/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:08:46,345 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:08:46,411 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 00:08:46,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:08:46,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:08:46,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:08:46,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:08:46,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:08:46,442 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:08:46,442 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:08:46,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:08:46,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:08:46,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:08:46,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:08:46,442 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:08:46,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:08:46,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:08:46,443 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:08:46,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:08:46,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:08:46,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:08:46,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:08:46,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:08:46,443 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:08:46,443 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:08:46,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:08:46,443 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:08:46,443 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:08:46,443 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:08:46,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:08:46,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:08:46,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:08:46,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:08:46,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:08:46,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:08:46,445 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 00:08:46,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:08:46,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:08:46,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:08:46,718 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:08:46,720 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:08:46,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2025-04-14 00:08:48,051 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfe32d3cd/f8ffc93db5e64c528b9bb79da750e8f2/FLAG30979419d [2025-04-14 00:08:48,462 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:08:48,462 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2025-04-14 00:08:48,477 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfe32d3cd/f8ffc93db5e64c528b9bb79da750e8f2/FLAG30979419d [2025-04-14 00:08:49,190 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfe32d3cd/f8ffc93db5e64c528b9bb79da750e8f2 [2025-04-14 00:08:49,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:08:49,199 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:08:49,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:08:49,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:08:49,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:08:49,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748ae6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49, skipping insertion in model container [2025-04-14 00:08:49,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,242 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:08:49,413 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.i[945,958] [2025-04-14 00:08:49,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:08:49,567 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:08:49,590 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.i[945,958] [2025-04-14 00:08:49,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:08:49,654 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:08:49,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49 WrapperNode [2025-04-14 00:08:49,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:08:49,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:08:49,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:08:49,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:08:49,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,690 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 49 [2025-04-14 00:08:49,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:08:49,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:08:49,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:08:49,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:08:49,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,706 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 00:08:49,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,714 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,716 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:08:49,719 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:08:49,719 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:08:49,720 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:08:49,720 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (1/1) ... [2025-04-14 00:08:49,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:08:49,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:08:49,744 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 00:08:49,746 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 00:08:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 00:08:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:08:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-14 00:08:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-14 00:08:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-14 00:08:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-14 00:08:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:08:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 00:08:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:08:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:08:49,768 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 00:08:49,866 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:08:49,867 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:08:49,965 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:08:49,965 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:08:49,965 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:08:50,045 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:08:50,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:08:50 BoogieIcfgContainer [2025-04-14 00:08:50,045 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:08:50,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:08:50,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:08:50,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:08:50,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:08:49" (1/3) ... [2025-04-14 00:08:50,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e557698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:08:50, skipping insertion in model container [2025-04-14 00:08:50,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:49" (2/3) ... [2025-04-14 00:08:50,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e557698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:08:50, skipping insertion in model container [2025-04-14 00:08:50,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:08:50" (3/3) ... [2025-04-14 00:08:50,051 INFO L128 eAbstractionObserver]: Analyzing ICFG safe010_tso.i [2025-04-14 00:08:50,062 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:08:50,063 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe010_tso.i that has 3 procedures, 26 locations, 23 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-14 00:08:50,064 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:08:50,094 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-14 00:08:50,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 58 flow [2025-04-14 00:08:50,149 INFO L116 PetriNetUnfolderBase]: 0/23 cut-off events. [2025-04-14 00:08:50,155 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:08:50,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 23 events. 0/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-14 00:08:50,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 25 transitions, 58 flow [2025-04-14 00:08:50,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2025-04-14 00:08:50,170 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:08:50,178 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;@489102ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:08:50,178 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-14 00:08:50,188 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:08:50,188 INFO L116 PetriNetUnfolderBase]: 0/20 cut-off events. [2025-04-14 00:08:50,188 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:08:50,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:08:50,189 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:08:50,189 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-14 00:08:50,193 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:08:50,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1938745219, now seen corresponding path program 1 times [2025-04-14 00:08:50,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:08:50,203 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859540552] [2025-04-14 00:08:50,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:08:50,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:08:50,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-14 00:08:50,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-14 00:08:50,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:08:50,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:08:50,653 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 00:08:50,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:08:50,653 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859540552] [2025-04-14 00:08:50,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859540552] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:08:50,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:08:50,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 00:08:50,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045032446] [2025-04-14 00:08:50,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:08:50,662 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:08:50,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:08:50,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:08:50,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:08:50,700 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-04-14 00:08:50,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 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 00:08:50,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:08:50,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-04-14 00:08:50,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:08:50,947 INFO L116 PetriNetUnfolderBase]: 413/712 cut-off events. [2025-04-14 00:08:50,948 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-14 00:08:50,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 712 events. 413/712 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3070 event pairs, 194 based on Foata normal form. 36/747 useless extension candidates. Maximal degree in co-relation 1430. Up to 632 conditions per place. [2025-04-14 00:08:50,959 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 26 selfloop transitions, 3 changer transitions 14/45 dead transitions. [2025-04-14 00:08:50,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 185 flow [2025-04-14 00:08:50,960 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:08:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:08:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2025-04-14 00:08:50,972 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.52 [2025-04-14 00:08:50,976 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 5 states and 65 transitions. [2025-04-14 00:08:50,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 185 flow [2025-04-14 00:08:50,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-14 00:08:50,986 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 75 flow [2025-04-14 00:08:50,989 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2025-04-14 00:08:50,993 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2025-04-14 00:08:50,993 INFO L485 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 75 flow [2025-04-14 00:08:50,993 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 00:08:50,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:08:50,993 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:08:50,994 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:08:50,994 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-14 00:08:50,994 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:08:50,994 INFO L85 PathProgramCache]: Analyzing trace with hash 882195582, now seen corresponding path program 1 times [2025-04-14 00:08:50,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:08:50,995 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752400118] [2025-04-14 00:08:50,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:08:50,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:08:51,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-14 00:08:51,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-14 00:08:51,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:08:51,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:08:51,139 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 00:08:51,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:08:51,140 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752400118] [2025-04-14 00:08:51,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752400118] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:08:51,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:08:51,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 00:08:51,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911671485] [2025-04-14 00:08:51,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:08:51,141 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:08:51,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:08:51,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:08:51,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:08:51,141 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-04-14 00:08:51,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 00:08:51,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:08:51,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-04-14 00:08:51,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:08:51,333 INFO L116 PetriNetUnfolderBase]: 393/677 cut-off events. [2025-04-14 00:08:51,333 INFO L117 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2025-04-14 00:08:51,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 677 events. 393/677 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2738 event pairs, 76 based on Foata normal form. 30/706 useless extension candidates. Maximal degree in co-relation 1621. Up to 548 conditions per place. [2025-04-14 00:08:51,342 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 29 selfloop transitions, 2 changer transitions 14/47 dead transitions. [2025-04-14 00:08:51,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 220 flow [2025-04-14 00:08:51,344 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:08:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:08:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2025-04-14 00:08:51,344 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.52 [2025-04-14 00:08:51,344 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 75 flow. Second operand 5 states and 65 transitions. [2025-04-14 00:08:51,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 220 flow [2025-04-14 00:08:51,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 47 transitions, 214 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-14 00:08:51,349 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 82 flow [2025-04-14 00:08:51,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2025-04-14 00:08:51,350 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2025-04-14 00:08:51,350 INFO L485 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 82 flow [2025-04-14 00:08:51,351 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 00:08:51,351 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:08:51,351 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:08:51,351 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:08:51,351 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-14 00:08:51,352 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:08:51,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1584003814, now seen corresponding path program 1 times [2025-04-14 00:08:51,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:08:51,352 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39466281] [2025-04-14 00:08:51,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:08:51,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:08:51,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-14 00:08:51,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-14 00:08:51,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:08:51,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:08:51,541 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 00:08:51,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:08:51,541 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39466281] [2025-04-14 00:08:51,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39466281] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:08:51,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:08:51,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:08:51,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952662649] [2025-04-14 00:08:51,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:08:51,542 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:08:51,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:08:51,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:08:51,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:08:51,543 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-04-14 00:08:51,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 00:08:51,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:08:51,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-04-14 00:08:51,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:08:51,707 INFO L116 PetriNetUnfolderBase]: 581/1010 cut-off events. [2025-04-14 00:08:51,708 INFO L117 PetriNetUnfolderBase]: For 628/628 co-relation queries the response was YES. [2025-04-14 00:08:51,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2470 conditions, 1010 events. 581/1010 cut-off events. For 628/628 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4758 event pairs, 156 based on Foata normal form. 44/1053 useless extension candidates. Maximal degree in co-relation 2454. Up to 520 conditions per place. [2025-04-14 00:08:51,712 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 32 selfloop transitions, 6 changer transitions 16/56 dead transitions. [2025-04-14 00:08:51,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 56 transitions, 275 flow [2025-04-14 00:08:51,712 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:08:51,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:08:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2025-04-14 00:08:51,713 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.592 [2025-04-14 00:08:51,713 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 82 flow. Second operand 5 states and 74 transitions. [2025-04-14 00:08:51,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 56 transitions, 275 flow [2025-04-14 00:08:51,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 56 transitions, 257 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-04-14 00:08:51,720 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 107 flow [2025-04-14 00:08:51,720 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2025-04-14 00:08:51,722 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2025-04-14 00:08:51,722 INFO L485 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 107 flow [2025-04-14 00:08:51,722 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 00:08:51,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:08:51,722 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:08:51,723 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:08:51,723 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-14 00:08:51,723 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:08:51,723 INFO L85 PathProgramCache]: Analyzing trace with hash 890696437, now seen corresponding path program 1 times [2025-04-14 00:08:51,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:08:51,723 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577971505] [2025-04-14 00:08:51,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:08:51,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:08:51,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-14 00:08:51,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 00:08:51,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:08:51,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:08:51,879 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 00:08:51,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:08:51,879 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577971505] [2025-04-14 00:08:51,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577971505] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:08:51,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:08:51,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:08:51,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571991314] [2025-04-14 00:08:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:08:51,879 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:08:51,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:08:51,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:08:51,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:08:51,880 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-04-14 00:08:51,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 00:08:51,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:08:51,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-04-14 00:08:51,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:08:52,044 INFO L116 PetriNetUnfolderBase]: 642/1123 cut-off events. [2025-04-14 00:08:52,044 INFO L117 PetriNetUnfolderBase]: For 914/914 co-relation queries the response was YES. [2025-04-14 00:08:52,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 1123 events. 642/1123 cut-off events. For 914/914 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5683 event pairs, 93 based on Foata normal form. 45/1167 useless extension candidates. Maximal degree in co-relation 2738. Up to 516 conditions per place. [2025-04-14 00:08:52,048 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 30 selfloop transitions, 3 changer transitions 27/62 dead transitions. [2025-04-14 00:08:52,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 344 flow [2025-04-14 00:08:52,049 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:08:52,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:08:52,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2025-04-14 00:08:52,050 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2025-04-14 00:08:52,050 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 107 flow. Second operand 6 states and 82 transitions. [2025-04-14 00:08:52,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 344 flow [2025-04-14 00:08:52,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 62 transitions, 330 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-04-14 00:08:52,057 INFO L231 Difference]: Finished difference. Result has 42 places, 22 transitions, 92 flow [2025-04-14 00:08:52,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=22} [2025-04-14 00:08:52,058 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2025-04-14 00:08:52,058 INFO L485 AbstractCegarLoop]: Abstraction has has 42 places, 22 transitions, 92 flow [2025-04-14 00:08:52,058 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 00:08:52,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:08:52,059 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:08:52,059 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 00:08:52,059 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-14 00:08:52,059 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:08:52,059 INFO L85 PathProgramCache]: Analyzing trace with hash -717220469, now seen corresponding path program 1 times [2025-04-14 00:08:52,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:08:52,060 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40884495] [2025-04-14 00:08:52,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:08:52,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:08:52,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-14 00:08:52,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-14 00:08:52,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:08:52,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:08:52,151 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 00:08:52,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:08:52,151 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40884495] [2025-04-14 00:08:52,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40884495] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:08:52,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:08:52,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:08:52,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480569177] [2025-04-14 00:08:52,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:08:52,152 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:08:52,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:08:52,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:08:52,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:08:52,152 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-04-14 00:08:52,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 22 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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 00:08:52,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:08:52,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-04-14 00:08:52,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:08:52,304 INFO L116 PetriNetUnfolderBase]: 173/335 cut-off events. [2025-04-14 00:08:52,304 INFO L117 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2025-04-14 00:08:52,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 335 events. 173/335 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1229 event pairs, 47 based on Foata normal form. 26/360 useless extension candidates. Maximal degree in co-relation 873. Up to 153 conditions per place. [2025-04-14 00:08:52,310 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 23 selfloop transitions, 3 changer transitions 12/40 dead transitions. [2025-04-14 00:08:52,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 230 flow [2025-04-14 00:08:52,314 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 00:08:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 00:08:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2025-04-14 00:08:52,318 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.56 [2025-04-14 00:08:52,318 INFO L175 Difference]: Start difference. First operand has 42 places, 22 transitions, 92 flow. Second operand 4 states and 56 transitions. [2025-04-14 00:08:52,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 230 flow [2025-04-14 00:08:52,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 187 flow, removed 11 selfloop flow, removed 9 redundant places. [2025-04-14 00:08:52,332 INFO L231 Difference]: Finished difference. Result has 36 places, 22 transitions, 79 flow [2025-04-14 00:08:52,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2025-04-14 00:08:52,332 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2025-04-14 00:08:52,332 INFO L485 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 79 flow [2025-04-14 00:08:52,333 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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 00:08:52,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:08:52,333 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:08:52,333 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 00:08:52,333 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-14 00:08:52,336 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:08:52,336 INFO L85 PathProgramCache]: Analyzing trace with hash -39442402, now seen corresponding path program 1 times [2025-04-14 00:08:52,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:08:52,336 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346184403] [2025-04-14 00:08:52,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:08:52,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:08:52,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-14 00:08:52,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-14 00:08:52,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:08:52,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:08:52,641 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 00:08:52,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:08:52,641 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346184403] [2025-04-14 00:08:52,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346184403] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:08:52,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:08:52,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:08:52,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739460334] [2025-04-14 00:08:52,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:08:52,642 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:08:52,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:08:52,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:08:52,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:08:52,642 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2025-04-14 00:08:52,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:08:52,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:08:52,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2025-04-14 00:08:52,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:08:52,757 INFO L116 PetriNetUnfolderBase]: 77/161 cut-off events. [2025-04-14 00:08:52,757 INFO L117 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2025-04-14 00:08:52,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 161 events. 77/161 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 449 event pairs, 25 based on Foata normal form. 12/172 useless extension candidates. Maximal degree in co-relation 413. Up to 62 conditions per place. [2025-04-14 00:08:52,758 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2025-04-14 00:08:52,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 159 flow [2025-04-14 00:08:52,759 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:08:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:08:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 51 transitions. [2025-04-14 00:08:52,759 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.408 [2025-04-14 00:08:52,760 INFO L175 Difference]: Start difference. First operand has 36 places, 22 transitions, 79 flow. Second operand 5 states and 51 transitions. [2025-04-14 00:08:52,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 159 flow [2025-04-14 00:08:52,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 138 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-04-14 00:08:52,762 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2025-04-14 00:08:52,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2025-04-14 00:08:52,763 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2025-04-14 00:08:52,763 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2025-04-14 00:08:52,763 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:08:52,765 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-14 00:08:52,766 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-14 00:08:52,766 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-14 00:08:52,766 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 00:08:52,766 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-04-14 00:08:52,770 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:08:52,770 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:08:52,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:08:52 BasicIcfg [2025-04-14 00:08:52,778 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:08:52,778 INFO L158 Benchmark]: Toolchain (without parser) took 3580.77ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 100.6MB in the end (delta: -1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:08:52,778 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 159.4MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:08:52,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 450.12ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 75.2MB in the end (delta: 23.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-14 00:08:52,779 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.89ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 73.1MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:08:52,779 INFO L158 Benchmark]: Boogie Preprocessor took 28.54ms. Allocated memory is still 142.6MB. Free memory was 73.1MB in the beginning and 71.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:08:52,779 INFO L158 Benchmark]: IcfgBuilder took 325.83ms. Allocated memory is still 142.6MB. Free memory was 71.5MB in the beginning and 51.1MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-14 00:08:52,779 INFO L158 Benchmark]: TraceAbstraction took 2731.16ms. Allocated memory is still 142.6MB. Free memory was 50.6MB in the beginning and 100.6MB in the end (delta: -50.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:08:52,782 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 159.4MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 450.12ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 75.2MB in the end (delta: 23.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.89ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 73.1MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.54ms. Allocated memory is still 142.6MB. Free memory was 73.1MB in the beginning and 71.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 325.83ms. Allocated memory is still 142.6MB. Free memory was 71.5MB in the beginning and 51.1MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2731.16ms. Allocated memory is still 142.6MB. Free memory was 50.6MB in the beginning and 100.6MB in the end (delta: -50.0MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 42 locations, 39 edges, 3 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: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 173 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 173 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 410 IncrementalHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 410 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=3, InterpolantAutomatonStates: 30, 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, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-14 00:08:52,801 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...