/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-wmm/safe029_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:37:33,076 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:37:33,133 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 19:37:33,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:37:33,136 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:37:33,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:37:33,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:37:33,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:37:33,158 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:37:33,158 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:37:33,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:37:33,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:37:33,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:37:33,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:37:33,158 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:37:33,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:37:33,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:37:33,158 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:37:33,159 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:37:33,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:37:33,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:37:33,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:37:33,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:37:33,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:37:33,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:37:33,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:37:33,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:37:33,160 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:37:33,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:37:33,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:37:33,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:37:33,161 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:37:33,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:37:33,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:37:33,161 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 19:37:33,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:37:33,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:37:33,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:37:33,382 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:37:33,384 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:37:33,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2025-04-13 19:37:34,652 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a560d54e5/5401dd3821b1494794cef322a6c667c3/FLAGcb71ba1a8 [2025-04-13 19:37:34,869 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:37:34,870 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2025-04-13 19:37:34,878 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a560d54e5/5401dd3821b1494794cef322a6c667c3/FLAGcb71ba1a8 [2025-04-13 19:37:35,703 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a560d54e5/5401dd3821b1494794cef322a6c667c3 [2025-04-13 19:37:35,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:37:35,706 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:37:35,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:37:35,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:37:35,712 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:37:35,713 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:37:35" (1/1) ... [2025-04-13 19:37:35,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ba3663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:35, skipping insertion in model container [2025-04-13 19:37:35,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:37:35" (1/1) ... [2025-04-13 19:37:35,744 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:37:35,882 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-wmm/safe029_tso.i[945,958] [2025-04-13 19:37:35,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:37:35,990 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:37:36,006 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-wmm/safe029_tso.i[945,958] [2025-04-13 19:37:36,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:37:36,063 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:37:36,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36 WrapperNode [2025-04-13 19:37:36,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:37:36,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:37:36,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:37:36,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:37:36,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,093 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2025-04-13 19:37:36,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:37:36,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:37:36,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:37:36,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:37:36,101 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,103 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,121 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 19:37:36,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,127 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,127 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:37:36,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:37:36,141 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:37:36,141 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:37:36,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (1/1) ... [2025-04-13 19:37:36,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:37:36,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:37:36,168 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 19:37:36,170 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 19:37:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 19:37:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:37:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-13 19:37:36,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-13 19:37:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-13 19:37:36,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-13 19:37:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:37:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 19:37:36,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:37:36,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:37:36,188 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 19:37:36,267 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:37:36,268 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:37:36,365 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:37:36,366 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:37:36,366 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:37:36,433 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:37:36,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:37:36 BoogieIcfgContainer [2025-04-13 19:37:36,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:37:36,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:37:36,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:37:36,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:37:36,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:37:35" (1/3) ... [2025-04-13 19:37:36,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78426860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:37:36, skipping insertion in model container [2025-04-13 19:37:36,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:36" (2/3) ... [2025-04-13 19:37:36,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78426860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:37:36, skipping insertion in model container [2025-04-13 19:37:36,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:37:36" (3/3) ... [2025-04-13 19:37:36,440 INFO L128 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2025-04-13 19:37:36,449 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:37:36,450 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe029_tso.i that has 3 procedures, 26 locations, 23 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 19:37:36,450 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:37:36,479 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:37:36,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 58 flow [2025-04-13 19:37:36,521 INFO L116 PetriNetUnfolderBase]: 0/23 cut-off events. [2025-04-13 19:37:36,523 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:37:36,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 23 events. 0/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-13 19:37:36,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 25 transitions, 58 flow [2025-04-13 19:37:36,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2025-04-13 19:37:36,530 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:37:36,537 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;@4480cfb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:37:36,537 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 19:37:36,542 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:37:36,542 INFO L116 PetriNetUnfolderBase]: 0/20 cut-off events. [2025-04-13 19:37:36,542 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:37:36,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:36,542 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:37:36,543 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 19:37:36,548 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:36,548 INFO L85 PathProgramCache]: Analyzing trace with hash -949638421, now seen corresponding path program 1 times [2025-04-13 19:37:36,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:36,553 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366085373] [2025-04-13 19:37:36,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:36,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:36,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 19:37:36,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:37:36,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:36,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:36,877 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 19:37:36,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:36,878 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366085373] [2025-04-13 19:37:36,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366085373] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:36,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:36,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:37:36,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241038164] [2025-04-13 19:37:36,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:36,884 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:37:36,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:36,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:37:36,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:37:36,913 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 25 [2025-04-13 19:37:36,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 19:37:36,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:36,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 25 [2025-04-13 19:37:36,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:37,021 INFO L116 PetriNetUnfolderBase]: 54/136 cut-off events. [2025-04-13 19:37:37,021 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:37:37,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 136 events. 54/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 530 event pairs, 6 based on Foata normal form. 9/140 useless extension candidates. Maximal degree in co-relation 250. Up to 55 conditions per place. [2025-04-13 19:37:37,024 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 17 selfloop transitions, 4 changer transitions 1/32 dead transitions. [2025-04-13 19:37:37,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 117 flow [2025-04-13 19:37:37,025 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 19:37:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 19:37:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2025-04-13 19:37:37,034 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.72 [2025-04-13 19:37:37,036 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 4 states and 72 transitions. [2025-04-13 19:37:37,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 117 flow [2025-04-13 19:37:37,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 19:37:37,042 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 74 flow [2025-04-13 19:37:37,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2025-04-13 19:37:37,047 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2025-04-13 19:37:37,047 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 74 flow [2025-04-13 19:37:37,048 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 19:37:37,048 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:37,048 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:37:37,048 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:37:37,048 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 19:37:37,049 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:37,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1372331049, now seen corresponding path program 1 times [2025-04-13 19:37:37,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:37,049 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189141721] [2025-04-13 19:37:37,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:37,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:37,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 19:37:37,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 19:37:37,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:37,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:37,213 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 19:37:37,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:37,213 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189141721] [2025-04-13 19:37:37,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189141721] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:37,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:37,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:37:37,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312179592] [2025-04-13 19:37:37,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:37,214 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:37:37,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:37,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:37:37,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:37:37,223 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 25 [2025-04-13 19:37:37,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 19:37:37,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:37,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 25 [2025-04-13 19:37:37,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:37,310 INFO L116 PetriNetUnfolderBase]: 38/99 cut-off events. [2025-04-13 19:37:37,311 INFO L117 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2025-04-13 19:37:37,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 99 events. 38/99 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 260 event pairs, 2 based on Foata normal form. 8/103 useless extension candidates. Maximal degree in co-relation 232. Up to 28 conditions per place. [2025-04-13 19:37:37,313 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 16 selfloop transitions, 6 changer transitions 1/33 dead transitions. [2025-04-13 19:37:37,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 143 flow [2025-04-13 19:37:37,313 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:37:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:37:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2025-04-13 19:37:37,314 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.68 [2025-04-13 19:37:37,314 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 74 flow. Second operand 5 states and 85 transitions. [2025-04-13 19:37:37,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 143 flow [2025-04-13 19:37:37,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 134 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-13 19:37:37,316 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 90 flow [2025-04-13 19:37:37,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2025-04-13 19:37:37,316 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2025-04-13 19:37:37,317 INFO L485 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 90 flow [2025-04-13 19:37:37,317 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 19:37:37,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:37,318 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] [2025-04-13 19:37:37,318 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:37:37,318 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 19:37:37,320 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:37,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2127398629, now seen corresponding path program 1 times [2025-04-13 19:37:37,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:37,320 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540313018] [2025-04-13 19:37:37,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:37,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:37,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 19:37:37,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 19:37:37,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:37,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:37,478 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 19:37:37,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:37,478 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540313018] [2025-04-13 19:37:37,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540313018] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:37,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:37,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:37:37,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932416627] [2025-04-13 19:37:37,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:37,479 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:37:37,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:37,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:37:37,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:37:37,487 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2025-04-13 19:37:37,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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 19:37:37,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:37,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2025-04-13 19:37:37,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:37,554 INFO L116 PetriNetUnfolderBase]: 57/141 cut-off events. [2025-04-13 19:37:37,554 INFO L117 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2025-04-13 19:37:37,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 141 events. 57/141 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 486 event pairs, 29 based on Foata normal form. 4/134 useless extension candidates. Maximal degree in co-relation 304. Up to 76 conditions per place. [2025-04-13 19:37:37,555 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2025-04-13 19:37:37,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 160 flow [2025-04-13 19:37:37,556 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 19:37:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 19:37:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2025-04-13 19:37:37,556 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-04-13 19:37:37,557 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 90 flow. Second operand 4 states and 65 transitions. [2025-04-13 19:37:37,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 160 flow [2025-04-13 19:37:37,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 132 flow, removed 5 selfloop flow, removed 6 redundant places. [2025-04-13 19:37:37,558 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2025-04-13 19:37:37,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2025-04-13 19:37:37,558 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2025-04-13 19:37:37,558 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2025-04-13 19:37:37,558 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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 19:37:37,561 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 19:37:37,561 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 19:37:37,562 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 19:37:37,562 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:37:37,562 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-13 19:37:37,565 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:37:37,566 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:37:37,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:37:37 BasicIcfg [2025-04-13 19:37:37,571 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:37:37,572 INFO L158 Benchmark]: Toolchain (without parser) took 1865.86ms. Allocated memory is still 155.2MB. Free memory was 107.4MB in the beginning and 45.7MB in the end (delta: 61.8MB). Peak memory consumption was 61.4MB. Max. memory is 8.0GB. [2025-04-13 19:37:37,573 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:37:37,573 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.69ms. Allocated memory is still 155.2MB. Free memory was 107.4MB in the beginning and 85.0MB in the end (delta: 22.4MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 19:37:37,573 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.60ms. Allocated memory is still 155.2MB. Free memory was 85.0MB in the beginning and 83.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:37:37,573 INFO L158 Benchmark]: Boogie Preprocessor took 46.04ms. Allocated memory is still 155.2MB. Free memory was 83.0MB in the beginning and 80.8MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:37:37,574 INFO L158 Benchmark]: RCFGBuilder took 292.79ms. Allocated memory is still 155.2MB. Free memory was 80.8MB in the beginning and 62.1MB in the end (delta: 18.7MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2025-04-13 19:37:37,574 INFO L158 Benchmark]: TraceAbstraction took 1136.78ms. Allocated memory is still 155.2MB. Free memory was 61.5MB in the beginning and 45.7MB in the end (delta: 15.9MB). Peak memory consumption was 15.3MB. Max. memory is 8.0GB. [2025-04-13 19:37:37,575 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 354.69ms. Allocated memory is still 155.2MB. Free memory was 107.4MB in the beginning and 85.0MB in the end (delta: 22.4MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.60ms. Allocated memory is still 155.2MB. Free memory was 85.0MB in the beginning and 83.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 46.04ms. Allocated memory is still 155.2MB. Free memory was 83.0MB in the beginning and 80.8MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 292.79ms. Allocated memory is still 155.2MB. Free memory was 80.8MB in the beginning and 62.1MB in the end (delta: 18.7MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1136.78ms. Allocated memory is still 155.2MB. Free memory was 61.5MB in the beginning and 45.7MB in the end (delta: 15.9MB). Peak memory consumption was 15.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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, 42 locations, 39 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: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 6 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 19:37:37,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...