/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_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:10:45,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:10:45,073 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 [2025-04-14 00:10:45,077 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:10:45,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:10:45,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:10:45,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:10:45,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:10:45,108 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:10:45,108 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:10:45,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:10:45,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:10:45,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:10:45,109 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:10:45,109 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:10:45,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:10:45,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:10:45,109 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:10:45,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:10:45,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:10:45,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:10:45,111 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:10:45,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:10:45,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:10:45,111 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:10:45,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:10:45,111 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:10:45,111 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:10:45,111 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:10:45,111 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:10:45,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:10:45,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:10:45,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:10:45,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:10:45,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:10:45,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:10:45,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:10:45,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:10:45,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:10:45,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:10:45,112 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:10:45,112 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:10:45,112 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:10:45,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:10:45,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:10:45,113 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:10:45,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:10:45,113 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 00:10:45,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:10:45,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:10:45,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:10:45,364 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:10:45,365 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:10:45,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.i [2025-04-14 00:10:46,806 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/749ec8e8b/78d5e1525fa0417eb2aebed6e873e7af/FLAGd62dc3986 [2025-04-14 00:10:47,097 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:10:47,098 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i [2025-04-14 00:10:47,113 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/749ec8e8b/78d5e1525fa0417eb2aebed6e873e7af/FLAGd62dc3986 [2025-04-14 00:10:47,857 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/749ec8e8b/78d5e1525fa0417eb2aebed6e873e7af [2025-04-14 00:10:47,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:10:47,860 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:10:47,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:10:47,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:10:47,865 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:10:47,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:10:47" (1/1) ... [2025-04-14 00:10:47,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552ea601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:47, skipping insertion in model container [2025-04-14 00:10:47,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:10:47" (1/1) ... [2025-04-14 00:10:47,892 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:10:48,062 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/safe031_tso.i[945,958] [2025-04-14 00:10:48,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:10:48,231 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:10:48,249 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/safe031_tso.i[945,958] [2025-04-14 00:10:48,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:10:48,298 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:10:48,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48 WrapperNode [2025-04-14 00:10:48,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:10:48,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:10:48,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:10:48,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:10:48,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (1/1) ... [2025-04-14 00:10:48,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (1/1) ... [2025-04-14 00:10:48,328 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2025-04-14 00:10:48,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:10:48,329 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:10:48,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:10:48,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:10:48,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (1/1) ... [2025-04-14 00:10:48,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (1/1) ... [2025-04-14 00:10:48,335 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (1/1) ... [2025-04-14 00:10:48,349 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]. [2025-04-14 00:10:48,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (1/1) ... [2025-04-14 00:10:48,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (1/1) ... [2025-04-14 00:10:48,353 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (1/1) ... [2025-04-14 00:10:48,353 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (1/1) ... [2025-04-14 00:10:48,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (1/1) ... [2025-04-14 00:10:48,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (1/1) ... [2025-04-14 00:10:48,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:10:48,358 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:10:48,358 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:10:48,358 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:10:48,359 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (1/1) ... [2025-04-14 00:10:48,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:10:48,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:10:48,388 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) [2025-04-14 00:10:48,393 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 [2025-04-14 00:10:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 00:10:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:10:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-14 00:10:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-14 00:10:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-14 00:10:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-14 00:10:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-04-14 00:10:48,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-04-14 00:10:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:10:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 00:10:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:10:48,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:10:48,410 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 00:10:48,500 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:10:48,502 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:10:48,655 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:10:48,656 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:10:48,656 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:10:48,786 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:10:48,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:10:48 BoogieIcfgContainer [2025-04-14 00:10:48,786 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:10:48,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:10:48,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:10:48,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:10:48,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:10:47" (1/3) ... [2025-04-14 00:10:48,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6632ddd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:10:48, skipping insertion in model container [2025-04-14 00:10:48,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:10:48" (2/3) ... [2025-04-14 00:10:48,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6632ddd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:10:48, skipping insertion in model container [2025-04-14 00:10:48,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:10:48" (3/3) ... [2025-04-14 00:10:48,795 INFO L128 eAbstractionObserver]: Analyzing ICFG safe031_tso.i [2025-04-14 00:10:48,806 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:10:48,807 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe031_tso.i that has 4 procedures, 36 locations, 32 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-14 00:10:48,807 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:10:48,851 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-14 00:10:48,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 35 transitions, 82 flow [2025-04-14 00:10:48,908 INFO L116 PetriNetUnfolderBase]: 0/32 cut-off events. [2025-04-14 00:10:48,910 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:10:48,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 32 events. 0/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-14 00:10:48,912 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 35 transitions, 82 flow [2025-04-14 00:10:48,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2025-04-14 00:10:48,926 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:10:48,935 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;@104a5623, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:10:48,935 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-14 00:10:48,950 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:10:48,950 INFO L116 PetriNetUnfolderBase]: 0/30 cut-off events. [2025-04-14 00:10:48,950 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:10:48,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:10:48,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:10:48,951 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:10:48,955 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:10:48,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1545743895, now seen corresponding path program 1 times [2025-04-14 00:10:48,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:10:48,963 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653119781] [2025-04-14 00:10:48,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:10:48,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:10:49,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-14 00:10:49,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-14 00:10:49,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:10:49,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:10:49,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:10:49,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:10:49,345 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653119781] [2025-04-14 00:10:49,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653119781] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:10:49,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:10:49,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:10:49,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782396156] [2025-04-14 00:10:49,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:10:49,352 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:10:49,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:10:49,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:10:49,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:10:49,374 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2025-04-14 00:10:49,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:10:49,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:10:49,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2025-04-14 00:10:49,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:10:49,889 INFO L116 PetriNetUnfolderBase]: 3619/5345 cut-off events. [2025-04-14 00:10:49,890 INFO L117 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2025-04-14 00:10:49,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10784 conditions, 5345 events. 3619/5345 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 27909 event pairs, 661 based on Foata normal form. 252/5590 useless extension candidates. Maximal degree in co-relation 10773. Up to 2841 conditions per place. [2025-04-14 00:10:49,930 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 57 selfloop transitions, 5 changer transitions 1/66 dead transitions. [2025-04-14 00:10:49,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 66 transitions, 273 flow [2025-04-14 00:10:49,931 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 00:10:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 00:10:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2025-04-14 00:10:49,941 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2025-04-14 00:10:49,942 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 4 states and 89 transitions. [2025-04-14 00:10:49,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 66 transitions, 273 flow [2025-04-14 00:10:49,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-14 00:10:49,949 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 102 flow [2025-04-14 00:10:49,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2025-04-14 00:10:49,955 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2025-04-14 00:10:49,955 INFO L485 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 102 flow [2025-04-14 00:10:49,955 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:10:49,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:10:49,955 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:10:49,955 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:10:49,956 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:10:49,956 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:10:49,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1631363206, now seen corresponding path program 1 times [2025-04-14 00:10:49,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:10:49,957 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95879779] [2025-04-14 00:10:49,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:10:49,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:10:49,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-14 00:10:49,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-14 00:10:49,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:10:49,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:10:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:10:50,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:10:50,113 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95879779] [2025-04-14 00:10:50,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95879779] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:10:50,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:10:50,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:10:50,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928325784] [2025-04-14 00:10:50,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:10:50,116 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:10:50,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:10:50,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:10:50,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:10:50,117 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2025-04-14 00:10:50,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 102 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) [2025-04-14 00:10:50,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:10:50,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2025-04-14 00:10:50,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:10:50,457 INFO L116 PetriNetUnfolderBase]: 2091/3177 cut-off events. [2025-04-14 00:10:50,458 INFO L117 PetriNetUnfolderBase]: For 646/646 co-relation queries the response was YES. [2025-04-14 00:10:50,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7437 conditions, 3177 events. 2091/3177 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 15189 event pairs, 427 based on Foata normal form. 172/3342 useless extension candidates. Maximal degree in co-relation 7425. Up to 1128 conditions per place. [2025-04-14 00:10:50,475 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 73 selfloop transitions, 8 changer transitions 1/85 dead transitions. [2025-04-14 00:10:50,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 85 transitions, 389 flow [2025-04-14 00:10:50,476 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:10:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:10:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2025-04-14 00:10:50,479 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6514285714285715 [2025-04-14 00:10:50,479 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 102 flow. Second operand 5 states and 114 transitions. [2025-04-14 00:10:50,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 85 transitions, 389 flow [2025-04-14 00:10:50,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 85 transitions, 379 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-14 00:10:50,486 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 142 flow [2025-04-14 00:10:50,486 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2025-04-14 00:10:50,486 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2025-04-14 00:10:50,487 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 142 flow [2025-04-14 00:10:50,487 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) [2025-04-14 00:10:50,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:10:50,487 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:10:50,487 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:10:50,487 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:10:50,488 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:10:50,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1765479039, now seen corresponding path program 1 times [2025-04-14 00:10:50,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:10:50,488 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495261929] [2025-04-14 00:10:50,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:10:50,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:10:50,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 00:10:50,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 00:10:50,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:10:50,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:10:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:10:50,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:10:50,627 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495261929] [2025-04-14 00:10:50,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495261929] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:10:50,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:10:50,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 00:10:50,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913393804] [2025-04-14 00:10:50,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:10:50,628 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:10:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:10:50,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:10:50,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:10:50,629 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2025-04-14 00:10:50,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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) [2025-04-14 00:10:50,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:10:50,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2025-04-14 00:10:50,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:10:50,866 INFO L116 PetriNetUnfolderBase]: 1343/2057 cut-off events. [2025-04-14 00:10:50,867 INFO L117 PetriNetUnfolderBase]: For 1232/1232 co-relation queries the response was YES. [2025-04-14 00:10:50,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5159 conditions, 2057 events. 1343/2057 cut-off events. For 1232/1232 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9222 event pairs, 385 based on Foata normal form. 60/2110 useless extension candidates. Maximal degree in co-relation 5145. Up to 788 conditions per place. [2025-04-14 00:10:50,877 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 61 selfloop transitions, 11 changer transitions 1/76 dead transitions. [2025-04-14 00:10:50,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 376 flow [2025-04-14 00:10:50,877 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:10:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:10:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2025-04-14 00:10:50,878 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2025-04-14 00:10:50,878 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 142 flow. Second operand 6 states and 111 transitions. [2025-04-14 00:10:50,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 76 transitions, 376 flow [2025-04-14 00:10:50,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 351 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-04-14 00:10:50,891 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 156 flow [2025-04-14 00:10:50,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2025-04-14 00:10:50,892 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2025-04-14 00:10:50,892 INFO L485 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 156 flow [2025-04-14 00:10:50,892 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 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) [2025-04-14 00:10:50,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:10:50,892 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:10:50,892 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:10:50,893 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:10:50,893 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:10:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash -584462208, now seen corresponding path program 1 times [2025-04-14 00:10:50,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:10:50,893 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845146627] [2025-04-14 00:10:50,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:10:50,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:10:50,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 00:10:50,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 00:10:50,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:10:50,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:10:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:10:51,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:10:51,085 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845146627] [2025-04-14 00:10:51,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845146627] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:10:51,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:10:51,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 00:10:51,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119064180] [2025-04-14 00:10:51,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:10:51,085 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:10:51,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:10:51,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:10:51,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:10:51,086 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2025-04-14 00:10:51,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2025-04-14 00:10:51,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:10:51,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2025-04-14 00:10:51,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:10:51,496 INFO L116 PetriNetUnfolderBase]: 2295/3493 cut-off events. [2025-04-14 00:10:51,496 INFO L117 PetriNetUnfolderBase]: For 2552/2552 co-relation queries the response was YES. [2025-04-14 00:10:51,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8900 conditions, 3493 events. 2295/3493 cut-off events. For 2552/2552 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17086 event pairs, 102 based on Foata normal form. 16/3509 useless extension candidates. Maximal degree in co-relation 8885. Up to 1407 conditions per place. [2025-04-14 00:10:51,506 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 0 selfloop transitions, 0 changer transitions 122/122 dead transitions. [2025-04-14 00:10:51,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 122 transitions, 730 flow [2025-04-14 00:10:51,507 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 00:10:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 00:10:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2025-04-14 00:10:51,508 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2025-04-14 00:10:51,508 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 156 flow. Second operand 8 states and 150 transitions. [2025-04-14 00:10:51,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 122 transitions, 730 flow [2025-04-14 00:10:51,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 122 transitions, 565 flow, removed 20 selfloop flow, removed 8 redundant places. [2025-04-14 00:10:51,519 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2025-04-14 00:10:51,519 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2025-04-14 00:10:51,521 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2025-04-14 00:10:51,521 INFO L485 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2025-04-14 00:10:51,521 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2025-04-14 00:10:51,523 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-14 00:10:51,523 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-14 00:10:51,523 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-14 00:10:51,524 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-14 00:10:51,524 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 00:10:51,524 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-04-14 00:10:51,528 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:10:51,528 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:10:51,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:10:51 BasicIcfg [2025-04-14 00:10:51,534 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:10:51,534 INFO L158 Benchmark]: Toolchain (without parser) took 3674.29ms. Allocated memory was 142.6MB in the beginning and 381.7MB in the end (delta: 239.1MB). Free memory was 99.6MB in the beginning and 192.2MB in the end (delta: -92.6MB). Peak memory consumption was 146.1MB. Max. memory is 8.0GB. [2025-04-14 00:10:51,534 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:10:51,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.67ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 76.6MB in the end (delta: 23.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2025-04-14 00:10:51,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.31ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 74.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:10:51,535 INFO L158 Benchmark]: Boogie Preprocessor took 28.65ms. Allocated memory is still 142.6MB. Free memory was 74.2MB in the beginning and 72.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:10:51,535 INFO L158 Benchmark]: IcfgBuilder took 428.79ms. Allocated memory is still 142.6MB. Free memory was 72.7MB in the beginning and 50.0MB in the end (delta: 22.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-14 00:10:51,535 INFO L158 Benchmark]: TraceAbstraction took 2745.10ms. Allocated memory was 142.6MB in the beginning and 381.7MB in the end (delta: 239.1MB). Free memory was 49.5MB in the beginning and 192.2MB in the end (delta: -142.7MB). Peak memory consumption was 100.0MB. Max. memory is 8.0GB. [2025-04-14 00:10:51,536 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 155.2MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 437.67ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 76.6MB in the end (delta: 23.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.31ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 74.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 28.65ms. Allocated memory is still 142.6MB. Free memory was 74.2MB in the beginning and 72.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 428.79ms. Allocated memory is still 142.6MB. Free memory was 72.7MB in the beginning and 50.0MB in the end (delta: 22.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 2745.10ms. Allocated memory was 142.6MB in the beginning and 381.7MB in the end (delta: 239.1MB). Free memory was 49.5MB in the beginning and 192.2MB in the end (delta: -142.7MB). Peak memory consumption was 100.0MB. 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 7 procedures, 61 locations, 57 edges, 4 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: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 310 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 310 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 488 IncrementalHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 0 mSDtfsCounter, 488 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=3, InterpolantAutomatonStates: 23, 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, 0.7s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 293 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2025-04-14 00:10:51,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...