/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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:37:01,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:37:01,295 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 19:37:01,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:37:01,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:37:01,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:37:01,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:37:01,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:37:01,323 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:37:01,323 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:37:01,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:37:01,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:37:01,323 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:37:01,323 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:37:01,323 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:37:01,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:37:01,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:37:01,323 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:37:01,324 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:37:01,324 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:37:01,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:37:01,325 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:37:01,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:37:01,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:37:01,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:37:01,325 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:37:01,325 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:37:01,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:37:01,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:37:01,325 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:37:01,325 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:37:01,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:37:01,325 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 19:37:01,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:37:01,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:37:01,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:37:01,566 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:37:01,566 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:37:01,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-13 19:37:02,874 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59bc1b4fa/4e0c2606e1f54972ae9b8d04630daf26/FLAG64b509ee6 [2025-04-13 19:37:03,133 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:37:03,134 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-13 19:37:03,146 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59bc1b4fa/4e0c2606e1f54972ae9b8d04630daf26/FLAG64b509ee6 [2025-04-13 19:37:04,026 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59bc1b4fa/4e0c2606e1f54972ae9b8d04630daf26 [2025-04-13 19:37:04,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:37:04,029 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:37:04,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:37:04,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:37:04,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:37:04,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d1c5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04, skipping insertion in model container [2025-04-13 19:37:04,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,066 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:37:04,226 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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-04-13 19:37:04,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:37:04,410 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:37:04,435 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/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-04-13 19:37:04,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:37:04,486 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:37:04,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04 WrapperNode [2025-04-13 19:37:04,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:37:04,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:37:04,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:37:04,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:37:04,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,515 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2025-04-13 19:37:04,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:37:04,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:37:04,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:37:04,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:37:04,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,525 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,542 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 19:37:04,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,546 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,551 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:37:04,552 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:37:04,552 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:37:04,552 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:37:04,553 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (1/1) ... [2025-04-13 19:37:04,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:37:04,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:37:04,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 19:37:04,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 19:37:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 19:37:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:37:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-13 19:37:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-13 19:37:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-13 19:37:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-13 19:37:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-04-13 19:37:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-04-13 19:37:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:37:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 19:37:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:37:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:37:04,599 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 19:37:04,673 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:37:04,674 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:37:04,793 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:37:04,793 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:37:04,794 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:37:04,867 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:37:04,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:37:04 BoogieIcfgContainer [2025-04-13 19:37:04,867 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:37:04,869 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:37:04,869 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:37:04,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:37:04,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:37:04" (1/3) ... [2025-04-13 19:37:04,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1affc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:37:04, skipping insertion in model container [2025-04-13 19:37:04,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:04" (2/3) ... [2025-04-13 19:37:04,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1affc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:37:04, skipping insertion in model container [2025-04-13 19:37:04,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:37:04" (3/3) ... [2025-04-13 19:37:04,873 INFO L128 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-04-13 19:37:04,884 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:37:04,886 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 4 procedures, 35 locations, 31 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 19:37:04,886 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:37:04,921 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 19:37:04,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 34 transitions, 80 flow [2025-04-13 19:37:04,969 INFO L116 PetriNetUnfolderBase]: 0/31 cut-off events. [2025-04-13 19:37:04,970 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:37:04,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-13 19:37:04,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 34 transitions, 80 flow [2025-04-13 19:37:04,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 30 transitions, 69 flow [2025-04-13 19:37:04,982 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:37:04,990 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;@469572ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:37:04,990 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 19:37:05,002 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:37:05,002 INFO L116 PetriNetUnfolderBase]: 0/28 cut-off events. [2025-04-13 19:37:05,003 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:37:05,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:05,003 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:37:05,003 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)] === [2025-04-13 19:37:05,009 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1458444095, now seen corresponding path program 1 times [2025-04-13 19:37:05,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:05,014 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685418085] [2025-04-13 19:37:05,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:05,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:05,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 19:37:05,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 19:37:05,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:05,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:37:05,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:05,440 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685418085] [2025-04-13 19:37:05,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685418085] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:05,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:05,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:37:05,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761289972] [2025-04-13 19:37:05,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:05,446 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:37:05,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:05,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:37:05,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:37:05,470 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 34 [2025-04-13 19:37:05,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:05,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:05,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 34 [2025-04-13 19:37:05,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:05,609 INFO L116 PetriNetUnfolderBase]: 291/539 cut-off events. [2025-04-13 19:37:05,609 INFO L117 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-04-13 19:37:05,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 539 events. 291/539 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2823 event pairs, 58 based on Foata normal form. 27/556 useless extension candidates. Maximal degree in co-relation 1034. Up to 236 conditions per place. [2025-04-13 19:37:05,616 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 25 selfloop transitions, 5 changer transitions 1/45 dead transitions. [2025-04-13 19:37:05,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 167 flow [2025-04-13 19:37:05,618 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 19:37:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 19:37:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-04-13 19:37:05,627 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7426470588235294 [2025-04-13 19:37:05,628 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 69 flow. Second operand 4 states and 101 transitions. [2025-04-13 19:37:05,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 167 flow [2025-04-13 19:37:05,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-13 19:37:05,638 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 100 flow [2025-04-13 19:37:05,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2025-04-13 19:37:05,644 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2025-04-13 19:37:05,645 INFO L485 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 100 flow [2025-04-13 19:37:05,646 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:05,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:05,646 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:37:05,646 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:37:05,647 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)] === [2025-04-13 19:37:05,647 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:05,647 INFO L85 PathProgramCache]: Analyzing trace with hash 728441133, now seen corresponding path program 1 times [2025-04-13 19:37:05,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:05,647 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166436323] [2025-04-13 19:37:05,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:05,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:05,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 19:37:05,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 19:37:05,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:05,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:37:05,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:05,829 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166436323] [2025-04-13 19:37:05,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166436323] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:05,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:05,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:37:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263074186] [2025-04-13 19:37:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:05,830 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:37:05,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:05,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:37:05,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:37:05,836 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 34 [2025-04-13 19:37:05,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:05,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:05,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 34 [2025-04-13 19:37:05,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:05,990 INFO L116 PetriNetUnfolderBase]: 249/466 cut-off events. [2025-04-13 19:37:05,991 INFO L117 PetriNetUnfolderBase]: For 173/176 co-relation queries the response was YES. [2025-04-13 19:37:05,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 466 events. 249/466 cut-off events. For 173/176 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2172 event pairs, 15 based on Foata normal form. 28/485 useless extension candidates. Maximal degree in co-relation 1132. Up to 188 conditions per place. [2025-04-13 19:37:05,997 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 31 selfloop transitions, 8 changer transitions 1/54 dead transitions. [2025-04-13 19:37:05,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 243 flow [2025-04-13 19:37:05,997 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 19:37:05,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-13 19:37:05,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2025-04-13 19:37:05,998 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7470588235294118 [2025-04-13 19:37:05,998 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 100 flow. Second operand 5 states and 127 transitions. [2025-04-13 19:37:05,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 243 flow [2025-04-13 19:37:05,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 233 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-13 19:37:06,000 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 140 flow [2025-04-13 19:37:06,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2025-04-13 19:37:06,000 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2025-04-13 19:37:06,001 INFO L485 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 140 flow [2025-04-13 19:37:06,001 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:06,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:06,001 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] [2025-04-13 19:37:06,001 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:37:06,001 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)] === [2025-04-13 19:37:06,002 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:06,002 INFO L85 PathProgramCache]: Analyzing trace with hash 7943637, now seen corresponding path program 1 times [2025-04-13 19:37:06,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:06,002 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411317591] [2025-04-13 19:37:06,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:06,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:06,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 19:37:06,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 19:37:06,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:06,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:37:06,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:06,154 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411317591] [2025-04-13 19:37:06,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411317591] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:06,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:06,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 19:37:06,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929425975] [2025-04-13 19:37:06,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:06,154 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:37:06,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:06,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:37:06,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:37:06,159 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 34 [2025-04-13 19:37:06,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 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 19:37:06,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:06,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 34 [2025-04-13 19:37:06,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:06,279 INFO L116 PetriNetUnfolderBase]: 174/325 cut-off events. [2025-04-13 19:37:06,279 INFO L117 PetriNetUnfolderBase]: For 358/364 co-relation queries the response was YES. [2025-04-13 19:37:06,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 325 events. 174/325 cut-off events. For 358/364 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1190 event pairs, 6 based on Foata normal form. 24/340 useless extension candidates. Maximal degree in co-relation 910. Up to 108 conditions per place. [2025-04-13 19:37:06,283 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 29 selfloop transitions, 11 changer transitions 1/55 dead transitions. [2025-04-13 19:37:06,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 270 flow [2025-04-13 19:37:06,284 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:37:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:37:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2025-04-13 19:37:06,286 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7107843137254902 [2025-04-13 19:37:06,286 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 140 flow. Second operand 6 states and 145 transitions. [2025-04-13 19:37:06,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 270 flow [2025-04-13 19:37:06,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 245 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-04-13 19:37:06,288 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 154 flow [2025-04-13 19:37:06,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2025-04-13 19:37:06,291 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2025-04-13 19:37:06,291 INFO L485 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 154 flow [2025-04-13 19:37:06,292 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 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 19:37:06,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:06,292 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] [2025-04-13 19:37:06,292 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:37:06,292 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)] === [2025-04-13 19:37:06,293 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:06,293 INFO L85 PathProgramCache]: Analyzing trace with hash -5963756, now seen corresponding path program 1 times [2025-04-13 19:37:06,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:06,293 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930499691] [2025-04-13 19:37:06,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:06,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:06,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 19:37:06,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 19:37:06,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:06,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:37:06,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:06,408 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930499691] [2025-04-13 19:37:06,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930499691] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:06,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:06,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:37:06,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678025622] [2025-04-13 19:37:06,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:06,408 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 19:37:06,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:06,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 19:37:06,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 19:37:06,416 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2025-04-13 19:37:06,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:06,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:06,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2025-04-13 19:37:06,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:06,504 INFO L116 PetriNetUnfolderBase]: 192/432 cut-off events. [2025-04-13 19:37:06,504 INFO L117 PetriNetUnfolderBase]: For 273/279 co-relation queries the response was YES. [2025-04-13 19:37:06,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 432 events. 192/432 cut-off events. For 273/279 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2142 event pairs, 100 based on Foata normal form. 8/383 useless extension candidates. Maximal degree in co-relation 1030. Up to 190 conditions per place. [2025-04-13 19:37:06,506 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 16 selfloop transitions, 2 changer transitions 7/46 dead transitions. [2025-04-13 19:37:06,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 232 flow [2025-04-13 19:37:06,506 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 19:37:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-13 19:37:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-04-13 19:37:06,507 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7205882352941176 [2025-04-13 19:37:06,507 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 154 flow. Second operand 4 states and 98 transitions. [2025-04-13 19:37:06,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 232 flow [2025-04-13 19:37:06,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 168 flow, removed 14 selfloop flow, removed 8 redundant places. [2025-04-13 19:37:06,509 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 108 flow [2025-04-13 19:37:06,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2025-04-13 19:37:06,512 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2025-04-13 19:37:06,512 INFO L485 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 108 flow [2025-04-13 19:37:06,512 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:06,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:06,512 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] [2025-04-13 19:37:06,512 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:37:06,513 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:37:06,513 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:06,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1739318040, now seen corresponding path program 2 times [2025-04-13 19:37:06,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:06,513 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622664960] [2025-04-13 19:37:06,513 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:37:06,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:06,522 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 1 equivalence classes. [2025-04-13 19:37:06,531 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 19:37:06,531 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:37:06,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:37:06,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:06,646 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622664960] [2025-04-13 19:37:06,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622664960] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:06,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:06,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:37:06,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747415180] [2025-04-13 19:37:06,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:06,646 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 19:37:06,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:06,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 19:37:06,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 19:37:06,661 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 34 [2025-04-13 19:37:06,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:06,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:06,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 34 [2025-04-13 19:37:06,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:06,754 INFO L116 PetriNetUnfolderBase]: 254/540 cut-off events. [2025-04-13 19:37:06,755 INFO L117 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2025-04-13 19:37:06,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 540 events. 254/540 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2661 event pairs, 82 based on Foata normal form. 8/510 useless extension candidates. Maximal degree in co-relation 1113. Up to 166 conditions per place. [2025-04-13 19:37:06,758 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 21 selfloop transitions, 5 changer transitions 16/60 dead transitions. [2025-04-13 19:37:06,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 256 flow [2025-04-13 19:37:06,759 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:37:06,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:37:06,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2025-04-13 19:37:06,760 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6519607843137255 [2025-04-13 19:37:06,761 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 108 flow. Second operand 6 states and 133 transitions. [2025-04-13 19:37:06,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 256 flow [2025-04-13 19:37:06,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 238 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-04-13 19:37:06,763 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 116 flow [2025-04-13 19:37:06,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2025-04-13 19:37:06,763 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2025-04-13 19:37:06,763 INFO L485 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 116 flow [2025-04-13 19:37:06,764 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:06,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:06,764 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] [2025-04-13 19:37:06,764 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:37:06,764 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:37:06,764 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1766499116, now seen corresponding path program 3 times [2025-04-13 19:37:06,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:06,765 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913902764] [2025-04-13 19:37:06,765 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:37:06,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:06,773 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 1 equivalence classes. [2025-04-13 19:37:06,778 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 19:37:06,778 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 19:37:06,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:37:06,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:06,889 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913902764] [2025-04-13 19:37:06,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913902764] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:06,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:06,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:37:06,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181992520] [2025-04-13 19:37:06,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:06,889 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:37:06,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:06,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:37:06,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:37:06,900 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 34 [2025-04-13 19:37:06,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:06,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:06,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 34 [2025-04-13 19:37:06,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:06,959 INFO L116 PetriNetUnfolderBase]: 108/256 cut-off events. [2025-04-13 19:37:06,959 INFO L117 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2025-04-13 19:37:06,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 256 events. 108/256 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1026 event pairs, 38 based on Foata normal form. 8/249 useless extension candidates. Maximal degree in co-relation 523. Up to 117 conditions per place. [2025-04-13 19:37:06,960 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2025-04-13 19:37:06,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 184 flow [2025-04-13 19:37:06,960 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:37:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:37:06,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2025-04-13 19:37:06,961 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2025-04-13 19:37:06,961 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 116 flow. Second operand 6 states and 117 transitions. [2025-04-13 19:37:06,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 184 flow [2025-04-13 19:37:06,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 172 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-04-13 19:37:06,962 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2025-04-13 19:37:06,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2025-04-13 19:37:06,962 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2025-04-13 19:37:06,962 INFO L485 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2025-04-13 19:37:06,963 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:37:06,964 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-13 19:37:06,964 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-13 19:37:06,965 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 19:37:06,965 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-13 19:37:06,965 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 19:37:06,965 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-04-13 19:37:06,967 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:37:06,967 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:37:06,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:37:06 BasicIcfg [2025-04-13 19:37:06,970 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:37:06,970 INFO L158 Benchmark]: Toolchain (without parser) took 2941.80ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 83.5MB in the end (delta: 14.8MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. [2025-04-13 19:37:06,970 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:37:06,971 INFO L158 Benchmark]: CACSL2BoogieTranslator took 456.53ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 74.3MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 19:37:06,971 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.99ms. Allocated memory is still 142.6MB. Free memory was 74.3MB in the beginning and 72.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:37:06,971 INFO L158 Benchmark]: Boogie Preprocessor took 36.12ms. Allocated memory is still 142.6MB. Free memory was 72.5MB in the beginning and 71.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:37:06,971 INFO L158 Benchmark]: RCFGBuilder took 315.16ms. Allocated memory is still 142.6MB. Free memory was 70.2MB in the beginning and 49.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 19:37:06,971 INFO L158 Benchmark]: TraceAbstraction took 2101.26ms. Allocated memory is still 142.6MB. Free memory was 49.3MB in the beginning and 83.5MB in the end (delta: -34.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:37:06,972 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 456.53ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 74.3MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.99ms. Allocated memory is still 142.6MB. Free memory was 74.3MB in the beginning and 72.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 36.12ms. Allocated memory is still 142.6MB. Free memory was 72.5MB in the beginning and 71.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 315.16ms. Allocated memory is still 142.6MB. Free memory was 70.2MB in the beginning and 49.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2101.26ms. Allocated memory is still 142.6MB. Free memory was 49.3MB in the beginning and 83.5MB in the end (delta: -34.3MB). There was no memory consumed. 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, 59 locations, 55 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: 2.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 189 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 178 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 343 IncrementalHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 14 mSDtfsCounter, 343 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=3, InterpolantAutomatonStates: 31, 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, 0.9s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 502 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 19:37:06,985 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...