/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/chl-sre-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:43:11,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:43:11,721 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 00:43:11,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:43:11,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:43:11,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:43:11,749 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:43:11,750 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:43:11,750 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:43:11,750 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:43:11,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:43:11,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:43:11,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:43:11,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:43:11,750 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:43:11,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:43:11,751 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:43:11,751 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:43:11,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:43:11,752 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:43:11,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:43:11,752 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:43:11,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:43:11,752 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:43:11,752 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:43:11,752 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:43:11,752 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:43:11,752 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:43:11,753 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:43:11,753 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:43:11,753 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:43:11,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:43:11,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:43:11,753 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:43:11,753 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:43:11,753 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:43:11,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:43:11,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:43:11,753 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:43:11,753 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:43:11,753 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:43:11,753 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:43:11,754 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:43:11,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:43:11,754 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:43:11,754 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:43:11,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:43:11,754 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 00:43:11,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:43:11,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:43:11,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:43:11,980 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:43:11,980 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:43:11,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c [2025-04-14 00:43:13,331 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a57b96dba/70b711ea37ba450bbbb232764d26d2dd/FLAG4a754fb7c [2025-04-14 00:43:13,582 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:43:13,583 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c [2025-04-14 00:43:13,589 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a57b96dba/70b711ea37ba450bbbb232764d26d2dd/FLAG4a754fb7c [2025-04-14 00:43:14,381 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a57b96dba/70b711ea37ba450bbbb232764d26d2dd [2025-04-14 00:43:14,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:43:14,386 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:43:14,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:43:14,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:43:14,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:43:14,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14865c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14, skipping insertion in model container [2025-04-14 00:43:14,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,400 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:43:14,557 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/chl-sre-trans.wvr.c[2311,2324] [2025-04-14 00:43:14,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:43:14,569 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:43:14,601 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/chl-sre-trans.wvr.c[2311,2324] [2025-04-14 00:43:14,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:43:14,614 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:43:14,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14 WrapperNode [2025-04-14 00:43:14,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:43:14,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:43:14,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:43:14,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:43:14,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,648 INFO L138 Inliner]: procedures = 21, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2025-04-14 00:43:14,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:43:14,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:43:14,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:43:14,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:43:14,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,672 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 00:43:14,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,677 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,677 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:43:14,685 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:43:14,686 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:43:14,686 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:43:14,686 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (1/1) ... [2025-04-14 00:43:14,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:43:14,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:43:14,712 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 00:43:14,717 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 00:43:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:43:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 00:43:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 00:43:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 00:43:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 00:43:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 00:43:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 00:43:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:43:14,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:43:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:43:14,734 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 00:43:14,807 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:43:14,808 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:43:14,918 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:43:14,919 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:43:14,919 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:43:15,070 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:43:15,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:43:15 BoogieIcfgContainer [2025-04-14 00:43:15,071 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:43:15,072 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:43:15,072 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:43:15,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:43:15,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:43:14" (1/3) ... [2025-04-14 00:43:15,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22018d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:43:15, skipping insertion in model container [2025-04-14 00:43:15,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:43:14" (2/3) ... [2025-04-14 00:43:15,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22018d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:43:15, skipping insertion in model container [2025-04-14 00:43:15,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:43:15" (3/3) ... [2025-04-14 00:43:15,078 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-sre-trans.wvr.c [2025-04-14 00:43:15,091 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:43:15,093 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-sre-trans.wvr.c that has 4 procedures, 19 locations, 15 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-14 00:43:15,093 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:43:15,132 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-14 00:43:15,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 18 transitions, 57 flow [2025-04-14 00:43:15,178 INFO L116 PetriNetUnfolderBase]: 0/15 cut-off events. [2025-04-14 00:43:15,179 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 00:43:15,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 15 events. 0/15 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-14 00:43:15,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 18 transitions, 57 flow [2025-04-14 00:43:15,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 14 transitions, 46 flow [2025-04-14 00:43:15,194 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:43:15,202 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;@435c27e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:43:15,202 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-14 00:43:15,214 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:43:15,214 INFO L116 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-04-14 00:43:15,214 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 00:43:15,214 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:43:15,216 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:43:15,216 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 00:43:15,220 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:43:15,220 INFO L85 PathProgramCache]: Analyzing trace with hash -183901362, now seen corresponding path program 1 times [2025-04-14 00:43:15,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:43:15,227 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137022124] [2025-04-14 00:43:15,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:43:15,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:43:15,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-14 00:43:15,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 00:43:15,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:43:15,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:43:15,850 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 00:43:15,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:43:15,851 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137022124] [2025-04-14 00:43:15,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137022124] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:43:15,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:43:15,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:43:15,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681748248] [2025-04-14 00:43:15,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:43:15,858 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:43:15,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:43:15,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:43:15,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:43:15,878 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-04-14 00:43:15,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 00:43:15,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:43:15,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-04-14 00:43:15,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:43:15,977 INFO L116 PetriNetUnfolderBase]: 34/82 cut-off events. [2025-04-14 00:43:15,977 INFO L117 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-04-14 00:43:15,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 82 events. 34/82 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 234 event pairs, 15 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 146. Up to 43 conditions per place. [2025-04-14 00:43:15,980 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 16 selfloop transitions, 2 changer transitions 6/24 dead transitions. [2025-04-14 00:43:15,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 129 flow [2025-04-14 00:43:15,981 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 00:43:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 00:43:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 37 transitions. [2025-04-14 00:43:15,991 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2025-04-14 00:43:15,992 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 46 flow. Second operand 4 states and 37 transitions. [2025-04-14 00:43:15,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 129 flow [2025-04-14 00:43:15,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 24 transitions, 107 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-04-14 00:43:15,999 INFO L231 Difference]: Finished difference. Result has 23 places, 14 transitions, 45 flow [2025-04-14 00:43:16,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=45, PETRI_PLACES=23, PETRI_TRANSITIONS=14} [2025-04-14 00:43:16,003 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2025-04-14 00:43:16,003 INFO L485 AbstractCegarLoop]: Abstraction has has 23 places, 14 transitions, 45 flow [2025-04-14 00:43:16,004 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 00:43:16,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:43:16,004 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:43:16,004 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:43:16,004 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 00:43:16,005 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:43:16,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1500328666, now seen corresponding path program 2 times [2025-04-14 00:43:16,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:43:16,005 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004930497] [2025-04-14 00:43:16,005 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:43:16,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:43:16,015 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 1 equivalence classes. [2025-04-14 00:43:16,024 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 00:43:16,024 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:43:16,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:43:16,412 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 00:43:16,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:43:16,413 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004930497] [2025-04-14 00:43:16,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004930497] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:43:16,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:43:16,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:43:16,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938462627] [2025-04-14 00:43:16,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:43:16,414 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:43:16,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:43:16,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:43:16,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:43:16,415 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-04-14 00:43:16,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 14 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 00:43:16,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:43:16,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-04-14 00:43:16,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:43:16,722 INFO L116 PetriNetUnfolderBase]: 23/72 cut-off events. [2025-04-14 00:43:16,722 INFO L117 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2025-04-14 00:43:16,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 72 events. 23/72 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 192 event pairs, 5 based on Foata normal form. 2/74 useless extension candidates. Maximal degree in co-relation 54. Up to 19 conditions per place. [2025-04-14 00:43:16,723 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 19 selfloop transitions, 4 changer transitions 14/37 dead transitions. [2025-04-14 00:43:16,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 189 flow [2025-04-14 00:43:16,725 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:43:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:43:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 60 transitions. [2025-04-14 00:43:16,726 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-04-14 00:43:16,726 INFO L175 Difference]: Start difference. First operand has 23 places, 14 transitions, 45 flow. Second operand 7 states and 60 transitions. [2025-04-14 00:43:16,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 189 flow [2025-04-14 00:43:16,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 37 transitions, 176 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-04-14 00:43:16,727 INFO L231 Difference]: Finished difference. Result has 28 places, 14 transitions, 52 flow [2025-04-14 00:43:16,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=14} [2025-04-14 00:43:16,728 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2025-04-14 00:43:16,728 INFO L485 AbstractCegarLoop]: Abstraction has has 28 places, 14 transitions, 52 flow [2025-04-14 00:43:16,728 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 00:43:16,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:43:16,728 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:43:16,728 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:43:16,728 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 00:43:16,729 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:43:16,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1531643402, now seen corresponding path program 3 times [2025-04-14 00:43:16,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:43:16,730 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350409976] [2025-04-14 00:43:16,730 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 00:43:16,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:43:16,740 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 1 equivalence classes. [2025-04-14 00:43:16,755 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 00:43:16,756 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 00:43:16,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:43:16,991 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 00:43:16,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:43:16,992 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350409976] [2025-04-14 00:43:16,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350409976] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:43:16,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:43:16,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:43:16,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240456741] [2025-04-14 00:43:16,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:43:16,992 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:43:16,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:43:16,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:43:16,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:43:16,993 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-04-14 00:43:16,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 14 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 00:43:16,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:43:16,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-04-14 00:43:16,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:43:17,134 INFO L116 PetriNetUnfolderBase]: 9/31 cut-off events. [2025-04-14 00:43:17,134 INFO L117 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-04-14 00:43:17,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 31 events. 9/31 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 2 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 92. Up to 17 conditions per place. [2025-04-14 00:43:17,135 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2025-04-14 00:43:17,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 98 flow [2025-04-14 00:43:17,135 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:43:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:43:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2025-04-14 00:43:17,136 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2025-04-14 00:43:17,136 INFO L175 Difference]: Start difference. First operand has 28 places, 14 transitions, 52 flow. Second operand 5 states and 35 transitions. [2025-04-14 00:43:17,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 98 flow [2025-04-14 00:43:17,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 19 transitions, 86 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-04-14 00:43:17,137 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2025-04-14 00:43:17,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2025-04-14 00:43:17,138 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2025-04-14 00:43:17,138 INFO L485 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2025-04-14 00:43:17,139 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 00:43:17,142 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-14 00:43:17,142 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-14 00:43:17,142 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-14 00:43:17,142 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-14 00:43:17,142 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:43:17,143 INFO L422 BasicCegarLoop]: Path program histogram: [3] [2025-04-14 00:43:17,145 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:43:17,145 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:43:17,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:43:17 BasicIcfg [2025-04-14 00:43:17,150 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:43:17,151 INFO L158 Benchmark]: Toolchain (without parser) took 2765.62ms. Allocated memory is still 155.2MB. Free memory was 107.1MB in the beginning and 45.5MB in the end (delta: 61.6MB). Peak memory consumption was 60.3MB. Max. memory is 8.0GB. [2025-04-14 00:43:17,151 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory was 94.9MB in the beginning and 94.7MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:43:17,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.00ms. Allocated memory is still 155.2MB. Free memory was 106.3MB in the beginning and 92.1MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-14 00:43:17,152 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.76ms. Allocated memory is still 155.2MB. Free memory was 92.1MB in the beginning and 90.3MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:43:17,152 INFO L158 Benchmark]: Boogie Preprocessor took 35.69ms. Allocated memory is still 155.2MB. Free memory was 90.3MB in the beginning and 89.5MB in the end (delta: 788.8kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:43:17,152 INFO L158 Benchmark]: IcfgBuilder took 385.14ms. Allocated memory is still 155.2MB. Free memory was 89.5MB in the beginning and 59.3MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2025-04-14 00:43:17,155 INFO L158 Benchmark]: TraceAbstraction took 2078.22ms. Allocated memory is still 155.2MB. Free memory was 59.3MB in the beginning and 45.5MB in the end (delta: 13.8MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. [2025-04-14 00:43:17,157 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory was 94.9MB in the beginning and 94.7MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 229.00ms. Allocated memory is still 155.2MB. Free memory was 106.3MB in the beginning and 92.1MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.76ms. Allocated memory is still 155.2MB. Free memory was 92.1MB in the beginning and 90.3MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.69ms. Allocated memory is still 155.2MB. Free memory was 90.3MB in the beginning and 89.5MB in the end (delta: 788.8kB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 385.14ms. Allocated memory is still 155.2MB. Free memory was 89.5MB in the beginning and 59.3MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2078.22ms. Allocated memory is still 155.2MB. Free memory was 59.3MB in the beginning and 45.5MB in the end (delta: 13.8MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: 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, 28 locations, 27 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=2, InterpolantAutomatonStates: 16, 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, 1.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 500 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 00:43:17,174 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...