/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:35:03,006 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:35:03,062 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 19:35:03,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:35:03,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:35:03,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:35:03,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:35:03,091 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:35:03,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:35:03,091 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:35:03,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:35:03,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:35:03,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:35:03,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:35:03,092 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:35:03,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:35:03,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:35:03,092 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:35:03,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:35:03,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:35:03,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:35:03,094 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:35:03,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:35:03,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:35:03,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:35:03,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:35:03,095 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:35:03,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:35:03,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:35:03,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:35:03,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:35:03,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:35:03,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:35:03,095 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 19:35:03,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:35:03,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:35:03,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:35:03,324 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:35:03,325 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:35:03,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2025-04-13 19:35:04,648 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d464b352/68f78de5f2254e338be4f074701f8bdd/FLAG5ec11b966 [2025-04-13 19:35:04,888 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:35:04,889 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2025-04-13 19:35:04,908 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d464b352/68f78de5f2254e338be4f074701f8bdd/FLAG5ec11b966 [2025-04-13 19:35:05,699 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d464b352/68f78de5f2254e338be4f074701f8bdd [2025-04-13 19:35:05,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:35:05,702 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:35:05,703 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:35:05,703 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:35:05,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:35:05,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:35:05" (1/1) ... [2025-04-13 19:35:05,708 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6add8402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:05, skipping insertion in model container [2025-04-13 19:35:05,708 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:35:05" (1/1) ... [2025-04-13 19:35:05,744 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:35:05,914 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/rfi000_tso.i[944,957] [2025-04-13 19:35:06,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:35:06,138 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:35:06,153 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/rfi000_tso.i[944,957] [2025-04-13 19:35:06,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:35:06,225 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:35:06,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06 WrapperNode [2025-04-13 19:35:06,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:35:06,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:35:06,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:35:06,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:35:06,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,267 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2025-04-13 19:35:06,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:35:06,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:35:06,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:35:06,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:35:06,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,310 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 19:35:06,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,316 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:35:06,325 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:35:06,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:35:06,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:35:06,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (1/1) ... [2025-04-13 19:35:06,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:35:06,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:35:06,352 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 19:35:06,355 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 19:35:06,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 19:35:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:35:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-13 19:35:06,373 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-13 19:35:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-13 19:35:06,373 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-13 19:35:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:35:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 19:35:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:35:06,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:35:06,374 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 19:35:06,475 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:35:06,476 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:35:06,743 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:35:06,744 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:35:06,744 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:35:06,978 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:35:06,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:35:06 BoogieIcfgContainer [2025-04-13 19:35:06,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:35:06,981 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:35:06,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:35:06,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:35:06,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:35:05" (1/3) ... [2025-04-13 19:35:06,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234a88a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:35:06, skipping insertion in model container [2025-04-13 19:35:06,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:35:06" (2/3) ... [2025-04-13 19:35:06,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234a88a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:35:06, skipping insertion in model container [2025-04-13 19:35:06,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:35:06" (3/3) ... [2025-04-13 19:35:06,987 INFO L128 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2025-04-13 19:35:06,998 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:35:06,999 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rfi000_tso.i that has 3 procedures, 29 locations, 26 edges, 1 initial locations, 0 loop locations, and 2 error locations. [2025-04-13 19:35:06,999 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:35:07,060 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:35:07,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 28 transitions, 64 flow [2025-04-13 19:35:07,109 INFO L116 PetriNetUnfolderBase]: 0/26 cut-off events. [2025-04-13 19:35:07,110 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:35:07,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 26 events. 0/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-13 19:35:07,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 28 transitions, 64 flow [2025-04-13 19:35:07,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 26 transitions, 58 flow [2025-04-13 19:35:07,124 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:35:07,134 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;@1fd68c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:35:07,134 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 19:35:07,142 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:35:07,142 INFO L116 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-04-13 19:35:07,142 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:35:07,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:35:07,143 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:35:07,143 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 19:35:07,148 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:35:07,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1122665224, now seen corresponding path program 1 times [2025-04-13 19:35:07,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:35:07,156 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677508055] [2025-04-13 19:35:07,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:35:07,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:35:07,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-13 19:35:07,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-13 19:35:07,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:35:07,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:35:07,543 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 19:35:07,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:35:07,544 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677508055] [2025-04-13 19:35:07,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677508055] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:35:07,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:35:07,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:35:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582574886] [2025-04-13 19:35:07,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:35:07,550 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 19:35:07,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:35:07,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 19:35:07,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 19:35:07,568 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 28 [2025-04-13 19:35:07,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 19:35:07,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:35:07,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 28 [2025-04-13 19:35:07,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:35:07,752 INFO L116 PetriNetUnfolderBase]: 176/343 cut-off events. [2025-04-13 19:35:07,753 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:35:07,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 343 events. 176/343 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1684 event pairs, 16 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 654. Up to 266 conditions per place. [2025-04-13 19:35:07,758 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 21 selfloop transitions, 2 changer transitions 2/33 dead transitions. [2025-04-13 19:35:07,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 122 flow [2025-04-13 19:35:07,761 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 19:35:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 19:35:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2025-04-13 19:35:07,768 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-04-13 19:35:07,769 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 58 flow. Second operand 3 states and 56 transitions. [2025-04-13 19:35:07,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 122 flow [2025-04-13 19:35:07,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 19:35:07,774 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 56 flow [2025-04-13 19:35:07,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2025-04-13 19:35:07,780 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2025-04-13 19:35:07,780 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 56 flow [2025-04-13 19:35:07,781 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 19:35:07,781 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:35:07,781 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:35:07,781 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:35:07,781 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 19:35:07,782 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:35:07,782 INFO L85 PathProgramCache]: Analyzing trace with hash -480628405, now seen corresponding path program 1 times [2025-04-13 19:35:07,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:35:07,782 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839686106] [2025-04-13 19:35:07,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:35:07,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:35:07,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 19:35:07,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:35:07,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:35:07,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:35:08,050 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 19:35:08,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:35:08,051 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839686106] [2025-04-13 19:35:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839686106] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:35:08,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:35:08,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:35:08,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830739484] [2025-04-13 19:35:08,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:35:08,052 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:35:08,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:35:08,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:35:08,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:35:08,064 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2025-04-13 19:35:08,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:35:08,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:35:08,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2025-04-13 19:35:08,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:35:08,231 INFO L116 PetriNetUnfolderBase]: 221/411 cut-off events. [2025-04-13 19:35:08,232 INFO L117 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2025-04-13 19:35:08,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 411 events. 221/411 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1817 event pairs, 38 based on Foata normal form. 28/435 useless extension candidates. Maximal degree in co-relation 841. Up to 216 conditions per place. [2025-04-13 19:35:08,236 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 34 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2025-04-13 19:35:08,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 180 flow [2025-04-13 19:35:08,238 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 19:35:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 19:35:08,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-04-13 19:35:08,239 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2025-04-13 19:35:08,239 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 56 flow. Second operand 4 states and 69 transitions. [2025-04-13 19:35:08,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 180 flow [2025-04-13 19:35:08,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 19:35:08,240 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 78 flow [2025-04-13 19:35:08,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2025-04-13 19:35:08,241 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2025-04-13 19:35:08,241 INFO L485 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 78 flow [2025-04-13 19:35:08,241 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:35:08,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:35:08,242 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:35:08,242 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:35:08,242 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 19:35:08,243 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:35:08,243 INFO L85 PathProgramCache]: Analyzing trace with hash 802670601, now seen corresponding path program 1 times [2025-04-13 19:35:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:35:08,243 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569512389] [2025-04-13 19:35:08,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:35:08,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:35:08,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 19:35:08,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 19:35:08,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:35:08,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:35:08,528 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 19:35:08,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:35:08,528 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569512389] [2025-04-13 19:35:08,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569512389] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:35:08,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:35:08,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:35:08,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846178051] [2025-04-13 19:35:08,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:35:08,529 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:35:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:35:08,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:35:08,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:35:08,534 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2025-04-13 19:35:08,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 19:35:08,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:35:08,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2025-04-13 19:35:08,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:35:08,677 INFO L116 PetriNetUnfolderBase]: 110/220 cut-off events. [2025-04-13 19:35:08,677 INFO L117 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2025-04-13 19:35:08,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 220 events. 110/220 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 765 event pairs, 26 based on Foata normal form. 18/234 useless extension candidates. Maximal degree in co-relation 525. Up to 101 conditions per place. [2025-04-13 19:35:08,678 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 28 selfloop transitions, 6 changer transitions 1/40 dead transitions. [2025-04-13 19:35:08,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 181 flow [2025-04-13 19:35:08,679 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:35:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:35:08,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2025-04-13 19:35:08,680 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2025-04-13 19:35:08,680 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 78 flow. Second operand 5 states and 72 transitions. [2025-04-13 19:35:08,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 181 flow [2025-04-13 19:35:08,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 172 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-13 19:35:08,682 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 94 flow [2025-04-13 19:35:08,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2025-04-13 19:35:08,683 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2025-04-13 19:35:08,683 INFO L485 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 94 flow [2025-04-13 19:35:08,683 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 19:35:08,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:35:08,683 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] [2025-04-13 19:35:08,684 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:35:08,684 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 19:35:08,684 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:35:08,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1413873793, now seen corresponding path program 1 times [2025-04-13 19:35:08,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:35:08,684 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213377090] [2025-04-13 19:35:08,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:35:08,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:35:08,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-13 19:35:08,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 19:35:08,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:35:08,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:35:11,286 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 19:35:11,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:35:11,286 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213377090] [2025-04-13 19:35:11,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213377090] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:35:11,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:35:11,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-13 19:35:11,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676376264] [2025-04-13 19:35:11,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:35:11,287 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 19:35:11,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:35:11,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 19:35:11,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-04-13 19:35:11,296 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2025-04-13 19:35:11,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 94 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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 19:35:11,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:35:11,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2025-04-13 19:35:11,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:35:11,709 INFO L116 PetriNetUnfolderBase]: 122/286 cut-off events. [2025-04-13 19:35:11,709 INFO L117 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2025-04-13 19:35:11,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 286 events. 122/286 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1154 event pairs, 24 based on Foata normal form. 4/285 useless extension candidates. Maximal degree in co-relation 655. Up to 98 conditions per place. [2025-04-13 19:35:11,711 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 22 selfloop transitions, 11 changer transitions 12/54 dead transitions. [2025-04-13 19:35:11,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 248 flow [2025-04-13 19:35:11,712 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 19:35:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-13 19:35:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2025-04-13 19:35:11,713 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2025-04-13 19:35:11,714 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 94 flow. Second operand 9 states and 127 transitions. [2025-04-13 19:35:11,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 248 flow [2025-04-13 19:35:11,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 54 transitions, 214 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-04-13 19:35:11,716 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 134 flow [2025-04-13 19:35:11,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2025-04-13 19:35:11,716 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2025-04-13 19:35:11,716 INFO L485 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 134 flow [2025-04-13 19:35:11,716 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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 19:35:11,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:35:11,716 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] [2025-04-13 19:35:11,717 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:35:11,717 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 19:35:11,717 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:35:11,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1418049537, now seen corresponding path program 2 times [2025-04-13 19:35:11,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:35:11,717 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435513470] [2025-04-13 19:35:11,717 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:35:11,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:35:11,730 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 1 equivalence classes. [2025-04-13 19:35:11,793 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 19:35:11,793 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:35:11,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:35:12,262 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 19:35:12,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:35:12,262 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435513470] [2025-04-13 19:35:12,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435513470] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:35:12,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:35:12,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:35:12,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389185971] [2025-04-13 19:35:12,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:35:12,262 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:35:12,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:35:12,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:35:12,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:35:12,267 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2025-04-13 19:35:12,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:35:12,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:35:12,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2025-04-13 19:35:12,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:35:12,426 INFO L116 PetriNetUnfolderBase]: 234/514 cut-off events. [2025-04-13 19:35:12,426 INFO L117 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2025-04-13 19:35:12,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 514 events. 234/514 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2532 event pairs, 52 based on Foata normal form. 4/508 useless extension candidates. Maximal degree in co-relation 1277. Up to 227 conditions per place. [2025-04-13 19:35:12,428 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 21 selfloop transitions, 4 changer transitions 27/59 dead transitions. [2025-04-13 19:35:12,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 327 flow [2025-04-13 19:35:12,430 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:35:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:35:12,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2025-04-13 19:35:12,431 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2025-04-13 19:35:12,431 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 134 flow. Second operand 5 states and 76 transitions. [2025-04-13 19:35:12,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 327 flow [2025-04-13 19:35:12,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 324 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-13 19:35:12,433 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 100 flow [2025-04-13 19:35:12,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2025-04-13 19:35:12,436 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2025-04-13 19:35:12,437 INFO L485 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 100 flow [2025-04-13 19:35:12,437 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:35:12,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:35:12,437 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] [2025-04-13 19:35:12,437 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:35:12,437 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 19:35:12,437 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:35:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1408613081, now seen corresponding path program 3 times [2025-04-13 19:35:12,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:35:12,437 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029294435] [2025-04-13 19:35:12,438 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:35:12,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:35:12,449 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 1 equivalence classes. [2025-04-13 19:35:12,530 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 19:35:12,530 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 19:35:12,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:35:15,050 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 19:35:15,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:35:15,050 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029294435] [2025-04-13 19:35:15,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029294435] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:35:15,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:35:15,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-13 19:35:15,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014411369] [2025-04-13 19:35:15,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:35:15,051 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 19:35:15,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:35:15,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 19:35:15,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-04-13 19:35:15,055 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2025-04-13 19:35:15,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 100 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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 19:35:15,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:35:15,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2025-04-13 19:35:15,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:35:15,349 INFO L116 PetriNetUnfolderBase]: 33/98 cut-off events. [2025-04-13 19:35:15,349 INFO L117 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-04-13 19:35:15,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 98 events. 33/98 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 227 event pairs, 4 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 239. Up to 35 conditions per place. [2025-04-13 19:35:15,350 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2025-04-13 19:35:15,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 37 transitions, 182 flow [2025-04-13 19:35:15,351 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 19:35:15,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-13 19:35:15,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2025-04-13 19:35:15,352 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2025-04-13 19:35:15,352 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 100 flow. Second operand 9 states and 110 transitions. [2025-04-13 19:35:15,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 37 transitions, 182 flow [2025-04-13 19:35:15,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 159 flow, removed 2 selfloop flow, removed 9 redundant places. [2025-04-13 19:35:15,353 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2025-04-13 19:35:15,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2025-04-13 19:35:15,354 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2025-04-13 19:35:15,354 INFO L485 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2025-04-13 19:35:15,354 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 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 19:35:15,357 INFO L790 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-04-13 19:35:15,357 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-13 19:35:15,357 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-13 19:35:15,357 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-04-13 19:35:15,357 INFO L790 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 19:35:15,358 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 19:35:15,358 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-04-13 19:35:15,362 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:35:15,363 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:35:15,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:35:15 BasicIcfg [2025-04-13 19:35:15,367 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:35:15,367 INFO L158 Benchmark]: Toolchain (without parser) took 9665.40ms. Allocated memory was 125.8MB in the beginning and 578.8MB in the end (delta: 453.0MB). Free memory was 85.7MB in the beginning and 352.0MB in the end (delta: -266.4MB). Peak memory consumption was 184.6MB. Max. memory is 8.0GB. [2025-04-13 19:35:15,367 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 167.8MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:35:15,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 523.84ms. Allocated memory is still 125.8MB. Free memory was 85.7MB in the beginning and 57.1MB in the end (delta: 28.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 19:35:15,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.96ms. Allocated memory is still 125.8MB. Free memory was 57.1MB in the beginning and 53.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:35:15,368 INFO L158 Benchmark]: Boogie Preprocessor took 56.97ms. Allocated memory is still 125.8MB. Free memory was 53.6MB in the beginning and 49.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:35:15,368 INFO L158 Benchmark]: RCFGBuilder took 653.80ms. Allocated memory is still 125.8MB. Free memory was 49.4MB in the beginning and 30.5MB in the end (delta: 19.0MB). Peak memory consumption was 36.6MB. Max. memory is 8.0GB. [2025-04-13 19:35:15,368 INFO L158 Benchmark]: TraceAbstraction took 8386.23ms. Allocated memory was 125.8MB in the beginning and 578.8MB in the end (delta: 453.0MB). Free memory was 29.6MB in the beginning and 352.0MB in the end (delta: -322.4MB). Peak memory consumption was 127.1MB. Max. memory is 8.0GB. [2025-04-13 19:35:15,369 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 167.8MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 523.84ms. Allocated memory is still 125.8MB. Free memory was 85.7MB in the beginning and 57.1MB in the end (delta: 28.6MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.96ms. Allocated memory is still 125.8MB. Free memory was 57.1MB in the beginning and 53.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.97ms. Allocated memory is still 125.8MB. Free memory was 53.6MB in the beginning and 49.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 653.80ms. Allocated memory is still 125.8MB. Free memory was 49.4MB in the beginning and 30.5MB in the end (delta: 19.0MB). Peak memory consumption was 36.6MB. Max. memory is 8.0GB. * TraceAbstraction took 8386.23ms. Allocated memory was 125.8MB in the beginning and 578.8MB in the end (delta: 453.0MB). Free memory was 29.6MB in the beginning and 352.0MB in the end (delta: -322.4MB). Peak memory consumption was 127.1MB. 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 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 48 locations, 45 edges, 5 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: 8.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 563 IncrementalHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 7 mSDtfsCounter, 563 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=4, InterpolantAutomatonStates: 35, 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, 0.5s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 1117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 19:35:15,381 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...