/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/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:14:31,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:14:31,514 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 19:14:31,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:14:31,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:14:31,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:14:31,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:14:31,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:14:31,536 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:14:31,536 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:14:31,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:14:31,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:14:31,537 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:14:31,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:14:31,537 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:14:31,537 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:14:31,537 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:14:31,537 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:14:31,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:14:31,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:14:31,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:14:31,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:14:31,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:14:31,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:14:31,537 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:14:31,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:14:31,538 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:14:31,538 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:14:31,538 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:14:31,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:14:31,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:14:31,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:14:31,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:14:31,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:14:31,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:14:31,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:14:31,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:14:31,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:14:31,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:14:31,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:14:31,540 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:14:31,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:14:31,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:14:31,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:14:31,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:14:31,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:14:31,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:14:31,540 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 19:14:31,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:14:31,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:14:31,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:14:31,781 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:14:31,781 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:14:31,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2025-04-13 19:14:33,153 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c35af27/cdcc70c5c6e9418bac1f503688dbcf6a/FLAG178661a21 [2025-04-13 19:14:33,451 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:14:33,452 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2025-04-13 19:14:33,467 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c35af27/cdcc70c5c6e9418bac1f503688dbcf6a/FLAG178661a21 [2025-04-13 19:14:34,204 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c35af27/cdcc70c5c6e9418bac1f503688dbcf6a [2025-04-13 19:14:34,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:14:34,208 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:14:34,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:14:34,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:14:34,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:14:34,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2baabfb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34, skipping insertion in model container [2025-04-13 19:14:34,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,241 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:14:34,544 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/stateful01-2.i[30826,30839] [2025-04-13 19:14:34,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:14:34,565 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:14:34,610 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/stateful01-2.i[30826,30839] [2025-04-13 19:14:34,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:14:34,636 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:14:34,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34 WrapperNode [2025-04-13 19:14:34,637 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:14:34,638 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:14:34,638 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:14:34,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:14:34,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,665 INFO L138 Inliner]: procedures = 168, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 50 [2025-04-13 19:14:34,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:14:34,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:14:34,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:14:34,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:14:34,671 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,683 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2025-04-13 19:14:34,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,687 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,688 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:14:34,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:14:34,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:14:34,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:14:34,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (1/1) ... [2025-04-13 19:14:34,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:14:34,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:14:34,722 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 19:14:34,730 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 19:14:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 19:14:34,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 19:14:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 19:14:34,747 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 19:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 19:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 19:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 19:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:14:34,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:14:34,748 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 19:14:34,843 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:14:34,844 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:14:34,977 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:14:34,978 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:14:34,978 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:14:35,111 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:14:35,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:14:35 BoogieIcfgContainer [2025-04-13 19:14:35,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:14:35,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:14:35,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:14:35,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:14:35,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:14:34" (1/3) ... [2025-04-13 19:14:35,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b287e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:14:35, skipping insertion in model container [2025-04-13 19:14:35,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:34" (2/3) ... [2025-04-13 19:14:35,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b287e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:14:35, skipping insertion in model container [2025-04-13 19:14:35,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:14:35" (3/3) ... [2025-04-13 19:14:35,119 INFO L128 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2025-04-13 19:14:35,130 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:14:35,131 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stateful01-2.i that has 3 procedures, 30 locations, 27 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 19:14:35,131 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:14:35,171 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 19:14:35,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 72 flow [2025-04-13 19:14:35,223 INFO L116 PetriNetUnfolderBase]: 0/27 cut-off events. [2025-04-13 19:14:35,224 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:14:35,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 0/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-13 19:14:35,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 72 flow [2025-04-13 19:14:35,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 26 transitions, 64 flow [2025-04-13 19:14:35,234 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:14:35,247 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;@44abe10a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:14:35,247 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 19:14:35,279 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:14:35,279 INFO L116 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-04-13 19:14:35,279 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:14:35,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:35,280 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:35,280 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:14:35,284 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash -949872304, now seen corresponding path program 1 times [2025-04-13 19:14:35,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:35,290 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582329467] [2025-04-13 19:14:35,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:14:35,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:35,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-13 19:14:35,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 19:14:35,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:14:35,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:35,672 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 19:14:35,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:35,673 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582329467] [2025-04-13 19:14:35,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582329467] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:14:35,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:14:35,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:14:35,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261198698] [2025-04-13 19:14:35,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:14:35,680 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:14:35,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:35,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:14:35,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:14:35,697 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-04-13 19:14:35,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 19:14:35,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:35,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-04-13 19:14:35,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:35,923 INFO L116 PetriNetUnfolderBase]: 271/537 cut-off events. [2025-04-13 19:14:35,923 INFO L117 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2025-04-13 19:14:35,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 537 events. 271/537 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2348 event pairs, 72 based on Foata normal form. 1/537 useless extension candidates. Maximal degree in co-relation 995. Up to 230 conditions per place. [2025-04-13 19:14:35,931 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 22 selfloop transitions, 2 changer transitions 25/53 dead transitions. [2025-04-13 19:14:35,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 53 transitions, 228 flow [2025-04-13 19:14:35,933 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:14:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:14:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2025-04-13 19:14:35,941 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-04-13 19:14:35,942 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 64 flow. Second operand 5 states and 80 transitions. [2025-04-13 19:14:35,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 53 transitions, 228 flow [2025-04-13 19:14:35,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 53 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-13 19:14:35,954 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 66 flow [2025-04-13 19:14:35,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2025-04-13 19:14:35,958 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-04-13 19:14:35,959 INFO L485 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 66 flow [2025-04-13 19:14:35,959 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 19:14:35,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:35,959 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:35,959 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:14:35,959 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:14:35,960 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:35,960 INFO L85 PathProgramCache]: Analyzing trace with hash -640876144, now seen corresponding path program 2 times [2025-04-13 19:14:35,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:35,960 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938484265] [2025-04-13 19:14:35,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:14:35,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:35,975 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-04-13 19:14:35,984 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 19:14:35,984 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:14:35,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:36,099 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 19:14:36,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:36,099 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938484265] [2025-04-13 19:14:36,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938484265] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:14:36,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:14:36,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:14:36,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219744595] [2025-04-13 19:14:36,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:14:36,100 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 19:14:36,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:36,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 19:14:36,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 19:14:36,101 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-04-13 19:14:36,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 19:14:36,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:36,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-04-13 19:14:36,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:36,178 INFO L116 PetriNetUnfolderBase]: 65/154 cut-off events. [2025-04-13 19:14:36,178 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:14:36,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 154 events. 65/154 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 419 event pairs, 26 based on Foata normal form. 22/172 useless extension candidates. Maximal degree in co-relation 315. Up to 89 conditions per place. [2025-04-13 19:14:36,179 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 18 selfloop transitions, 8 changer transitions 2/32 dead transitions. [2025-04-13 19:14:36,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 136 flow [2025-04-13 19:14:36,180 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 19:14:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 19:14:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2025-04-13 19:14:36,182 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2025-04-13 19:14:36,182 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 66 flow. Second operand 3 states and 50 transitions. [2025-04-13 19:14:36,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 136 flow [2025-04-13 19:14:36,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 130 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-04-13 19:14:36,184 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 76 flow [2025-04-13 19:14:36,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2025-04-13 19:14:36,184 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2025-04-13 19:14:36,185 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 76 flow [2025-04-13 19:14:36,185 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 19:14:36,185 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:36,185 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:14:36,185 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:14:36,186 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 19:14:36,187 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:36,187 INFO L85 PathProgramCache]: Analyzing trace with hash 645806266, now seen corresponding path program 3 times [2025-04-13 19:14:36,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:36,187 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336193516] [2025-04-13 19:14:36,187 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:14:36,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:36,201 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 1 equivalence classes. [2025-04-13 19:14:36,206 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 19:14:36,206 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 19:14:36,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:36,295 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 19:14:36,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:36,296 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336193516] [2025-04-13 19:14:36,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336193516] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:14:36,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:14:36,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:14:36,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452272103] [2025-04-13 19:14:36,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:14:36,296 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:14:36,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:36,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:14:36,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:14:36,297 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-04-13 19:14:36,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 19:14:36,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:36,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-04-13 19:14:36,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:36,380 INFO L116 PetriNetUnfolderBase]: 65/159 cut-off events. [2025-04-13 19:14:36,380 INFO L117 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2025-04-13 19:14:36,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 159 events. 65/159 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 448 event pairs, 12 based on Foata normal form. 1/159 useless extension candidates. Maximal degree in co-relation 127. Up to 104 conditions per place. [2025-04-13 19:14:36,382 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2025-04-13 19:14:36,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 150 flow [2025-04-13 19:14:36,383 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:14:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:14:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2025-04-13 19:14:36,383 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2025-04-13 19:14:36,383 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 76 flow. Second operand 5 states and 59 transitions. [2025-04-13 19:14:36,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 150 flow [2025-04-13 19:14:36,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-13 19:14:36,384 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2025-04-13 19:14:36,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2025-04-13 19:14:36,385 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2025-04-13 19:14:36,385 INFO L485 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2025-04-13 19:14:36,385 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 19:14:36,389 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 19:14:36,389 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 19:14:36,389 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 19:14:36,389 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:14:36,389 INFO L422 BasicCegarLoop]: Path program histogram: [3] [2025-04-13 19:14:36,394 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:14:36,394 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:14:36,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:14:36 BasicIcfg [2025-04-13 19:14:36,401 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:14:36,401 INFO L158 Benchmark]: Toolchain (without parser) took 2193.56ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 59.8MB in the end (delta: 38.7MB). Peak memory consumption was 36.9MB. Max. memory is 8.0GB. [2025-04-13 19:14:36,402 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 155.2MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:14:36,402 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.20ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 76.0MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 19:14:36,402 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.52ms. Allocated memory is still 142.6MB. Free memory was 75.6MB in the beginning and 73.3MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:14:36,402 INFO L158 Benchmark]: Boogie Preprocessor took 26.82ms. Allocated memory is still 142.6MB. Free memory was 73.3MB in the beginning and 71.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:14:36,402 INFO L158 Benchmark]: RCFGBuilder took 418.83ms. Allocated memory is still 142.6MB. Free memory was 71.8MB in the beginning and 37.1MB in the end (delta: 34.8MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2025-04-13 19:14:36,403 INFO L158 Benchmark]: TraceAbstraction took 1287.79ms. Allocated memory is still 142.6MB. Free memory was 36.3MB in the beginning and 59.8MB in the end (delta: -23.5MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:14:36,406 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 155.2MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 428.20ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 76.0MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.52ms. Allocated memory is still 142.6MB. Free memory was 75.6MB in the beginning and 73.3MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.82ms. Allocated memory is still 142.6MB. Free memory was 73.3MB in the beginning and 71.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 418.83ms. Allocated memory is still 142.6MB. Free memory was 71.8MB in the beginning and 37.1MB in the end (delta: 34.8MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1287.79ms. Allocated memory is still 142.6MB. Free memory was 36.3MB in the beginning and 59.8MB in the end (delta: -23.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 727]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 52 locations, 51 edges, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 253 IncrementalHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 253 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 19:14:36,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...