/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:51:23,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:51:23,127 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 [2023-12-09 14:51:23,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:51:23,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:51:23,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:51:23,155 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:51:23,156 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:51:23,156 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:51:23,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:51:23,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:51:23,157 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:51:23,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:51:23,158 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:51:23,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:51:23,158 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:51:23,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:51:23,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:51:23,159 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:51:23,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:51:23,160 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:51:23,163 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:51:23,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:51:23,163 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:51:23,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:51:23,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:51:23,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:51:23,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:51:23,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:51:23,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:51:23,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:51:23,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:51:23,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:51:23,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:51:23,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:51:23,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:51:23,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:51:23,451 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:51:23,451 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:51:23,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-12-09 14:51:24,623 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:51:24,853 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:51:24,853 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-12-09 14:51:24,866 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eb5cc0ee/a70542c531514b15a28cc3e64c8b1f1d/FLAGa3c7efe1c [2023-12-09 14:51:24,877 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eb5cc0ee/a70542c531514b15a28cc3e64c8b1f1d [2023-12-09 14:51:24,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:51:24,880 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:51:24,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:51:24,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:51:24,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:51:24,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:51:24" (1/1) ... [2023-12-09 14:51:24,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13544ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:24, skipping insertion in model container [2023-12-09 14:51:24,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:51:24" (1/1) ... [2023-12-09 14:51:24,930 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:51:25,168 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-atomic/read_write_lock-1.i[31246,31259] [2023-12-09 14:51:25,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:51:25,199 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:51:25,258 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-atomic/read_write_lock-1.i[31246,31259] [2023-12-09 14:51:25,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:51:25,297 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:51:25,297 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:51:25,304 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:51:25,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25 WrapperNode [2023-12-09 14:51:25,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:51:25,307 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:51:25,307 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:51:25,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:51:25,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25" (1/1) ... [2023-12-09 14:51:25,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25" (1/1) ... [2023-12-09 14:51:25,372 INFO L138 Inliner]: procedures = 174, calls = 45, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 113 [2023-12-09 14:51:25,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:51:25,374 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:51:25,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:51:25,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:51:25,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25" (1/1) ... [2023-12-09 14:51:25,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25" (1/1) ... [2023-12-09 14:51:25,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25" (1/1) ... [2023-12-09 14:51:25,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25" (1/1) ... [2023-12-09 14:51:25,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25" (1/1) ... [2023-12-09 14:51:25,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25" (1/1) ... [2023-12-09 14:51:25,406 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25" (1/1) ... [2023-12-09 14:51:25,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25" (1/1) ... [2023-12-09 14:51:25,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:51:25,410 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:51:25,410 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:51:25,410 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:51:25,410 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25" (1/1) ... [2023-12-09 14:51:25,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:51:25,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:51:25,453 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) [2023-12-09 14:51:25,501 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 [2023-12-09 14:51:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 14:51:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:51:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 14:51:25,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:51:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-12-09 14:51:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-12-09 14:51:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:51:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:51:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:51:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 14:51:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:51:25,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:51:25,522 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-12-09 14:51:25,523 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-12-09 14:51:25,524 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:51:25,647 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:51:25,648 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:51:25,866 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:51:25,911 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:51:25,911 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-09 14:51:25,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:51:25 BoogieIcfgContainer [2023-12-09 14:51:25,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:51:25,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:51:25,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:51:25,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:51:25,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:51:24" (1/3) ... [2023-12-09 14:51:25,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb7f2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:51:25, skipping insertion in model container [2023-12-09 14:51:25,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:25" (2/3) ... [2023-12-09 14:51:25,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb7f2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:51:25, skipping insertion in model container [2023-12-09 14:51:25,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:51:25" (3/3) ... [2023-12-09 14:51:25,924 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2023-12-09 14:51:25,939 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:51:25,939 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 14:51:25,939 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:51:26,024 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-09 14:51:26,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 108 transitions, 244 flow [2023-12-09 14:51:26,087 INFO L124 PetriNetUnfolderBase]: 2/104 cut-off events. [2023-12-09 14:51:26,087 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 14:51:26,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 104 events. 2/104 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-12-09 14:51:26,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 108 transitions, 244 flow [2023-12-09 14:51:26,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 90 transitions, 201 flow [2023-12-09 14:51:26,104 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:26,110 INFO L362 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=true, 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;@1cb91234, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:26,110 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-09 14:51:26,123 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:26,123 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2023-12-09 14:51:26,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:51:26,123 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:26,124 INFO L233 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] [2023-12-09 14:51:26,124 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:51:26,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash 726968250, now seen corresponding path program 1 times [2023-12-09 14:51:26,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:26,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764397091] [2023-12-09 14:51:26,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:26,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:26,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:26,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764397091] [2023-12-09 14:51:26,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764397091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:26,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:26,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:51:26,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684777881] [2023-12-09 14:51:26,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:26,478 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:51:26,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:51:26,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:51:26,507 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2023-12-09 14:51:26,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 90 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 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) [2023-12-09 14:51:26,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:26,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2023-12-09 14:51:26,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:27,945 INFO L124 PetriNetUnfolderBase]: 3826/7929 cut-off events. [2023-12-09 14:51:27,945 INFO L125 PetriNetUnfolderBase]: For 1855/1855 co-relation queries the response was YES. [2023-12-09 14:51:27,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14579 conditions, 7929 events. 3826/7929 cut-off events. For 1855/1855 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 70403 event pairs, 1153 based on Foata normal form. 418/7991 useless extension candidates. Maximal degree in co-relation 13857. Up to 2013 conditions per place. [2023-12-09 14:51:28,011 INFO L140 encePairwiseOnDemand]: 97/108 looper letters, 109 selfloop transitions, 24 changer transitions 4/197 dead transitions. [2023-12-09 14:51:28,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 197 transitions, 761 flow [2023-12-09 14:51:28,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:51:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:51:28,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 921 transitions. [2023-12-09 14:51:28,026 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8527777777777777 [2023-12-09 14:51:28,027 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 921 transitions. [2023-12-09 14:51:28,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 921 transitions. [2023-12-09 14:51:28,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:28,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 921 transitions. [2023-12-09 14:51:28,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.1) internal successors, (921), 10 states have internal predecessors, (921), 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) [2023-12-09 14:51:28,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 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) [2023-12-09 14:51:28,043 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 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) [2023-12-09 14:51:28,046 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 9 predicate places. [2023-12-09 14:51:28,046 INFO L500 AbstractCegarLoop]: Abstraction has has 110 places, 197 transitions, 761 flow [2023-12-09 14:51:28,047 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 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) [2023-12-09 14:51:28,047 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:28,047 INFO L233 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] [2023-12-09 14:51:28,047 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:51:28,047 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:51:28,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:28,048 INFO L85 PathProgramCache]: Analyzing trace with hash -849792209, now seen corresponding path program 1 times [2023-12-09 14:51:28,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:28,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485546415] [2023-12-09 14:51:28,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:28,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:28,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:28,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485546415] [2023-12-09 14:51:28,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485546415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:28,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:28,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:51:28,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397853158] [2023-12-09 14:51:28,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:28,140 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:51:28,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:51:28,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:51:28,141 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 108 [2023-12-09 14:51:28,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 197 transitions, 761 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2023-12-09 14:51:28,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:28,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 108 [2023-12-09 14:51:28,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:29,163 INFO L124 PetriNetUnfolderBase]: 4211/9100 cut-off events. [2023-12-09 14:51:29,163 INFO L125 PetriNetUnfolderBase]: For 6557/6863 co-relation queries the response was YES. [2023-12-09 14:51:29,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20017 conditions, 9100 events. 4211/9100 cut-off events. For 6557/6863 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 85873 event pairs, 1059 based on Foata normal form. 809/9423 useless extension candidates. Maximal degree in co-relation 18978. Up to 2207 conditions per place. [2023-12-09 14:51:29,315 INFO L140 encePairwiseOnDemand]: 102/108 looper letters, 91 selfloop transitions, 20 changer transitions 0/236 dead transitions. [2023-12-09 14:51:29,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 236 transitions, 1217 flow [2023-12-09 14:51:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:51:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:51:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-12-09 14:51:29,317 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2023-12-09 14:51:29,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-12-09 14:51:29,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-12-09 14:51:29,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:29,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-12-09 14:51:29,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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) [2023-12-09 14:51:29,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2023-12-09 14:51:29,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2023-12-09 14:51:29,320 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 11 predicate places. [2023-12-09 14:51:29,320 INFO L500 AbstractCegarLoop]: Abstraction has has 112 places, 236 transitions, 1217 flow [2023-12-09 14:51:29,321 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2023-12-09 14:51:29,321 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:29,321 INFO L233 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] [2023-12-09 14:51:29,321 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:51:29,321 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:51:29,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1046403955, now seen corresponding path program 2 times [2023-12-09 14:51:29,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:29,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085568329] [2023-12-09 14:51:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:29,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:29,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:29,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085568329] [2023-12-09 14:51:29,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085568329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:29,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:29,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:51:29,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818919404] [2023-12-09 14:51:29,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:29,441 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 14:51:29,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:29,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 14:51:29,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 14:51:29,442 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 108 [2023-12-09 14:51:29,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 236 transitions, 1217 flow. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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) [2023-12-09 14:51:29,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:29,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 108 [2023-12-09 14:51:29,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:29,899 INFO L124 PetriNetUnfolderBase]: 1438/3814 cut-off events. [2023-12-09 14:51:29,900 INFO L125 PetriNetUnfolderBase]: For 6871/7145 co-relation queries the response was YES. [2023-12-09 14:51:29,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9802 conditions, 3814 events. 1438/3814 cut-off events. For 6871/7145 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 34939 event pairs, 218 based on Foata normal form. 465/4118 useless extension candidates. Maximal degree in co-relation 5011. Up to 897 conditions per place. [2023-12-09 14:51:29,927 INFO L140 encePairwiseOnDemand]: 101/108 looper letters, 89 selfloop transitions, 31 changer transitions 33/280 dead transitions. [2023-12-09 14:51:29,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 280 transitions, 1862 flow [2023-12-09 14:51:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 14:51:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 14:51:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 400 transitions. [2023-12-09 14:51:29,930 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2023-12-09 14:51:29,930 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 400 transitions. [2023-12-09 14:51:29,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 400 transitions. [2023-12-09 14:51:29,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:29,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 400 transitions. [2023-12-09 14:51:29,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-09 14:51:29,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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) [2023-12-09 14:51:29,933 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 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) [2023-12-09 14:51:29,934 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 14 predicate places. [2023-12-09 14:51:29,935 INFO L500 AbstractCegarLoop]: Abstraction has has 115 places, 280 transitions, 1862 flow [2023-12-09 14:51:29,935 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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) [2023-12-09 14:51:29,935 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:29,935 INFO L233 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] [2023-12-09 14:51:29,935 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:51:29,936 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:51:29,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:29,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1913493217, now seen corresponding path program 1 times [2023-12-09 14:51:29,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:29,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221208856] [2023-12-09 14:51:29,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:29,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:30,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:30,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221208856] [2023-12-09 14:51:30,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221208856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:30,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:30,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:51:30,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657506582] [2023-12-09 14:51:30,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:30,047 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:51:30,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:30,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:51:30,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:51:30,048 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2023-12-09 14:51:30,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 280 transitions, 1862 flow. Second operand has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 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) [2023-12-09 14:51:30,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:30,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2023-12-09 14:51:30,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:30,938 INFO L124 PetriNetUnfolderBase]: 2171/5309 cut-off events. [2023-12-09 14:51:30,939 INFO L125 PetriNetUnfolderBase]: For 12030/12662 co-relation queries the response was YES. [2023-12-09 14:51:30,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17432 conditions, 5309 events. 2171/5309 cut-off events. For 12030/12662 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 49831 event pairs, 280 based on Foata normal form. 29/5180 useless extension candidates. Maximal degree in co-relation 8488. Up to 1263 conditions per place. [2023-12-09 14:51:30,977 INFO L140 encePairwiseOnDemand]: 99/108 looper letters, 252 selfloop transitions, 60 changer transitions 175/551 dead transitions. [2023-12-09 14:51:30,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 551 transitions, 5072 flow [2023-12-09 14:51:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:51:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:51:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 910 transitions. [2023-12-09 14:51:30,980 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8425925925925926 [2023-12-09 14:51:30,980 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 910 transitions. [2023-12-09 14:51:30,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 910 transitions. [2023-12-09 14:51:30,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:30,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 910 transitions. [2023-12-09 14:51:30,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2023-12-09 14:51:30,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 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) [2023-12-09 14:51:30,985 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 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) [2023-12-09 14:51:30,986 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 23 predicate places. [2023-12-09 14:51:30,986 INFO L500 AbstractCegarLoop]: Abstraction has has 124 places, 551 transitions, 5072 flow [2023-12-09 14:51:30,987 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 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) [2023-12-09 14:51:30,987 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:30,987 INFO L233 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] [2023-12-09 14:51:30,987 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:51:30,987 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:51:30,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:30,988 INFO L85 PathProgramCache]: Analyzing trace with hash 670406523, now seen corresponding path program 1 times [2023-12-09 14:51:30,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:30,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698299604] [2023-12-09 14:51:30,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:30,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698299604] [2023-12-09 14:51:31,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698299604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:31,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:31,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:51:31,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018509548] [2023-12-09 14:51:31,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:31,058 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:51:31,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:31,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:51:31,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:51:31,059 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2023-12-09 14:51:31,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 551 transitions, 5072 flow. Second operand has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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) [2023-12-09 14:51:31,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:31,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2023-12-09 14:51:31,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:32,022 INFO L124 PetriNetUnfolderBase]: 2147/5203 cut-off events. [2023-12-09 14:51:32,022 INFO L125 PetriNetUnfolderBase]: For 15404/17224 co-relation queries the response was YES. [2023-12-09 14:51:32,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20824 conditions, 5203 events. 2147/5203 cut-off events. For 15404/17224 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 48495 event pairs, 223 based on Foata normal form. 68/5160 useless extension candidates. Maximal degree in co-relation 10248. Up to 1248 conditions per place. [2023-12-09 14:51:32,063 INFO L140 encePairwiseOnDemand]: 99/108 looper letters, 280 selfloop transitions, 60 changer transitions 231/635 dead transitions. [2023-12-09 14:51:32,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 635 transitions, 7031 flow [2023-12-09 14:51:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 14:51:32,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 14:51:32,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 807 transitions. [2023-12-09 14:51:32,065 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8302469135802469 [2023-12-09 14:51:32,065 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 807 transitions. [2023-12-09 14:51:32,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 807 transitions. [2023-12-09 14:51:32,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:32,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 807 transitions. [2023-12-09 14:51:32,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.66666666666667) internal successors, (807), 9 states have internal predecessors, (807), 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) [2023-12-09 14:51:32,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 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) [2023-12-09 14:51:32,070 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 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) [2023-12-09 14:51:32,072 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 31 predicate places. [2023-12-09 14:51:32,072 INFO L500 AbstractCegarLoop]: Abstraction has has 132 places, 635 transitions, 7031 flow [2023-12-09 14:51:32,073 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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) [2023-12-09 14:51:32,073 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:32,073 INFO L233 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] [2023-12-09 14:51:32,073 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:51:32,073 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:51:32,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:32,075 INFO L85 PathProgramCache]: Analyzing trace with hash -522384423, now seen corresponding path program 1 times [2023-12-09 14:51:32,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:32,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380166178] [2023-12-09 14:51:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:32,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:32,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:32,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380166178] [2023-12-09 14:51:32,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380166178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:32,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:32,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:51:32,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791370095] [2023-12-09 14:51:32,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:32,162 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:51:32,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:32,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:51:32,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:51:32,165 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2023-12-09 14:51:32,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 635 transitions, 7031 flow. Second operand has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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) [2023-12-09 14:51:32,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:32,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2023-12-09 14:51:32,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:33,169 INFO L124 PetriNetUnfolderBase]: 2125/5112 cut-off events. [2023-12-09 14:51:33,169 INFO L125 PetriNetUnfolderBase]: For 18944/21558 co-relation queries the response was YES. [2023-12-09 14:51:33,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24231 conditions, 5112 events. 2125/5112 cut-off events. For 18944/21558 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 47124 event pairs, 151 based on Foata normal form. 51/5086 useless extension candidates. Maximal degree in co-relation 12000. Up to 1238 conditions per place. [2023-12-09 14:51:33,210 INFO L140 encePairwiseOnDemand]: 99/108 looper letters, 301 selfloop transitions, 64 changer transitions 319/749 dead transitions. [2023-12-09 14:51:33,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 749 transitions, 9828 flow [2023-12-09 14:51:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 14:51:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 14:51:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 817 transitions. [2023-12-09 14:51:33,213 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8405349794238683 [2023-12-09 14:51:33,213 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 817 transitions. [2023-12-09 14:51:33,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 817 transitions. [2023-12-09 14:51:33,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:33,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 817 transitions. [2023-12-09 14:51:33,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.77777777777777) internal successors, (817), 9 states have internal predecessors, (817), 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) [2023-12-09 14:51:33,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 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) [2023-12-09 14:51:33,217 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 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) [2023-12-09 14:51:33,220 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 39 predicate places. [2023-12-09 14:51:33,220 INFO L500 AbstractCegarLoop]: Abstraction has has 140 places, 749 transitions, 9828 flow [2023-12-09 14:51:33,220 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 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) [2023-12-09 14:51:33,220 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:33,220 INFO L233 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] [2023-12-09 14:51:33,221 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 14:51:33,221 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:51:33,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash 728085988, now seen corresponding path program 1 times [2023-12-09 14:51:33,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:33,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113207948] [2023-12-09 14:51:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:33,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:33,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:33,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113207948] [2023-12-09 14:51:33,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113207948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:33,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:33,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 14:51:33,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981371772] [2023-12-09 14:51:33,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:33,361 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 14:51:33,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 14:51:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 14:51:33,363 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 108 [2023-12-09 14:51:33,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 749 transitions, 9828 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2023-12-09 14:51:33,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:33,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 108 [2023-12-09 14:51:33,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:34,225 INFO L124 PetriNetUnfolderBase]: 1865/4729 cut-off events. [2023-12-09 14:51:34,226 INFO L125 PetriNetUnfolderBase]: For 26472/28439 co-relation queries the response was YES. [2023-12-09 14:51:34,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23947 conditions, 4729 events. 1865/4729 cut-off events. For 26472/28439 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 45020 event pairs, 152 based on Foata normal form. 224/4886 useless extension candidates. Maximal degree in co-relation 20254. Up to 1285 conditions per place. [2023-12-09 14:51:34,264 INFO L140 encePairwiseOnDemand]: 101/108 looper letters, 102 selfloop transitions, 21 changer transitions 441/692 dead transitions. [2023-12-09 14:51:34,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 692 transitions, 10131 flow [2023-12-09 14:51:34,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 14:51:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 14:51:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 494 transitions. [2023-12-09 14:51:34,267 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9148148148148149 [2023-12-09 14:51:34,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 494 transitions. [2023-12-09 14:51:34,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 494 transitions. [2023-12-09 14:51:34,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:34,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 494 transitions. [2023-12-09 14:51:34,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 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) [2023-12-09 14:51:34,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 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) [2023-12-09 14:51:34,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 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) [2023-12-09 14:51:34,272 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 43 predicate places. [2023-12-09 14:51:34,272 INFO L500 AbstractCegarLoop]: Abstraction has has 144 places, 692 transitions, 10131 flow [2023-12-09 14:51:34,273 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2023-12-09 14:51:34,273 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:34,273 INFO L233 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] [2023-12-09 14:51:34,274 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 14:51:34,274 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:51:34,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:34,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1382575494, now seen corresponding path program 2 times [2023-12-09 14:51:34,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:34,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016957136] [2023-12-09 14:51:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:34,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:34,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:34,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016957136] [2023-12-09 14:51:34,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016957136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:34,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:34,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 14:51:34,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58294791] [2023-12-09 14:51:34,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:34,440 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 14:51:34,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 14:51:34,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-09 14:51:34,441 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 108 [2023-12-09 14:51:34,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 692 transitions, 10131 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2023-12-09 14:51:34,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:34,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 108 [2023-12-09 14:51:34,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:35,035 INFO L124 PetriNetUnfolderBase]: 1301/3485 cut-off events. [2023-12-09 14:51:35,036 INFO L125 PetriNetUnfolderBase]: For 25568/27483 co-relation queries the response was YES. [2023-12-09 14:51:35,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18765 conditions, 3485 events. 1301/3485 cut-off events. For 25568/27483 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 31480 event pairs, 121 based on Foata normal form. 117/3554 useless extension candidates. Maximal degree in co-relation 11259. Up to 1064 conditions per place. [2023-12-09 14:51:35,056 INFO L140 encePairwiseOnDemand]: 101/108 looper letters, 0 selfloop transitions, 0 changer transitions 544/544 dead transitions. [2023-12-09 14:51:35,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 544 transitions, 8681 flow [2023-12-09 14:51:35,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 14:51:35,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 14:51:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 494 transitions. [2023-12-09 14:51:35,058 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9148148148148149 [2023-12-09 14:51:35,058 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 494 transitions. [2023-12-09 14:51:35,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 494 transitions. [2023-12-09 14:51:35,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:35,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 494 transitions. [2023-12-09 14:51:35,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 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) [2023-12-09 14:51:35,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 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) [2023-12-09 14:51:35,060 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 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) [2023-12-09 14:51:35,061 INFO L308 CegarLoopForPetriNet]: 101 programPoint places, 43 predicate places. [2023-12-09 14:51:35,061 INFO L500 AbstractCegarLoop]: Abstraction has has 144 places, 544 transitions, 8681 flow [2023-12-09 14:51:35,062 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2023-12-09 14:51:35,069 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/read_write_lock-1.i_BEv2_AllErrorsAtOnce [2023-12-09 14:51:35,105 INFO L810 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-12-09 14:51:35,105 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-12-09 14:51:35,105 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-12-09 14:51:35,106 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-12-09 14:51:35,106 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-12-09 14:51:35,106 INFO L810 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-12-09 14:51:35,107 INFO L810 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-12-09 14:51:35,107 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 14:51:35,108 INFO L457 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-12-09 14:51:35,112 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 14:51:35,113 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 14:51:35,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:51:35 BasicIcfg [2023-12-09 14:51:35,121 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 14:51:35,121 INFO L158 Benchmark]: Toolchain (without parser) took 10241.84ms. Allocated memory was 190.8MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 135.9MB in the beginning and 1.1GB in the end (delta: -941.8MB). Peak memory consumption was 566.6MB. Max. memory is 8.0GB. [2023-12-09 14:51:35,122 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 14:51:35,122 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.60ms. Allocated memory is still 190.8MB. Free memory was 135.9MB in the beginning and 115.6MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-09 14:51:35,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.06ms. Allocated memory is still 190.8MB. Free memory was 115.6MB in the beginning and 113.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 14:51:35,124 INFO L158 Benchmark]: Boogie Preprocessor took 35.15ms. Allocated memory is still 190.8MB. Free memory was 113.4MB in the beginning and 111.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 14:51:35,125 INFO L158 Benchmark]: RCFGBuilder took 508.27ms. Allocated memory is still 190.8MB. Free memory was 111.8MB in the beginning and 145.0MB in the end (delta: -33.2MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. [2023-12-09 14:51:35,125 INFO L158 Benchmark]: TraceAbstraction took 9201.56ms. Allocated memory was 190.8MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 144.5MB in the beginning and 1.1GB in the end (delta: -933.2MB). Peak memory consumption was 574.6MB. Max. memory is 8.0GB. [2023-12-09 14:51:35,126 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 425.60ms. Allocated memory is still 190.8MB. Free memory was 135.9MB in the beginning and 115.6MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.06ms. Allocated memory is still 190.8MB. Free memory was 115.6MB in the beginning and 113.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.15ms. Allocated memory is still 190.8MB. Free memory was 113.4MB in the beginning and 111.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 508.27ms. Allocated memory is still 190.8MB. Free memory was 111.8MB in the beginning and 145.0MB in the end (delta: -33.2MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. * TraceAbstraction took 9201.56ms. Allocated memory was 190.8MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 144.5MB in the beginning and 1.1GB in the end (delta: -933.2MB). Peak memory consumption was 574.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 739]: 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, 132 locations, 7 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: 9.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 421 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 421 mSDsluCounter, 248 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 141 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1280 IncrementalHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 107 mSDtfsCounter, 1280 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10131occurred in iteration=7, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 650 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2023-12-09 14:51:35,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...