/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 11:48:25,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 11:48:25,321 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-10 11:48:25,345 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 11:48:25,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 11:48:25,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 11:48:25,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 11:48:25,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 11:48:25,347 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 11:48:25,350 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 11:48:25,350 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 11:48:25,350 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 11:48:25,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 11:48:25,351 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 11:48:25,351 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 11:48:25,352 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 11:48:25,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 11:48:25,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 11:48:25,352 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 11:48:25,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 11:48:25,352 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 11:48:25,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 11:48:25,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 11:48:25,354 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 11:48:25,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 11:48:25,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:48:25,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 11:48:25,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 11:48:25,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 11:48:25,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 11:48:25,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 11:48:25,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 11:48:25,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 11:48:25,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 11:48:25,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 11:48:25,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 11:48:25,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 11:48:25,547 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 11:48:25,547 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 11:48:25,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-10 11:48:26,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 11:48:27,069 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 11:48:27,069 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-10 11:48:27,084 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e7395a8e/7b11c5dd46694f38982f1501a9e46ef2/FLAG277dcf9ce [2023-11-10 11:48:27,093 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e7395a8e/7b11c5dd46694f38982f1501a9e46ef2 [2023-11-10 11:48:27,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 11:48:27,096 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 11:48:27,097 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 11:48:27,097 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 11:48:27,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 11:48:27,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f17819d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27, skipping insertion in model container [2023-11-10 11:48:27,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,131 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 11:48:27,234 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-11-10 11:48:27,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:48:27,332 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 11:48:27,343 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-11-10 11:48:27,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:48:27,388 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:48:27,388 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:48:27,393 INFO L206 MainTranslator]: Completed translation [2023-11-10 11:48:27,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27 WrapperNode [2023-11-10 11:48:27,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 11:48:27,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 11:48:27,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 11:48:27,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 11:48:27,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,441 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-10 11:48:27,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 11:48:27,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 11:48:27,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 11:48:27,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 11:48:27,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,467 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 11:48:27,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 11:48:27,470 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 11:48:27,470 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 11:48:27,470 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27" (1/1) ... [2023-11-10 11:48:27,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:48:27,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 11:48:27,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-10 11:48:27,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-10 11:48:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 11:48:27,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 11:48:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 11:48:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 11:48:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 11:48:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-10 11:48:27,532 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-10 11:48:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-10 11:48:27,532 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-10 11:48:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-10 11:48:27,533 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-10 11:48:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 11:48:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 11:48:27,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 11:48:27,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 11:48:27,534 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 11:48:27,622 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 11:48:27,624 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 11:48:27,738 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 11:48:27,744 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 11:48:27,744 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-10 11:48:27,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:27 BoogieIcfgContainer [2023-11-10 11:48:27,746 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 11:48:27,748 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 11:48:27,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 11:48:27,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 11:48:27,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:48:27" (1/3) ... [2023-11-10 11:48:27,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534a7139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:48:27, skipping insertion in model container [2023-11-10 11:48:27,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:48:27" (2/3) ... [2023-11-10 11:48:27,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534a7139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:48:27, skipping insertion in model container [2023-11-10 11:48:27,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:48:27" (3/3) ... [2023-11-10 11:48:27,752 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-11-10 11:48:27,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 11:48:27,764 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 11:48:27,764 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 11:48:27,816 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:48:27,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 95 transitions, 202 flow [2023-11-10 11:48:27,963 INFO L124 PetriNetUnfolderBase]: 2/92 cut-off events. [2023-11-10 11:48:27,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:48:27,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 2/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-11-10 11:48:27,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 95 transitions, 202 flow [2023-11-10 11:48:27,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 77 transitions, 163 flow [2023-11-10 11:48:27,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:48:27,983 INFO L357 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, mHoare=false, 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;@4ac58a61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:48:27,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-10 11:48:28,012 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:48:28,012 INFO L124 PetriNetUnfolderBase]: 1/76 cut-off events. [2023-11-10 11:48:28,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:48:28,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:28,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:28,014 INFO L420 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)] === [2023-11-10 11:48:28,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:28,018 INFO L85 PathProgramCache]: Analyzing trace with hash 763716873, now seen corresponding path program 1 times [2023-11-10 11:48:28,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:28,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057392655] [2023-11-10 11:48:28,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:28,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:28,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:28,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057392655] [2023-11-10 11:48:28,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057392655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:28,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:28,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:28,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124165543] [2023-11-10 11:48:28,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:28,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:28,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:28,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:28,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:28,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 95 [2023-11-10 11:48:28,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 163 flow. Second operand has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 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) [2023-11-10 11:48:28,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:28,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 95 [2023-11-10 11:48:28,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:29,005 INFO L124 PetriNetUnfolderBase]: 192/555 cut-off events. [2023-11-10 11:48:29,005 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-10 11:48:29,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 555 events. 192/555 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2984 event pairs, 18 based on Foata normal form. 35/565 useless extension candidates. Maximal degree in co-relation 892. Up to 68 conditions per place. [2023-11-10 11:48:29,013 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 21 selfloop transitions, 5 changer transitions 42/126 dead transitions. [2023-11-10 11:48:29,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 126 transitions, 397 flow [2023-11-10 11:48:29,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:48:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:48:29,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 997 transitions. [2023-11-10 11:48:29,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8072874493927126 [2023-11-10 11:48:29,030 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 997 transitions. [2023-11-10 11:48:29,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 997 transitions. [2023-11-10 11:48:29,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:29,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 997 transitions. [2023-11-10 11:48:29,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.6923076923077) internal successors, (997), 13 states have internal predecessors, (997), 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) [2023-11-10 11:48:29,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 95.0) internal successors, (1330), 14 states have internal predecessors, (1330), 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) [2023-11-10 11:48:29,043 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 95.0) internal successors, (1330), 14 states have internal predecessors, (1330), 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) [2023-11-10 11:48:29,044 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 163 flow. Second operand 13 states and 997 transitions. [2023-11-10 11:48:29,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 126 transitions, 397 flow [2023-11-10 11:48:29,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 126 transitions, 394 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-10 11:48:29,064 INFO L231 Difference]: Finished difference. Result has 107 places, 79 transitions, 230 flow [2023-11-10 11:48:29,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=230, PETRI_PLACES=107, PETRI_TRANSITIONS=79} [2023-11-10 11:48:29,067 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 21 predicate places. [2023-11-10 11:48:29,067 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 79 transitions, 230 flow [2023-11-10 11:48:29,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 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) [2023-11-10 11:48:29,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:29,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:29,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 11:48:29,068 INFO L420 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)] === [2023-11-10 11:48:29,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:29,069 INFO L85 PathProgramCache]: Analyzing trace with hash -210783028, now seen corresponding path program 1 times [2023-11-10 11:48:29,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:29,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961638925] [2023-11-10 11:48:29,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:29,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:29,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:29,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961638925] [2023-11-10 11:48:29,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961638925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:29,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:29,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:48:29,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781948041] [2023-11-10 11:48:29,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:29,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:48:29,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:29,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:48:29,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:48:29,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 95 [2023-11-10 11:48:29,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 79 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 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) [2023-11-10 11:48:29,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:29,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 95 [2023-11-10 11:48:29,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:29,429 INFO L124 PetriNetUnfolderBase]: 461/1068 cut-off events. [2023-11-10 11:48:29,430 INFO L125 PetriNetUnfolderBase]: For 297/316 co-relation queries the response was YES. [2023-11-10 11:48:29,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 1068 events. 461/1068 cut-off events. For 297/316 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7279 event pairs, 5 based on Foata normal form. 6/948 useless extension candidates. Maximal degree in co-relation 2069. Up to 357 conditions per place. [2023-11-10 11:48:29,436 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 27 selfloop transitions, 15 changer transitions 6/111 dead transitions. [2023-11-10 11:48:29,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 111 transitions, 394 flow [2023-11-10 11:48:29,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 11:48:29,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 11:48:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 810 transitions. [2023-11-10 11:48:29,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8526315789473684 [2023-11-10 11:48:29,438 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 810 transitions. [2023-11-10 11:48:29,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 810 transitions. [2023-11-10 11:48:29,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:29,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 810 transitions. [2023-11-10 11:48:29,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 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) [2023-11-10 11:48:29,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 95.0) internal successors, (1045), 11 states have internal predecessors, (1045), 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) [2023-11-10 11:48:29,442 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 95.0) internal successors, (1045), 11 states have internal predecessors, (1045), 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) [2023-11-10 11:48:29,443 INFO L175 Difference]: Start difference. First operand has 107 places, 79 transitions, 230 flow. Second operand 10 states and 810 transitions. [2023-11-10 11:48:29,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 111 transitions, 394 flow [2023-11-10 11:48:29,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 111 transitions, 374 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-10 11:48:29,450 INFO L231 Difference]: Finished difference. Result has 109 places, 92 transitions, 319 flow [2023-11-10 11:48:29,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=319, PETRI_PLACES=109, PETRI_TRANSITIONS=92} [2023-11-10 11:48:29,451 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 23 predicate places. [2023-11-10 11:48:29,451 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 92 transitions, 319 flow [2023-11-10 11:48:29,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 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) [2023-11-10 11:48:29,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:29,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:29,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 11:48:29,453 INFO L420 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)] === [2023-11-10 11:48:29,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:29,454 INFO L85 PathProgramCache]: Analyzing trace with hash -575173235, now seen corresponding path program 1 times [2023-11-10 11:48:29,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:29,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976247822] [2023-11-10 11:48:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:29,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:29,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:29,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976247822] [2023-11-10 11:48:29,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976247822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:29,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:29,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:29,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105455548] [2023-11-10 11:48:29,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:29,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:29,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:29,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:29,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:29,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 95 [2023-11-10 11:48:29,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 92 transitions, 319 flow. Second operand has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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) [2023-11-10 11:48:29,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:29,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 95 [2023-11-10 11:48:29,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:29,826 INFO L124 PetriNetUnfolderBase]: 397/982 cut-off events. [2023-11-10 11:48:29,826 INFO L125 PetriNetUnfolderBase]: For 2397/3004 co-relation queries the response was YES. [2023-11-10 11:48:29,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3374 conditions, 982 events. 397/982 cut-off events. For 2397/3004 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6598 event pairs, 0 based on Foata normal form. 96/995 useless extension candidates. Maximal degree in co-relation 3327. Up to 421 conditions per place. [2023-11-10 11:48:29,844 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 26 selfloop transitions, 28 changer transitions 13/130 dead transitions. [2023-11-10 11:48:29,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 130 transitions, 689 flow [2023-11-10 11:48:29,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:48:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:48:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1051 transitions. [2023-11-10 11:48:29,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8510121457489879 [2023-11-10 11:48:29,847 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1051 transitions. [2023-11-10 11:48:29,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1051 transitions. [2023-11-10 11:48:29,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:29,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1051 transitions. [2023-11-10 11:48:29,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 80.84615384615384) internal successors, (1051), 13 states have internal predecessors, (1051), 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) [2023-11-10 11:48:29,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 95.0) internal successors, (1330), 14 states have internal predecessors, (1330), 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) [2023-11-10 11:48:29,851 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 95.0) internal successors, (1330), 14 states have internal predecessors, (1330), 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) [2023-11-10 11:48:29,851 INFO L175 Difference]: Start difference. First operand has 109 places, 92 transitions, 319 flow. Second operand 13 states and 1051 transitions. [2023-11-10 11:48:29,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 130 transitions, 689 flow [2023-11-10 11:48:29,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 130 transitions, 681 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-10 11:48:29,859 INFO L231 Difference]: Finished difference. Result has 123 places, 109 transitions, 537 flow [2023-11-10 11:48:29,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=537, PETRI_PLACES=123, PETRI_TRANSITIONS=109} [2023-11-10 11:48:29,860 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 37 predicate places. [2023-11-10 11:48:29,860 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 109 transitions, 537 flow [2023-11-10 11:48:29,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 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) [2023-11-10 11:48:29,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:29,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:29,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 11:48:29,861 INFO L420 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)] === [2023-11-10 11:48:29,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:29,861 INFO L85 PathProgramCache]: Analyzing trace with hash 150137639, now seen corresponding path program 1 times [2023-11-10 11:48:29,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:29,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900027836] [2023-11-10 11:48:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:29,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:30,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:30,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900027836] [2023-11-10 11:48:30,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900027836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:30,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:30,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:30,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033765546] [2023-11-10 11:48:30,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:30,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:30,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:30,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:30,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 95 [2023-11-10 11:48:30,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 109 transitions, 537 flow. Second operand has 7 states, 7 states have (on average 73.42857142857143) internal successors, (514), 7 states have internal predecessors, (514), 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) [2023-11-10 11:48:30,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:30,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 95 [2023-11-10 11:48:30,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:30,313 INFO L124 PetriNetUnfolderBase]: 300/1579 cut-off events. [2023-11-10 11:48:30,313 INFO L125 PetriNetUnfolderBase]: For 3777/4118 co-relation queries the response was YES. [2023-11-10 11:48:30,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 1579 events. 300/1579 cut-off events. For 3777/4118 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 15352 event pairs, 11 based on Foata normal form. 15/1535 useless extension candidates. Maximal degree in co-relation 4898. Up to 357 conditions per place. [2023-11-10 11:48:30,322 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 21 selfloop transitions, 10 changer transitions 13/132 dead transitions. [2023-11-10 11:48:30,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 132 transitions, 737 flow [2023-11-10 11:48:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 11:48:30,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 11:48:30,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 537 transitions. [2023-11-10 11:48:30,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8075187969924812 [2023-11-10 11:48:30,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 537 transitions. [2023-11-10 11:48:30,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 537 transitions. [2023-11-10 11:48:30,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:30,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 537 transitions. [2023-11-10 11:48:30,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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) [2023-11-10 11:48:30,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 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) [2023-11-10 11:48:30,326 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 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) [2023-11-10 11:48:30,327 INFO L175 Difference]: Start difference. First operand has 123 places, 109 transitions, 537 flow. Second operand 7 states and 537 transitions. [2023-11-10 11:48:30,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 132 transitions, 737 flow [2023-11-10 11:48:30,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 132 transitions, 677 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-11-10 11:48:30,358 INFO L231 Difference]: Finished difference. Result has 131 places, 113 transitions, 554 flow [2023-11-10 11:48:30,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=554, PETRI_PLACES=131, PETRI_TRANSITIONS=113} [2023-11-10 11:48:30,360 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 45 predicate places. [2023-11-10 11:48:30,360 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 113 transitions, 554 flow [2023-11-10 11:48:30,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.42857142857143) internal successors, (514), 7 states have internal predecessors, (514), 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) [2023-11-10 11:48:30,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:30,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:30,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 11:48:30,361 INFO L420 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)] === [2023-11-10 11:48:30,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:30,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1657570767, now seen corresponding path program 2 times [2023-11-10 11:48:30,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:30,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630399178] [2023-11-10 11:48:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:30,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:30,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:30,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630399178] [2023-11-10 11:48:30,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630399178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:30,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:30,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:48:30,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196267338] [2023-11-10 11:48:30,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:30,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:48:30,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:30,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:48:30,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:48:30,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 95 [2023-11-10 11:48:30,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 113 transitions, 554 flow. Second operand has 8 states, 8 states have (on average 77.75) internal successors, (622), 8 states have internal predecessors, (622), 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) [2023-11-10 11:48:30,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:30,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 95 [2023-11-10 11:48:30,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:30,780 INFO L124 PetriNetUnfolderBase]: 368/1454 cut-off events. [2023-11-10 11:48:30,780 INFO L125 PetriNetUnfolderBase]: For 3460/4478 co-relation queries the response was YES. [2023-11-10 11:48:30,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4779 conditions, 1454 events. 368/1454 cut-off events. For 3460/4478 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 14036 event pairs, 4 based on Foata normal form. 205/1577 useless extension candidates. Maximal degree in co-relation 4749. Up to 206 conditions per place. [2023-11-10 11:48:30,789 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 24 selfloop transitions, 32 changer transitions 19/142 dead transitions. [2023-11-10 11:48:30,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 142 transitions, 890 flow [2023-11-10 11:48:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-10 11:48:30,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-10 11:48:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1276 transitions. [2023-11-10 11:48:30,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8394736842105263 [2023-11-10 11:48:30,795 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1276 transitions. [2023-11-10 11:48:30,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1276 transitions. [2023-11-10 11:48:30,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:30,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1276 transitions. [2023-11-10 11:48:30,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 79.75) internal successors, (1276), 16 states have internal predecessors, (1276), 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) [2023-11-10 11:48:30,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 95.0) internal successors, (1615), 17 states have internal predecessors, (1615), 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) [2023-11-10 11:48:30,803 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 95.0) internal successors, (1615), 17 states have internal predecessors, (1615), 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) [2023-11-10 11:48:30,803 INFO L175 Difference]: Start difference. First operand has 131 places, 113 transitions, 554 flow. Second operand 16 states and 1276 transitions. [2023-11-10 11:48:30,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 142 transitions, 890 flow [2023-11-10 11:48:30,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 142 transitions, 859 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-11-10 11:48:30,821 INFO L231 Difference]: Finished difference. Result has 143 places, 114 transitions, 629 flow [2023-11-10 11:48:30,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=629, PETRI_PLACES=143, PETRI_TRANSITIONS=114} [2023-11-10 11:48:30,822 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 57 predicate places. [2023-11-10 11:48:30,822 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 114 transitions, 629 flow [2023-11-10 11:48:30,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.75) internal successors, (622), 8 states have internal predecessors, (622), 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) [2023-11-10 11:48:30,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:48:30,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:48:30,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 11:48:30,823 INFO L420 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)] === [2023-11-10 11:48:30,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:48:30,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1780737616, now seen corresponding path program 1 times [2023-11-10 11:48:30,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:48:30,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870588370] [2023-11-10 11:48:30,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:48:30,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:48:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:48:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:48:30,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:48:30,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870588370] [2023-11-10 11:48:30,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870588370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:48:30,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:48:30,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:48:30,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535642475] [2023-11-10 11:48:30,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:48:30,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:48:30,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:48:30,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:48:30,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:48:30,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 95 [2023-11-10 11:48:30,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 114 transitions, 629 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2023-11-10 11:48:30,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:48:30,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 95 [2023-11-10 11:48:30,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:48:31,159 INFO L124 PetriNetUnfolderBase]: 227/1323 cut-off events. [2023-11-10 11:48:31,159 INFO L125 PetriNetUnfolderBase]: For 3162/3263 co-relation queries the response was YES. [2023-11-10 11:48:31,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4137 conditions, 1323 events. 227/1323 cut-off events. For 3162/3263 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12851 event pairs, 6 based on Foata normal form. 1/1277 useless extension candidates. Maximal degree in co-relation 4072. Up to 167 conditions per place. [2023-11-10 11:48:31,166 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 0 selfloop transitions, 0 changer transitions 129/129 dead transitions. [2023-11-10 11:48:31,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 129 transitions, 823 flow [2023-11-10 11:48:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 11:48:31,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 11:48:31,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 586 transitions. [2023-11-10 11:48:31,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7710526315789473 [2023-11-10 11:48:31,167 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 586 transitions. [2023-11-10 11:48:31,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 586 transitions. [2023-11-10 11:48:31,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:48:31,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 586 transitions. [2023-11-10 11:48:31,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 73.25) internal successors, (586), 8 states have internal predecessors, (586), 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) [2023-11-10 11:48:31,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2023-11-10 11:48:31,170 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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) [2023-11-10 11:48:31,170 INFO L175 Difference]: Start difference. First operand has 143 places, 114 transitions, 629 flow. Second operand 8 states and 586 transitions. [2023-11-10 11:48:31,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 129 transitions, 823 flow [2023-11-10 11:48:31,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 129 transitions, 726 flow, removed 15 selfloop flow, removed 15 redundant places. [2023-11-10 11:48:31,192 INFO L231 Difference]: Finished difference. Result has 130 places, 0 transitions, 0 flow [2023-11-10 11:48:31,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=130, PETRI_TRANSITIONS=0} [2023-11-10 11:48:31,194 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 44 predicate places. [2023-11-10 11:48:31,194 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 0 transitions, 0 flow [2023-11-10 11:48:31,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 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) [2023-11-10 11:48:31,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-10 11:48:31,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-10 11:48:31,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-10 11:48:31,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-10 11:48:31,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 11:48:31,197 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-11-10 11:48:31,199 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 11:48:31,199 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 11:48:31,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:48:31 BasicIcfg [2023-11-10 11:48:31,205 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 11:48:31,206 INFO L158 Benchmark]: Toolchain (without parser) took 4109.73ms. Allocated memory was 414.2MB in the beginning and 607.1MB in the end (delta: 192.9MB). Free memory was 371.9MB in the beginning and 231.6MB in the end (delta: 140.2MB). Peak memory consumption was 334.0MB. Max. memory is 8.0GB. [2023-11-10 11:48:31,206 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 251.7MB. Free memory is still 202.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 11:48:31,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.55ms. Allocated memory is still 414.2MB. Free memory was 371.9MB in the beginning and 351.3MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-10 11:48:31,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.69ms. Allocated memory is still 414.2MB. Free memory was 351.3MB in the beginning and 349.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:48:31,210 INFO L158 Benchmark]: Boogie Preprocessor took 26.90ms. Allocated memory is still 414.2MB. Free memory was 349.2MB in the beginning and 347.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:48:31,210 INFO L158 Benchmark]: RCFGBuilder took 276.83ms. Allocated memory is still 414.2MB. Free memory was 347.7MB in the beginning and 333.8MB in the end (delta: 13.9MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-10 11:48:31,210 INFO L158 Benchmark]: TraceAbstraction took 3457.58ms. Allocated memory was 414.2MB in the beginning and 607.1MB in the end (delta: 192.9MB). Free memory was 333.4MB in the beginning and 231.6MB in the end (delta: 101.7MB). Peak memory consumption was 296.2MB. Max. memory is 8.0GB. [2023-11-10 11:48:31,211 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 251.7MB. Free memory is still 202.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 296.55ms. Allocated memory is still 414.2MB. Free memory was 371.9MB in the beginning and 351.3MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.69ms. Allocated memory is still 414.2MB. Free memory was 351.3MB in the beginning and 349.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.90ms. Allocated memory is still 414.2MB. Free memory was 349.2MB in the beginning and 347.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 276.83ms. Allocated memory is still 414.2MB. Free memory was 347.7MB in the beginning and 333.8MB in the end (delta: 13.9MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3457.58ms. Allocated memory was 414.2MB in the beginning and 607.1MB in the end (delta: 192.9MB). Free memory was 333.4MB in the beginning and 231.6MB in the end (delta: 101.7MB). Peak memory consumption was 296.2MB. 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, 124 locations, 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: 3.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 305 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 305 mSDsluCounter, 331 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 257 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 407 IncrementalHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 74 mSDtfsCounter, 407 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=629occurred in iteration=5, InterpolantAutomatonStates: 67, 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, 1.2s InterpolantComputationTime, 362 NumberOfCodeBlocks, 362 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 356 ConstructedInterpolants, 0 QuantifiedInterpolants, 1752 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-10 11:48:31,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...