/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 -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:17:20,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:17:20,489 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-SemanticLbe.epf [2023-11-17 11:17:20,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:17:20,522 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:17:20,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:17:20,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:17:20,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:17:20,523 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:17:20,524 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:17:20,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:17:20,524 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:17:20,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:17:20,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:17:20,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:17:20,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:17:20,533 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:17:20,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:17:20,534 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:17:20,534 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:17:20,534 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:17:20,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:17:20,535 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:17:20,535 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:17:20,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:17:20,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:17:20,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:17:20,537 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:17:20,537 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:17:20,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:17:20,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:17:20,539 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:17:20,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:17:20,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:17:20,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:17:20,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:17:20,820 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:17:20,821 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:17:20,822 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-11-17 11:17:21,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:17:22,219 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:17:22,219 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-11-17 11:17:22,230 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/283dec3c5/45f7ff5b45b94c23a9de3fa6c48919bd/FLAGa1a9a4b82 [2023-11-17 11:17:22,250 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/283dec3c5/45f7ff5b45b94c23a9de3fa6c48919bd [2023-11-17 11:17:22,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:17:22,255 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:17:22,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:17:22,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:17:22,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:17:22,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cb2fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22, skipping insertion in model container [2023-11-17 11:17:22,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,311 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:17:22,491 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-17 11:17:22,635 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] [2023-11-17 11:17:22,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:17:22,662 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:17:22,683 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-17 11:17:22,702 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] [2023-11-17 11:17:22,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:17:22,748 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:17:22,749 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:17:22,749 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:17:22,755 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:17:22,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22 WrapperNode [2023-11-17 11:17:22,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:17:22,758 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:17:22,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:17:22,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:17:22,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,814 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 113 [2023-11-17 11:17:22,814 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:17:22,815 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:17:22,815 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:17:22,815 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:17:22,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:17:22,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:17:22,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:17:22,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:17:22,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22" (1/1) ... [2023-11-17 11:17:22,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:17:22,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:17:22,893 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) [2023-11-17 11:17:22,900 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 [2023-11-17 11:17:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:17:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:17:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:17:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:17:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-11-17 11:17:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-11-17 11:17:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:17:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:17:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:17:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:17:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:17:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:17:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-11-17 11:17:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-11-17 11:17:22,923 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:17:23,026 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:17:23,028 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:17:23,184 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:17:23,337 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:17:23,338 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:17:23,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:17:23 BoogieIcfgContainer [2023-11-17 11:17:23,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:17:23,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:17:23,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:17:23,344 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:17:23,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:17:22" (1/3) ... [2023-11-17 11:17:23,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631dc001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:17:23, skipping insertion in model container [2023-11-17 11:17:23,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:17:22" (2/3) ... [2023-11-17 11:17:23,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631dc001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:17:23, skipping insertion in model container [2023-11-17 11:17:23,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:17:23" (3/3) ... [2023-11-17 11:17:23,347 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2023-11-17 11:17:23,365 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:17:23,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:17:23,366 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:17:23,446 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 11:17:23,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 55 transitions, 138 flow [2023-11-17 11:17:23,515 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2023-11-17 11:17:23,515 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 11:17:23,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 2/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-17 11:17:23,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 55 transitions, 138 flow [2023-11-17 11:17:23,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 49 transitions, 119 flow [2023-11-17 11:17:23,530 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:17:23,547 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 49 transitions, 119 flow [2023-11-17 11:17:23,550 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 49 transitions, 119 flow [2023-11-17 11:17:23,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 49 transitions, 119 flow [2023-11-17 11:17:23,564 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2023-11-17 11:17:23,564 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:17:23,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 49 events. 2/49 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-17 11:17:23,566 INFO L119 LiptonReduction]: Number of co-enabled transitions 1294 [2023-11-17 11:17:24,199 INFO L134 LiptonReduction]: Checked pairs total: 8883 [2023-11-17 11:17:24,199 INFO L136 LiptonReduction]: Total number of compositions: 29 [2023-11-17 11:17:24,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:17:24,229 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;@89a08f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:17:24,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-17 11:17:24,237 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:17:24,238 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2023-11-17 11:17:24,238 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:17:24,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:24,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:24,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 11:17:24,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:24,243 INFO L85 PathProgramCache]: Analyzing trace with hash -253468976, now seen corresponding path program 1 times [2023-11-17 11:17:24,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:24,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326964822] [2023-11-17 11:17:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:24,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:24,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:24,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326964822] [2023-11-17 11:17:24,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326964822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:24,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:24,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:24,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759752985] [2023-11-17 11:17:24,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:24,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:17:24,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:24,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:17:24,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:17:24,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 84 [2023-11-17 11:17:24,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2023-11-17 11:17:24,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:24,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 84 [2023-11-17 11:17:24,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:26,549 INFO L124 PetriNetUnfolderBase]: 15589/21880 cut-off events. [2023-11-17 11:17:26,549 INFO L125 PetriNetUnfolderBase]: For 2179/2179 co-relation queries the response was YES. [2023-11-17 11:17:26,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45025 conditions, 21880 events. 15589/21880 cut-off events. For 2179/2179 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 122289 event pairs, 2277 based on Foata normal form. 0/20580 useless extension candidates. Maximal degree in co-relation 35322. Up to 9583 conditions per place. [2023-11-17 11:17:26,710 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 143 selfloop transitions, 22 changer transitions 2/167 dead transitions. [2023-11-17 11:17:26,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 167 transitions, 755 flow [2023-11-17 11:17:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:17:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:17:26,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 273 transitions. [2023-11-17 11:17:26,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2023-11-17 11:17:26,728 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 273 transitions. [2023-11-17 11:17:26,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 273 transitions. [2023-11-17 11:17:26,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:26,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 273 transitions. [2023-11-17 11:17:26,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 34.125) internal successors, (273), 8 states have internal predecessors, (273), 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) [2023-11-17 11:17:26,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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) [2023-11-17 11:17:26,740 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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) [2023-11-17 11:17:26,741 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 95 flow. Second operand 8 states and 273 transitions. [2023-11-17 11:17:26,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 167 transitions, 755 flow [2023-11-17 11:17:26,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 167 transitions, 703 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-17 11:17:26,772 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 225 flow [2023-11-17 11:17:26,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=225, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2023-11-17 11:17:26,777 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 6 predicate places. [2023-11-17 11:17:26,777 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 225 flow [2023-11-17 11:17:26,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2023-11-17 11:17:26,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:26,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:26,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:17:26,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 11:17:26,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:26,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1416682515, now seen corresponding path program 1 times [2023-11-17 11:17:26,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:26,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375762723] [2023-11-17 11:17:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:26,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:26,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:26,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375762723] [2023-11-17 11:17:26,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375762723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:26,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:26,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:17:26,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291695937] [2023-11-17 11:17:26,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:26,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:17:26,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:26,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:17:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:17:26,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 84 [2023-11-17 11:17:26,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2023-11-17 11:17:26,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:26,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 84 [2023-11-17 11:17:26,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:27,502 INFO L124 PetriNetUnfolderBase]: 4117/7058 cut-off events. [2023-11-17 11:17:27,502 INFO L125 PetriNetUnfolderBase]: For 3638/3950 co-relation queries the response was YES. [2023-11-17 11:17:27,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16698 conditions, 7058 events. 4117/7058 cut-off events. For 3638/3950 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 53323 event pairs, 1205 based on Foata normal form. 766/7400 useless extension candidates. Maximal degree in co-relation 11720. Up to 2854 conditions per place. [2023-11-17 11:17:27,557 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 42 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2023-11-17 11:17:27,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 374 flow [2023-11-17 11:17:27,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:17:27,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:17:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-17 11:17:27,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-11-17 11:17:27,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-17 11:17:27,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-17 11:17:27,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:27,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-17 11:17:27,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2023-11-17 11:17:27,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2023-11-17 11:17:27,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2023-11-17 11:17:27,565 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 225 flow. Second operand 3 states and 112 transitions. [2023-11-17 11:17:27,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 374 flow [2023-11-17 11:17:27,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:17:27,586 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 241 flow [2023-11-17 11:17:27,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-11-17 11:17:27,588 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2023-11-17 11:17:27,588 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 241 flow [2023-11-17 11:17:27,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2023-11-17 11:17:27,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:27,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:27,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:17:27,593 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 11:17:27,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1230618551, now seen corresponding path program 2 times [2023-11-17 11:17:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:27,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217637205] [2023-11-17 11:17:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:27,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:27,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:27,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217637205] [2023-11-17 11:17:27,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217637205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:27,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:27,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:17:27,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332025946] [2023-11-17 11:17:27,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:27,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:17:27,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:27,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:17:27,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:17:27,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 84 [2023-11-17 11:17:27,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2023-11-17 11:17:27,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:27,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 84 [2023-11-17 11:17:27,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:28,091 INFO L124 PetriNetUnfolderBase]: 1305/2990 cut-off events. [2023-11-17 11:17:28,092 INFO L125 PetriNetUnfolderBase]: For 2974/3084 co-relation queries the response was YES. [2023-11-17 11:17:28,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7619 conditions, 2990 events. 1305/2990 cut-off events. For 2974/3084 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24269 event pairs, 517 based on Foata normal form. 290/3148 useless extension candidates. Maximal degree in co-relation 4813. Up to 1432 conditions per place. [2023-11-17 11:17:28,110 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 44 selfloop transitions, 7 changer transitions 9/85 dead transitions. [2023-11-17 11:17:28,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 85 transitions, 454 flow [2023-11-17 11:17:28,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:17:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:17:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2023-11-17 11:17:28,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2023-11-17 11:17:28,114 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 153 transitions. [2023-11-17 11:17:28,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 153 transitions. [2023-11-17 11:17:28,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:28,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 153 transitions. [2023-11-17 11:17:28,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2023-11-17 11:17:28,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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) [2023-11-17 11:17:28,117 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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) [2023-11-17 11:17:28,117 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 241 flow. Second operand 4 states and 153 transitions. [2023-11-17 11:17:28,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 85 transitions, 454 flow [2023-11-17 11:17:28,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 438 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:17:28,127 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 270 flow [2023-11-17 11:17:28,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-11-17 11:17:28,129 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2023-11-17 11:17:28,129 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 270 flow [2023-11-17 11:17:28,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2023-11-17 11:17:28,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:28,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:28,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:17:28,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 11:17:28,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:28,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1428678496, now seen corresponding path program 1 times [2023-11-17 11:17:28,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:28,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745528421] [2023-11-17 11:17:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:28,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:28,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:28,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745528421] [2023-11-17 11:17:28,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745528421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:28,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:28,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:28,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550280453] [2023-11-17 11:17:28,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:28,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:17:28,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:28,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:17:28,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:17:28,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 84 [2023-11-17 11:17:28,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2023-11-17 11:17:28,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:28,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 84 [2023-11-17 11:17:28,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:28,927 INFO L124 PetriNetUnfolderBase]: 3675/6532 cut-off events. [2023-11-17 11:17:28,927 INFO L125 PetriNetUnfolderBase]: For 7725/7725 co-relation queries the response was YES. [2023-11-17 11:17:28,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19870 conditions, 6532 events. 3675/6532 cut-off events. For 7725/7725 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 43784 event pairs, 709 based on Foata normal form. 0/6430 useless extension candidates. Maximal degree in co-relation 15044. Up to 2609 conditions per place. [2023-11-17 11:17:28,962 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 125 selfloop transitions, 33 changer transitions 16/174 dead transitions. [2023-11-17 11:17:28,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 174 transitions, 1154 flow [2023-11-17 11:17:28,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:17:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:17:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2023-11-17 11:17:28,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3758503401360544 [2023-11-17 11:17:28,964 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 221 transitions. [2023-11-17 11:17:28,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 221 transitions. [2023-11-17 11:17:28,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:28,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 221 transitions. [2023-11-17 11:17:28,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 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) [2023-11-17 11:17:28,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 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) [2023-11-17 11:17:28,966 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 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) [2023-11-17 11:17:28,967 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 270 flow. Second operand 7 states and 221 transitions. [2023-11-17 11:17:28,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 174 transitions, 1154 flow [2023-11-17 11:17:28,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 174 transitions, 1145 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:17:28,984 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 525 flow [2023-11-17 11:17:28,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=525, PETRI_PLACES=69, PETRI_TRANSITIONS=80} [2023-11-17 11:17:28,986 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 21 predicate places. [2023-11-17 11:17:28,987 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 525 flow [2023-11-17 11:17:28,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2023-11-17 11:17:28,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:28,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:28,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:17:28,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 11:17:28,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:28,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1570910040, now seen corresponding path program 1 times [2023-11-17 11:17:28,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:28,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752284075] [2023-11-17 11:17:28,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:28,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:29,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:29,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752284075] [2023-11-17 11:17:29,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752284075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:29,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:29,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:29,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513200121] [2023-11-17 11:17:29,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:29,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:17:29,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:29,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:17:29,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:17:29,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 84 [2023-11-17 11:17:29,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 80 transitions, 525 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-11-17 11:17:29,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:29,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 84 [2023-11-17 11:17:29,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:29,752 INFO L124 PetriNetUnfolderBase]: 3256/5857 cut-off events. [2023-11-17 11:17:29,752 INFO L125 PetriNetUnfolderBase]: For 9663/9663 co-relation queries the response was YES. [2023-11-17 11:17:29,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20013 conditions, 5857 events. 3256/5857 cut-off events. For 9663/9663 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39315 event pairs, 421 based on Foata normal form. 58/5915 useless extension candidates. Maximal degree in co-relation 16827. Up to 2016 conditions per place. [2023-11-17 11:17:29,792 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 124 selfloop transitions, 48 changer transitions 15/187 dead transitions. [2023-11-17 11:17:29,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 187 transitions, 1394 flow [2023-11-17 11:17:29,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:17:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:17:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2023-11-17 11:17:29,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3630952380952381 [2023-11-17 11:17:29,794 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 244 transitions. [2023-11-17 11:17:29,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 244 transitions. [2023-11-17 11:17:29,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:29,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 244 transitions. [2023-11-17 11:17:29,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.5) internal successors, (244), 8 states have internal predecessors, (244), 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) [2023-11-17 11:17:29,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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) [2023-11-17 11:17:29,797 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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) [2023-11-17 11:17:29,797 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 525 flow. Second operand 8 states and 244 transitions. [2023-11-17 11:17:29,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 187 transitions, 1394 flow [2023-11-17 11:17:29,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 187 transitions, 1376 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-17 11:17:29,833 INFO L231 Difference]: Finished difference. Result has 79 places, 95 transitions, 770 flow [2023-11-17 11:17:29,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=770, PETRI_PLACES=79, PETRI_TRANSITIONS=95} [2023-11-17 11:17:29,836 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 31 predicate places. [2023-11-17 11:17:29,836 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 95 transitions, 770 flow [2023-11-17 11:17:29,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-11-17 11:17:29,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:29,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:29,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:17:29,836 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 11:17:29,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:29,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1558945216, now seen corresponding path program 1 times [2023-11-17 11:17:29,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:29,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869541308] [2023-11-17 11:17:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:29,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:29,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:29,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869541308] [2023-11-17 11:17:29,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869541308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:29,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:29,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:29,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429637167] [2023-11-17 11:17:29,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:29,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:17:29,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:29,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:17:29,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:17:29,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 84 [2023-11-17 11:17:29,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 95 transitions, 770 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-11-17 11:17:29,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:29,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 84 [2023-11-17 11:17:29,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:30,533 INFO L124 PetriNetUnfolderBase]: 3150/5685 cut-off events. [2023-11-17 11:17:30,533 INFO L125 PetriNetUnfolderBase]: For 12684/12684 co-relation queries the response was YES. [2023-11-17 11:17:30,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20788 conditions, 5685 events. 3150/5685 cut-off events. For 12684/12684 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 38264 event pairs, 589 based on Foata normal form. 66/5751 useless extension candidates. Maximal degree in co-relation 17834. Up to 2347 conditions per place. [2023-11-17 11:17:30,574 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 115 selfloop transitions, 46 changer transitions 7/168 dead transitions. [2023-11-17 11:17:30,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 168 transitions, 1422 flow [2023-11-17 11:17:30,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:17:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:17:30,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2023-11-17 11:17:30,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2023-11-17 11:17:30,576 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2023-11-17 11:17:30,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2023-11-17 11:17:30,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:30,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2023-11-17 11:17:30,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 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) [2023-11-17 11:17:30,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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) [2023-11-17 11:17:30,578 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 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) [2023-11-17 11:17:30,578 INFO L175 Difference]: Start difference. First operand has 79 places, 95 transitions, 770 flow. Second operand 6 states and 192 transitions. [2023-11-17 11:17:30,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 168 transitions, 1422 flow [2023-11-17 11:17:30,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 168 transitions, 1412 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 11:17:30,633 INFO L231 Difference]: Finished difference. Result has 85 places, 98 transitions, 913 flow [2023-11-17 11:17:30,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=913, PETRI_PLACES=85, PETRI_TRANSITIONS=98} [2023-11-17 11:17:30,633 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 37 predicate places. [2023-11-17 11:17:30,634 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 98 transitions, 913 flow [2023-11-17 11:17:30,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-11-17 11:17:30,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:30,634 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] [2023-11-17 11:17:30,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:17:30,634 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 11:17:30,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:30,635 INFO L85 PathProgramCache]: Analyzing trace with hash -744081059, now seen corresponding path program 1 times [2023-11-17 11:17:30,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:30,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974391258] [2023-11-17 11:17:30,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:30,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:30,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:30,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974391258] [2023-11-17 11:17:30,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974391258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:30,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:17:30,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:17:30,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159418790] [2023-11-17 11:17:30,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:30,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:17:30,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:17:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:17:30,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 84 [2023-11-17 11:17:30,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 98 transitions, 913 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-11-17 11:17:30,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:30,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 84 [2023-11-17 11:17:30,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:30,966 INFO L124 PetriNetUnfolderBase]: 564/1778 cut-off events. [2023-11-17 11:17:30,967 INFO L125 PetriNetUnfolderBase]: For 5217/5353 co-relation queries the response was YES. [2023-11-17 11:17:30,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6459 conditions, 1778 events. 564/1778 cut-off events. For 5217/5353 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14607 event pairs, 132 based on Foata normal form. 212/1957 useless extension candidates. Maximal degree in co-relation 6188. Up to 440 conditions per place. [2023-11-17 11:17:30,978 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 0 selfloop transitions, 0 changer transitions 100/100 dead transitions. [2023-11-17 11:17:30,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 100 transitions, 775 flow [2023-11-17 11:17:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:17:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:17:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2023-11-17 11:17:30,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2023-11-17 11:17:30,979 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 183 transitions. [2023-11-17 11:17:30,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 183 transitions. [2023-11-17 11:17:30,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:30,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 183 transitions. [2023-11-17 11:17:30,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2023-11-17 11:17:30,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2023-11-17 11:17:30,981 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2023-11-17 11:17:30,981 INFO L175 Difference]: Start difference. First operand has 85 places, 98 transitions, 913 flow. Second operand 5 states and 183 transitions. [2023-11-17 11:17:30,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 100 transitions, 775 flow [2023-11-17 11:17:31,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 100 transitions, 673 flow, removed 7 selfloop flow, removed 12 redundant places. [2023-11-17 11:17:31,001 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-11-17 11:17:31,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-11-17 11:17:31,002 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2023-11-17 11:17:31,002 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-11-17 11:17:31,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-11-17 11:17:31,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-17 11:17:31,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-11-17 11:17:31,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-17 11:17:31,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-17 11:17:31,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-17 11:17:31,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-17 11:17:31,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-17 11:17:31,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:17:31,006 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-17 11:17:31,010 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:17:31,011 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:17:31,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:17:31 BasicIcfg [2023-11-17 11:17:31,014 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:17:31,014 INFO L158 Benchmark]: Toolchain (without parser) took 8759.60ms. Allocated memory was 218.1MB in the beginning and 958.4MB in the end (delta: 740.3MB). Free memory was 162.8MB in the beginning and 562.3MB in the end (delta: -399.5MB). Peak memory consumption was 341.2MB. Max. memory is 8.0GB. [2023-11-17 11:17:31,014 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 218.1MB. Free memory is still 167.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:17:31,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.89ms. Allocated memory is still 218.1MB. Free memory was 162.6MB in the beginning and 142.6MB in the end (delta: 20.1MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:17:31,015 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.36ms. Allocated memory is still 218.1MB. Free memory was 142.3MB in the beginning and 140.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:17:31,015 INFO L158 Benchmark]: Boogie Preprocessor took 36.59ms. Allocated memory is still 218.1MB. Free memory was 140.2MB in the beginning and 138.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:17:31,015 INFO L158 Benchmark]: RCFGBuilder took 486.94ms. Allocated memory was 218.1MB in the beginning and 386.9MB in the end (delta: 168.8MB). Free memory was 138.7MB in the beginning and 342.0MB in the end (delta: -203.3MB). Peak memory consumption was 27.8MB. Max. memory is 8.0GB. [2023-11-17 11:17:31,016 INFO L158 Benchmark]: TraceAbstraction took 7672.68ms. Allocated memory was 386.9MB in the beginning and 958.4MB in the end (delta: 571.5MB). Free memory was 341.0MB in the beginning and 562.3MB in the end (delta: -221.4MB). Peak memory consumption was 350.1MB. Max. memory is 8.0GB. [2023-11-17 11:17:31,017 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 218.1MB. Free memory is still 167.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 498.89ms. Allocated memory is still 218.1MB. Free memory was 162.6MB in the beginning and 142.6MB in the end (delta: 20.1MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.36ms. Allocated memory is still 218.1MB. Free memory was 142.3MB in the beginning and 140.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.59ms. Allocated memory is still 218.1MB. Free memory was 140.2MB in the beginning and 138.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 486.94ms. Allocated memory was 218.1MB in the beginning and 386.9MB in the end (delta: 168.8MB). Free memory was 138.7MB in the beginning and 342.0MB in the end (delta: -203.3MB). Peak memory consumption was 27.8MB. Max. memory is 8.0GB. * TraceAbstraction took 7672.68ms. Allocated memory was 386.9MB in the beginning and 958.4MB in the end (delta: 571.5MB). Free memory was 341.0MB in the beginning and 562.3MB in the end (delta: -221.4MB). Peak memory consumption was 350.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6s, 60 PlacesBefore, 48 PlacesAfterwards, 49 TransitionsBefore, 37 TransitionsAfterwards, 1294 CoEnabledTransitionPairs, 8 FixpointIterations, 0 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 29 TotalNumberOfCompositions, 8883 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6257, independent: 5963, independent conditional: 0, independent unconditional: 5963, dependent: 294, dependent conditional: 0, dependent unconditional: 294, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1184, independent: 1142, independent conditional: 0, independent unconditional: 1142, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1184, independent: 1102, independent conditional: 0, independent unconditional: 1102, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 82, independent: 40, independent conditional: 0, independent unconditional: 40, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 132, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6257, independent: 4821, independent conditional: 0, independent unconditional: 4821, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 1184, unknown conditional: 0, unknown unconditional: 1184] , Statistics on independence cache: Total cache size (in pairs): 503, Positive cache size: 475, Positive conditional cache size: 0, Positive unconditional cache size: 475, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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, 76 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: 7.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 463 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 463 mSDsluCounter, 73 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1265 IncrementalHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 47 mSDtfsCounter, 1265 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=913occurred in iteration=6, InterpolantAutomatonStates: 41, 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, 0.6s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 174 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2023-11-17 11:17:31,035 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...