/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/pthread-ext/01b_inc.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:15:56,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:15:56,364 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 19:15:56,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:15:56,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:15:56,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:15:56,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:15:56,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:15:56,391 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:15:56,391 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:15:56,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:15:56,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:15:56,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:15:56,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:15:56,392 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:15:56,393 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:15:56,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:15:56,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:15:56,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:15:56,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:15:56,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:15:56,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:15:56,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:15:56,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:15:56,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:15:56,393 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:15:56,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:15:56,394 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:15:56,394 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:15:56,394 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:15:56,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:15:56,394 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:15:56,394 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:15:56,394 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:15:56,394 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 19:15:56,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:15:56,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:15:56,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:15:56,630 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:15:56,631 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:15:56,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc.i [2025-04-13 19:15:57,950 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3926b14db/686757be4e4040f19644a43c8e766bb1/FLAG48812efa0 [2025-04-13 19:15:58,201 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:15:58,202 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i [2025-04-13 19:15:58,219 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3926b14db/686757be4e4040f19644a43c8e766bb1/FLAG48812efa0 [2025-04-13 19:15:59,001 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3926b14db/686757be4e4040f19644a43c8e766bb1 [2025-04-13 19:15:59,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:15:59,004 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:15:59,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:15:59,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:15:59,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:15:59,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5e6dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59, skipping insertion in model container [2025-04-13 19:15:59,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,030 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:15:59,311 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i[30739,30752] [2025-04-13 19:15:59,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:15:59,335 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:15:59,380 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i[30739,30752] [2025-04-13 19:15:59,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:15:59,405 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:15:59,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59 WrapperNode [2025-04-13 19:15:59,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:15:59,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:15:59,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:15:59,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:15:59,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,431 INFO L138 Inliner]: procedures = 163, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2025-04-13 19:15:59,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:15:59,431 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:15:59,431 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:15:59,431 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:15:59,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,449 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]. [2025-04-13 19:15:59,450 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,452 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,453 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:15:59,458 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:15:59,458 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:15:59,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:15:59,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (1/1) ... [2025-04-13 19:15:59,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:15:59,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:15:59,484 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) [2025-04-13 19:15:59,486 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 [2025-04-13 19:15:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-04-13 19:15:59,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-04-13 19:15:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 19:15:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 19:15:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:15:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:15:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:15:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 19:15:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 19:15:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:15:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:15:59,504 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 19:15:59,590 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:15:59,592 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:15:59,674 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:15:59,675 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:15:59,675 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:15:59,749 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:15:59,757 INFO L313 CfgBuilder]: Removed 1 assume(true) statements. [2025-04-13 19:15:59,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:15:59 BoogieIcfgContainer [2025-04-13 19:15:59,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:15:59,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:15:59,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:15:59,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:15:59,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:15:59" (1/3) ... [2025-04-13 19:15:59,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa3c67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:15:59, skipping insertion in model container [2025-04-13 19:15:59,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:15:59" (2/3) ... [2025-04-13 19:15:59,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa3c67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:15:59, skipping insertion in model container [2025-04-13 19:15:59,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:15:59" (3/3) ... [2025-04-13 19:15:59,764 INFO L128 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2025-04-13 19:15:59,774 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:15:59,775 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 01b_inc.i that has 2 procedures, 16 locations, 17 edges, 1 initial locations, 1 loop locations, and 1 error locations. [2025-04-13 19:15:59,775 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:15:59,807 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:15:59,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 19 places, 18 transitions, 40 flow [2025-04-13 19:15:59,852 INFO L116 PetriNetUnfolderBase]: 1/18 cut-off events. [2025-04-13 19:15:59,855 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:15:59,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 18 events. 1/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2025-04-13 19:15:59,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 19 places, 18 transitions, 40 flow [2025-04-13 19:15:59,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 17 transitions, 38 flow [2025-04-13 19:15:59,869 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:15:59,881 INFO L340 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=LoopHeads, 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;@7a4e152, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:15:59,881 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 19:15:59,885 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:15:59,885 INFO L116 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-04-13 19:15:59,885 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:15:59,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:15:59,886 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-04-13 19:15:59,886 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-13 19:15:59,890 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:15:59,890 INFO L85 PathProgramCache]: Analyzing trace with hash 4789488, now seen corresponding path program 1 times [2025-04-13 19:15:59,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:15:59,896 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852878306] [2025-04-13 19:15:59,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:15:59,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:15:59,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:15:59,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:15:59,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:15:59,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:15:59,976 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:15:59,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:15:59,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:15:59,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:15:59,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:16:00,008 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:16:00,009 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:16:00,010 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-04-13 19:16:00,012 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-04-13 19:16:00,012 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-04-13 19:16:00,013 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:16:00,013 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:16:00,016 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:16:00,017 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 19:16:00,039 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:16:00,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 31 transitions, 72 flow [2025-04-13 19:16:00,055 INFO L116 PetriNetUnfolderBase]: 2/33 cut-off events. [2025-04-13 19:16:00,056 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:16:00,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 33 events. 2/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 26. Up to 3 conditions per place. [2025-04-13 19:16:00,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 31 transitions, 72 flow [2025-04-13 19:16:00,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 30 transitions, 70 flow [2025-04-13 19:16:00,061 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:16:00,061 INFO L340 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=LoopHeads, 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;@7a4e152, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:16:00,061 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 19:16:00,067 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:16:00,067 INFO L116 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-04-13 19:16:00,067 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:16:00,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:16:00,068 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-04-13 19:16:00,068 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-04-13 19:16:00,068 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:16:00,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1235917234, now seen corresponding path program 1 times [2025-04-13 19:16:00,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:16:00,068 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466753701] [2025-04-13 19:16:00,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:16:00,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:16:00,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:16:00,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:16:00,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:16:00,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:16:00,097 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:16:00,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:16:00,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:16:00,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:16:00,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:16:00,116 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:16:00,116 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:16:00,116 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-13 19:16:00,120 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-13 19:16:00,120 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2025-04-13 19:16:00,120 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 19:16:00,120 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:16:00,120 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:16:00,121 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:16:00,121 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 19:16:00,167 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:16:00,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 106 flow [2025-04-13 19:16:00,184 INFO L116 PetriNetUnfolderBase]: 3/48 cut-off events. [2025-04-13 19:16:00,184 INFO L117 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-04-13 19:16:00,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 3/48 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 135 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2025-04-13 19:16:00,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 106 flow [2025-04-13 19:16:00,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 43 transitions, 104 flow [2025-04-13 19:16:00,187 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:16:00,187 INFO L340 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=LoopHeads, 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;@7a4e152, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:16:00,187 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 19:16:00,193 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:16:00,193 INFO L116 PetriNetUnfolderBase]: 0/23 cut-off events. [2025-04-13 19:16:00,193 INFO L117 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-04-13 19:16:00,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:16:00,193 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2025-04-13 19:16:00,193 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-13 19:16:00,193 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:16:00,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1153103629, now seen corresponding path program 1 times [2025-04-13 19:16:00,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:16:00,195 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141147369] [2025-04-13 19:16:00,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:16:00,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:16:00,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:16:00,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:16:00,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:16:00,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:16:00,215 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:16:00,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:16:00,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:16:00,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:16:00,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:16:00,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:16:00,240 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:16:00,240 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-13 19:16:00,240 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-13 19:16:00,241 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-04-13 19:16:00,241 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-13 19:16:00,241 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 19:16:00,241 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:16:00,241 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:16:00,241 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:16:00,241 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-04-13 19:16:00,267 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:16:00,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 57 transitions, 142 flow [2025-04-13 19:16:00,285 INFO L116 PetriNetUnfolderBase]: 4/63 cut-off events. [2025-04-13 19:16:00,285 INFO L117 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-04-13 19:16:00,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 63 events. 4/63 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 201 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 60. Up to 5 conditions per place. [2025-04-13 19:16:00,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 57 transitions, 142 flow [2025-04-13 19:16:00,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 56 transitions, 140 flow [2025-04-13 19:16:00,288 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:16:00,289 INFO L340 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=LoopHeads, 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;@7a4e152, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:16:00,289 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 19:16:00,298 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:16:00,298 INFO L116 PetriNetUnfolderBase]: 0/35 cut-off events. [2025-04-13 19:16:00,298 INFO L117 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-04-13 19:16:00,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:16:00,298 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:16:00,298 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-04-13 19:16:00,298 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:16:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1317305684, now seen corresponding path program 1 times [2025-04-13 19:16:00,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:16:00,298 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099751622] [2025-04-13 19:16:00,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:16:00,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:16:00,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-13 19:16:00,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-13 19:16:00,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:16:00,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:16:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:16:00,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:16:00,531 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099751622] [2025-04-13 19:16:00,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099751622] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:16:00,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:16:00,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:16:00,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274170020] [2025-04-13 19:16:00,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:16:00,535 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:16:00,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:16:00,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:16:00,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:16:00,565 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 57 [2025-04-13 19:16:00,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2025-04-13 19:16:00,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:16:00,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 57 [2025-04-13 19:16:00,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:16:09,642 INFO L116 PetriNetUnfolderBase]: 174848/234781 cut-off events. [2025-04-13 19:16:09,643 INFO L117 PetriNetUnfolderBase]: For 20859/20859 co-relation queries the response was YES. [2025-04-13 19:16:10,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473569 conditions, 234781 events. 174848/234781 cut-off events. For 20859/20859 co-relation queries the response was YES. Maximal size of possible extension queue 8879. Compared 1674898 event pairs, 58443 based on Foata normal form. 0/198969 useless extension candidates. Maximal degree in co-relation 207776. Up to 106050 conditions per place. [2025-04-13 19:16:11,085 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 151 selfloop transitions, 15 changer transitions 0/171 dead transitions. [2025-04-13 19:16:11,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 171 transitions, 776 flow [2025-04-13 19:16:11,087 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:16:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:16:11,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions. [2025-04-13 19:16:11,095 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-04-13 19:16:11,096 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 140 flow. Second operand 6 states and 209 transitions. [2025-04-13 19:16:11,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 171 transitions, 776 flow [2025-04-13 19:16:11,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 171 transitions, 746 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-04-13 19:16:11,119 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 250 flow [2025-04-13 19:16:11,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2025-04-13 19:16:11,122 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2025-04-13 19:16:11,122 INFO L485 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 250 flow [2025-04-13 19:16:11,122 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2025-04-13 19:16:11,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:16:11,123 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2025-04-13 19:16:11,123 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:16:11,123 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-04-13 19:16:11,123 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:16:11,123 INFO L85 PathProgramCache]: Analyzing trace with hash 620897441, now seen corresponding path program 1 times [2025-04-13 19:16:11,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:16:11,123 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408207558] [2025-04-13 19:16:11,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:16:11,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:16:11,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 19:16:11,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:16:11,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:16:11,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:16:11,136 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:16:11,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 19:16:11,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:16:11,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:16:11,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:16:11,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:16:11,146 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:16:11,146 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2025-04-13 19:16:11,146 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-04-13 19:16:11,146 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2025-04-13 19:16:11,146 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2025-04-13 19:16:11,146 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-04-13 19:16:11,146 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-04-13 19:16:11,146 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:16:11,146 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-13 19:16:11,147 WARN L247 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:16:11,147 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-04-13 19:16:11,174 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:16:11,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 70 transitions, 180 flow [2025-04-13 19:16:11,182 INFO L116 PetriNetUnfolderBase]: 5/78 cut-off events. [2025-04-13 19:16:11,182 INFO L117 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-04-13 19:16:11,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 78 events. 5/78 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 269 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2025-04-13 19:16:11,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 70 transitions, 180 flow [2025-04-13 19:16:11,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 69 transitions, 178 flow [2025-04-13 19:16:11,185 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:16:11,185 INFO L340 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=LoopHeads, 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;@7a4e152, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:16:11,185 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-13 19:16:11,190 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:16:11,190 INFO L116 PetriNetUnfolderBase]: 0/28 cut-off events. [2025-04-13 19:16:11,190 INFO L117 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-04-13 19:16:11,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:16:11,190 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:16:11,190 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2025-04-13 19:16:11,192 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:16:11,192 INFO L85 PathProgramCache]: Analyzing trace with hash -457093414, now seen corresponding path program 1 times [2025-04-13 19:16:11,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:16:11,192 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876265916] [2025-04-13 19:16:11,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:16:11,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:16:11,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-13 19:16:11,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-13 19:16:11,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:16:11,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:16:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:16:11,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:16:11,306 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876265916] [2025-04-13 19:16:11,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876265916] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:16:11,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:16:11,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:16:11,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448185845] [2025-04-13 19:16:11,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:16:11,307 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:16:11,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:16:11,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:16:11,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:16:11,319 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 70 [2025-04-13 19:16:11,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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) [2025-04-13 19:16:11,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:16:11,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 70 [2025-04-13 19:16:11,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand