024-10-14 19:25:32,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853282454] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:25:32,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:25:32,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:25:32,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654780806] [2024-10-14 19:25:32,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:25:32,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:25:32,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:25:32,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:25:32,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:25:32,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 84 [2024-10-14 19:25:32,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 222 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:25:32,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:25:32,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 84 [2024-10-14 19:25:32,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand