./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/40_barrier_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/40_barrier_vf.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 e83225601d835c9b02ede9a5751213533e33817a9795ca1ab6ec7c2abd672056 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:01:42,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:01:42,114 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:01:42,119 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:01:42,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:01:42,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:01:42,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:01:42,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:01:42,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:01:42,145 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:01:42,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:01:42,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:01:42,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:01:42,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:01:42,148 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:01:42,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:01:42,148 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:01:42,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:01:42,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:01:42,149 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:01:42,149 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:01:42,152 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:01:42,152 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:01:42,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:01:42,153 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:01:42,153 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:01:42,153 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:01:42,153 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:01:42,153 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:01:42,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:01:42,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:01:42,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:01:42,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:01:42,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:01:42,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:01:42,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:01:42,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:01:42,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:01:42,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:01:42,155 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:01:42,155 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:01:42,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:01:42,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e83225601d835c9b02ede9a5751213533e33817a9795ca1ab6ec7c2abd672056 [2024-11-12 16:01:42,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:01:42,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:01:42,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:01:42,363 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:01:42,363 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:01:42,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2024-11-12 16:01:43,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:01:43,799 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:01:43,800 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2024-11-12 16:01:43,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/037cfdabf/0cb8497ae2dc4401865893e12aa64af1/FLAG1e1bd5875 [2024-11-12 16:01:43,830 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/037cfdabf/0cb8497ae2dc4401865893e12aa64af1 [2024-11-12 16:01:43,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:01:43,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:01:43,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:01:43,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:01:43,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:01:43,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:01:43" (1/1) ... [2024-11-12 16:01:43,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf1f925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:43, skipping insertion in model container [2024-11-12 16:01:43,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:01:43" (1/1) ... [2024-11-12 16:01:43,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:01:44,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:01:44,167 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:01:44,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:01:44,236 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:01:44,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44 WrapperNode [2024-11-12 16:01:44,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:01:44,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:01:44,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:01:44,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:01:44,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (1/1) ... [2024-11-12 16:01:44,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (1/1) ... [2024-11-12 16:01:44,272 INFO L138 Inliner]: procedures = 164, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 174 [2024-11-12 16:01:44,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:01:44,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:01:44,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:01:44,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:01:44,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (1/1) ... [2024-11-12 16:01:44,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (1/1) ... [2024-11-12 16:01:44,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (1/1) ... [2024-11-12 16:01:44,319 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-12 16:01:44,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (1/1) ... [2024-11-12 16:01:44,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (1/1) ... [2024-11-12 16:01:44,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (1/1) ... [2024-11-12 16:01:44,338 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (1/1) ... [2024-11-12 16:01:44,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (1/1) ... [2024-11-12 16:01:44,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (1/1) ... [2024-11-12 16:01:44,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:01:44,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:01:44,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:01:44,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:01:44,360 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (1/1) ... [2024-11-12 16:01:44,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:01:44,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:01:44,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 16:01:44,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 16:01:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-12 16:01:44,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-12 16:01:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 16:01:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:01:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:01:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 16:01:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 16:01:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:01:44,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:01:44,445 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:01:44,565 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:01:44,567 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:01:44,741 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:01:44,742 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:01:45,354 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:01:45,355 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 16:01:45,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:01:45 BoogieIcfgContainer [2024-11-12 16:01:45,355 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:01:45,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:01:45,357 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:01:45,360 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:01:45,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:01:43" (1/3) ... [2024-11-12 16:01:45,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327f6576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:01:45, skipping insertion in model container [2024-11-12 16:01:45,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:01:44" (2/3) ... [2024-11-12 16:01:45,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327f6576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:01:45, skipping insertion in model container [2024-11-12 16:01:45,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:01:45" (3/3) ... [2024-11-12 16:01:45,362 INFO L112 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf.i [2024-11-12 16:01:45,377 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:01:45,377 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 16:01:45,377 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:01:45,409 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 16:01:45,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 27 transitions, 58 flow [2024-11-12 16:01:45,488 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-11-12 16:01:45,488 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:45,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 31 events. 4/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-12 16:01:45,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 27 transitions, 58 flow [2024-11-12 16:01:45,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 27 transitions, 58 flow [2024-11-12 16:01:45,505 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:01:45,513 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;@2e24b46e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:01:45,514 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 16:01:45,536 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:01:45,536 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-12 16:01:45,537 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:45,537 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:45,537 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:01:45,538 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)] === [2024-11-12 16:01:45,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:45,543 INFO L85 PathProgramCache]: Analyzing trace with hash 430613, now seen corresponding path program 1 times [2024-11-12 16:01:45,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:45,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731756231] [2024-11-12 16:01:45,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:45,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:45,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:45,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731756231] [2024-11-12 16:01:45,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731756231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:45,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:45,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:01:45,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790572605] [2024-11-12 16:01:45,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:45,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 16:01:45,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:45,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 16:01:45,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 16:01:45,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-12 16:01:45,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 27 transitions, 58 flow. Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:45,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:45,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-12 16:01:45,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:01:46,006 INFO L124 PetriNetUnfolderBase]: 20/63 cut-off events. [2024-11-12 16:01:46,006 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:46,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 63 events. 20/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 14 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 101. Up to 47 conditions per place. [2024-11-12 16:01:46,009 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 13 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2024-11-12 16:01:46,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 68 flow [2024-11-12 16:01:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 16:01:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 16:01:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 31 transitions. [2024-11-12 16:01:46,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-12 16:01:46,020 INFO L175 Difference]: Start difference. First operand has 26 places, 27 transitions, 58 flow. Second operand 2 states and 31 transitions. [2024-11-12 16:01:46,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 68 flow [2024-11-12 16:01:46,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:01:46,024 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2024-11-12 16:01:46,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2024-11-12 16:01:46,030 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, -5 predicate places. [2024-11-12 16:01:46,030 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2024-11-12 16:01:46,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:46,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:46,031 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 16:01:46,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:01:46,031 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)] === [2024-11-12 16:01:46,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:46,032 INFO L85 PathProgramCache]: Analyzing trace with hash -55989055, now seen corresponding path program 1 times [2024-11-12 16:01:46,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:46,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940734945] [2024-11-12 16:01:46,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:46,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:01:46,162 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 16:01:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:01:46,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 16:01:46,219 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 16:01:46,220 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-12 16:01:46,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-12 16:01:46,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-12 16:01:46,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-12 16:01:46,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:01:46,223 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 16:01:46,225 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 16:01:46,226 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 16:01:46,246 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 16:01:46,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 47 transitions, 104 flow [2024-11-12 16:01:46,263 INFO L124 PetriNetUnfolderBase]: 8/56 cut-off events. [2024-11-12 16:01:46,263 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:01:46,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 56 events. 8/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 134 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2024-11-12 16:01:46,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 47 transitions, 104 flow [2024-11-12 16:01:46,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 47 transitions, 104 flow [2024-11-12 16:01:46,266 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:01:46,266 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;@2e24b46e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:01:46,266 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-12 16:01:46,271 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:01:46,271 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-12 16:01:46,271 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:46,271 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:46,272 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:01:46,272 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 16:01:46,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:46,273 INFO L85 PathProgramCache]: Analyzing trace with hash 477284, now seen corresponding path program 1 times [2024-11-12 16:01:46,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:46,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385309834] [2024-11-12 16:01:46,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:46,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:46,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:46,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385309834] [2024-11-12 16:01:46,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385309834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:46,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:46,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:01:46,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565074841] [2024-11-12 16:01:46,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:46,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 16:01:46,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:46,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 16:01:46,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 16:01:46,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-11-12 16:01:46,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 104 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:46,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:46,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-11-12 16:01:46,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:01:46,562 INFO L124 PetriNetUnfolderBase]: 471/929 cut-off events. [2024-11-12 16:01:46,563 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-12 16:01:46,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 929 events. 471/929 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4663 event pairs, 330 based on Foata normal form. 159/1070 useless extension candidates. Maximal degree in co-relation 1221. Up to 717 conditions per place. [2024-11-12 16:01:46,569 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 23 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-12 16:01:46,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 124 flow [2024-11-12 16:01:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 16:01:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 16:01:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-12 16:01:46,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-11-12 16:01:46,571 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 104 flow. Second operand 2 states and 54 transitions. [2024-11-12 16:01:46,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 124 flow [2024-11-12 16:01:46,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:01:46,572 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 78 flow [2024-11-12 16:01:46,572 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2024-11-12 16:01:46,573 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2024-11-12 16:01:46,573 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 78 flow [2024-11-12 16:01:46,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:46,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:46,574 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-12 16:01:46,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 16:01:46,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-12 16:01:46,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:46,575 INFO L85 PathProgramCache]: Analyzing trace with hash -428782727, now seen corresponding path program 1 times [2024-11-12 16:01:46,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:46,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339296498] [2024-11-12 16:01:46,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:46,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:01:46,711 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 16:01:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:01:46,735 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 16:01:46,739 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 16:01:46,739 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-12 16:01:46,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-12 16:01:46,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-12 16:01:46,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-12 16:01:46,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-12 16:01:46,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 16:01:46,740 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 16:01:46,741 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 16:01:46,741 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-12 16:01:46,763 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 16:01:46,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 67 transitions, 152 flow [2024-11-12 16:01:46,776 INFO L124 PetriNetUnfolderBase]: 12/81 cut-off events. [2024-11-12 16:01:46,776 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 16:01:46,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 12/81 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2024-11-12 16:01:46,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 67 transitions, 152 flow [2024-11-12 16:01:46,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 67 transitions, 152 flow [2024-11-12 16:01:46,779 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:01:46,780 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;@2e24b46e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:01:46,780 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-12 16:01:46,783 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:01:46,784 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-12 16:01:46,784 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:46,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:46,784 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:01:46,784 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:01:46,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:46,785 INFO L85 PathProgramCache]: Analyzing trace with hash 543815, now seen corresponding path program 1 times [2024-11-12 16:01:46,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:46,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532073353] [2024-11-12 16:01:46,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:46,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:46,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:46,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532073353] [2024-11-12 16:01:46,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532073353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:46,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:46,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:01:46,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733050787] [2024-11-12 16:01:46,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:46,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 16:01:46,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:46,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 16:01:46,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 16:01:46,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 67 [2024-11-12 16:01:46,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 152 flow. Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:46,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:46,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 67 [2024-11-12 16:01:46,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:01:47,595 INFO L124 PetriNetUnfolderBase]: 6962/11245 cut-off events. [2024-11-12 16:01:47,596 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-11-12 16:01:47,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20752 conditions, 11245 events. 6962/11245 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 73207 event pairs, 4937 based on Foata normal form. 2112/13177 useless extension candidates. Maximal degree in co-relation 3523. Up to 9185 conditions per place. [2024-11-12 16:01:47,720 INFO L140 encePairwiseOnDemand]: 57/67 looper letters, 33 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2024-11-12 16:01:47,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 182 flow [2024-11-12 16:01:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 16:01:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 16:01:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 77 transitions. [2024-11-12 16:01:47,722 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5746268656716418 [2024-11-12 16:01:47,722 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 152 flow. Second operand 2 states and 77 transitions. [2024-11-12 16:01:47,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 182 flow [2024-11-12 16:01:47,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 180 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-12 16:01:47,726 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 114 flow [2024-11-12 16:01:47,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-11-12 16:01:47,727 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2024-11-12 16:01:47,728 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 114 flow [2024-11-12 16:01:47,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:47,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:47,728 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-12 16:01:47,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 16:01:47,728 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)] === [2024-11-12 16:01:47,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:47,729 INFO L85 PathProgramCache]: Analyzing trace with hash 531088224, now seen corresponding path program 1 times [2024-11-12 16:01:47,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:47,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139298210] [2024-11-12 16:01:47,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:47,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:01:47,881 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 16:01:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:01:47,903 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 16:01:47,904 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 16:01:47,905 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-12 16:01:47,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-12 16:01:47,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-12 16:01:47,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-12 16:01:47,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-12 16:01:47,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-12 16:01:47,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 16:01:47,907 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 16:01:47,907 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 16:01:47,907 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-12 16:01:47,942 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 16:01:47,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 87 transitions, 202 flow [2024-11-12 16:01:47,959 INFO L124 PetriNetUnfolderBase]: 16/106 cut-off events. [2024-11-12 16:01:47,960 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-12 16:01:47,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 106 events. 16/106 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 318 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 93. Up to 5 conditions per place. [2024-11-12 16:01:47,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 87 transitions, 202 flow [2024-11-12 16:01:47,963 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 87 transitions, 202 flow [2024-11-12 16:01:47,964 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:01:47,964 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;@2e24b46e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:01:47,964 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-12 16:01:47,970 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:01:47,970 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-12 16:01:47,970 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:01:47,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:47,971 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:01:47,971 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-12 16:01:47,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:47,971 INFO L85 PathProgramCache]: Analyzing trace with hash 630206, now seen corresponding path program 1 times [2024-11-12 16:01:47,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:47,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111308300] [2024-11-12 16:01:47,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:47,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:48,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111308300] [2024-11-12 16:01:48,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111308300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:48,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:48,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:01:48,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067465080] [2024-11-12 16:01:48,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:48,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 16:01:48,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:48,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 16:01:48,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 16:01:48,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-12 16:01:48,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 87 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:48,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:48,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-12 16:01:48,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:01:55,138 INFO L124 PetriNetUnfolderBase]: 87130/125844 cut-off events. [2024-11-12 16:01:55,138 INFO L125 PetriNetUnfolderBase]: For 8089/8089 co-relation queries the response was YES. [2024-11-12 16:01:55,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236608 conditions, 125844 events. 87130/125844 cut-off events. For 8089/8089 co-relation queries the response was YES. Maximal size of possible extension queue 3978. Compared 931509 event pairs, 62218 based on Foata normal form. 25604/149815 useless extension candidates. Maximal degree in co-relation 20829. Up to 107146 conditions per place. [2024-11-12 16:01:55,853 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 43 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-11-12 16:01:55,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 242 flow [2024-11-12 16:01:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 16:01:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 16:01:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 100 transitions. [2024-11-12 16:01:55,855 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-11-12 16:01:55,855 INFO L175 Difference]: Start difference. First operand has 80 places, 87 transitions, 202 flow. Second operand 2 states and 100 transitions. [2024-11-12 16:01:55,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 242 flow [2024-11-12 16:01:55,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 236 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-12 16:01:55,861 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 150 flow [2024-11-12 16:01:55,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-11-12 16:01:55,862 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -14 predicate places. [2024-11-12 16:01:55,862 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 150 flow [2024-11-12 16:01:55,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:55,863 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:01:55,863 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:01:55,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 16:01:55,863 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-12 16:01:55,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:01:55,864 INFO L85 PathProgramCache]: Analyzing trace with hash 818469655, now seen corresponding path program 1 times [2024-11-12 16:01:55,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:01:55,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913390652] [2024-11-12 16:01:55,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:01:55,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:01:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:01:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:01:56,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:01:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913390652] [2024-11-12 16:01:56,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913390652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:01:56,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:01:56,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 16:01:56,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585649064] [2024-11-12 16:01:56,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:01:56,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:01:56,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:01:56,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:01:56,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:01:56,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-12 16:01:56,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:01:56,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:01:56,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-12 16:01:56,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:02:10,917 INFO L124 PetriNetUnfolderBase]: 184809/277386 cut-off events. [2024-11-12 16:02:10,917 INFO L125 PetriNetUnfolderBase]: For 4843/4843 co-relation queries the response was YES. [2024-11-12 16:02:11,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511691 conditions, 277386 events. 184809/277386 cut-off events. For 4843/4843 co-relation queries the response was YES. Maximal size of possible extension queue 12031. Compared 2515132 event pairs, 49795 based on Foata normal form. 12267/288102 useless extension candidates. Maximal degree in co-relation 511684. Up to 83388 conditions per place. [2024-11-12 16:02:12,836 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 103 selfloop transitions, 13 changer transitions 0/137 dead transitions. [2024-11-12 16:02:12,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 137 transitions, 553 flow [2024-11-12 16:02:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:02:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:02:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-11-12 16:02:12,841 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2024-11-12 16:02:12,842 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 150 flow. Second operand 4 states and 212 transitions. [2024-11-12 16:02:12,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 137 transitions, 553 flow [2024-11-12 16:02:12,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 137 transitions, 553 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:02:12,853 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 200 flow [2024-11-12 16:02:12,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2024-11-12 16:02:12,855 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -11 predicate places. [2024-11-12 16:02:12,855 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 200 flow [2024-11-12 16:02:12,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:02:12,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:02:12,856 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:02:12,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 16:02:12,856 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-12 16:02:12,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:02:12,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1315315997, now seen corresponding path program 1 times [2024-11-12 16:02:12,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:02:12,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513254081] [2024-11-12 16:02:12,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:02:12,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:02:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:02:13,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:02:13,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:02:13,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513254081] [2024-11-12 16:02:13,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513254081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:02:13,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:02:13,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:02:13,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139221905] [2024-11-12 16:02:13,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:02:13,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:02:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:02:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:02:13,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:02:13,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-12 16:02:13,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:02:13,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:02:13,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-12 16:02:13,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand