/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread-theta/wsc.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 01:47:26,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 01:47:26,444 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-14 01:47:26,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 01:47:26,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 01:47:26,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 01:47:26,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 01:47:26,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 01:47:26,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 01:47:26,471 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 01:47:26,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 01:47:26,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 01:47:26,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 01:47:26,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 01:47:26,471 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 01:47:26,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 01:47:26,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 01:47:26,471 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 01:47:26,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 01:47:26,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 01:47:26,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 01:47:26,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 01:47:26,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 01:47:26,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 01:47:26,472 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 01:47:26,472 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 01:47:26,472 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 01:47:26,472 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 01:47:26,472 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 01:47:26,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:47:26,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:47:26,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:47:26,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:47:26,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 01:47:26,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:47:26,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:47:26,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:47:26,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:47:26,474 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 01:47:26,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 01:47:26,474 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 01:47:26,474 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 01:47:26,474 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 01:47:26,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 01:47:26,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 01:47:26,475 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 01:47:26,475 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 01:47:26,475 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 01:47:26,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 01:47:26,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 01:47:26,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 01:47:26,701 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 01:47:26,701 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 01:47:26,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-theta/wsc.i [2025-04-14 01:47:27,956 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59917ad23/e4393f80acdf47adb29e7ce2323541f6/FLAGbbc87b792 [2025-04-14 01:47:28,199 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 01:47:28,199 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/wsc.i [2025-04-14 01:47:28,211 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59917ad23/e4393f80acdf47adb29e7ce2323541f6/FLAGbbc87b792 [2025-04-14 01:47:29,007 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59917ad23/e4393f80acdf47adb29e7ce2323541f6 [2025-04-14 01:47:29,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 01:47:29,010 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 01:47:29,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 01:47:29,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 01:47:29,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 01:47:29,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263002f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29, skipping insertion in model container [2025-04-14 01:47:29,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,038 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 01:47:29,283 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-theta/wsc.i[33949,33962] [2025-04-14 01:47:29,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:47:29,296 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 01:47:29,363 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-theta/wsc.i[33949,33962] [2025-04-14 01:47:29,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:47:29,386 INFO L204 MainTranslator]: Completed translation [2025-04-14 01:47:29,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29 WrapperNode [2025-04-14 01:47:29,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 01:47:29,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 01:47:29,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 01:47:29,387 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 01:47:29,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,417 INFO L138 Inliner]: procedures = 171, calls = 26, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 122 [2025-04-14 01:47:29,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 01:47:29,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 01:47:29,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 01:47:29,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 01:47:29,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,427 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,438 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 0 writes are split as follows [0, 0]. [2025-04-14 01:47:29,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,442 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,444 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 01:47:29,448 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 01:47:29,448 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 01:47:29,448 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 01:47:29,449 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (1/1) ... [2025-04-14 01:47:29,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:47:29,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:47:29,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-14 01:47:29,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-14 01:47:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 01:47:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure f0 [2025-04-14 01:47:29,490 INFO L138 BoogieDeclarations]: Found implementation of procedure f0 [2025-04-14 01:47:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-04-14 01:47:29,490 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-04-14 01:47:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-04-14 01:47:29,490 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-04-14 01:47:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure f3 [2025-04-14 01:47:29,490 INFO L138 BoogieDeclarations]: Found implementation of procedure f3 [2025-04-14 01:47:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure f4 [2025-04-14 01:47:29,490 INFO L138 BoogieDeclarations]: Found implementation of procedure f4 [2025-04-14 01:47:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure f5 [2025-04-14 01:47:29,490 INFO L138 BoogieDeclarations]: Found implementation of procedure f5 [2025-04-14 01:47:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 01:47:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 01:47:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 01:47:29,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 01:47:29,492 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 01:47:29,595 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 01:47:29,596 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 01:47:29,784 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 01:47:29,785 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 01:47:29,785 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 01:47:29,904 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 01:47:29,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:47:29 BoogieIcfgContainer [2025-04-14 01:47:29,904 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 01:47:29,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 01:47:29,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 01:47:29,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 01:47:29,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 01:47:29" (1/3) ... [2025-04-14 01:47:29,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669d823f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:47:29, skipping insertion in model container [2025-04-14 01:47:29,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:47:29" (2/3) ... [2025-04-14 01:47:29,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669d823f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:47:29, skipping insertion in model container [2025-04-14 01:47:29,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:47:29" (3/3) ... [2025-04-14 01:47:29,911 INFO L128 eAbstractionObserver]: Analyzing ICFG wsc.i [2025-04-14 01:47:29,921 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 01:47:29,923 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG wsc.i that has 7 procedures, 50 locations, 43 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-14 01:47:29,923 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 01:47:29,979 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-04-14 01:47:30,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 49 transitions, 140 flow [2025-04-14 01:47:30,036 INFO L116 PetriNetUnfolderBase]: 0/43 cut-off events. [2025-04-14 01:47:30,040 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-14 01:47:30,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 43 events. 0/43 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-14 01:47:30,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 49 transitions, 140 flow [2025-04-14 01:47:30,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 42 transitions, 120 flow [2025-04-14 01:47:30,049 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 01:47:30,058 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;@12bc8726, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 01:47:30,058 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-14 01:47:30,087 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 01:47:30,087 INFO L116 PetriNetUnfolderBase]: 0/41 cut-off events. [2025-04-14 01:47:30,087 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-14 01:47:30,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:47:30,089 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:47:30,089 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 4 more)] === [2025-04-14 01:47:30,094 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:47:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1852975154, now seen corresponding path program 1 times [2025-04-14 01:47:30,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:47:30,099 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509993924] [2025-04-14 01:47:30,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:47:30,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:47:30,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-14 01:47:30,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-14 01:47:30,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:47:30,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:47:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:47:30,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:47:30,395 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509993924] [2025-04-14 01:47:30,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509993924] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:47:30,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:47:30,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 01:47:30,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211228835] [2025-04-14 01:47:30,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:47:30,401 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:47:30,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:47:30,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:47:30,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:47:30,419 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-04-14 01:47:30,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:47:30,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:47:30,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-04-14 01:47:30,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:47:33,222 INFO L116 PetriNetUnfolderBase]: 45933/58343 cut-off events. [2025-04-14 01:47:33,223 INFO L117 PetriNetUnfolderBase]: For 4811/4811 co-relation queries the response was YES. [2025-04-14 01:47:33,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120887 conditions, 58343 events. 45933/58343 cut-off events. For 4811/4811 co-relation queries the response was YES. Maximal size of possible extension queue 1771. Compared 285723 event pairs, 31565 based on Foata normal form. 188/58530 useless extension candidates. Maximal degree in co-relation 117357. Up to 58167 conditions per place. [2025-04-14 01:47:33,631 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 51 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2025-04-14 01:47:33,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 270 flow [2025-04-14 01:47:33,632 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:47:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:47:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2025-04-14 01:47:33,643 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2025-04-14 01:47:33,644 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 120 flow. Second operand 3 states and 85 transitions. [2025-04-14 01:47:33,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 270 flow [2025-04-14 01:47:33,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 238 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-04-14 01:47:33,683 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 121 flow [2025-04-14 01:47:33,685 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2025-04-14 01:47:33,688 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2025-04-14 01:47:33,688 INFO L485 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 121 flow [2025-04-14 01:47:33,689 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:47:33,689 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:47:33,689 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:47:33,689 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 01:47:33,689 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 4 more)] === [2025-04-14 01:47:33,690 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:47:33,690 INFO L85 PathProgramCache]: Analyzing trace with hash 981856668, now seen corresponding path program 2 times [2025-04-14 01:47:33,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:47:33,690 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457235519] [2025-04-14 01:47:33,690 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:47:33,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:47:33,711 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 1 equivalence classes. [2025-04-14 01:47:33,725 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-14 01:47:33,725 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:47:33,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:47:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:47:33,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:47:33,794 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457235519] [2025-04-14 01:47:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457235519] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:47:33,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:47:33,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:47:33,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696494057] [2025-04-14 01:47:33,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:47:33,795 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:47:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:47:33,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:47:33,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:47:33,795 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-04-14 01:47:33,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:47:33,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:47:33,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-04-14 01:47:33,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:47:35,587 INFO L116 PetriNetUnfolderBase]: 35904/47100 cut-off events. [2025-04-14 01:47:35,587 INFO L117 PetriNetUnfolderBase]: For 10040/10040 co-relation queries the response was YES. [2025-04-14 01:47:35,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103690 conditions, 47100 events. 35904/47100 cut-off events. For 10040/10040 co-relation queries the response was YES. Maximal size of possible extension queue 1429. Compared 251211 event pairs, 10899 based on Foata normal form. 3802/50901 useless extension candidates. Maximal degree in co-relation 26724. Up to 32217 conditions per place. [2025-04-14 01:47:35,882 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 68 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2025-04-14 01:47:35,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 76 transitions, 347 flow [2025-04-14 01:47:35,884 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:47:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:47:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-04-14 01:47:35,884 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6870748299319728 [2025-04-14 01:47:35,884 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 121 flow. Second operand 3 states and 101 transitions. [2025-04-14 01:47:35,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 76 transitions, 347 flow [2025-04-14 01:47:35,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 76 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:47:35,886 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 160 flow [2025-04-14 01:47:35,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2025-04-14 01:47:35,887 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2025-04-14 01:47:35,887 INFO L485 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 160 flow [2025-04-14 01:47:35,887 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:47:35,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:47:35,887 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:47:35,887 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 01:47:35,887 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 4 more)] === [2025-04-14 01:47:35,888 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:47:35,888 INFO L85 PathProgramCache]: Analyzing trace with hash -534895354, now seen corresponding path program 3 times [2025-04-14 01:47:35,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:47:35,888 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639817115] [2025-04-14 01:47:35,888 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:47:35,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:47:35,906 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 1 equivalence classes. [2025-04-14 01:47:35,910 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-14 01:47:35,910 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:47:35,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:47:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:47:35,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:47:35,991 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639817115] [2025-04-14 01:47:35,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639817115] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:47:35,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:47:35,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:47:35,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357230991] [2025-04-14 01:47:35,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:47:35,991 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:47:35,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:47:35,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:47:35,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:47:35,992 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-04-14 01:47:35,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:47:35,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:47:35,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-04-14 01:47:35,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:47:37,722 INFO L116 PetriNetUnfolderBase]: 42168/55909 cut-off events. [2025-04-14 01:47:37,722 INFO L117 PetriNetUnfolderBase]: For 31048/31048 co-relation queries the response was YES. [2025-04-14 01:47:37,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134391 conditions, 55909 events. 42168/55909 cut-off events. For 31048/31048 co-relation queries the response was YES. Maximal size of possible extension queue 1638. Compared 308676 event pairs, 21775 based on Foata normal form. 1086/56994 useless extension candidates. Maximal degree in co-relation 28306. Up to 33365 conditions per place. [2025-04-14 01:47:38,011 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 68 selfloop transitions, 2 changer transitions 1/74 dead transitions. [2025-04-14 01:47:38,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 74 transitions, 391 flow [2025-04-14 01:47:38,011 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:47:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:47:38,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-04-14 01:47:38,012 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2025-04-14 01:47:38,012 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 160 flow. Second operand 3 states and 93 transitions. [2025-04-14 01:47:38,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 74 transitions, 391 flow [2025-04-14 01:47:38,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 363 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-04-14 01:47:38,049 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 154 flow [2025-04-14 01:47:38,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2025-04-14 01:47:38,050 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2025-04-14 01:47:38,050 INFO L485 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 154 flow [2025-04-14 01:47:38,050 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:47:38,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:47:38,051 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:47:38,051 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 01:47:38,051 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 4 more)] === [2025-04-14 01:47:38,051 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:47:38,051 INFO L85 PathProgramCache]: Analyzing trace with hash -709786912, now seen corresponding path program 4 times [2025-04-14 01:47:38,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:47:38,052 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916583350] [2025-04-14 01:47:38,052 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:47:38,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:47:38,065 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-04-14 01:47:38,071 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 41 of 42 statements. [2025-04-14 01:47:38,071 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-14 01:47:38,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:47:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:47:38,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:47:38,165 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916583350] [2025-04-14 01:47:38,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916583350] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:47:38,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:47:38,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:47:38,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118963017] [2025-04-14 01:47:38,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:47:38,166 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:47:38,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:47:38,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:47:38,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:47:38,166 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-04-14 01:47:38,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:47:38,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:47:38,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-04-14 01:47:38,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:47:40,691 INFO L116 PetriNetUnfolderBase]: 48000/64379 cut-off events. [2025-04-14 01:47:40,691 INFO L117 PetriNetUnfolderBase]: For 28182/28182 co-relation queries the response was YES. [2025-04-14 01:47:40,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152333 conditions, 64379 events. 48000/64379 cut-off events. For 28182/28182 co-relation queries the response was YES. Maximal size of possible extension queue 1915. Compared 379277 event pairs, 21654 based on Foata normal form. 1850/66228 useless extension candidates. Maximal degree in co-relation 68294. Up to 34165 conditions per place. [2025-04-14 01:47:40,840 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 73 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2025-04-14 01:47:40,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 400 flow [2025-04-14 01:47:40,841 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:47:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:47:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-04-14 01:47:40,842 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6394557823129252 [2025-04-14 01:47:40,842 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 154 flow. Second operand 3 states and 94 transitions. [2025-04-14 01:47:40,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 400 flow [2025-04-14 01:47:41,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:47:41,157 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 164 flow [2025-04-14 01:47:41,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2025-04-14 01:47:41,157 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2025-04-14 01:47:41,157 INFO L485 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 164 flow [2025-04-14 01:47:41,157 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:47:41,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:47:41,158 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:47:41,158 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 01:47:41,158 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 4 more)] === [2025-04-14 01:47:41,158 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:47:41,158 INFO L85 PathProgramCache]: Analyzing trace with hash 886935368, now seen corresponding path program 5 times [2025-04-14 01:47:41,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:47:41,158 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528865446] [2025-04-14 01:47:41,158 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:47:41,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:47:41,166 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 1 equivalence classes. [2025-04-14 01:47:41,171 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-14 01:47:41,171 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:47:41,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:47:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:47:41,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:47:41,230 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528865446] [2025-04-14 01:47:41,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528865446] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:47:41,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:47:41,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:47:41,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724737440] [2025-04-14 01:47:41,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:47:41,230 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:47:41,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:47:41,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:47:41,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:47:41,231 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-04-14 01:47:41,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:47:41,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:47:41,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-04-14 01:47:41,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:47:44,024 INFO L116 PetriNetUnfolderBase]: 52177/70758 cut-off events. [2025-04-14 01:47:44,024 INFO L117 PetriNetUnfolderBase]: For 37300/37300 co-relation queries the response was YES. [2025-04-14 01:47:44,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176461 conditions, 70758 events. 52177/70758 cut-off events. For 37300/37300 co-relation queries the response was YES. Maximal size of possible extension queue 2181. Compared 425874 event pairs, 30812 based on Foata normal form. 1994/72751 useless extension candidates. Maximal degree in co-relation 66406. Up to 47081 conditions per place. [2025-04-14 01:47:44,184 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 62 selfloop transitions, 2 changer transitions 9/76 dead transitions. [2025-04-14 01:47:44,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 76 transitions, 406 flow [2025-04-14 01:47:44,187 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:47:44,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:47:44,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2025-04-14 01:47:44,188 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-04-14 01:47:44,188 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 164 flow. Second operand 3 states and 91 transitions. [2025-04-14 01:47:44,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 76 transitions, 406 flow [2025-04-14 01:47:44,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:47:44,319 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 156 flow [2025-04-14 01:47:44,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2025-04-14 01:47:44,320 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2025-04-14 01:47:44,320 INFO L485 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 156 flow [2025-04-14 01:47:44,320 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:47:44,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:47:44,320 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:47:44,320 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 01:47:44,320 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 4 more)] === [2025-04-14 01:47:44,321 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:47:44,321 INFO L85 PathProgramCache]: Analyzing trace with hash 782464362, now seen corresponding path program 6 times [2025-04-14 01:47:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:47:44,321 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756686846] [2025-04-14 01:47:44,321 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:47:44,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:47:44,328 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 42 statements into 1 equivalence classes. [2025-04-14 01:47:44,331 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-14 01:47:44,331 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:47:44,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:47:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:47:44,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:47:44,378 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756686846] [2025-04-14 01:47:44,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756686846] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:47:44,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:47:44,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:47:44,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126035970] [2025-04-14 01:47:44,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:47:44,379 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:47:44,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:47:44,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:47:44,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:47:44,379 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-04-14 01:47:44,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:47:44,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:47:44,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-04-14 01:47:44,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:47:45,933 INFO L116 PetriNetUnfolderBase]: 27255/37556 cut-off events. [2025-04-14 01:47:45,934 INFO L117 PetriNetUnfolderBase]: For 24224/24224 co-relation queries the response was YES. [2025-04-14 01:47:45,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98176 conditions, 37556 events. 27255/37556 cut-off events. For 24224/24224 co-relation queries the response was YES. Maximal size of possible extension queue 1415. Compared 220029 event pairs, 13951 based on Foata normal form. 1136/38691 useless extension candidates. Maximal degree in co-relation 43133. Up to 20315 conditions per place. [2025-04-14 01:47:46,018 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2025-04-14 01:47:46,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 337 flow [2025-04-14 01:47:46,019 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:47:46,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:47:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2025-04-14 01:47:46,019 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5578231292517006 [2025-04-14 01:47:46,019 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 156 flow. Second operand 3 states and 82 transitions. [2025-04-14 01:47:46,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 337 flow [2025-04-14 01:47:46,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 330 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-14 01:47:46,163 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2025-04-14 01:47:46,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2025-04-14 01:47:46,163 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2025-04-14 01:47:46,163 INFO L485 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2025-04-14 01:47:46,164 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:47:46,166 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2025-04-14 01:47:46,166 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2025-04-14 01:47:46,166 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-04-14 01:47:46,166 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2025-04-14 01:47:46,166 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2025-04-14 01:47:46,166 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2025-04-14 01:47:46,166 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2025-04-14 01:47:46,166 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 01:47:46,166 INFO L422 BasicCegarLoop]: Path program histogram: [6] [2025-04-14 01:47:46,169 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 01:47:46,169 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 01:47:46,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 01:47:46 BasicIcfg [2025-04-14 01:47:46,172 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 01:47:46,173 INFO L158 Benchmark]: Toolchain (without parser) took 17162.89ms. Allocated memory was 155.2MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 109.5MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2025-04-14 01:47:46,173 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 01:47:46,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.08ms. Allocated memory is still 155.2MB. Free memory was 109.5MB in the beginning and 85.9MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-14 01:47:46,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.61ms. Allocated memory is still 155.2MB. Free memory was 85.9MB in the beginning and 83.4MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 01:47:46,174 INFO L158 Benchmark]: Boogie Preprocessor took 29.55ms. Allocated memory is still 155.2MB. Free memory was 83.4MB in the beginning and 81.8MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 01:47:46,174 INFO L158 Benchmark]: IcfgBuilder took 455.98ms. Allocated memory is still 155.2MB. Free memory was 81.2MB in the beginning and 44.1MB in the end (delta: 37.1MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2025-04-14 01:47:46,174 INFO L158 Benchmark]: TraceAbstraction took 16266.71ms. Allocated memory was 155.2MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 43.5MB in the beginning and 3.2GB in the end (delta: -3.2GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2025-04-14 01:47:46,175 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 376.08ms. Allocated memory is still 155.2MB. Free memory was 109.5MB in the beginning and 85.9MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.61ms. Allocated memory is still 155.2MB. Free memory was 85.9MB in the beginning and 83.4MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 29.55ms. Allocated memory is still 155.2MB. Free memory was 83.4MB in the beginning and 81.8MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * IcfgBuilder took 455.98ms. Allocated memory is still 155.2MB. Free memory was 81.2MB in the beginning and 44.1MB in the end (delta: 37.1MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * TraceAbstraction took 16266.71ms. Allocated memory was 155.2MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 43.5MB in the beginning and 3.2GB in the end (delta: -3.2GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 802]: 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 13 procedures, 84 locations, 83 edges, 7 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: 16.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 564 IncrementalHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 564 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 252 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 302 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! [2025-04-14 01:47:46,189 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...