/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:08:05,329 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:08:05,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 21:08:05,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:08:05,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:08:05,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:08:05,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:08:05,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:08:05,432 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:08:05,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:08:05,435 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:08:05,436 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:08:05,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:08:05,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:08:05,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:08:05,437 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:08:05,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:08:05,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:08:05,438 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:08:05,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:08:05,438 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:08:05,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:08:05,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:08:05,439 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:08:05,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:08:05,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:08:05,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:08:05,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:08:05,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:08:05,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:08:05,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:08:05,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:08:05,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:08:05,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:08:05,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:08:05,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:08:05,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:08:05,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:08:05,691 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:08:05,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i [2023-12-05 21:08:07,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:08:07,337 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:08:07,337 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i [2023-12-05 21:08:07,359 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9577ad532/2a874cac7a1d4fb782ddc29f5ea78436/FLAGa79f916b1 [2023-12-05 21:08:07,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9577ad532/2a874cac7a1d4fb782ddc29f5ea78436 [2023-12-05 21:08:07,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:08:07,381 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:08:07,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:08:07,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:08:07,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:08:07,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:08:07" (1/1) ... [2023-12-05 21:08:07,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@648a420a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:07, skipping insertion in model container [2023-12-05 21:08:07,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:08:07" (1/1) ... [2023-12-05 21:08:07,502 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:08:08,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:08:08,037 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:08:08,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:08:08,117 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:08:08,117 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:08:08,123 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:08:08,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08 WrapperNode [2023-12-05 21:08:08,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:08:08,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:08:08,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:08:08,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:08:08,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08" (1/1) ... [2023-12-05 21:08:08,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08" (1/1) ... [2023-12-05 21:08:08,182 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 133 [2023-12-05 21:08:08,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:08:08,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:08:08,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:08:08,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:08:08,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08" (1/1) ... [2023-12-05 21:08:08,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08" (1/1) ... [2023-12-05 21:08:08,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08" (1/1) ... [2023-12-05 21:08:08,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08" (1/1) ... [2023-12-05 21:08:08,218 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08" (1/1) ... [2023-12-05 21:08:08,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08" (1/1) ... [2023-12-05 21:08:08,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08" (1/1) ... [2023-12-05 21:08:08,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08" (1/1) ... [2023-12-05 21:08:08,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:08:08,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:08:08,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:08:08,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:08:08,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08" (1/1) ... [2023-12-05 21:08:08,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:08:08,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:08:08,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 21:08:08,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 21:08:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:08:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:08:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:08:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:08:08,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:08:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:08:08,338 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:08:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:08:08,338 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:08:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:08:08,339 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:08:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:08:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:08:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:08:08,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:08:08,340 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:08:08,477 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:08:08,479 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:08:08,697 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:08:08,781 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:08:08,782 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:08:08,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:08:08 BoogieIcfgContainer [2023-12-05 21:08:08,783 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:08:08,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:08:08,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:08:08,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:08:08,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:08:07" (1/3) ... [2023-12-05 21:08:08,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2985dce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:08:08, skipping insertion in model container [2023-12-05 21:08:08,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:08" (2/3) ... [2023-12-05 21:08:08,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2985dce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:08:08, skipping insertion in model container [2023-12-05 21:08:08,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:08:08" (3/3) ... [2023-12-05 21:08:08,789 INFO L112 eAbstractionObserver]: Analyzing ICFG mix052_pso.opt_rmo.opt_tso.opt.i [2023-12-05 21:08:08,801 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:08:08,801 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:08:08,801 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:08:08,839 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:08:08,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 120 transitions, 252 flow [2023-12-05 21:08:08,911 INFO L124 PetriNetUnfolderBase]: 3/117 cut-off events. [2023-12-05 21:08:08,911 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:08:08,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 117 events. 3/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-12-05 21:08:08,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 120 transitions, 252 flow [2023-12-05 21:08:08,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 71 transitions, 148 flow [2023-12-05 21:08:08,934 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:08:08,939 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@250e903d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:08:08,940 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:08:08,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:08:08,954 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2023-12-05 21:08:08,954 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:08:08,954 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:08,954 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:08:08,955 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:08:08,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:08,960 INFO L85 PathProgramCache]: Analyzing trace with hash -928096155, now seen corresponding path program 1 times [2023-12-05 21:08:08,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:08,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115525108] [2023-12-05 21:08:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:08,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:08:09,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:09,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115525108] [2023-12-05 21:08:09,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115525108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:09,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:09,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:09,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520882175] [2023-12-05 21:08:09,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:09,285 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:09,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:09,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:09,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:09,312 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 120 [2023-12-05 21:08:09,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:09,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 120 [2023-12-05 21:08:09,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:09,371 INFO L124 PetriNetUnfolderBase]: 2/82 cut-off events. [2023-12-05 21:08:09,371 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:08:09,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs, 2 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 55. Up to 15 conditions per place. [2023-12-05 21:08:09,373 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 14 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-12-05 21:08:09,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 176 flow [2023-12-05 21:08:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-12-05 21:08:09,387 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7944444444444444 [2023-12-05 21:08:09,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-12-05 21:08:09,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-12-05 21:08:09,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:09,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-12-05 21:08:09,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,403 INFO L308 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2023-12-05 21:08:09,404 INFO L500 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 176 flow [2023-12-05 21:08:09,404 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,404 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:09,404 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:08:09,405 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:08:09,405 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:08:09,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:09,406 INFO L85 PathProgramCache]: Analyzing trace with hash -928096154, now seen corresponding path program 1 times [2023-12-05 21:08:09,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:09,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313923180] [2023-12-05 21:08:09,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:09,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:08:09,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:09,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313923180] [2023-12-05 21:08:09,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313923180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:09,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:09,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:09,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257325254] [2023-12-05 21:08:09,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:09,562 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:09,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:09,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:09,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:09,563 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 120 [2023-12-05 21:08:09,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:09,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 120 [2023-12-05 21:08:09,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:09,606 INFO L124 PetriNetUnfolderBase]: 3/87 cut-off events. [2023-12-05 21:08:09,606 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-12-05 21:08:09,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 87 events. 3/87 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 84 event pairs, 3 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 74. Up to 15 conditions per place. [2023-12-05 21:08:09,607 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 12 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-12-05 21:08:09,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 198 flow [2023-12-05 21:08:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:09,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2023-12-05 21:08:09,609 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8138888888888889 [2023-12-05 21:08:09,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2023-12-05 21:08:09,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2023-12-05 21:08:09,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:09,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2023-12-05 21:08:09,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,611 INFO L308 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2023-12-05 21:08:09,611 INFO L500 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 198 flow [2023-12-05 21:08:09,612 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,612 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:09,612 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:08:09,612 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:08:09,612 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:08:09,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:09,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1231083548, now seen corresponding path program 1 times [2023-12-05 21:08:09,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:09,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124801427] [2023-12-05 21:08:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:09,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:08:09,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:09,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124801427] [2023-12-05 21:08:09,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124801427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:09,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:09,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007467732] [2023-12-05 21:08:09,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:09,700 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:09,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:09,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:09,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:09,703 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 120 [2023-12-05 21:08:09,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:09,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 120 [2023-12-05 21:08:09,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:09,754 INFO L124 PetriNetUnfolderBase]: 3/86 cut-off events. [2023-12-05 21:08:09,754 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-12-05 21:08:09,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 86 events. 3/86 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 3 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 84. Up to 15 conditions per place. [2023-12-05 21:08:09,756 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 13 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-12-05 21:08:09,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 68 transitions, 222 flow [2023-12-05 21:08:09,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:09,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:09,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-12-05 21:08:09,757 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2023-12-05 21:08:09,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-12-05 21:08:09,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-12-05 21:08:09,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:09,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-12-05 21:08:09,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,762 INFO L308 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2023-12-05 21:08:09,762 INFO L500 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 222 flow [2023-12-05 21:08:09,763 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,763 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:09,763 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:08:09,763 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:08:09,763 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:08:09,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:09,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1231083547, now seen corresponding path program 1 times [2023-12-05 21:08:09,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:09,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154105332] [2023-12-05 21:08:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:09,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:08:09,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:09,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154105332] [2023-12-05 21:08:09,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154105332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:09,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:09,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:09,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993994897] [2023-12-05 21:08:09,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:09,875 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:09,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:09,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:09,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:09,877 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 120 [2023-12-05 21:08:09,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:09,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 120 [2023-12-05 21:08:09,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:09,926 INFO L124 PetriNetUnfolderBase]: 3/85 cut-off events. [2023-12-05 21:08:09,926 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-12-05 21:08:09,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 85 events. 3/85 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 3 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 92. Up to 14 conditions per place. [2023-12-05 21:08:09,927 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 11 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-12-05 21:08:09,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 67 transitions, 240 flow [2023-12-05 21:08:09,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:09,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-12-05 21:08:09,931 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2023-12-05 21:08:09,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-12-05 21:08:09,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-12-05 21:08:09,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:09,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-12-05 21:08:09,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,935 INFO L308 CegarLoopForPetriNet]: 78 programPoint places, 4 predicate places. [2023-12-05 21:08:09,936 INFO L500 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 240 flow [2023-12-05 21:08:09,936 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:09,936 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:09,936 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:08:09,936 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:08:09,937 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:08:09,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:09,937 INFO L85 PathProgramCache]: Analyzing trace with hash 818115062, now seen corresponding path program 1 times [2023-12-05 21:08:09,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:09,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639595470] [2023-12-05 21:08:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:09,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:08:10,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:10,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639595470] [2023-12-05 21:08:10,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639595470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:10,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:10,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:10,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369931457] [2023-12-05 21:08:10,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:10,043 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:10,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:10,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:10,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:10,046 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 120 [2023-12-05 21:08:10,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:10,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:10,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 120 [2023-12-05 21:08:10,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:10,098 INFO L124 PetriNetUnfolderBase]: 2/72 cut-off events. [2023-12-05 21:08:10,098 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-12-05 21:08:10,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 72 events. 2/72 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 2/74 useless extension candidates. Maximal degree in co-relation 81. Up to 13 conditions per place. [2023-12-05 21:08:10,100 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 12 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-12-05 21:08:10,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 67 transitions, 270 flow [2023-12-05 21:08:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:10,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2023-12-05 21:08:10,101 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8138888888888889 [2023-12-05 21:08:10,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2023-12-05 21:08:10,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2023-12-05 21:08:10,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:10,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2023-12-05 21:08:10,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:10,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:10,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:10,105 INFO L308 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2023-12-05 21:08:10,106 INFO L500 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 270 flow [2023-12-05 21:08:10,106 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:10,106 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:10,106 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:08:10,106 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:08:10,107 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:08:10,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:10,111 INFO L85 PathProgramCache]: Analyzing trace with hash 818115061, now seen corresponding path program 1 times [2023-12-05 21:08:10,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:10,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33640334] [2023-12-05 21:08:10,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:10,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:08:10,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:10,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33640334] [2023-12-05 21:08:10,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33640334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:10,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:10,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:10,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708355678] [2023-12-05 21:08:10,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:10,185 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:10,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:10,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:10,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:10,188 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 120 [2023-12-05 21:08:10,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:10,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:10,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 120 [2023-12-05 21:08:10,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:10,217 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-12-05 21:08:10,217 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-12-05 21:08:10,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 69 events. 1/69 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 2/71 useless extension candidates. Maximal degree in co-relation 74. Up to 12 conditions per place. [2023-12-05 21:08:10,217 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2023-12-05 21:08:10,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 66 transitions, 288 flow [2023-12-05 21:08:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2023-12-05 21:08:10,219 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7888888888888889 [2023-12-05 21:08:10,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2023-12-05 21:08:10,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2023-12-05 21:08:10,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:10,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2023-12-05 21:08:10,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:10,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:10,221 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:10,223 INFO L308 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2023-12-05 21:08:10,223 INFO L500 AbstractCegarLoop]: Abstraction has has 84 places, 66 transitions, 288 flow [2023-12-05 21:08:10,223 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:08:10,232 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mix052_pso.opt_rmo.opt_tso.opt.i_BEv2_AllErrorsAtOnce [2023-12-05 21:08:10,272 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:08:10,273 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:08:10,273 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:08:10,273 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:08:10,273 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:08:10,274 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:08:10,274 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:08:10,274 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:08:10,274 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:08:10,274 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:08:10,275 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:08:10,278 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:08:10,278 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:08:10,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:08:10 BasicIcfg [2023-12-05 21:08:10,291 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:08:10,298 INFO L158 Benchmark]: Toolchain (without parser) took 2909.73ms. Allocated memory was 224.4MB in the beginning and 294.6MB in the end (delta: 70.3MB). Free memory was 168.8MB in the beginning and 220.8MB in the end (delta: -52.1MB). Peak memory consumption was 18.7MB. Max. memory is 8.0GB. [2023-12-05 21:08:10,299 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 154.1MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:08:10,300 INFO L158 Benchmark]: CACSL2BoogieTranslator took 738.33ms. Allocated memory is still 224.4MB. Free memory was 168.8MB in the beginning and 145.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-05 21:08:10,300 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.07ms. Allocated memory is still 224.4MB. Free memory was 145.7MB in the beginning and 143.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:08:10,300 INFO L158 Benchmark]: Boogie Preprocessor took 41.28ms. Allocated memory is still 224.4MB. Free memory was 143.6MB in the beginning and 141.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:08:10,302 INFO L158 Benchmark]: RCFGBuilder took 558.24ms. Allocated memory is still 224.4MB. Free memory was 141.5MB in the beginning and 108.5MB in the end (delta: 33.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-05 21:08:10,302 INFO L158 Benchmark]: TraceAbstraction took 1506.07ms. Allocated memory was 224.4MB in the beginning and 294.6MB in the end (delta: 70.3MB). Free memory was 107.9MB in the beginning and 220.8MB in the end (delta: -112.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:08:10,303 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 154.1MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 738.33ms. Allocated memory is still 224.4MB. Free memory was 168.8MB in the beginning and 145.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.07ms. Allocated memory is still 224.4MB. Free memory was 145.7MB in the beginning and 143.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.28ms. Allocated memory is still 224.4MB. Free memory was 143.6MB in the beginning and 141.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 558.24ms. Allocated memory is still 224.4MB. Free memory was 141.5MB in the beginning and 108.5MB in the end (delta: 33.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1506.07ms. Allocated memory was 224.4MB in the beginning and 294.6MB in the end (delta: 70.3MB). Free memory was 107.9MB in the beginning and 220.8MB in the end (delta: -112.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 145 locations, 9 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: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=6, InterpolantAutomatonStates: 18, 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, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 264 ConstructedInterpolants, 0 QuantifiedInterpolants, 372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:08:10,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...