/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/sync01.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:14:36,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:14:36,410 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 19:14:36,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:14:36,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:14:36,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:14:36,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:14:36,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:14:36,443 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:14:36,443 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:14:36,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:14:36,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:14:36,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:14:36,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:14:36,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:14:36,444 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:14:36,444 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:14:36,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:14:36,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:14:36,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:14:36,445 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 19:14:36,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:14:36,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:14:36,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:14:36,662 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:14:36,662 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:14:36,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2025-04-13 19:14:37,903 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2144c5b25/9fd6ce0b08944e91bc75aa1aa2c4c0ff/FLAGdc25a9881 [2025-04-13 19:14:38,123 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:14:38,124 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2025-04-13 19:14:38,137 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2144c5b25/9fd6ce0b08944e91bc75aa1aa2c4c0ff/FLAGdc25a9881 [2025-04-13 19:14:38,954 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2144c5b25/9fd6ce0b08944e91bc75aa1aa2c4c0ff [2025-04-13 19:14:38,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:14:38,957 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:14:38,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:14:38,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:14:38,962 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:14:38,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:14:38" (1/1) ... [2025-04-13 19:14:38,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3d823c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:38, skipping insertion in model container [2025-04-13 19:14:38,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:14:38" (1/1) ... [2025-04-13 19:14:38,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:14:39,355 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/sync01.i[42004,42017] [2025-04-13 19:14:39,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:14:39,378 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:14:39,421 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/sync01.i[42004,42017] [2025-04-13 19:14:39,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:14:39,471 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:14:39,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39 WrapperNode [2025-04-13 19:14:39,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:14:39,472 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:14:39,472 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:14:39,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:14:39,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,520 INFO L138 Inliner]: procedures = 268, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 252 [2025-04-13 19:14:39,521 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:14:39,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:14:39,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:14:39,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:14:39,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,544 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-04-13 19:14:39,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,552 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:14:39,564 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:14:39,564 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:14:39,564 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:14:39,565 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (1/1) ... [2025-04-13 19:14:39,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:14:39,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:14:39,589 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 19:14:39,591 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 19:14:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 19:14:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 19:14:39,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 19:14:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 19:14:39,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 19:14:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 19:14:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:14:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:14:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:14:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:14:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:14:39,606 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 19:14:39,712 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:14:39,714 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:14:39,971 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:14:39,972 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:14:39,972 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:14:41,916 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:14:41,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:14:41 BoogieIcfgContainer [2025-04-13 19:14:41,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:14:41,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:14:41,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:14:41,923 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:14:41,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:14:38" (1/3) ... [2025-04-13 19:14:41,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dc5d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:14:41, skipping insertion in model container [2025-04-13 19:14:41,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:14:39" (2/3) ... [2025-04-13 19:14:41,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dc5d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:14:41, skipping insertion in model container [2025-04-13 19:14:41,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:14:41" (3/3) ... [2025-04-13 19:14:41,924 INFO L128 eAbstractionObserver]: Analyzing ICFG sync01.i [2025-04-13 19:14:41,937 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:14:41,938 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sync01.i that has 3 procedures, 28 locations, 27 edges, 1 initial locations, 2 loop locations, and 1 error locations. [2025-04-13 19:14:41,938 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:14:41,973 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 19:14:41,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 29 transitions, 72 flow [2025-04-13 19:14:42,044 INFO L116 PetriNetUnfolderBase]: 2/27 cut-off events. [2025-04-13 19:14:42,047 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:14:42,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 2/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-04-13 19:14:42,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 29 transitions, 72 flow [2025-04-13 19:14:42,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 26 transitions, 64 flow [2025-04-13 19:14:42,062 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:14:42,069 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;@41f39b00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:14:42,070 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 19:14:42,095 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:14:42,095 INFO L116 PetriNetUnfolderBase]: 2/25 cut-off events. [2025-04-13 19:14:42,095 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:14:42,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:42,096 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 19:14:42,096 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 19:14:42,100 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash -623360881, now seen corresponding path program 1 times [2025-04-13 19:14:42,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:42,105 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299457851] [2025-04-13 19:14:42,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:14:42,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:42,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 19:14:42,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 19:14:42,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:14:42,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:42,725 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 19:14:42,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:42,726 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299457851] [2025-04-13 19:14:42,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299457851] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:14:42,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:14:42,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 19:14:42,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762401363] [2025-04-13 19:14:42,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:14:42,733 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 19:14:42,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:42,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 19:14:42,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 19:14:42,767 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-04-13 19:14:42,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 19:14:42,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:42,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-04-13 19:14:42,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:42,844 INFO L116 PetriNetUnfolderBase]: 89/174 cut-off events. [2025-04-13 19:14:42,845 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-13 19:14:42,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 174 events. 89/174 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 570 event pairs, 32 based on Foata normal form. 10/176 useless extension candidates. Maximal degree in co-relation 324. Up to 113 conditions per place. [2025-04-13 19:14:42,847 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 20 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2025-04-13 19:14:42,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 110 flow [2025-04-13 19:14:42,848 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 19:14:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 19:14:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2025-04-13 19:14:42,855 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2025-04-13 19:14:42,856 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 64 flow. Second operand 3 states and 45 transitions. [2025-04-13 19:14:42,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 110 flow [2025-04-13 19:14:42,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 102 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-13 19:14:42,861 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 58 flow [2025-04-13 19:14:42,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2025-04-13 19:14:42,867 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2025-04-13 19:14:42,867 INFO L485 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 58 flow [2025-04-13 19:14:42,867 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 19:14:42,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:42,867 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 19:14:42,868 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:14:42,868 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 19:14:42,868 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash -426424961, now seen corresponding path program 2 times [2025-04-13 19:14:42,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:42,869 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394597737] [2025-04-13 19:14:42,869 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:14:42,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:43,034 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-04-13 19:14:43,056 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 19:14:43,057 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:14:43,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:43,231 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 19:14:43,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:43,232 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394597737] [2025-04-13 19:14:43,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394597737] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:14:43,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:14:43,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:14:43,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464802006] [2025-04-13 19:14:43,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:14:43,233 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:14:43,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:43,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:14:43,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:14:43,243 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-04-13 19:14:43,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:14:43,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:43,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-04-13 19:14:43,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:14:43,395 INFO L116 PetriNetUnfolderBase]: 61/143 cut-off events. [2025-04-13 19:14:43,395 INFO L117 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-04-13 19:14:43,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 143 events. 61/143 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 427 event pairs, 12 based on Foata normal form. 19/160 useless extension candidates. Maximal degree in co-relation 129. Up to 61 conditions per place. [2025-04-13 19:14:43,396 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2025-04-13 19:14:43,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 147 flow [2025-04-13 19:14:43,396 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:14:43,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:14:43,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2025-04-13 19:14:43,397 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.41954022988505746 [2025-04-13 19:14:43,397 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 58 flow. Second operand 6 states and 73 transitions. [2025-04-13 19:14:43,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 147 flow [2025-04-13 19:14:43,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 143 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 19:14:43,398 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2025-04-13 19:14:43,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2025-04-13 19:14:43,399 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2025-04-13 19:14:43,399 INFO L485 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2025-04-13 19:14:43,399 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:14:43,401 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 19:14:43,401 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 19:14:43,401 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 19:14:43,402 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:14:43,402 INFO L422 BasicCegarLoop]: Path program histogram: [2] [2025-04-13 19:14:43,404 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:14:43,404 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:14:43,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:14:43 BasicIcfg [2025-04-13 19:14:43,411 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:14:43,412 INFO L158 Benchmark]: Toolchain (without parser) took 4454.61ms. Allocated memory was 155.2MB in the beginning and 469.8MB in the end (delta: 314.6MB). Free memory was 110.6MB in the beginning and 367.2MB in the end (delta: -256.6MB). Peak memory consumption was 55.0MB. Max. memory is 8.0GB. [2025-04-13 19:14:43,412 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:14:43,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.31ms. Allocated memory is still 155.2MB. Free memory was 110.6MB in the beginning and 78.3MB in the end (delta: 32.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2025-04-13 19:14:43,413 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.58ms. Allocated memory is still 155.2MB. Free memory was 78.3MB in the beginning and 75.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:14:43,413 INFO L158 Benchmark]: Boogie Preprocessor took 41.90ms. Allocated memory is still 155.2MB. Free memory was 75.2MB in the beginning and 71.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:14:43,413 INFO L158 Benchmark]: RCFGBuilder took 2353.26ms. Allocated memory was 155.2MB in the beginning and 310.4MB in the end (delta: 155.2MB). Free memory was 71.9MB in the beginning and 209.6MB in the end (delta: -137.7MB). Peak memory consumption was 177.0MB. Max. memory is 8.0GB. [2025-04-13 19:14:43,413 INFO L158 Benchmark]: TraceAbstraction took 1492.21ms. Allocated memory was 310.4MB in the beginning and 469.8MB in the end (delta: 159.4MB). Free memory was 209.6MB in the beginning and 367.2MB in the end (delta: -157.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:14:43,414 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 86.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 513.31ms. Allocated memory is still 155.2MB. Free memory was 110.6MB in the beginning and 78.3MB in the end (delta: 32.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.58ms. Allocated memory is still 155.2MB. Free memory was 78.3MB in the beginning and 75.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.90ms. Allocated memory is still 155.2MB. Free memory was 75.2MB in the beginning and 71.9MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 2353.26ms. Allocated memory was 155.2MB in the beginning and 310.4MB in the end (delta: 155.2MB). Free memory was 71.9MB in the beginning and 209.6MB in the end (delta: -137.7MB). Peak memory consumption was 177.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1492.21ms. Allocated memory was 310.4MB in the beginning and 469.8MB in the end (delta: 159.4MB). Free memory was 209.6MB in the beginning and 367.2MB in the end (delta: -157.7MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 966]: 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, 48 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: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124 IncrementalHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 2 mSDtfsCounter, 124 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 0.4s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 19:14:43,434 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...