/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/safe003_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:08:14,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:08:14,685 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 00:08:14,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:08:14,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:08:14,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:08:14,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:08:14,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:08:14,749 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:08:14,749 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:08:14,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:08:14,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:08:14,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:08:14,749 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:08:14,749 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:08:14,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:08:14,750 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:08:14,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:08:14,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:08:14,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:08:14,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:08:14,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:08:14,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:08:14,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:08:14,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:08:14,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:08:14,751 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:08:14,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:08:14,751 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:08:14,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:08:14,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:08:14,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:08:14,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:08:14,756 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 00:08:15,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:08:15,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:08:15,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:08:15,200 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:08:15,200 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:08:15,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.i [2025-04-14 00:08:17,094 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac511b32d/d923c223737a4504a4088d5fe8774f8b/FLAG69adead3f [2025-04-14 00:08:17,559 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:08:17,560 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.i [2025-04-14 00:08:17,583 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac511b32d/d923c223737a4504a4088d5fe8774f8b/FLAG69adead3f [2025-04-14 00:08:18,096 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac511b32d/d923c223737a4504a4088d5fe8774f8b [2025-04-14 00:08:18,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:08:18,099 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:08:18,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:08:18,106 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:08:18,114 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:08:18,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:18,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a777411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18, skipping insertion in model container [2025-04-14 00:08:18,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:18,193 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:08:18,495 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/safe003_tso.i[945,958] [2025-04-14 00:08:18,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:08:18,783 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:08:18,803 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/safe003_tso.i[945,958] [2025-04-14 00:08:18,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:08:18,960 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:08:18,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18 WrapperNode [2025-04-14 00:08:18,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:08:18,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:08:18,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:08:18,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:08:18,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:19,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:19,043 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-04-14 00:08:19,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:08:19,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:08:19,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:08:19,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:08:19,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:19,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:19,063 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:19,106 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 00:08:19,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:19,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:19,121 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:19,122 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:19,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:19,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:19,132 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:08:19,133 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:08:19,133 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:08:19,133 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:08:19,137 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (1/1) ... [2025-04-14 00:08:19,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:08:19,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:08:19,194 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 00:08:19,204 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 00:08:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 00:08:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:08:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-14 00:08:19,228 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-14 00:08:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-14 00:08:19,228 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-14 00:08:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-04-14 00:08:19,228 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-04-14 00:08:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:08:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 00:08:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:08:19,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:08:19,229 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 00:08:19,421 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:08:19,426 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:08:19,693 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:08:19,698 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:08:19,698 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:08:19,993 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:08:19,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:08:19 BoogieIcfgContainer [2025-04-14 00:08:19,994 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:08:19,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:08:19,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:08:20,000 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:08:20,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:08:18" (1/3) ... [2025-04-14 00:08:20,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127f0e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:08:20, skipping insertion in model container [2025-04-14 00:08:20,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:08:18" (2/3) ... [2025-04-14 00:08:20,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127f0e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:08:20, skipping insertion in model container [2025-04-14 00:08:20,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:08:19" (3/3) ... [2025-04-14 00:08:20,002 INFO L128 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2025-04-14 00:08:20,014 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:08:20,016 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe003_tso.i that has 4 procedures, 35 locations, 31 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-14 00:08:20,016 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:08:20,108 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-14 00:08:20,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 34 transitions, 80 flow [2025-04-14 00:08:20,221 INFO L116 PetriNetUnfolderBase]: 0/31 cut-off events. [2025-04-14 00:08:20,223 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:08:20,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-04-14 00:08:20,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 34 transitions, 80 flow [2025-04-14 00:08:20,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 30 transitions, 69 flow [2025-04-14 00:08:20,250 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:08:20,259 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;@73656d8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:08:20,259 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-14 00:08:20,280 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:08:20,280 INFO L116 PetriNetUnfolderBase]: 0/29 cut-off events. [2025-04-14 00:08:20,280 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:08:20,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:08:20,281 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:08:20,281 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 00:08:20,291 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:08:20,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1068960998, now seen corresponding path program 1 times [2025-04-14 00:08:20,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:08:20,310 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142355421] [2025-04-14 00:08:20,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:08:20,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:08:20,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-14 00:08:20,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-14 00:08:20,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:08:20,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:08:21,208 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 00:08:21,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:08:21,209 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142355421] [2025-04-14 00:08:21,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142355421] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:08:21,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:08:21,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 00:08:21,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387583370] [2025-04-14 00:08:21,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:08:21,219 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:08:21,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:08:21,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:08:21,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:08:21,274 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2025-04-14 00:08:21,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 00:08:21,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:08:21,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2025-04-14 00:08:21,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:08:23,250 INFO L116 PetriNetUnfolderBase]: 7143/10393 cut-off events. [2025-04-14 00:08:23,251 INFO L117 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2025-04-14 00:08:23,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20908 conditions, 10393 events. 7143/10393 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 59074 event pairs, 2263 based on Foata normal form. 391/10776 useless extension candidates. Maximal degree in co-relation 20897. Up to 4930 conditions per place. [2025-04-14 00:08:23,393 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 45 selfloop transitions, 6 changer transitions 31/85 dead transitions. [2025-04-14 00:08:23,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 85 transitions, 349 flow [2025-04-14 00:08:23,396 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:08:23,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:08:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2025-04-14 00:08:23,417 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6705882352941176 [2025-04-14 00:08:23,420 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 69 flow. Second operand 5 states and 114 transitions. [2025-04-14 00:08:23,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 85 transitions, 349 flow [2025-04-14 00:08:23,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 85 transitions, 344 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-14 00:08:23,437 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 126 flow [2025-04-14 00:08:23,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2025-04-14 00:08:23,456 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2025-04-14 00:08:23,456 INFO L485 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 126 flow [2025-04-14 00:08:23,456 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 00:08:23,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:08:23,456 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:08:23,457 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:08:23,457 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 00:08:23,457 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:08:23,457 INFO L85 PathProgramCache]: Analyzing trace with hash 775252711, now seen corresponding path program 1 times [2025-04-14 00:08:23,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:08:23,457 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896498797] [2025-04-14 00:08:23,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:08:23,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:08:23,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-14 00:08:23,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 00:08:23,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:08:23,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:08:23,862 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 00:08:23,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:08:23,862 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896498797] [2025-04-14 00:08:23,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896498797] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:08:23,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:08:23,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:08:23,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053755532] [2025-04-14 00:08:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:08:23,864 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:08:23,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:08:23,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:08:23,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:08:23,864 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2025-04-14 00:08:23,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:08:23,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:08:23,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2025-04-14 00:08:23,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:08:25,222 INFO L116 PetriNetUnfolderBase]: 6594/9678 cut-off events. [2025-04-14 00:08:25,222 INFO L117 PetriNetUnfolderBase]: For 5566/5566 co-relation queries the response was YES. [2025-04-14 00:08:25,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24493 conditions, 9678 events. 6594/9678 cut-off events. For 5566/5566 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 52698 event pairs, 1017 based on Foata normal form. 355/10020 useless extension candidates. Maximal degree in co-relation 24479. Up to 4221 conditions per place. [2025-04-14 00:08:25,273 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 54 selfloop transitions, 7 changer transitions 42/106 dead transitions. [2025-04-14 00:08:25,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 106 transitions, 548 flow [2025-04-14 00:08:25,274 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:08:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:08:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2025-04-14 00:08:25,275 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6008403361344538 [2025-04-14 00:08:25,275 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 126 flow. Second operand 7 states and 143 transitions. [2025-04-14 00:08:25,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 106 transitions, 548 flow [2025-04-14 00:08:25,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 106 transitions, 512 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-04-14 00:08:25,302 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 172 flow [2025-04-14 00:08:25,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=172, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2025-04-14 00:08:25,302 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2025-04-14 00:08:25,303 INFO L485 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 172 flow [2025-04-14 00:08:25,303 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:08:25,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:08:25,303 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:08:25,303 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:08:25,303 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 00:08:25,304 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:08:25,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1859477972, now seen corresponding path program 1 times [2025-04-14 00:08:25,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:08:25,304 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523393892] [2025-04-14 00:08:25,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:08:25,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:08:25,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-14 00:08:25,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-14 00:08:25,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:08:25,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:08:25,539 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 00:08:25,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:08:25,539 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523393892] [2025-04-14 00:08:25,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523393892] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:08:25,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:08:25,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 00:08:25,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825296578] [2025-04-14 00:08:25,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:08:25,540 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:08:25,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:08:25,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:08:25,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:08:25,540 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2025-04-14 00:08:25,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 00:08:25,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:08:25,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2025-04-14 00:08:25,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:08:26,897 INFO L116 PetriNetUnfolderBase]: 6050/8876 cut-off events. [2025-04-14 00:08:26,897 INFO L117 PetriNetUnfolderBase]: For 14220/14220 co-relation queries the response was YES. [2025-04-14 00:08:26,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23995 conditions, 8876 events. 6050/8876 cut-off events. For 14220/14220 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 47482 event pairs, 2416 based on Foata normal form. 295/9158 useless extension candidates. Maximal degree in co-relation 23975. Up to 6019 conditions per place. [2025-04-14 00:08:26,972 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 47 selfloop transitions, 3 changer transitions 30/83 dead transitions. [2025-04-14 00:08:26,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 508 flow [2025-04-14 00:08:26,972 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 00:08:26,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 00:08:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2025-04-14 00:08:26,973 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2025-04-14 00:08:26,973 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 172 flow. Second operand 5 states and 98 transitions. [2025-04-14 00:08:26,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 508 flow [2025-04-14 00:08:27,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 499 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-04-14 00:08:27,012 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 178 flow [2025-04-14 00:08:27,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2025-04-14 00:08:27,013 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2025-04-14 00:08:27,013 INFO L485 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 178 flow [2025-04-14 00:08:27,013 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 00:08:27,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:08:27,013 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 00:08:27,013 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:08:27,014 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:08:27,014 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:08:27,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1930029018, now seen corresponding path program 1 times [2025-04-14 00:08:27,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:08:27,014 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982341139] [2025-04-14 00:08:27,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:08:27,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:08:27,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-14 00:08:27,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-14 00:08:27,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:08:27,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:08:27,236 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 00:08:27,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:08:27,236 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982341139] [2025-04-14 00:08:27,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982341139] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:08:27,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:08:27,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:08:27,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813648132] [2025-04-14 00:08:27,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:08:27,237 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:08:27,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:08:27,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:08:27,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:08:27,237 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2025-04-14 00:08:27,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 00:08:27,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:08:27,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2025-04-14 00:08:27,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:08:28,608 INFO L116 PetriNetUnfolderBase]: 8990/13079 cut-off events. [2025-04-14 00:08:28,608 INFO L117 PetriNetUnfolderBase]: For 12753/12753 co-relation queries the response was YES. [2025-04-14 00:08:28,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34884 conditions, 13079 events. 8990/13079 cut-off events. For 12753/12753 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 75740 event pairs, 1609 based on Foata normal form. 220/13296 useless extension candidates. Maximal degree in co-relation 34861. Up to 6104 conditions per place. [2025-04-14 00:08:28,706 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 57 selfloop transitions, 8 changer transitions 46/114 dead transitions. [2025-04-14 00:08:28,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 114 transitions, 700 flow [2025-04-14 00:08:28,707 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:08:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:08:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2025-04-14 00:08:28,711 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5966386554621849 [2025-04-14 00:08:28,712 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 178 flow. Second operand 7 states and 142 transitions. [2025-04-14 00:08:28,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 114 transitions, 700 flow [2025-04-14 00:08:28,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 114 transitions, 645 flow, removed 18 selfloop flow, removed 7 redundant places. [2025-04-14 00:08:28,774 INFO L231 Difference]: Finished difference. Result has 56 places, 34 transitions, 159 flow [2025-04-14 00:08:28,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=56, PETRI_TRANSITIONS=34} [2025-04-14 00:08:28,775 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2025-04-14 00:08:28,775 INFO L485 AbstractCegarLoop]: Abstraction has has 56 places, 34 transitions, 159 flow [2025-04-14 00:08:28,775 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 00:08:28,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:08:28,775 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:08:28,775 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 00:08:28,775 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:08:28,777 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:08:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash -981235067, now seen corresponding path program 1 times [2025-04-14 00:08:28,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:08:28,777 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027301764] [2025-04-14 00:08:28,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:08:28,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:08:28,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-14 00:08:28,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-14 00:08:28,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:08:28,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:08:29,016 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 00:08:29,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:08:29,017 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027301764] [2025-04-14 00:08:29,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027301764] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:08:29,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:08:29,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:08:29,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977367263] [2025-04-14 00:08:29,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:08:29,021 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 00:08:29,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:08:29,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 00:08:29,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 00:08:29,021 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2025-04-14 00:08:29,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 34 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 00:08:29,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:08:29,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2025-04-14 00:08:29,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:08:29,530 INFO L116 PetriNetUnfolderBase]: 3498/5202 cut-off events. [2025-04-14 00:08:29,530 INFO L117 PetriNetUnfolderBase]: For 4981/4981 co-relation queries the response was YES. [2025-04-14 00:08:29,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13265 conditions, 5202 events. 3498/5202 cut-off events. For 4981/4981 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 26633 event pairs, 388 based on Foata normal form. 100/5301 useless extension candidates. Maximal degree in co-relation 13243. Up to 2188 conditions per place. [2025-04-14 00:08:29,552 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 36 selfloop transitions, 1 changer transitions 54/94 dead transitions. [2025-04-14 00:08:29,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 94 transitions, 491 flow [2025-04-14 00:08:29,557 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 00:08:29,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 00:08:29,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2025-04-14 00:08:29,558 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5630252100840336 [2025-04-14 00:08:29,558 INFO L175 Difference]: Start difference. First operand has 56 places, 34 transitions, 159 flow. Second operand 7 states and 134 transitions. [2025-04-14 00:08:29,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 94 transitions, 491 flow [2025-04-14 00:08:29,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 94 transitions, 446 flow, removed 11 selfloop flow, removed 9 redundant places. [2025-04-14 00:08:29,593 INFO L231 Difference]: Finished difference. Result has 54 places, 30 transitions, 104 flow [2025-04-14 00:08:29,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=30} [2025-04-14 00:08:29,593 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2025-04-14 00:08:29,593 INFO L485 AbstractCegarLoop]: Abstraction has has 54 places, 30 transitions, 104 flow [2025-04-14 00:08:29,594 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 00:08:29,594 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:08:29,594 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:08:29,594 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 00:08:29,594 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 00:08:29,594 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:08:29,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1660066705, now seen corresponding path program 1 times [2025-04-14 00:08:29,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:08:29,594 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935795234] [2025-04-14 00:08:29,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:08:29,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:08:29,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 00:08:29,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 00:08:29,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:08:29,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:08:29,909 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 00:08:29,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:08:29,909 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935795234] [2025-04-14 00:08:29,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935795234] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:08:29,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:08:29,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 00:08:29,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031735156] [2025-04-14 00:08:29,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:08:29,910 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 00:08:29,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:08:29,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 00:08:29,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 00:08:29,911 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 34 [2025-04-14 00:08:29,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 30 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 00:08:29,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:08:29,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 34 [2025-04-14 00:08:29,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:08:30,349 INFO L116 PetriNetUnfolderBase]: 1444/2173 cut-off events. [2025-04-14 00:08:30,349 INFO L117 PetriNetUnfolderBase]: For 1185/1185 co-relation queries the response was YES. [2025-04-14 00:08:30,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5118 conditions, 2173 events. 1444/2173 cut-off events. For 1185/1185 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9364 event pairs, 400 based on Foata normal form. 80/2252 useless extension candidates. Maximal degree in co-relation 5108. Up to 1260 conditions per place. [2025-04-14 00:08:30,361 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2025-04-14 00:08:30,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 264 flow [2025-04-14 00:08:30,362 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 00:08:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 00:08:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2025-04-14 00:08:30,363 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.44607843137254904 [2025-04-14 00:08:30,363 INFO L175 Difference]: Start difference. First operand has 54 places, 30 transitions, 104 flow. Second operand 6 states and 91 transitions. [2025-04-14 00:08:30,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 264 flow [2025-04-14 00:08:30,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 249 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-04-14 00:08:30,364 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2025-04-14 00:08:30,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2025-04-14 00:08:30,365 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2025-04-14 00:08:30,365 INFO L485 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2025-04-14 00:08:30,365 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 00:08:30,375 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-14 00:08:30,375 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-14 00:08:30,375 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-14 00:08:30,375 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-14 00:08:30,375 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 00:08:30,375 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-04-14 00:08:30,382 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:08:30,382 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:08:30,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:08:30 BasicIcfg [2025-04-14 00:08:30,397 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:08:30,397 INFO L158 Benchmark]: Toolchain (without parser) took 12298.34ms. Allocated memory was 142.6MB in the beginning and 771.8MB in the end (delta: 629.1MB). Free memory was 101.6MB in the beginning and 367.1MB in the end (delta: -265.5MB). Peak memory consumption was 363.5MB. Max. memory is 8.0GB. [2025-04-14 00:08:30,398 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 142.6MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:08:30,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 861.04ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 77.8MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-14 00:08:30,398 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.29ms. Allocated memory is still 142.6MB. Free memory was 77.8MB in the beginning and 76.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:08:30,398 INFO L158 Benchmark]: Boogie Preprocessor took 83.39ms. Allocated memory is still 142.6MB. Free memory was 76.0MB in the beginning and 74.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:08:30,398 INFO L158 Benchmark]: IcfgBuilder took 861.16ms. Allocated memory is still 142.6MB. Free memory was 74.2MB in the beginning and 50.5MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-14 00:08:30,398 INFO L158 Benchmark]: TraceAbstraction took 10401.02ms. Allocated memory was 142.6MB in the beginning and 771.8MB in the end (delta: 629.1MB). Free memory was 50.1MB in the beginning and 367.1MB in the end (delta: -317.0MB). Peak memory consumption was 313.1MB. Max. memory is 8.0GB. [2025-04-14 00:08:30,399 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 142.6MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 861.04ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 77.8MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 78.29ms. Allocated memory is still 142.6MB. Free memory was 77.8MB in the beginning and 76.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 83.39ms. Allocated memory is still 142.6MB. Free memory was 76.0MB in the beginning and 74.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 861.16ms. Allocated memory is still 142.6MB. Free memory was 74.2MB in the beginning and 50.5MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 10401.02ms. Allocated memory was 142.6MB in the beginning and 771.8MB in the end (delta: 629.1MB). Free memory was 50.1MB in the beginning and 367.1MB in the end (delta: -317.0MB). Peak memory consumption was 313.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 59 locations, 55 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 356 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 356 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 793 IncrementalHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 0 mSDtfsCounter, 793 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=3, InterpolantAutomatonStates: 37, 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, 2.0s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 478 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 00:08:30,438 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...