/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/weaver/parallel-simple-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:56:19,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:56:19,641 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-14 00:56:19,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:56:19,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:56:19,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:56:19,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:56:19,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:56:19,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:56:19,659 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:56:19,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:56:19,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:56:19,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:56:19,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:56:19,659 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:56:19,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:56:19,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:56:19,659 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:56:19,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:56:19,660 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:56:19,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:56:19,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:56:19,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:56:19,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:56:19,661 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:56:19,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:56:19,661 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:56:19,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:56:19,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:56:19,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:56:19,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:56:19,661 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 00:56:19,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:56:19,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:56:19,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:56:19,913 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:56:19,914 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:56:19,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2025-04-14 00:56:21,246 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43fac90f9/6a8343e7a7f246afa37543eea732c8f1/FLAG04b5b139f [2025-04-14 00:56:21,422 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:56:21,423 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2025-04-14 00:56:21,431 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43fac90f9/6a8343e7a7f246afa37543eea732c8f1/FLAG04b5b139f [2025-04-14 00:56:22,297 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43fac90f9/6a8343e7a7f246afa37543eea732c8f1 [2025-04-14 00:56:22,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:56:22,300 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:56:22,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:56:22,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:56:22,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:56:22,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,304 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e50b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22, skipping insertion in model container [2025-04-14 00:56:22,304 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,316 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:56:22,441 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2082,2095] [2025-04-14 00:56:22,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:56:22,450 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:56:22,469 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2082,2095] [2025-04-14 00:56:22,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:56:22,486 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:56:22,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22 WrapperNode [2025-04-14 00:56:22,487 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:56:22,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:56:22,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:56:22,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:56:22,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,511 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2025-04-14 00:56:22,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:56:22,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:56:22,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:56:22,512 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:56:22,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,525 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-14 00:56:22,525 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,526 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,528 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,529 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:56:22,531 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:56:22,534 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:56:22,534 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:56:22,535 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (1/1) ... [2025-04-14 00:56:22,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:56:22,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:56:22,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-14 00:56:22,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-14 00:56:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:56:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 00:56:22,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 00:56:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 00:56:22,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 00:56:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 00:56:22,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 00:56:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:56:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:56:22,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:56:22,575 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 00:56:22,634 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:56:22,635 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:56:22,759 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:56:22,759 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:56:22,760 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:56:22,872 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:56:22,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:56:22 BoogieIcfgContainer [2025-04-14 00:56:22,875 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:56:22,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:56:22,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:56:22,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:56:22,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:56:22" (1/3) ... [2025-04-14 00:56:22,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25978a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:56:22, skipping insertion in model container [2025-04-14 00:56:22,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:56:22" (2/3) ... [2025-04-14 00:56:22,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25978a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:56:22, skipping insertion in model container [2025-04-14 00:56:22,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:56:22" (3/3) ... [2025-04-14 00:56:22,883 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2025-04-14 00:56:22,892 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:56:22,893 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-simple-equiv.wvr.c that has 4 procedures, 25 locations, 21 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-14 00:56:22,893 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:56:22,929 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-14 00:56:22,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 24 transitions, 69 flow [2025-04-14 00:56:22,982 INFO L116 PetriNetUnfolderBase]: 0/21 cut-off events. [2025-04-14 00:56:22,983 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 00:56:22,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 21 events. 0/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-14 00:56:22,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 24 transitions, 69 flow [2025-04-14 00:56:22,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 20 transitions, 58 flow [2025-04-14 00:56:22,997 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:56:23,005 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;@2b322f71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:56:23,005 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-14 00:56:23,013 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:56:23,013 INFO L116 PetriNetUnfolderBase]: 0/19 cut-off events. [2025-04-14 00:56:23,013 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 00:56:23,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:56:23,014 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:56:23,014 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:56:23,020 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:56:23,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2108443881, now seen corresponding path program 1 times [2025-04-14 00:56:23,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:56:23,025 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988530925] [2025-04-14 00:56:23,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:56:23,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:56:23,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 00:56:23,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 00:56:23,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:56:23,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:23,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:56:23,486 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988530925] [2025-04-14 00:56:23,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988530925] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:56:23,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:56:23,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:56:23,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415699688] [2025-04-14 00:56:23,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:56:23,491 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:56:23,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:56:23,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:56:23,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:56:23,509 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-04-14 00:56:23,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:56:23,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:56:23,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-04-14 00:56:23,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:56:23,664 INFO L116 PetriNetUnfolderBase]: 99/195 cut-off events. [2025-04-14 00:56:23,664 INFO L117 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2025-04-14 00:56:23,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 195 events. 99/195 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 674 event pairs, 36 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 373. Up to 144 conditions per place. [2025-04-14 00:56:23,667 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 20 selfloop transitions, 5 changer transitions 15/42 dead transitions. [2025-04-14 00:56:23,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 42 transitions, 200 flow [2025-04-14 00:56:23,668 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:56:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:56:23,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2025-04-14 00:56:23,676 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.55 [2025-04-14 00:56:23,677 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 58 flow. Second operand 5 states and 66 transitions. [2025-04-14 00:56:23,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 42 transitions, 200 flow [2025-04-14 00:56:23,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 42 transitions, 176 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-04-14 00:56:23,683 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 81 flow [2025-04-14 00:56:23,685 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=81, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2025-04-14 00:56:23,688 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2025-04-14 00:56:23,688 INFO L485 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 81 flow [2025-04-14 00:56:23,689 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:56:23,689 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:56:23,689 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] [2025-04-14 00:56:23,689 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:56:23,689 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 1 more)] === [2025-04-14 00:56:23,689 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:56:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1422885863, now seen corresponding path program 2 times [2025-04-14 00:56:23,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:56:23,690 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166534976] [2025-04-14 00:56:23,690 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:56:23,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:56:23,701 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-04-14 00:56:23,715 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 00:56:23,715 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:56:23,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:23,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:23,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:56:23,890 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166534976] [2025-04-14 00:56:23,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166534976] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:56:23,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:56:23,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:56:23,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880334893] [2025-04-14 00:56:23,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:56:23,891 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:56:23,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:56:23,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:56:23,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:56:23,891 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-04-14 00:56:23,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:56:23,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:56:23,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-04-14 00:56:23,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:56:24,049 INFO L116 PetriNetUnfolderBase]: 85/170 cut-off events. [2025-04-14 00:56:24,049 INFO L117 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2025-04-14 00:56:24,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 170 events. 85/170 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 536 event pairs, 4 based on Foata normal form. 1/170 useless extension candidates. Maximal degree in co-relation 172. Up to 59 conditions per place. [2025-04-14 00:56:24,050 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 23 selfloop transitions, 6 changer transitions 15/46 dead transitions. [2025-04-14 00:56:24,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 240 flow [2025-04-14 00:56:24,052 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:56:24,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:56:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2025-04-14 00:56:24,054 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-04-14 00:56:24,054 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 81 flow. Second operand 5 states and 70 transitions. [2025-04-14 00:56:24,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 240 flow [2025-04-14 00:56:24,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 217 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-04-14 00:56:24,055 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 92 flow [2025-04-14 00:56:24,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2025-04-14 00:56:24,056 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2025-04-14 00:56:24,056 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 92 flow [2025-04-14 00:56:24,056 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:56:24,056 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:56:24,056 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:56:24,056 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:56:24,056 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:56:24,058 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:56:24,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1197610959, now seen corresponding path program 3 times [2025-04-14 00:56:24,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:56:24,058 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929806650] [2025-04-14 00:56:24,058 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:56:24,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:56:24,067 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 1 equivalence classes. [2025-04-14 00:56:24,076 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 00:56:24,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 00:56:24,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:56:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:56:24,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:56:24,188 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929806650] [2025-04-14 00:56:24,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929806650] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:56:24,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:56:24,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:56:24,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138001187] [2025-04-14 00:56:24,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:56:24,189 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:56:24,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:56:24,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:56:24,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:56:24,189 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-04-14 00:56:24,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:56:24,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:56:24,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-04-14 00:56:24,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:56:24,278 INFO L116 PetriNetUnfolderBase]: 39/92 cut-off events. [2025-04-14 00:56:24,278 INFO L117 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-04-14 00:56:24,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 92 events. 39/92 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 241 event pairs, 4 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 87. Up to 37 conditions per place. [2025-04-14 00:56:24,279 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2025-04-14 00:56:24,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 178 flow [2025-04-14 00:56:24,279 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:56:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:56:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2025-04-14 00:56:24,280 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-04-14 00:56:24,280 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 92 flow. Second operand 5 states and 57 transitions. [2025-04-14 00:56:24,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 178 flow [2025-04-14 00:56:24,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 160 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-04-14 00:56:24,281 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2025-04-14 00:56:24,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2025-04-14 00:56:24,282 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2025-04-14 00:56:24,282 INFO L485 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2025-04-14 00:56:24,282 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:56:24,285 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-14 00:56:24,285 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-14 00:56:24,285 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-14 00:56:24,285 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-14 00:56:24,286 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:56:24,286 INFO L422 BasicCegarLoop]: Path program histogram: [3] [2025-04-14 00:56:24,289 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:56:24,289 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:56:24,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:56:24 BasicIcfg [2025-04-14 00:56:24,294 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:56:24,294 INFO L158 Benchmark]: Toolchain (without parser) took 1994.32ms. Allocated memory is still 155.2MB. Free memory was 108.2MB in the beginning and 62.8MB in the end (delta: 45.5MB). Peak memory consumption was 44.1MB. Max. memory is 8.0GB. [2025-04-14 00:56:24,294 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:56:24,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.31ms. Allocated memory is still 155.2MB. Free memory was 108.2MB in the beginning and 94.4MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-14 00:56:24,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.07ms. Allocated memory is still 155.2MB. Free memory was 94.4MB in the beginning and 92.8MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:56:24,295 INFO L158 Benchmark]: Boogie Preprocessor took 19.21ms. Allocated memory is still 155.2MB. Free memory was 92.8MB in the beginning and 91.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:56:24,295 INFO L158 Benchmark]: IcfgBuilder took 343.45ms. Allocated memory is still 155.2MB. Free memory was 91.4MB in the beginning and 69.9MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-14 00:56:24,295 INFO L158 Benchmark]: TraceAbstraction took 1416.52ms. Allocated memory is still 155.2MB. Free memory was 69.3MB in the beginning and 62.8MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2025-04-14 00:56:24,296 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 155.2MB. Free memory is still 85.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 186.31ms. Allocated memory is still 155.2MB. Free memory was 108.2MB in the beginning and 94.4MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.07ms. Allocated memory is still 155.2MB. Free memory was 94.4MB in the beginning and 92.8MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.21ms. Allocated memory is still 155.2MB. Free memory was 92.8MB in the beginning and 91.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 343.45ms. Allocated memory is still 155.2MB. Free memory was 91.4MB in the beginning and 69.9MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1416.52ms. Allocated memory is still 155.2MB. Free memory was 69.3MB in the beginning and 62.8MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 77]: 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, 38 locations, 37 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: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 317 IncrementalHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 317 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-14 00:56:24,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...